Appendix: A list of common abbreviations

AAI Absolute acoustic impedance LPG AI Acoustic impedance LST °API Oil gravity, American Petroleum Institute LWD

degrees LSW AFTA Apatite fission track analysis Ma AST Aggradational system tract mBRT AVO Amplitude versus offset (amplitude variation mD

with offset) mfs BBL Barrel MORB BCPD Barrels of condensate per day MRIL BGS British Geological Survey ms BHT Bottom hole temperature N : G (NG) BIRPS British Institutions Reflection Profiling NGL

Syndicate NMO BKB Below Kelly bushing NMR BMSL Below mean sea-level NOCS BOPD Barrels of oil per day NPD BOE Barrels of oil equivalent NNS BRT Below rotary table OBC BWPD Barrels of water per day OBS CDR Common depth ratio ODP CMP Common mid point ODT CNS Central North Sea OMF COG Common offset gather owe CRG Common receiver gather PCA CSG Common slowness gather PBU CSIA Compound specific isotope analysis PSDM ,5,3C Ratio of carbon-13 isotope to carbon-12 isotope psi

measured in a sample relative to a standard PVT <515N Ratio of nitrogen-15 isotope to nitrogen-14 RFT

isotope measured in a sample relative to a standard

Ro

<5, 80 Ratio of oxygen-18 isotope to oxyge-16 isotope ra

measured in a sample relative to a standard RSA DHI Direct hydrocarbon indicator Rw

DMO Dip move out s, DSDP Deep Sea Drilling Project DST Drill stem test s2 DTI UK Department of Trade and industry ERD Extended reach drilling EWT Extended well test SB FIT Formation interval test SCF FSB Faeroe-Shetland Basin SEM FTSS Feet, subsea Sm3

GC Gas chromatography SNS GC-MS Gas chromatography mass spectrometry SrRSA GEUS Geological Survey of Denmark and Greenland ss GIIP Gas initially in place STB GOC Gas-oil contact STOIIP GOR Gas-oil ratio o w

GRV Gross rock volume ^ w i r r

GWC Gas-water contact TD HDIL High definition induction log TDS HI Hydrogen index TOC HP/HT High pressure/high temperature TSR HST Highstand system tract TST HWC Hydrocarbon-water contact TVD IMF Inner Moray Firth TVDSS IOR Improved oil recovery TWT KCF Kimmeridge Clay Formation UKCS Kh Horizontal permeability VCS Kv Vertical permeability vv

Liquified petroleum gas Lowstand system tract Logging while drilling Lowstand wedge million years Metres below rotary table millidarcies maximum flooding surface Mid-ocean ridge basalt Magnetic resonance imaging log milliseconds Net to gross Natural gas liquids Normal move out Nuclear magnetic resonance Norwegian Continental Shelf Norwegian Petroleum Directorate Northern North Sea Ocean bottom cable Ocean bottom seismograph Ocean Drilling Program Oil-down-to Outer Moray Firth Oil water contact Principal component analysis Pressure build-up Pre-stack depth migration Pounds per square inch Pressure, volume, temperature Repeat formation test Vitrinite reflectance measured using oil immersion objectives Resistivity (oil) Residual salt analysis Resistivity (water) Yield during (RockEval) pyrolysis of petroleum-like material contained in sample Maximum petroleum yield from kerogen of sample released during (RockEval) pyrolysis of petroleum Sequence boundary Standard cubic feet Scanning electron microscope Standard cubic metres Southern North Sea Strontium isotope residual salt analysis Subsea Stock tank barrel Oil initially in place Water saturation Irreducible water saturation Total depth Total dissolved solids Total organic carbon Thermal sulphate reduction Transgressive system tract True vertical depth True vertical depth, subsea two-way time United Kingdom Continental Shelf Vertical cable seismic P-(compressional) wave velocity

XVI APPENDIX: A LIST OF COMMON ABBREVIATIONS

VR Vitrinite reflectance WAG Water-alternating-gas (oil recovery technique) Vs S-(shear) wave velocity WUT Water-up-to VSP Vertical seismic profile XRD X-ray diffraction

Index Page numbers in bold refer to tables and page numbers in italics refer to figures

Acadian orogeny 512 acoustic impedance (AI) 1047-1048 Adolphus Field 474 Aegean Sea, as structural model 147, 148 Aegir Ridge 42 aeromagnetic data see magnetic data AFTA see apatite fission track analysis Aghardfjellet Formation 252 AI (acoustic impedance) 1047-1048 Albuskjell Field 912, 913 Alder fan 854 Alexis Formation 510 Alleghenian orogeny 512, 513 Alpha Field 912 Alpha Ridge 172, 174, 250 Alpine orogeny 137, 146, 915 aluminium

export 1345-1347 mobilization 1340-1341

amplitude studies, seismic resolution enhancement 1047

amplitude versus offset see AVO Amroth, sediment log 776 analogue modelling

strike-slip fault system method 216-217 results 217-220 results discussed 221-224

Andrew tuff 651, 655 Anguille Group 513 Anticosti Basin 511-513 Anton Dohrn Lineament 408 Anton Dohrn Seamount 42, 392, 401, 579,

586 Anton Dohrn Transfer 42, 46 apatite fission track analysis (AFTA)

349-350 Faeroe-Shetland Basin 588 method 614-615 North Atlantic margin studies 351-354 results 616-619

Appalachian Basin, Namurian stratigraphy 760-763

Arbroath Field 1125, 1128, 1129 Are Formation 1209, 1210, 1213

facies analysis 1214 reservoir geometry modelling 1211-1216

Arenicolites 1034 Argo Formation 504, 520 Argyll Field 474 Arkwright Field

coherency study 1302-1304 development 1128-1133 discovery 1125-1126 reservoir characteristics 1126 volumetric predictions 1126-1128 well testing 1126

Asterosoma 1191, 1213 Atlantic margin

basin modelling 1357-1359 hydrocarbon expulsion and migration

1360-1361 hydrocarbon maturation 1360 large igneous province (LIP)

flood basalts 574-578 Iceland plume 573 sediment sill complexes 578-579 source rocks 1354-1357 tectonic evolution 1351-1354 volcaniclastics 581 volcano complexes 579-581

post-Triassic development 231-232 prospectivity 227-228 tectonic events

Caledonian 42-46

Cretaceous extension 49-51 Eocene inversion 52-53 Jurassic uplift 47-49 Neogene rifting 53-56 Paleocene magmatism 51-52 Permo-Triassic extension 46-47

thermal history reconstruction methods 349-350 results 351-354

Atlantic Ocean (North) 1250 Caledonian setting 8-11 Carboniferous setting 15-18 Cretaceous setting 31-33 Devonian setting 12-15 Jurassic setting 20-29 Permian setting 19-20 seafloor spreading 8 Tertiary setting 33-35

Auk Field 474 Auk Horst 75

Avalon Formation 504, 506, 518 Avalon Uplift 492 AVO

A + B sections 1291 A v. B crossplot 1291 case studies

Barents Sea 1295-1297 Brent Field 1047 chalk 928, 943-944 Greenland West 1292-1295 Tor Formation 945-947 West Shetland modelling

anisotropy 639-641 conventional model compared 641 pre-drill model 635-636 walkaway vertical seismic profile

638-639 well data 636-638

effect on well ties 1265, 1270 theory 1289-1290

Aylesbeare Group 1157

back basin problem see Strathmore Field also Solan Field

Bacton Group 203, 1300 Baikalian orogeny 248 Bakevellia Basin 204 Balder Formation 1369, 1370 Balder Graben 386 Balder tuff 650 Banff Field 975

reservoir properties characterization 980-982 development 979-980 fracturing 984-985 lithofacies 984 modelling development 986-987 performance 980 stratigraphy 982

seismic image 978-979 structural development 977-978

Banks Group 93, 103, 1235 Barachois Group 513 Barents Sea (Norwegian Sector) 247

margin areas reservoirs and traps 256-257 source rocks 255-256 structure 254-255

platform areas evolution 249-250 reservoirs and traps 252-254 source rocks 250-252 structure 248-249

see also Hammerfest Basin

Barra Fan 42 Barra Volcanic Complex 579 Barra Volcanic Ridge 42 basalt

seismic imaging problems 1243 relation to Iceland plume 1250-1251 wide angle data

acquisition 1245-1246 interpretation 1247-1248 processing 1246-1247

Base Cretaceous Event (BCE) 829, 830, 831 Base Cretaceous unconformity (BCU)

1014 basement

gravity anomaly 602 highs and heat flow 1316

basin modelling charge model 1323-1324 history of 1314-1315 pressure model 1320-1323 Rockall Trough 428-430 thermal model 1317-1318

basinal facies, NE Greenland 331, 333 Bean Basin 410-411 Beatrice Field 474 Ben Nevis Formation 504, 506, 518 Beothuk Field 474, 475 Bernard parameter 802 Beryl Embayment 127

seismic inversion method 1282-1284 results 1284-1285 results discussed 1285-1287

stratigraphy 1281-1282 structure 1282

Beryl Field 1187 Beryl Formation reservoir 1188-1189

cross Field correlation 1192-1195 depositional model 1195-1197 engineering properties 1192 facies analysis 1191-1192 sedimentology 1189-1191

Beryl Formation 1053, 1054, 1281 Beta North East Terrace 868 beta stretching

Atlantic margin 1351 Rockall Trough 429

Billefjorden Fault Zone 42 biomarkers, marine v. non-marine 480-483 biostratigraphy, chalk 916-917 BIRPS Westline 374, 410 Biscay, Bay of 8 Bivrost Lineament 42 Bjarni Formation 510 Bjornoya Basin 42 Bjornoya Fan 42 Black Cove Formation 512 Blackstones 581 Blodoks Formation 915, 919 Boat Harbour Formation 513 Bosies Bank Formation 179 Boss Point Formation 765 Bothnian Senja Shear Zone 42 Bothnian-Kvaenangen Fault Complex 42 Bothnian-Senja Shear Zone 46 Bouguer gravity

Erris Trough 458 Faeroe-Shetland Basin 601-602 Intra-Basin 602-603 Slyne Trough 450, 451 see also gravity

Bowland Shale Formation 813 Brae Field 1347 Brae Formation 855, 1200 Brendan Complex 579

XV111 INDEX

Brent Field 92-93, 1039-1040, 1235 development 1040-1041 fault scarp case study

degradation products 97-102 external geometry 95-96 internal structure 96-97 reservoir potential 103-104 scarp evolution 102-103 slope failure 102

full field simulation model applications 1043-1045 inputs 1041-1043

hydrocarbon potential 94 reservoir characterisation 1048-1049 reservoirs 93 seismic survey 1045-1047

resolution enhancement 1047-1048 structure 93-94

Brent Group 93, 474, 830, 1039, 1040, 1063, 1064-1066, 1177, 1235

reservoir model 1043 Bridport Sandstone Formation 474 Britannia Field

history 1115 modelling

facies heterogeneity 1120-1122 well type impact 1122-1123

reservoir properties 1115-1116 facies analysis 1116-1117 stratigraphy 1117-1119

Broadford Beds Formation 446 Brockelschiefer 1300 Bronnoysund Basin 42 Broom Formation 93, 103, 1043, 1064, 1177 Buchan fans 855 Buchan Field 474

13C see carbon isotopes Caister Coal Formation 809, 811, 813, 816 Caister Field 725, 800 calcite

cementation in chalk 1223-1224 in fluid inclusion analysis 620-621, 622-623

Calder Field 1383 Caledonian orogeny and structures 248, 601

Atlantic margin 8-11, 42-46 Central North Sea Trough 68, 79 Irish Rockall Trough 434, 438 Witch Ground Graben 135

Cambro-Ordovician seeps, Anticosti basin 511 Canada see Maritime Basin Captain Field

depositional environment 1110-1111 development problems 1101-1102 facies analysis 1105-1107 history 1101 horizontal drilling 1111-1112 reservoir architecture 1107-1109 reservoir stratigraphy 1104 seismic survey 1104-1105 structural setting 1102-1104

Captain Ridge 1102, 1104 carbon dioxide in gas 800-802 carbon isotopes 803, 917 carbonate cements 1348

see also calcite Carboniferous

depositional model for Trent Field 816-820 incised valley fill

reservoir properties 785 valley connectivity 777-779 valley extent 775-777 valley fill 779-784

plays case study by ribbon interpretation

795-797 Irish Rockall Trough 441-442

reservoir rocks Barents Sea 252 Caister Field 725

Faeroe-Shetland Basin 661 Newfoundland West 514 Southern Permian Basin 800

sediments Irish Rockall Trough 434-435 Slyne Trough 447

source rocks Barents Sea 250 East Irish Sea Basin 1384 Erris Trough 463-464 Newfoundland West 513 Southern Permian Basin 798-800

tectonics and palaeogeography North Atlantic 12, 15-18 West of Shetland 647

see also Dinantian; Namurian; Westphalian Carson-Bonnition Basin 501 Cartwright Formation 510, 511 Catoche Formation 513 cementation 1223-1224 Central Graben 42, 474, 475

gravity gliding 201 chalk study 1222-1223

diagenesis and cementation 1223-1224 fractures 1224-1225 hydrocarbon emplacement 1225-1226

overpressure 1341-1342 pop-up and pull-apart structures 223 structure 207-210 see also Arkwright Field; Banff Field; chalk

exploration project; Eastern Trough Area Project (ETAP); Elgin Field; Frankin Field; Fulmar Field; Greater Shearwater area; Norwegian Central Graben; Shearwater prospect

Central North Sea Trough 64-66 Caledonian features 68 evolution model 75-80 Jurassic facies 68-75 salt tectonics 66-68 structures 66

chalk Central Graben study 1222-1223

diagenesis and cementation 1223-1224 fractures 1224-1225 hydrocarbon emplacement 1225-1226

exploration risks 1221-1222, 1226-1230 first drilled in North Sea 907 fluid effects on rock physics 944-945 petrology 940 porosity characteristics

AVO analysis 943-944 seismic attributes 940-942 seismic inversion effects 942-943

reservoir properties, Banff Field 980-987 seal properties 1093 sedimentary properties 952 seismic inversion 1273 stratigraphic play concept 912, 915 Tor Formation study 945-947

Chalk Exploration project 911-912 Greater Ekofisk area

basin evolution 931-934 chalk stratigraphic plays 912, 975 exploration history 912 exploration model 934 palaeoenvironment analysis 917-921 reservoir evaluation 921-929 sedimentology 921 source rocks 931 stratigraphy 915-917 trap/seal evaluation 929-931

Chalk Group 814, 965, 969, 970, 1015, 1369 Fife Field 1138 hydrocarbon system 932-934 Mid North Sea High

erosion 175-177 seismic analysis 171-175

Slyne Trough 445 top chalk surface 776, 777

Chanter Field 854, 865 charge modelling 1323-1324 Charlie Gibbs Fracture Zone 392 Cheshire Basin 475 Chondrites 966, 968, 1142, 1191, 1213 chromatograms, Jurassic oils 651 chronostratigraphy v. lithostratigraphy

156-157 Cimmerian unconformity 136 Cimmerian uplift, East Irish Sea Basin

1387-1390 Clair Basin 602 Clair Field 645, 693, 722 Clair Group 661, 1369 Clair Ridge 602 Clare Basin 765, 778 Claymore Fan 852-853 Claymore Field 851 Clyde Sands 1094 Codroy Group 513 Coffee-Soil Fault 897 coherency

case studies Arkwright Field 1302-1304 Jaeren High 1304-1305 Leman Field 1299-1302

as a tool 1299 coiled tubing side tracking 1070 Commodore Formation 664, 671 concurrency 1070 Connemara Field 242, 474, 475 Conona Ridge 602 constant offset profiling 1245 Conybeare Group 577 Cook Formation 1177 Cormorant Group 1053, 1063, 1066 Corona Ridge 533, 543, 1377 Cow Head Formation 512 Cretaceous

compression, Witch Ground Graben 137 facies analysis

Kangerlussuaq Basin 339, 340-342 NE Greenland 329-333

migration, Norwegian Central Graben 1336-1338

palaeogeography Irish Rockall Trough 436 Norwegian Sea 267-268

palaeotemperature analysis, Rona Ridge 679 plate tectonic modelling, Rockall Trough

361, 364, 365 plays

Irish Rockall Trough 443 Norwegian Sea 269

reservoir rocks Barents Sea 254, 256 Britannia Field 1115-1119 Captain Field 1104 Central Graben 1225 Eastern Trough Area Project 993, 1000 Foula Sub-basin 664-669 Greenland (West) 321-323 Newfoundland Grand Banks 518 North Sea (North) 232 Norwegian Sea 278, 279-280 Porcupine Basin 242 Voring Basin 282, 323

rifting Faeroe-Shetland Basin 536-538 NE Greenland 327-329

sea-level evidence 334-335 seal rocks

Fife Field 1138 Fulmar Field 1093

sediments Faeroe Shetland White Zone 603 Rockaii Trough 415, 425-427, 436-437 Slyne Trough 445

source rocks Barents Sea 256

INDEX XIX

Labrador Shelf 510, 511 Newfoundland Grand Banks 503-504,

506, 507, 508 Voring Basin 236

stratigraphy Atlantic margin (North) 231 Banff Field 982 Central North Sea 190 Elgin/Franklin Fields 1014-1015 Foula Sub-basin 664 Trent Field 814

tectonics Atlantic margin 23, 25, 31-33, 1353 Banff Field 977-978 Nordland Ridge 89 North Atlantic margin 49-51 West of Shetland 647-649

volcanics, Northeast Rockall Basin 401 volcano complexes of North Atlantic 579

Cromer Knoll Group 103, 174, 814, 829, 880, 1369

Cruiser Formation 664 crustal structure, Rockall Trough 422-424 Cullaidh Shale Formation 475, 482, 484 Cylindrichnus 1141, 1191, 1213

Dalle Nacree Formation 474 Danish Central Graben 897, 898

see also Gertrud Graben Darwin Complex 580-581, 586 Darwin Igneous Centre 392, 396, 401 Dauntless Field 883, 884-886 debris flow 984 deconvolution processing 1259-1260 Deer Lake Group 513 deltaic fades 1190-1191 deltaic sandstone 343-344 density calculations 602, 603, 604 Devonian

reservoir rocks Barents Sea 252 Faeroe-Shetland Basin 661

sediments, Irish Rockall Trough 434 source rocks, Barents Sea 250 tectonics and palaeogeography

North Atlantic 11, 12-15 West of Shetland 647

diagenesis chalk 921, 1223 Fulmar Formation 1018, 1345

diffusivity, Piper Formation 1081 Dinantian stratigraphy see under North Sea

(South) Diplocraterion 1141, 1142, 1191, 1213 Donegal Basin 404, 409 Donna Terrace 83, 263, 264 Doon Rock Fault 438 Douglas Field 1383, 1384 Downing Formation 504 Draupne Formation 827, 829, 830, 831, 836

seismic nature 833-835 stratigraphic architecture 829-832

drilling technology, Tern Field 1069-1074 Dun Caan Shale 475 Dunlin Group 93, 103, 1039, 1040, 1235 Durward Field 883, 884-886 Dyroey Formation 474

Eakring Field 474 East Central Graben, salt tectonics 185 East Faeroes High 42, 602 East Greenland Rift 42 East Hatton-Rockall Basin Centre 579 East Irish Sea Basin

burial history 1387-1390 hydrocarbon migration model

method 1390-1392 results 1392-1395 results discussed 1395-1397

rift-raft morphology 208 reservoir rocks 1386 seal rocks 1386-1387 source rocks 1384-1386 structure 206-207, 1383-1384 Triassic lithostratigraphy 206

East Jan Mayen Fracture Zone 42 East Midlands oilField 748-754 East Midlands Shelf 774 East Piper High 856 East Shetland Basin see Brent Field; Strathspey

Field East Shetland Platform 232 East Solan Basin 694, 701 Eastern Graben 1030 Eastern Interior Basin 764 Eastern Shoals Formation 518 Eastern Trough Area Project (ETAP)

development 993-994, 1004-1005 reservoir behaviour 994-1004

Edale Gulf 778, 781 Edda Field 912, 913, 940-941 Edgeoya Platform 248 Egmanton Field 474 Egret Field

development 993-994 reservoir 994, 1002

Egret Formation 475 Eider Field 1066-1067 Eiriksson Formation 1053 Ekofisk Field 474, 912, 913, 915, 941, 945,

1147, 1255 3D borehole profile

acquisition 1255-1256 processing 1256-1260 results 1260-1261 results discussed 1261-1264

Reservoir Characterization Project 3D model 1153-1154 anisotropy 1152-1153 architecture 1148 description 1147-1148 facies analysis 1150 fault analysis 1150 permeability 1151-1152 porosity 1150

seismic monitoring 1154-1155 upscaling 1154 water saturation 1150-1151

see also Chalk Exploration Project Ekofisk Formation 177, 474, 915, 917, 920-921,

923, 928, 929, 967, 972, 973, 975, 982 Eldfisk Field 912, 913, 941, 945 Elgin Field

geophysics 1015 history 1007-1008 reservoir rocks 1018 source rocks 1018-1019 stratigraphy 1008-1015 trap type 1015-1018

England (Northern) Tertiary Volcanic Province 354 thermal history reconstruction 354-355

Eocene generation of oil, Norwegian Central

Graben 1333 inversion, North Atlantic margin 52 sediments

Faeroe Shetland White Zone 604 Irish Rockall Trough 437 North Sea (Central) 1348 Northeast Rockall Basin 400 Norwegian Sea 295-296, 298 Rockall Trough 417

tectonics and palaeogeography North Atlantic 33 West of Shetland 650

volcanics, Slyne Trough 445 Eqalulik type oil 311-312 Erlend Complex 42, 580, 586

Erlend Platform 261 Erlend Transfer 42 Erris Ridge 438 Erris Trough 42, 404, 410, 411, 455-456

burial history model inputs 464-466 results 466-468

evolution 461-463 hydrocarbon potential 463-464 morphology 456 prospectivity 227 stratigraphy 457-459 structural evolution 240-242 structure 459-461

Etive Formation 93, 103, 1043, 1064, 1065-1066, 1177

Ettrick fans 855 Euramerican Carboniferous basins 758, 761 European Basin, Namurian stratigraphy

764-765 Eurydice Formation 504, 520 Evvia 108 expulsion of hydrocarbons, modelling

characteristics 1330 extended reach drilling 1070

facies analysis Beryl Formation 1191-1192 Carboniferous

Pennines 748-754 Southern Permian Basin 799

chalk 921 Cretaceous

Captain sandstone 1105-1107 NE Greenland 329-333

high density turbidite 1116 Jeanne d'Arc Basin 498 Jurassic

Central North Sea Trough 68-75, 79-80

Fife Field 1140 Fulmar sands 1093-1094

Kangerlussuaq Basin 339, 340-344 Porcupine Basin 496 slurry flow 1116-1117 Tilje/Are Formations 1210-1211

facies modelling, Brent Field 1044 Faeroe Basalt Plateau 559

development interpreted 561-564 seismic resolution 560-561 stratigraphy 565-567

Faeroe Basin 602, 647, 694 Paleocene

geophysical properties 631-633 petrology 630-631 reservoir properties 628 sedimentology 628-629 stratigraphy 627-628

Faeroe Channel Basin 602 Faeroe Channel Knoll 579, 602 Faeroe Group 1369 Faeroe Islands, basalt stratigraphy 565 Faeroe Plateau Lava Group 574-578 Faeroe Shelf

prospectivity 227 structural evolution 237

Faeroe-Shetland Basin 8, 42, 56, 237, 392, 560, 585-586, 602, 661-662

compression event 541-542 development of rifting

basement 533 Cretaceous 536-538 Jurassic 535-536 Paleocene 538-541 Permo-Triassic 533-535

gravity modelling 601-602, 604-605 heat flow modelling 541

method 588-589 results 589-591

spey

XX INDEX

Faeroe-Shetland Basin (continued) igneous rocks

central complexes 550-551 dyke swarms 548 lavas (central volcanoes) 551-553 lavas (regional) 546-548 sills 550

prospectivity 227 sequence stratigraphy 564 underplating 586-588 see also Foula Sub-basin

Faeroe-Shetland Channel Sub-basin 647 Faeroe-Shetland Escarpment 561, 563-564,

602 Faeroe-Shetland Intrusive Complex 578-579,

586 Faeroe-Shetland White Zone 601

maturity 607 migration model 608-610 overpressure 607-608 sedimentary history 603-605 source rocks 605 structural elements 601-603 tectonic episodes 601 thermal model 605-607

Faeroes Dome 42 Faeroes Large Aperture Research Experiment

(FLARE) seismic section interpretation

effect of basalt 1247-1248 geological significance 1249-1251 velocity model 1248-1249

wide angle data acquisition 1245-1246 processing 1246-1247

Fairhead-Clewbay Fault 438 fan sandstone 342-343 Fangst Group 1209 Farewell Rock sediment log 776 Farsund Formation 897, 898, 899, 902, 1225,

1325, 1333 fault analysis

Brent Field 1044, 1046 Hibernia Field

genesis 523-525 trends 519-523

ribbon interpretation 795-796 fault scarp degradation 91

Brent Field case study degradation products 97-102 external geometry 95-96 internal structure 96-97 reservoir potential 103-104 scarp evolution 102-103 slope failure 102

slope instability 91-92 fault seal analysis 1177-1179

methods 1179-1180 results 1180-1184

Feda Graben 898, 1030 feldspar 620, 622, 1340-1341 Fell Sandstone Formation 800

depositional model 740-742 reservoir potential 735-736

Feni Ridge 412 Fife Field

development history 1135-1136 reservoir characterisation

facies analysis 1140-1142 modelling behaviour 1143-1145 sedimentology 1138-1140 sequence stratigraphy 1142-1143 stratigraphy 1138 structure 1138

well database 1136-1138 Fisher Bank Basin 120-123, 124, 204, 1030 Fladen Ground Spur 119-120, 122, 844, 855

Palaeozoic sequences 138 seismic line 139, 146

Fladen Group 1014, 1078

FLARE see Faeroes Large Aperture Research Experiment

flaser bedding 1191 Flemish Pass Basin 505, 507-509 Fles Fault Zone 42, 263, 264 Flett Formation 1369, 1370 Flett Ridge 602, 604, 672 Flett Sub-basin 645, 646, 647, 694, 1377

fault trends 650 petroleum systems analysis 657 reservoir rocks 654-656 seal rocks 656 seismic analysis 657 source rocks 652-653 Tertiary stratigraphy 649 trap structure 656

flood basalts, North Atlantic LIP 574-578 fluid flow, Central Graben 1342-1345 fluid inclusion analysis

method 615-616 results 619-623

fluvial complexes, multistorey 773-775 fluvial facies 748-752 fluvial sandstone 343-344 fluvio-deltaic facies 329 fluvio-estuarine sandstone 340-342 Foinaven Field 693

appraisal 677-678 pressure build-ups 681-682 reservoir management 679-681 reservoir properties 678-679 structure 676-677

Foinaven Sub-basin 645, 646, 647 fault trends 650 petroleum systems analysis 657 reservoir rocks 653-654, 654-656, 657 seal rocks 656 seismic analysis 657 source rocks 651-652 Tertiary stratigraphy 649 trap structure 656

footwall degradation see fault scarp degradation

Forth Approaches Basin, salt tectonics 184 Forth Formation 865 Forties Field 474 Forties Sandstone Formation 474, 1126, 1302 Forties-Montrose High 1342 Fortune Bay Formation 493 fossils, role in correlation 155, 339

see also trace fossils Foula Group 661, 695, 700-704 Foula Sub-basin 647

reservoir properties 664-669 stratigraphy 664 structure 662 Turonian palaeogeography 670-672

fractures chalk 984-986, 1224-1225 modelling behaviour in migration 1331,

1332-1333 fragmentograms, West Greenland seepages

309, 310, 311, 312 Franklin Basin 120 Franklin Field

geophysics 1015 history 1007-1008 reservoir 1018 source rocks 1018-1019 stratigraphy 1008-1015 trap type 1015-1018

Frigate Formation 157 Froan Basin 42 full field simulation model (FFSM)

Brent Field 1041 application 1043-1045 inputs 1041-1043

Fulmar Field 211 by-passed oil potential 1098-1099 history 1089-1090

performance 1090-1091 reservoir facies 1093-1094 reservoir modelling 1091 sediment architecture 1096-1098 stratal stacking 1094-1096 structural setting 1092-1093

Fulmar Formation 153, 157, 1014, 1021, 1090-1091, 1340

illite growth 1345 petrography 1340 porosity 1340-1341 pressure model 1320-1323 seismic character 1346-1347 seismic inversion studies 1273-1274,

1274-1279 West Central Shelf distribution 880

depositional environment 880 provenance 889

Fulmar Terrace 211 Fylla 1292

AVO analysis 1292 reservoir interpretation 1292-1295

Gainsborough Field 474 Galicia Bank Basin 42 Galley Central High 846 Galley Fan 854 Galley Field 874 Galway Graben 410-411 Gamma Field 912, 913 gamma ray logs, Brent Field 97, 98 Gamma structure 863 Gardarbanken High 249 Garn Formation 265 gas chromatography, West Greenland seepages

308, 309, 310, 311, 312 gas composition, Southern Permian Basin

800-803 gas generation modelling 1330 Geike Centre 579 Geike margin 42 genetic stratigraphy 154 geochemistry applied to source rocks

methods 476-477 results 477-484 result discussed 484-485

Gertrud Graben 897-899 lithological setting 903-904 sedimentology 902-903 seismic facies 899 seismic inversion 899-902

Gjallar Ridge 42, 263, 264, 269, 279, 323 glacioeustasy, Carboniferous 752, 757, 766 Glen Ridge 845 Glenworth Field 474 Goban Spur 404 Goose Tickle Group 513 Grand Banks see Newfoundland Grand Banks gravity

NE Rockall Basin 379-382 Rockall Trough 427-428 West of Shetland 694

gravity slides 113 Great Glen Fault 10, 42 Greater Ekofisk area see Chalk Exploration

Project Greater Shearwater area

Jurassic sequence stratigraphy Kimmeridgian 164-167 Oxfordian 157-163

Green Point Formation 512 Greenland (East) 404

lava correlations 567-569 see also Kangerlussuaq Basin

Greenland (NE) controls on sedimentation 333-335 Cretaceous facies analysis 329-333 Cretaceous rift events 326-329 structure 325-326

INDEX XXI

Greenland (West) 1292 AVO analysis 1292 exploration history 315-317

geological evolution 318-319 reservoir rocks 321-323 trap types 323

reservoir interpretation 1292-1295 see also Nuussuaq Basin

Griesbachian Shale 695 Gudrid Formation 510 Gullfaks Field

fault seal study 1177-1179 methods 1179-1180 results 1180-1184

reservoir properties 1177 structure 1177

Haisborough Group 203 Halibut Horst 844-845, 855, 856-857 Halibut Platform 863 Halibut Shelf 122 Halten Terrace 42, 83, 263, 264

geophysical properties 284-285, 286 structural evolution 56, 232-233 thermal model 1318

Haltenbanken see Heidrun Field Hammerfest Basin 42, 1295-1296

AVO analysis 1296-1297 Hampshire Basin 474 Hardangerfjord Shear Zone 42 Hardegsen unconformity 203, 213 Hatton Basin 414 Hatton Trough 42 Hauptdolomite 474 heat flow equations 1316 heat flow modelling

method 588-589 results 589-591 study areas

East Irish Sea Basin 1387 Faeroe-Shetland Basin 541 Faeroe-Shetland White Zone 605-607

Heather Formation 93, 102, 157, 605, 827, 829, 830, 831, 836, 1014, 1021, 1281, 1284

heavy mineralogy 177 Cretaceous, Norwegian Sea 279-280 Helland Hansen 282

Hebrides Basin 404, 475, 476 source rocks 480, 481

Hebrides Terrace Seamount 581 Hebron Field 474 Heidrun Field 474, 1209-1211

facies analysis 1210-1211 reservoir modelling

data 1211-1216 results 1216 uncertainty analysis 1217-1219

stratigraphy 1210 Hekkingen Formation 252 Hel Graben 42 Helland Hansen licence

depositional model 291 geophysical modelling 284-286 lithologies 286-291 reservoir properties 282 seismic characterization 282-284 structural setting 282

Helland-Hansen Arch 42, 264 Helminthopsis 1189, 1190, 1191 Heno Formation 897, 898 Heno Plateau 898 Hercynian unconformity 447 Heron Field

development 993-994 reservoir 994, 1001-1002

Hibernia Field 474, 517-518 lithostratigraphy 518-519 reservoir character 525-526

structural patterns fault genesis 523-525 fault trends 519-523

Hibernia Formation 474, 493, 504, 506 Hidra Formation 915, 917, 919, 922 high pressure/high temperature plays defined

989 Highland Boundary Fault 10, 42 Highlander-Piper High 846 Hod Field 912, 913, 949

chalk core details 952 cross section 955 stratal thicknesses 952-953 stratigraphy 949-951 structure 951-952

Hod Formation 915, 917, 919-920, 922, 929, 950, 952

Hold with Hope Group 325 facies analysis 329-333

Holywell Shale 475, 1384 Home Forland Formation 325 Hopedale Basin 509 Horda Platform 232 horizontal drilling 1111-1112

see also Nevis Field Hornsund Fault Zone 42 Horseshoe Basin 501 Hospital Ground Formation 800 Hot Lens 867 Hot Sand 867 Howley Formation 513 Humber Group 93, 102, 157, 174, 1014, 1054,

1281, 1284, 1340, 1369 Outer Moray Firth study

biozones 841 depositional history 844, 845, 846 lithostratigraphy 841 origins 855-858 sequence stratigraphy 841

sequence description 847-855 terminology 842-843

see also Fulmar Formation; Kimmeridge Clay

hydrocarbon generation modelling inputs 1327, 1330 outputs 1333-1336

Iapetus Suture 42 Iceland plume 573-574, 650, 1250-1251 ichnofabric and icnofacies

Fife Field 1141 Fulmar sands 1093-1094 West Central Shelf 880

igneous activity see magmatism He Formation 265 illite 1345 incised valley fill (IVF) 766

recognition 775 Trent Field 817-818 Upper Carboniferous examples

reservoir properties 785 valley connectivity 777-779 valley extent 775-777 valley fill 779-784

Inner Moray Firth 64, 65, 120-123, 124, 474, 475

pull-apart basin 222 thermal model 1317-1318

Inner Snorre Fault 107, 108-109 Innuitian orogeny 248 intrusive igneous rocks see sill complexes inversion events

Central North Sea 193-195 Tertiary 35

Rockall 452 Iona Field 865 Irish Rockall Trough see Rockall Trough

(Irish sector) Irish Sea see East Irish Sea Basin

Iroquois Formation 504, 520 Itilli type oil 310-311

J Ridge 154 Jackfork Sandstone 764 Jacqui Graben 75 Jaeren High

coherency study 1304-1305 salt tectonics 184-185

Jan Mayen Lineament 42, 46, 262, 263 Jeanne d'Arc Basin 42, 473, 474, 475, 476,

504-507 facies analysis 498 sedimentation 491, 492-494 source-rock correlations 477-485 tectonic history 488-491 see also Hibernia Field

Jeanne d'Arc Formation 475, 483-485, 492, 496, 498, 504, 506, 518

Joggins Formation 766 Judd Basin 694 Judd Fault Complex 602, 694 Judd High 647, 694 Judd Platform 602 Judd Transfer 42 Jurassic

facies analysis, Fife Field 1140 migration, Norwegian Central Graben 1336 palaeogeography 1205

Grand Banks 490 Irish Rockall Trough 436 Norwegian Sea 265-267

plate setting, Slyne Trough 452 plays, Irish Rockall Trough 442 reservoir rocks

Barents Sea 254, 256 Beryl Formation 1054 Brae Formation 1200 Brent Field 93 Brent Group 1039, 1063, 1064, 1235 Elgin/Franklin Fields 1018 Faeroe-Shetland Basin 661 Fife Field 1138 Fulmar Formation 1089, 1090 Fulmar Sandstone 1340 North Sea (North) 232 Solan Field 705-706 Tilje/Are formations 1211-1216

rifting, Faeroe-Shetland Basin 535-536 seal rocks 93, 1093, 1138 sediments

Central North Sea Trough 68-75 Faeroe Shetland White Zone 603 Gertrud Graben 902-903 Irish Rockall Trough 435-436 Jeanne d'Arc Basin 491, 492-494 Northeast Rockall Basin 399 Porcupine Basin 491-492, 494-496 Rockall Trough 415, 427 Slyne Trough 445-446 see also Humber Group

sequence stratigraphy Fife Field 1142-1143 Greater Shearwater 157-167 Telford Field 1078-1080 West Central Shelf 881-886

source rocks Atlantic margin 1354 Barents Sea 252, 255 Central Graben 1225 Erris Trough 464 Faeroe-Shetland Basin 237 Halten Terrace 233 Hebrides Basin 476, 480 Irish Rockall Trough 440 Jeanne d'Arc Basin 473, 480 Kimmeridge Clay 1340 Minches Basin 476, 480 Newfoundland Grand Banks 502, 505,

507, 509

XXI1 INDEX

Jurassic, source rocks (continued) North Sea (North) 232 Norwegian Central Graben 1325, 1333 Porcupine Basin 242, 472, 480 Rockall Trough 240 Slyne Trough 476, 480 Solan Field 711 West of Shetland 651 West Shetland 1377

stratigraphy Atlantic margin (North) 231 Central North Sea 187-190, 1032-1033 Elgin/Franklin Fields 1014 Tampen Spur 827-828, 829-832 Trent Field 814 Witch Ground Graben 140-141

tectonics Banff Field 977 Nordland Ridge 87-88 North Atlantic margin 47-49 North Sea 117 West of Shetland 647 Witch Ground Graben 141-143

tectonics and palaeogeography 18, 20-29, 1353

thermal doming, Witch Ground Graben 136, 138-139

unconformities, North Sea 117-118

Kangerlussuaq Basin 337 basin evolution 339 petroleum potential 344-345 sandstone wedges 340-344 stratigraphy 337-339

kaolin, role in diagenesis 1347 Kenamu Formation 510, 511 Ketch Field 800 Keys Fault 208 Kimmeridge Clay Formation 93, 157, 388, 474,

475, 483-485, 535, 603, 605, 607, 608, 650, 695, 704-706, 711, 827, 851, 880, 1014, 1080, 1089, 1093, 1284, 1340

Fife Field 1138 seismic inversion 1273, 1279 vitrinite reflectance data 1375 West Shetland 1377, 1380

Kinderscout Grit 778, 781 Kingfisher Field 1200 Kittiwake Field 879, 880-881

sequence stratigraphy 881, 882-883, 886 Knipovitch Ridge 42, 254 Kolbeinsey Ridge 42 Kong Karls Land Platform 248 Kraka Field 912 Kuugannguaq type oil 310

Labrador Sea 8 Labrador Shelf 505, 509-511 lacustrine facies 749 Lamba Formation 1369, 1370 Lange Formation 268, 282 Laramide events 177 large aperture recording 1245 Lealt Formation 484 Leman Field 1299-1302 Lennox Field 1383, 1384 Leyland Formation 1387 Lindesnes Ridge 913, 941 Lista Formation 177 lithofacies analysis 984 lithostratigraphy v. chronostratigraphy

156-157 Little Minch Trough, thermal history

reconstruction 353 Loch Lomond Prospect 669 Lofoten Line 42 Lofoten Ridge 263 Logan Canyon Formation 503 Lola Formation 898 Loppa-Ringvassoy Fault Complex 42

Lowlander Field 868, 872 Loyal Field 683-684

development 691 gas management 691-692 history 684 reservoir properties 686-691 seal rocks 686 seismic data 684-685 structure 685-686 trap type 686

Luva structure 275, 276 reservoir/play behaviour 278-280 seismic evaluation 275-278

Lysing Formation 268, 278, 282

Machar Field development 993-994 reservoir 994, 999-1001

Madgard Field 474 magmatism

Norwegian Sea 272 Palaeogene, Faeroe-Shetland Basin 546-553 West of Shetland 650 see also Atlantic margin large igneous

province (LIP) magnetic data, NE Rockall Basin 382 magnetic resonance imaging log (MRIL) 632 Magnus Field 474 Mammal Centre 579 Mandal Formation 931, 1225, 1325, 1333 Mandal High 897 marine shelf facies, NE Greenland 330-331 Maritimes Basin 513-514, 765-766 Markland Formation 510, 511 Marnock Field

development 993-994 reservoir 994-996

Marnock Sands 185-186 Marraat type oil 309-310 Marulk Basin 107 maturity

Barents Sea 257 modelling in Faeroe Shetland White Zone

607 Southern Permian Basin 800

Maureen Formation 177 maximum flooding surfaces (mfs)

Greater Shearwater area Aemula 158-160 Compat 167 Crystallinum 163 Jurapannosum 165-166 Pannosum 166-167 Polonicum 162 Redcliffense 163

Jeanne d'Arc Basin 493 Telford Field 1084 West Central Shelf 881-882 see also TEMFS

Median Volcanic Ridge 42 Mercia Mudstone Group 203, 207, 447, 1157,

1384, 1386 Mexborough Rock 748-752 micropalaeontology, role in correlation 155 Mid North Sea Dome 136 Mid North Sea High 171

Chalk Group erosion 175-177 seismic analysis 171-175

Mid-Cimmerian unconformity 117 Mid-Faeroe Ridge 1253 migration of hydrocarbons 1225, 1308

modelling characteristics inputs 1330-1333 outputs 1336-1338

regions modelled Atlantic margin 1360-1361 Faeroe Shetland White Zone 608-610 NE Rockall Basin 387-388

Rona Sandstone 623-624 West Shetland 1377

Miller Field 1199-1200 depositional setting 1203-1204 heterogeneity evaluation 1205-1207 palaeogeography 1205 reservoir modelling 1200

architecture 1201-1202 lithology 1202

Millstone Grit Formation 474, 800, 809, 811, 813, 816

Minches Basin 475, 476 source rocks 480

mineralogy Carboniferous sediment provenance

783-784, 785 chalk 926 Kangerlussuaq Basin sandstones 344 see also heavy mineralogy

minibasins 886-887, 1008 Miocene

inversion, North Atlantic margin 52-53 sediments

Faeroe Shetland White Zone 604-605 Norwegian Sea 296, 300 Rockall Trough 418 Slyne Trough 445

Mississauga Formation 503 Mjod prospect 956 Modgunn Arch 42, 264 Mohns Ridge 42 Moine Thrust 10, 42 Mokami Formation 510, 511 Monan Field

development 993-994 reservoir 994, 999

Montrose Field 1125, 1128, 1129 Montrose Group 172, 176, 177 Moray Firth 65, 71, 1093

see also Captain Field; Inner Moray Firth; Outer Moray Firth

Moray Group 172, 176, 177, 1369 More Basin 8, 10, 21, 34, 42

Cenozoic development sedimentary breaks 295-298 sedimentary units 298-300 sequence stratigraphy 300-302 structural setting 293-294 tectonic history 302-303

hydrocarbon prospectivity 269-270 magmatism 272 palaeogeography

Cretaceous 267-268 Jurassic 265-267 Tertiary 268-269

prospectivity 227 stratigraphy 262-263 structural evolution 56, 236-237, 263-265 tectonic setting 261-262 thermal history 270-271

More-Trondelag Fault Zone 10, 42, 46 Morecambe Fields 207 Motel Model 652 multi-layer generation and migration

modelling 1308 multilateral drilling 1070 Mungo Field

development 993-994 reservoir 994, 996-999

Munkegrunnur Ridge 392, 559, 602 Murdoch Field 793, 794, 800

ribbon interpretation 796-797 Murre East Fault 519-520, 523 Murre Fault 519-520, 523

Naglfar Dome 42, 264-265, 323 Namurian stratigraphy

palaeovalley systems 766 regional basins

Appalachian Basin 760, 763

INDEX XX111

Eastern Interior Basin 764 Euramerican basins 758, 761 European Basin 764-765 Maritimes Basin 765-766 Ouachita Basin 764 Southern North Sea Basin 772

sandbody classification 760 Trent Field 811,575, 816

Nansen Formation 1235 Nautilus Fault 521, 525 Neogene rifting and uplift 53-56 Neptune Formation 672 Ness Fault Zone 383 Ness Formation 93, 102, 1043, 1064,

1065-1066, 1070, 1177 Ness Lineament 392 net:gross ratio 1130 Netherlands

pop-up structure 222-223 pull-apart basin 221-222

Nevis Field 1051 horizontal well project

application of VSP 1055 evaluation 1060 perforating 1059-1060 pilot result 1055-1057 reservoir simulation 1054 well planning

method 1054-1055 results 1058-1059

stratigraphy 1053-1054 structure 1051-1052

Newfoundland Grand Banks 501 basin structure and potential 501-509 Jurassic palaeogeography 490 see also Hibernia Field

Newfoundland 511-514 see also Labrador Shelf

Niaqornaariuk type oil 312-313 Nise Formation 278, 282 nitrogen in gas 800, 804-805 Nokken prospect 1221 Nordfjord-Sogn Detachment 42 Nordkapp Basin 42 Nordland Ridge 42, 83-86, 671

salt tectonic effects 86-89 North Anatolian Fault 147 North Brook Formation 513 North Buchan Graben 856 North Claymore Field 873 North Halibut Basin 862, 863-865 North Halibut Graben 853, 856 North Mayo Basin 409 North Minch Basin 404 North Morecambe Field 1383 North Permian Basin see North Sea (Central) North Porcupine Basin 404 North Rona Basin 602 North Sea 293

charge models 1323-1324 pressure models 1320-1323 Tertiary sequence well ties 1268-1270 thermal models 1317-1318 triple junction area

thermal doming 117-118 unconformities 117-118

North Sea (Central) major graben 1030 salt tectonic control on inversion 191-195 salt tectonic control on sedimentation

Cretaceous 191 Jurassic 187-190 Tertiary 181 Triassic 182-185

seismic sections 1030-1033 stratigraphy

Jurassic 186 Permian 179-181 Tertiary 190-191 Triassic 181

structural development 1030-1033 experimental analogue 1033

see also Arkwright Field; Britannia Field Central Graben;

Fife Field; Fulmar Formation North Sea (Danish Sector) 897, 898

see also South Arne Field; Gertrud Graben North Sea (North)

structural evolution 232 see also Beryl Embayment; Brent Field;

Tampen Spur; Tern Field; Viking Graben

North Sea (Norwegian) see Edda Field; Ekofisk Field; Norwegian Central Graben

North Sea Rift evolution model 75 regional setting 63-64 sub-basins 65

North Sea (South) 772-773, 796-797 Dinantian stratigraphy 729-730, 731, 732,

735, 736, 738 basin structure 730-733, 734 depositional model 740-742 reservoirs 735-740 sand body geometry 743-744 sedimentary history 733-735

Upper Carboniferous incised valley fill reservoir properties 785 lithostratigraphy 773

Westphalian sand bodies 754-755 see also Leman Field

North Westray Ridge 602 Northeast Rockall Basin (NERB) 391

chronostratigraphy 404 crustal structure 401 gravity modelling 379-382 magnetic modelling 382 modelling hydrocarbon potential 387-389 stratigraphy 398-401 structure 382-383, 386, 392-398 tectonic evolution 402 Tertiary sequence stratigraphy 387 volcanism 401

Northwest European Gas Atlas project 798 Norwegian Central Graben 898, 1326

modelling characteristics inputs

hydrocarbon expulsion 1330 hydrocarbon generation 1327, 1330 hydrocarbon migration 1330-1333 source rocks 1325-1327

outputs 1333-1338 Norwegian Central Trough 71 Norwegian Continental margin 84

see also Voring Basin also More Basin Norwegian Sea see Nyk High Nuussuaq Basin 305-306

exploration history 306 seepage studies

analysis 308 characterization of oil 309-313 recognition 306-308

Nyk High 263, 264, 323 reservoir/play behaviour 278-280 seismic evaluation 275-278 structural setting 275

Olga Basin 248-249 Oligocene

inversion, North Atlantic margin 52 sediments

Irish Rockall Trough 437 Northeast Rockall Basin 400 Norwegian Sea 296, 298 Rockall Trough 418 Slyne Trough 445

opal reflector 270-271 OphiomorphaSSO, 1093, 1094, 1190, 1191, 1213 Orcadian Basin 647

Ordovician reservoir rocks 513 Ormen Lange Dome 42 Orphan Basin 42 Oslo Graben 42 Otter Bank Fault 694, 695 Otter Bank Sandstone 695, 701-704, 710 Otter Bank Shale 695 Ouachita Basin 764 Outer Hebrides Fault Zone 42 Outer Isles Thrust 8 Outer Moray Firth 65, 124

fault seals 863 Jurassic tectonics 858 Paleocene uplift 175 reservoir geology 862 stratigraphy 862 structural setting 843-846 trap geometry and integrity 875-877

Lowlander area 868, 872 North Halibut Basin 863-865 Scott area 870, 873, 874 South Piper area 865 Tartan area 865-868, 869, 871

see also Humber Group; Telford Field Outer Ridge Complex 505, 507 overpressure 1318-1319

Central Graben 1341-1342 exploration risk 1226-1230 Faeroe Shetland White Zone 607-608 modelling 1320-1323

P waves see seismic waves Pabba Shale 475 Pabba Shale Formation 446, 482 palaeogeography

Carboniferous 733, 737, 799 Cretaceous 267-268, 670-672 Jurassic 1205

Central North Sea Trough 74 Grand Banks 490 Norwegian Sea 265-267 Porcupine Basin 477 Slyne Trough 452

Mesozoic, Irish Rockall Trough 436 Tertiary 268-269, 552

Palaeophycus 1191, 1213 palaeotemperature analysis 619 palaeovalley systems see incised valley fill Paleocene

compression, Faeroe-Shetland Basin 541-542

facies analysis, Kangerlussuaq Basin 339, 342-344

igneous activity, West of Shetland 650 inversion tectonics 175 magmatism, North Atlantic margin 51-52 migration, Norwegian Central Graben

1336-1338 palaeogeography, Irish Rockall Trough

436 reservoir rocks 693, 993, 996, 999

Arkwright Field 1125, 1302 Faeroe-Shetland Basin 237, 556, 628 Greenland (West) 321-323 Labrador Shelf 511 Schiehallion Field 683 West of Shetland 653-656

rifting, Faeroe-Shetland Basin 538-541 seal rocks, West of Shetland 656 sediments

Faeroe Shetland White Zone 603-604 Irish Rockall Trough 437 North Sea (Central) 1348 Northeast Rockall Basin 400 Norwegian Sea 295, 298 Rockall Trough 415-417

sequence stratigraphy, West Shetland 1368-1371

source rocks, Voring Basin 236

XXIV INDEX

Paleocene (continued) stratigraphy

Atlantic margin (North) 231 Banff Field 982 Faeroe Basin 627-628 Foula Sub-basin 664-665 West of Shetland 649

tectonics Banff Field 977-978 North Atlantic 25, 32 West of Shetland 650

palynology, role in correlation 155 Papa Basin 602, 647, 694, 701 Papa Group 1369 Papa High 602 Paris Basin 474 Pennine Basin 764-765, 778, 817 Pennine coalfield 748-754 Pentland Formation 119, 1.21, 126, 153, 156,

1002, 1014, 1021-1022, 1030,1031, 1078 permeability

Arkwright reservoir 1130 Brae Formation 1207 chalk 926 Ekofisk Formation 1150 fault gouge 1179 Piper Formation 1081 Tilje/Are formations 1215 see also porosity v. permeability

Permian reservoir rocks

Barents Sea 252-254 Leman Field 1299

seal rocks, Leman Field 1299 sediments, Slyne Trough 447 source rocks, Barents Sea 250 stratigraphy

Central North Sea 179-181 Elgin/Franklin Fields 1008 Trent Field 812, 813

tectonics and palaeogeography North Atlantic 13, 19-20 West of Shetland 647

Permo-Triassic extension and rifting

Faeroe-Shetland Basin 533-535 North Atlantic margin 46-47 North Sea 63-64 Witch Ground Graben 136

plays, Irish Rockall Trough 442 sediments

Rockall Trough and NE Basin 399, 415, 427, 435

Perth Field 863 petrography, Paleocene sandstone 689 petroleum systems 231

Atlantic margin (North) 242-243 success/failure analysis 657-658

petrophysical analysis, Arkwright reservoir 1130

Phoebichnus 1191 Phycosiphon 1141, 1142, 1189 phyllosilicates in fault gouge 1179 Pijnacker Field 222, 223 Piper Field 149, 847, 851, 865 Piper Shelf 119-120 Planolites 966, 968, 1141, 1191, 1213 plate tectonic reconstructions

North Atlantic margin 48 Northeast Rockall Basin 402, 403 Rockall Trough 361-362

modelling 368-369 plate boundaries 362-364 poles of rotation 364 rigid plate method 364 stretching data 366-368

plateau basalts, West of Shetland 650 Pleistocene of Norwegian Sea 296-298,

302 Plio-Pleistocene of NE Rockall Basin 401

Pliocene sediments Faeroe Shetland White Zone 605 Norwegian Sea 296, 302

pods see minibasins Poisson's ratio 1290 pop-up structures 215, 222-223

modelling behaviour 216-221 Porcupine Bank 411 Porcupine Basin 42, 404, 472-473, 474, 475

fades analysis 496 oil geochemistry 477-479 palaeogeography 477 prospectivity 227 sedimentation 491-492, 494-496 source rock correlations 477-485 structural evolution 56, 242 tectonic history 488-491 tectonostratigraphy 476

Porcupine Seabight Basin 392 porosity

Arkwright reservoir 1130 chalk 924-925 Chalk Group 973 depth relationship, chalk 1223 Ekofisk Formation 1150 Fulmar Sandstone 1340-1341

diagenetic effects 1345-1346 Piper Formation 1081 relation to seismic response of chalk 939,

940-943 effect of fluid 944-945 Tor Formation study 945-947

Tilje/Are formations 1215 porosity depth cube 956 porosity v. permeability 779, 742, 970, 972 Portree Shale Formation 446, 475, 482 President Sandstone 779, 782 pressure models 1320-1323 principal displacement zones (PDZ) 215 pristane/phytane ratio 309, 310, 311, 312 Protogine Zone 42 pseudo-acoustic impedance 1067 Puffin High 123, 126 pull-apart basins 215, 221-222

modelling behaviour 216-217 Pyrenean phase 915 pyroclastics, West of Shetland 650-651

quartz in fluid inclusion analysis 620, 621-622 Quaternary of Captain Ridge 1104

Rankin Fault 521, 525 Rankin Field 475 Rankin Formation 484, 491, 492, 505-506, 507 Rannoch Formation 93, 103, 1043, 1064, 1066,

1070, 1177 RAPIDS 422 Ras Basin 263, 264 Rattray Volcanics Formation 121, 1078 Raude Formation 1053 Rauen-Witten Quarry 774 ray-trace (path) migration modelling 1307,

1308 Redshin Quarry (Northumberland) 739-740,

743 releasing/restraining step-over 276 reservoir properties 921-929, 1025

see also porosity also permeability reservoir rocks

Carboniferous 785 Caister Field 725 Newfoundland West 514 North Sea (South) 735-740 Southern Permian Basin 800 Trent Field 816

Cretaceous 993 Britannia Field 1115-1119 Captain Field 1104 Central Graben 1225 Helland Hansen licence 282-284

Labrador Shelf 510, 511 Newfoundland Grand Banks 503-504,

506, 507, 508, 518 North Sea (North) 232 Norwegian Sea 278, 279-280 Voring Basin 323

Cretaceous/Paleocene, Greenland (West) 321-323

Devonian/Carboniferous, Faeroe-Shetland Basin 661

Jurassic Beryl Formation 1054 Brae Formation 1200 Brent Field 93 Elgin/Franklin Field 1008 Faeroe-Shetland Basin 661 Fife Field 1138 Fulmar Formation 1089, 1090, 1340 North Sea (North) 232 Solan Field 705-706 Telford Field 1080-1086 Tern Field 1063, 1064, 1065-1066 Tilje/Are formations 1211-1216

Jurassic/Cretaceous, Barents Sea 252-254 Ordovician, Newfoundland West 513 Paleocene 993

Arkwright Field 1125, 1302 Faeroe Basin 628 Faeroe-Shetland Basin 556 Machar/Monan/Mungo fields 996, 999 Schiehallion Field 683 Voring Basin 236 West of Shetland 653-656, 693

Permian, Leman Field 1299 Triassic 993

East Irish Sea Basin 1384, 1386, 1387 Faeroe-Shetland Basin 661 Marnock Field 994 Strathmore Field 700-704 Tern Field 1066 Wytch Farm Field 1157

residua] salt analysis 1129 resistivity 632, 633 Revfallet fault 83, 88 Rhizocorallium 1191, 1213 Ribban Basin 263 ribbon interpretation 792-795 rift-raft tectonics 201, 202, 203 rifting events 53-56

Faeroe-Shetland Basin 536-538 NE Greenland 327-329 North Sea 63-64

Roan Sandstone 695, 704-705 Rockall Centre 581 Rockall Trough 8, 42, 359-360, 371, 391,

585-586 basin model 428-430 Caledonian Front 9 chronostratigraphy 404 crustal structure 422-424 forward modelling basin geometry

method 373-375 results 375-377

gravity survey 427-428 heat flow modelling

method 588-589 results 589-591

Jurassic tectonics 21 plate tectonic reconstructions 361-362

modelling 368-369 plate boundaries 362-364 poles of rotation 364 rigid plate method 364 stretching data 366-368

prospectivity 227 rifting history

crustal structure 372, 374 gravity anomalies 373 stratigraphy 373

sediment sequence 424-427

INDEX XXV

seismic survey 422 structural evolution 56, 239-240 underplating 586-588

Rockall Trough Intrusive Complex 579 Rockall Trough (Irish sector) 433

crust 434 crustal features 412-414 modelling evolution 439-439 palaeogeography 436 perched basins 409-412 petroleum potential 440-444 stratigraphy 434-437 stretching factor 414 structure 407-409, 437-439 tectonostratigraphy 415-418

Rona Fault 536 Rona Ridge 538, 602, 613-614, 670, 672, 694,

695, 719 thermal history reconstruction

methodology 614-616 results 616-623 use in migration studies 623-624

Rona Sandstone Formation 535, 661 thermal history reconstruction

methodology 614-616 results 616-623 use in migration studies 623-624

Ror Formation 1210 Rosemary Bank 42, 392, 401 Rosemary Bank seamount 579, 586 Rossan Basin and Ridge 411 Rosselia 1191 Rost Basin 42 Rotliegendes Group 812, 1008, 1031, 1138,

1299, 1384 Rough Rock Group 765, 766, 774 Ruhr District 773, 779, 780

S waves see seismic waves Sabden shale 1384 Saglek Basin 509 Saglek Formation 510 St George Group 513 St Kilda Centre 580 salt, role in rift-raft tectonics 201, 205 salt chimneys 886 salt domes, effect on heat flow 1316 salt minibasins 886-887 salt tectonics

Banff Field 977 Central North Sea 63-64, 66-68, 79,

182-191, 1033 Nordland Ridge 86-89 North Sea Rift 63-64

Saltire Field 854, 865 sandbox modelling 1033 Scalpa Sandstone Formation 446 Scandian trend 135 Scapa Field 873 Schaubcylindrkhnus 1189 Schiehal'lion Field 645, 683-684, 693

development 691 gas management 691-692 history 684 reservoir properties 686-691 reservoirs 657 seal rocks 686 seismic data 684-685 structure 685-686 trap type 686

Scott Field 870, 873, 874 Scremerston Coal Formation 475, 736-740 Sea of the Hebrides Basin 42, 353 sea-level change

Carboniferous 752, 757, 766 Cretaceous 334-335

seal rocks 148, 863, 1129, 1331, 1332 Cretaceous 929, 931

Fife Field 1138 Fulmar Field 1093

Jurassic Brent Field 93 Fife Field 1138 Fulmar Formation 1089, 1090

Labrador Shelf 511 Nevis Field 1054 Paleocene

Arkwright Field 1302 West of Shetland 656

Permian, Leman Field 1299 Schiehallion Field 686 Triassic

East Irish Sea Basin 1384, 1386-1387 Wytch Farm Field 1157

seaward dipping reflector sequences (SDRS) 578

seepage studies Anticosti Basin 511 Nuussuaq Basin 308-313

seismic imaging acquisition 1255-1256 processing 1256-1260 results 1260-1261 results discussed 1261-1264

seismic interpretation 795-797, 1243-1245 facies 899 ribbon correlation 792-795 workflow 790-792

seismic inversion 928-929, 1271-1280 Beryl Embayment 1282-1287 Brent Field 1047-1048 Tern Field 1067-1068

seismic properties of chalk 940-943 effect of fluid 944-945 Tor Formation study 945-947

seismic sections Arkwright Field 1128, 1302 Brent Field 95, 1239 Central North Sea 1031 East Midlands oilField 753 Elgin Field 1010 Erris Trough 459 Faeroe-Shetland Basin 550, 551 Fladen Ground Spur 139, 146 Franklin Field 1011 Fulmar Field 1093 Gertrud Graben 899 Greater Shearwater 161 Helland Hansen licence 287 Jaeren High 1304 Leman Field 1300 Murdoch Field 793 Nevis Field 1053 Northeast Rockall Basin 395 Revfallet fault 88 Rockall Trough 425, 426, 427 Shetland-Faeroes Basin 1253 Slyne Trough 449, 450 Snorre-H Basin 833, 834, 835 Solan Field 699 South Arne Field 969, 972 Southern North Sea 180 Strathmore Field 697 Strathspey Field 1238, 1239 Telford Field 7077 Trent gasfield 575 Victory Field 716 West Central Shelf 180 Witch Ground Graben 139, 143, 147

seismic sections Keys Fault 208 Central Graben 272 Fisher Bank Basin 272

seismic waves conversion 1243, 1257-1259 velocity crossplots 1268 velocity ratio 1290

Sele Formation 1302 s.e.m., Paleocene sandstone 631 Senja Fracture Zone 42, 46 Senja Ridge 42

Sentralbanken High 250 sequence boundary defined 1084 sequence seismostratigraphy 284 sequence stratigraphy 154

Carboniferous, Trent Field 819 Jurassic

Fife Field 1142-1143 Greater Shearwater 157-167 Telford Field 1078-1080 West Central Shelf 881-886

Tertiary NE Rockall Basin 387 Norwegian Sea 300-302 West Shetland 1368-1371

Seymore Field 210 Sgiath Formation 127 shale gouge ratio 1179, 1182 Shallow Bay Formation 512 Shearwater prospect

appraisal 1021-1022 development 1024-1026 feasibility study 1022-1024

Sherwood Sandstone Group 447, 474, 1157 age 1388-1389 hydrocarbon migration modelling

method 1390-1392 results 1392-1395 results discussed 1395-1397

reservoir properties 1384, 1386, 1387 Shetland Group 915, 916, 917, 1369

hydrocarbon system 931-932 palaeoenvironment analysis 917-921 porosity/permeability analysis 928

Shetland Spine fault 536, 602 Shetland, West 613-614

amplitude versus offset (AVO) case study anisotropy 639-641 conventional model compared 641 pre-drill model 635-636 walkaway vertical seismic profile

638-639 well data 636-638

evolution 647-650 exploration history 645-646 reservoir rocks 653-656 seal rocks 656 source rocks 651-653 thermal history reconstruction

methodology 614-616 results 616-623 use in migration studies 623-624

trap structure 656 see also Foinaven Field

Shetland-Faeroes Basin 1253 shoreface sediments 1093 Sigmundur Centre 579 sill complexes, North Atlantic LIP 578-579 Siphonichnus 1191 Skagerrak Formation 185-186,203, 1002, 1008

reservoir model 1002-1004 Skolithos 1141, 1191, 1213 Skua Field 1324

development 993-994 reservoir 994, 1002

Sleipner Formation 119 slurry flow 1116-1117 Slyne Trough 42, 404, 410, 476

plate tectonic setting 451-452 prospectivity 227 section restoration 448-451 source rocks 480, 481 stratigraphy 445-447 structural evolution 240-242 structure 448

smear-gouge ratios 526 Smith Bank Formation 203, 880, 886, 1008,

1138 Snakes Bight Formation 513 Snoevit Field 474 Snorre fault block and horst 109

XXVI INDEX

Sola Formation 1117 Solan Basin 602, 647, 1377 Solan Field

appraisal 696 discovery 696 maturation history 711 reservoir rocks 705-706 source rocks 711 trap structure 696-699

Solan Sandstone 695, 704-706, 710 Sorvestlandet High 897 Sorvestnaget Basin 42 source rocks 355-356, 476-485, 1325-1327

Cambro-Ordovician, Newfoundland West 512-513

Carboniferous East Irish Sea Basin 1384 Erris Trough 463-464 Newfoundland West 513 Southern Permian Basin 798-800 Trent Field 814

Cretaceous, Labrador Shelf 511 Jurassic

Atlantic margin 1354 Central Graben 931, 1225 Erris Trough 464 Hebrides Basin 476, 480 Irish Rockall Trough 440 Jeanne d'Arc Basin 473, 480 Kimmeridge Clay 1340 Minches Basin 476, 480 NE Rockall Basin 387 Newfoundland Grand Banks 502, 505,

507, 509 Norwegian Central Graben 1325, 1333 Porcupine Basin 242, 472, 480 Slyne Trough 476, 480 West of Shetland 651-653 West Shetland 1377

Jurassic/Cretaceous Barents Sea 250-252 Faeroe-Shetland Basin 237 Halten terrace 233 North Sea (North) 232 Rockall Trough 240

South Arne Field appraisal 961-964 exploration 959-961 reservoir character 965-968 reservoir fracturing 968-969 reservoir prediction 969-974 seismic section 969 structural setting 964-965 trap mechanism 974-975

South Brae Field 1200 South Halibut Trough 123, 125 South Morecambe Field 1383, 1387 South Scott Field 149 South Solan Basin 694 South Viking Graben 119-120, 122 South Wales Basin lithostratigraphy 778 South Whale Sub-basin 501-504, 505 Southern Permian Basin

Carboniferous rocks 798-800 gases 800-805

Spekk Formation 267 Staffin Bay Formation 475 Stappen High 249 Statfjord East see Tampen Spur Statfjord East Fault 837 Statfjord Formation 1039, 1040, 1177, 1235

reservoir model 1043 Steensby Bjerg Formation 325 steranes 308 Storegga Slide 237 Strathmore Field

appraisal 696 depositional environment 701 discovery 695-696 maturation history 711

reservoir rocks 700-704 fluid properties 706-711

source rocks 711 stratigraphy 700 trap structure 696-699

Strathspey Field 1039, 1235 vertical-cable seismic

method 1237-1238 results 1238-1240

stratigraphic geocellular model (SGM) Brent Field

evaluation 1043-1045 inputs 1041, 1042, 1043

stretching factor (beta) 541 Faeroe-Shetland Basin 587 Irish Rockall Trough 414, 440 NE Greenland 326, 328 NE Rockall Basin 401 Rockall Trough 366-368, 373, 374, 375

strike-slip faults analogue modelling method 216-217 results 217-220 results discussed 221-224

Stronsay Group 172, 176, 1369 strontium isotope analysis 1129 strontium residual salt analysis 632 Suilen Field 693 Sula Sgeir Fault 536 Sula Sgeir High 602 Sullom Formation 1368, 1370 Surt Lineament 42, 263, 264 Svalbard margin 404 Svalbardian orogeny 250 Sverdrup Basin 42 synthetic aperture profiling 1245

Table Head Group 513 Taconic orogeny 512 Taenidium 1213 Tail End Graben 65, 898, 1030 Tampen Spur 827

evolution 835-836 faulting 836-837 stratigraphy 827-828

Draupne Formation 829-835 structural framework 828-829 see also Zeta Structure

Tarbert Formation 93, 829, 1043, 1064, 1177 Tartan Field 849, 865-868, 869, 871 tectonically enhanced maximum flooding

surfaces (TEMFS) 857-858 Teichichnus 1141, 1142, 1191, 1213 Telford Field 1075-1077

history of development 1077 reservoir engineering properties 1084-1086 reservoir geophysics 1081 reservoir zonation 1080-1081 sequence stratigraphy 1078-1080 stratal surfaces 1084

Telford Ridge 846 TEMFS (tectonically enhanced maximum

flooding surfaces) 857-858 Terebellina 1189, 1190, 1191 Tern Field 1063-1064

reservoir rocks 1064-1066 seismic evaluation 1067-1068

well technology 1069-1074 terpanes 308 Terra Nova Field 474 Tertiary

lithospheric stretching 1250 palaeogeography, Norwegian Sea 268-269 plays

Irish Rockall Trough 443-444 Norwegian Sea 270

reservoirs, Barents Sea 256 sediments, Rockall Trough 424 stratigraphy, Central North Sea 190-191 tectonic history

Atlantic margin 1353-1354

West Central Shelf 892 Witch Ground Graben 137, 146

thermal history, Rona Ridge 616-618 uplift

East Irish Sea Basin 1387-1390 Faeroe Shetland Basin 601

volcano complexes, North Atlantic 579-581 well ties, North Sea 1268-1270

Thalassinoides 1141, 1191, 1213 thermal history reconstruction

methodology 349-350, 614-616 results 616-623

North Atlantic margin 351-354 Northern England 354-355 West Shetland 1374

results discussed 355-357 use in migration studies 623-624

thermal models 1317-1318 see also heat flow model

Theta Graben 845, 847, 853, 856 Thistle Field 474 tidal facies 1191 Tiffany Field 474 Tilje Formation 1209, 1210, 1213

facies analysis 1214 reservoir geometry modelling 1211-1216

Tomma Formation 474 Tommeliten Field 912, 913 Tor Field 912, 913 Tor Formation 474, 915, 917, 920, 923, 928,

929, 941, 975, 980 depositional model 952 fault controls on 952-953 porosity 1000 porosity depth cube 956 seismic response 945-947 South Arne Field 966-967, 969-970, 972,

973 thickness 949, 950, 952

Tornquist Line 10, 135 trace fossils

Beryl Formation 1189-1268 SouthArne Field 966, 968 Tilje/Are formations 1213 West Central Shelf 880

Trans-European Fault Zone 135 transformation ratio 1327-1330 transgressive systems tract (TST) 1210 trap structures 148, 875-877, 929-931

Barents Sea 252-254, 257 Elgin Field 1015 Faeroe-Shetland Basin 556-557 Franklin Field 1015-1018 Greenland (West) 323 Lowlander area 868, 872 Machar Field 999 Marnock Field 994 Monan Field 999 Mungo Field 996 Newfoundland Grand Banks 507 North Halibut Basin 863-865 Scott area 870, 873, 874 Solan Field 696 699 South Arne Field 974-975 South Piper area 865 Tartan area 865-868, 869, 870 Trent Field 814-816 Victory Field 715 Voring Basin 323 West of Shetland 656

Trent gasfield 800, 809, 810 depositional model 816-820 development drilling 809, 811 exploration history 809 geophysical data 814 reservoir rocks 816 seismic section 815 source rocks 814 stratigraphy 811-814 trap structure 814

INDEX XXV11

Triassic lithostratigraphy

Irish Sea 206 North Sea 206

minibasins, West Central Shelf 886-887 reservoir rocks 993, 994

Banks Group 1235 Barents Sea 254, 256 East Irish Sea Basin 1384, 1386, 1387 Faeroe-Shetland Basin 661 Statfjord Formation 1039 Strathmore Field 700-704 Tern Field 1066 Wytch Farm Field 1157

seal rocks, Wytch Farm Field 1157 sediments

North Sea 202-204 Slyne Trough 446-447

source rocks, Barents Sea 250 stratigraphy-

Atlantic margin (North) 231 Central North Sea 181 Elgin/Franklin Fields 1008 Trent Field 814

tectonics and palaeogeography 212-213 Banff Field 977 North Atlantic 75, 16, 19-20 West of Shetland 647

Trichichnus 1141 tritium tracers 1166-1167 Troena Basin 263, 264 Tromso Basin 42 Trondelag Platform 83, 261, 263 tuffs of West of Shetland 650-651 turbidites 902-903, 1093, 1116

unconformities Base Cretaceous 1014 Cimmerian 117, 136 Hardegsen 203, 213 Hercynian 447 North Sea Jurassic 117-118

areal extent 119-123 causal mechanisms 127-129 stratigraphic resolution 118-119

underplating, Rockall-Faeroe-Shetland area 586-588

Unst Basin 42 upscaling problems 1044-1045 Uralian orogeny 250 USA see Appalachian basin; Eastern Interior

Basin; Ouachita Basin Utgard High 264 Utrost Ridge 263 Utsira Formation 302 Utsira High 122

Vaila Formation 1369, 1370 Valhall Field 912, 913, 914, 941, 949

chalk core details 952 cross section 954 stratal thicknesses 952-953 stratigraphy 949-951 structure 951-952

Valhall Formation 1104, 1105, 1117 Van Mijenforden Group 256 Variscan Foreland 773, 779, 780 Variscan Front 42 Vema Dome 42, 265, 323 Verril Canyon Formation 502 vertical seismic profile 1055 vertical-cable seismic 1236-1237

future potential 1240-1242

use in Strathspey Field method 1237-1238 results 1238-1240

Veslemoy High 42 Vestbakken Volcanic Province 42 Vestfjorden Basin 42, 263 Victory Field 645, 661

exploration history 713 reservoir properties

charge model 722-723 depositional environment 719 hydrocarbons 721 lithology 715-719 quality 720-721

stratigraphy 713-714 structure 714-715

Victory Formation 715, 777, 775, 720 Victory Ridge 602 Victory Transfer 42, 602 Viking Graben 10, 42, 65, 232, 474,

1347-1348 see also Beryl Embayment; Miller Field;

Nevis Field; Tampen Spur Villeperdue Field 474

vitrinite reflectance (VR) 349-350, 614-617 Kimmeridge Clay of West Shetland 1375 North Atlantic margin studies 351-354 Norwegian Sea 270 Southern Permian Basin 800

volcaniclastics 581 volcano complexes 579-581 Voring Basin 42

exploration history 317-318 geological evolution 319-320 hydrocarbon prospectivity 269-270 magmatism 272 palaeogeography

Cretaceous 267-268 Jurassic 265-267 Tertiary 268-269

prospectivity 227 reservoir rocks 323 stratigraphy 262-263 structural evolution 56, 233-236, 263-265 tectonic setting 261-262 thermal history 270-271 trap types 323 see also Helland Hansen licence; Nyk High

Voring Marginal High 42 Voring Plateau 8 Voyager Formation 475

Walls Boundary Fault 602 Watts Bight Formation 513 Weald inversion 176 well technology development 1069-1074

methodology 1265 results 1268-1270

Wessex Basin 176 West Central Graben 123, 125

salt tectonics 185 West Central Shelf 880

effects of salt 890-892 Jurassic provenance study 889-890 seismic analysis 886-889 sequence stratigraphy 881-886 stratigraphy 880-881 Tertiary folding 892

West Ekofisk 912, 913 West Fladen Basin 847, 848, 849 West Flannan Basin 386 West Halibut Basin 1102 West Jan Mayen Fracture Zone 42 West Lewis Basin 384-385, 396, 399

West Lewis High 386 West Lewis Ridge 396, 397-398 West Orkney Basin 351-352 West of Shetland

basin modelling method 1373-1374 results 1374-1377

formation pressures 1371-1373 structural setting 1367-1368 Tertiary sequence stratigraphy 1368-1371

West Shetland Basin 42, 602, 647, 694 chronostratigraphy 404 thermal history reconstruction 352-353

West Shetland Platform 694 West Solan Basin 694 West Spitzbergen orogen 42 West Sudurey 580 Western Graben 1030 Western Platform 75 Westphalian

North Sea (South) 754-755, 772 Pennine/East Midlands 748-754

Westray Field 854 Westray Group 1369 Westray Ridge 42, 536, 602, 646, 647, 651, 653,

672, 694, 1377 Westray Transfer Zone 42, 602 Whale Basin 501 Whitehurst Group 817 Wick Sandstone Formation 1104, 1105 wide aperture recording 1245 Witch Ground Graben 720, 722, 475, 856, 1030

Base Cretaceous mapping 137-138 modelling structural evolution

Cretaceous 143-146 Jurassic 138-143 Tertiary 146

models discussed 147-149 petroleum potential 133, 148-149 seismic studies 139, 143, 146, 147 stratigraphy 133-135 structure 135-137 see also Britannia Field

Wytch Farm Field 474 discovery 1157-1158 infill drilling 1169-1170 reservoir characterization 1159-1160

formation evaluation 1163-1165 miscible gas injection 1170-1171 petrophysics 1163 pressure 1165

production logging 1165-1166 structure 1160-1161 tritium tracing 1166-1167

use of deviated wells 1167-1169 Wyville-Thompson Ridge 42, 384, 392-395, 602

evolution 395-397, 399

XRD 339, 916

Yermak Plateau 255 Ymir Ridge 42, 392, 397

Zechstein basins of Europe 205 Zechstein Group 174, 695, 1008, 1138, 1299,

1384 salt tectonics 1032, 1033 Trent Field 812

Zeta Fault and Ridge 111-113 Zeta Structure

footwall uplift 109-111 tectonic setting 107-108

Zoepritz equation 1289 Zoophycus 968