Http:// December 12, 2002 Improved Oil Recovery in Mississippian Carbonate Reservoirs of Kansas...

December 12, 2002http://www.kgs.ku.edu

Improved Oil Recoveryin Mississippian

Carbonate Reservoirsof Kansas

DE-FC22-93BC14987 Timothy R. Carr, Dana Adkins-Heljeson,

Saibal Bhattacharya, Alan P. Byrnes,Evan K. Franseen, Paul Gerlach,

Willard (Bill) Guy, Richard Pancake,and W. Lynn Watney

Kansas Challenges• Small Independent Producers

– 3,000 Oil and Gas Operators

• Wells (33,104 wells < 5 BOPD)– Low Rate, High Water Cut

• Inadequate Reservoir Characterization

• Drilling and Completion Design Problems

• Low Recovery Factors– Non-Optimal Primary Recovery

• Operations at or Near Economic Limits

Kansas Approach• Develop Cost-Effective Technologies

– Reservoir Description and Management• Using “best” data

– Evaluation Methods– Spreadsheet log analysis software (PfEFFER)– Online Dissemination

• Information• Technology

– Demonstration• Horizontal Drilling• Infill Drilling

Total Production 6.6+ Billion Barrels

Regan & Granite2 %

ARBUCKLE32 %

Upper & MiddleOrdovician

8 % Hunton1 %

Pennsylvanian(Virgilian)

Pennsylvanian(Missourian)

Pennsylvanian(Desmoisian)

Pennsylvanian(Morrow)

3 %Pennsylvanian

(Other)1 %

Mississippian

Large Potential Target

Ness County, Kansas

• Numerous Targets– Regional Level

Schaben Field

Schaben: Vertical Sequence

0.00 100.00 200.00 300.00 400.00

Minipermeability (md)Oil

Dolo Wacke-Packstone

Grainstone

Lime or DoloMudstone - Wackestone

Silt-Shale Fill

Late Stage BrecciationOriginal Facies Indeterminate

Brecciation

4430.0

4435.0

Ritchie Exploration#1 Foos "A-P" TwinNE SW SW Sec. 31-T19S-R21WNess County, Kansas

Reservoir FaciesSkeletal Wackestone - Packstone

Ritchie 2 Schaben PRitchie 2 Schaben P

Depositional Model

Skeletal Bank

Shoal Island

Lagoon

SkeletalBank

RestrictedShelf

Tidal Channel

Silty Mudstoneand Wackestone

Mudstone andWackestone

Packstone andGrainstone

Wackestone andPackstone

Mudstone andEvaporites

Schaben Field

Perforation: 4400-4404Produced 85 bopd & 132 bwpd

Super Pickett Plot

Reservoir PorositySaturationPay HeightBVW

Super Pickett Plot

Reservoir PorositySaturationPay HeightBVW

Petrophysical Analysis

PfEFFER

Remaining Oil Saturation

• Poor Lateral Drainage• Poor Lateral Drainage

Reservoir Simulation Infill Drilling Targets

So > 40% & Payheight > 20 ft.

Schaben Field Production

Horizontal Wells• Tools for Identifying Candidate Applications

– Production Data Analysis– Geologic Mapping– Integration of Production and Geologic Data– Field & Lease Level Volumetrics

• Reservoir Characterization/Simulation• Field Demonstration - Horizontal Infill Well

– Completed and Planned

IntegratingProduction & Geologic DataPoor Sweep - Vertical Wells in Updip Stratigraphic Trap

Welch-Bornholdt-Wherry FieldRice CountyKansas

Field Level Volumetrics OOIP/Qtr Section

20S/7W

123456

7 8 9 10 11 1 2

1 3141 5161718

19 20 21 2 2 23 2 4

2 5262 7282 930

31 32 33 3 4 35 3 6

20S/6W

123456

7 8 9 10 11 12

131 415161718

19 20 21 22 2 3 24

252627282930

31 32 33 34 3 5 36

20S/5W

161718

19 20 21

21S/7W

123456

7 8 9 10 11 12

1314151 61718

21S/6W

123456

7 8 9 1 0 11 1 2

1 3141 5161718

Welch-Bornholdt-Wherry FieldsDiscovered: 1924Producing Reservoir: Mississippian OsageTrap Type: StratigraphicCumulative Production: 60 MMBO

Original Oil in Place per Quarter SectionCI: 500 MBO / qtr. section

Using data from one type wellper 1/4 section

= 10 MMBO

= 5 MMBO

Field Level VolumetricsRecovery Efficiency

20S/7W

123456

7 8 9 10 11 1 2

1 3141 5161718

19 20 21 2 2 23 2 4

2 5262 7282 930

31 32 33 3 4 35 3 6

20S/6W

123456

7 8 9 10 11 12

131 415161718

19 20 21 22 2 3 24

252627282930

31 32 33 34 3 5 36

20S/5W

161718

19 20 21

21S/7W

123456

7 8 9 10 11 12

1314151 61718

21S/6W

123456

7 8 9 1 0 11 1 2

1 3141 5161718

Recovery Efficiency per Quarter SectionCI: 2%

Welch-Bornholdt-Wherry Fields

Ness County, Kansas

• Numerous Targets– Regional Level

Ness City North Field

• Numerous Targets– Local Level

Reservoir CharacterizationGeologic Model

Geologic model: log (Gr, Res), core, production, DST data

Maps & cross-sections of Mississippian sub-units: 5 layered reservoir model

Reservoir CharacterizationGeologic Model

Reservoir SimulationMapping Residual Potential

Reservoir Heterogeneity• Strong Horizontal

Heterogeneity– 10’ - 100’ Interval

– Karst Controlled

• Result Poor Lateral Drainage

• Strong Horizontal Heterogeneity– 10’ - 100’ Interval

– Karst Controlled

• Result Poor Lateral Drainage

Initial Production

IP: 85 BOPD & 54 BWPD (4/29/00)

Daily Prod:

55 BO& 50 BW

for 2-1/2 months (May to mid-July)

with 1000’ of fluid over pump

IP: 85 BOPD & 54 BWPD (4/29/00)

Daily Prod:

55 BO& 50 BW

for 2-1/2 months (May to mid-July)

with 1000’ of fluid over pump

Complete Production Loss

Lessons Learned • Operational Flexibility (Maintain Your Options)

– New Well vs. Reentry– Hole Size– Drilling Fluids– Case off the Curve– Line the Lateral

• Good Planning• Communication• “The Lateral is a Piece of Cake”• Horizontal Heterogeneity

Ness City North Production

Well and Production Data

Ness City North

Schaben

Ness City North

Well and Production Data

Gemini Modular Approach

KGS Server

apache - jserv

KGS Database & Files

Gemini User/Project

Module

Gemini User/Project

ModuleWell

Profile Module

Well Profile Module

PfEFFER Module

DST Module

Volumetrics Module

Cross Section Module

Material Balance Module

Synthetic Seismic Module

PVT Module

Rock CatalogRock

Catalog

KHANKHAN

Fluid CatalogFluid

Catalog

Well Level Analysis Applets Field Level Analysis Applets

Rock & Fluid Characteristics Applets

Java Servlets

Table: Formation Name Type GEMINI_USER_KID N(10) WELL_HEADER_KID N(10) ZONE_NUMBER N(6) API_NUMBER V(40) TYPE_OF_ZONE N(2) FORMATION_NAME V(40) DATA_SOURCE V(40) START_DEPTH N(8,2) END_DEPTH N(8,2) DATE_MODIFIED D PFEFFER_KID N(10)

Gemini -Well Profile Module

Gemini -PfEFFER Module

Table: Pfeffer_Computed Name Type PFEFFER_KID N(10) BUTTON N(2) BUTTON_ORDER N(4) BUTTON_SELECTED N(2) LAS_KID N(10) RADIO_BUTTON N(2) CURVE_NUMBER N(4) CURVE_MNEMONIC V(100) VALUE N VALUE2 N CORRECTED N(2) CORRECTED_VALUE N TRACK N(2)

Gemini -Volumetric Module

Kansas Approach• Develop Cost-Effective Technologies

– Reservoir Description and Management• Using “best” available data

– Evaluation Methods– Spreadsheet log analysis software (PfEFFER)– Online Dissemination

• Information• Technology

– Demonstration• Horizontal Drilling• Infill Drilling

Http:// December 12, 2002 Improved Oil Recovery in Mississippian Carbonate Reservoirs of Kansas...

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Transcript of Http:// December 12, 2002 Improved Oil Recovery in Mississippian Carbonate Reservoirs of Kansas...

The Daily Mississippian

Daily Mississippian

Improved Recovery Demonstration for Williston Basin Carbonates DE-FC22-93BC14984

MR. RICHARD D. ADKINS ADKINS & ASSOCIATES LAND …

Mississippian Period

Cooperative Agreement No. DE-FC22-94BC14982/67531/metadc669570/m2/1/high... · Cooperative Agreement No. : DE-FC22-94BC14982 ... or usefulness of any information ... Sun Oil Company

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Mississippian Capitals - Wikispaceswilson2011.wikispaces.com/file/view/The+Mississippian… · Web viewThe Mississippians. The Mississippian culture in the midwestern and southeastern

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Cooperative Agreement DE-FC22-95BC 14939/67531/metadc686538/...Ci of Long Beach 8 Tidelands Oil Production Company Award DE-FC22-95BC14939 4 The basic reservoir engineering technical