Post on 18-Dec-2015
Welcome and overview of AASPI accomplishments and software development
Kurt J. Marfurt
Attribute-Assisted Seismic Processing and Interpretation
AASPI
AASPI 2011 Personnel Changes
• Trey White (M.S. Geology)• Sumit Verma (Ph.D. Geophysics)• Alfredo Fernandez (M.S. Geophysics)• Melia da Silva (M.S. Geophysics)• Mark Aisenberg (M.S. Geophysics)• Daniel Trumbo (M.S. Geology)
out
in
• Kui Zhang – (Ph.D. Geophysics) – to BGP• Yanxia Guo – (M.S. Geophysics) – to BGP• Amanda Thompson (M.S. Geophysics) – to Devon• Oz Elis (M.S. Geophysics - to TPAO• Ana Martins (M.S. Geophysics) – to Schlumberger• ----------------------------------------------------------------------------• Alejandro Cabrales-Vargas (M.S. Geophysics) – to PEMEX• Supratik Sarkar (Ph.D. Geology) – to Shell• Sunday Amoyedo (Ph.D. Geophysics) – to TOTAL • Aliya Urazaminova (M.S. Geophysics) – to Anadarko• Evan Staples (M.S. Geophysics) – to ConocoPhillips
going• Brad Wallet – (Ph.D. – Geophysics) – to Schlumberger
• 75% of the port to multiplatform performance (Linux and Windows 7)• aaspi_io – C++ code to read/write files and command lines• GUIs – C++ graphical user interfaces• all higher level aaspi algorithms
• Developed and released the following new algorithms• som2d – clustering of waveforms/stacking patterns at each trace• som3d – clustering of attribute vectors at each voxel• nmo_mp – non-stretch normal moveout using matching pursuit• sof_prestack – prestack structure-oriented filtering• azim_offset_mig – simple prestack Kirchhoff time migration• aaspi_util_prestack – GUIs and scripts to handle migrated data
• Prototyped the following new algorithms• Constrained 3D least-squares prestack time migration (working) • cwt, cwt_inverse, and bandwidth extension (needs aaspi_io)• Phase residue mapping of unconformities (needs aaspi_io)• High resolution (factor component) velocity analysis
• Improved the following existing algorithms• sof3d – near total restructuring• dip3d – simplified and streamlined Kuwahara window options• spec_cmp, sof3d – significantly improved spectral balancing
AASPI 2011 Software Development
• Calibration of curvature anomalies with outcrop analogues and image logs (Evan Staples – Hunton Lime; Trey White – Mississippi Lime; Nabanita Gupta – Woodford Shale)
• Correlation of core linked to seismic attributes via depositional environment models (Nabanita Gupta)
• Prediction of sand production from time-lapse AVO analysis (Sunday Amoyedo)
• Prediction of geomechanical properties and well-bore stability through attribute-generated structure models, well logs, and prestack impedance inversion and time-lapse seismic (Aliya Urazimanova and Sunday Amoyedo)
• Integration of outcrop flow directions, seismic stratigraphy, λρ-μρ inversion, and production data to identify sweet spots, Chicontepec Bain (Supratik Sarkar)
• Developed and perfected constrained least-squares constraints and data prediction capabilities (Alejandro Cabrales-Vargas, Shiguang Guo)
AASPI 2011 Workflow Development
Unconfined Compressive Strength (UCS)
(Aliya with Prof. Rogiers)
.
31
312/122/122,1
1arccos2
1
1arccos2
1
2
.
(Urazaminova MS, 2011)
Outcrop Study
Slump
Debris FlowFine grained sandMedium/ Coarse grained sand
Conglomerate/ Shale clast conglomerate
Shale
Paleocurrent direction
Direction of slumps
Section unavailable for measurement
Paleocene-Eocene boundary (Cossey et al- Personal communication)
Turbidite Depositional History
Thin bed- distal levee
Channel fill
Removed rip up clasts
Proximal levee
(Sarkar PhD 2011)
20 km
SM
O
Go
lden
Lan
e platfo
rmChicontepe
c
subsurface
production
area
Amatitlan
3D
Tanlajas
Paleocene paleocurrent
Paleocene slumps
Turbidite Depositional History
Outcrop Study (Paleocurrent Pattern)
(Sarkar PhD 2011)
20 km
SM
O
Go
lden
Lan
e platfo
rmChicontepe
c
subsurface
production
area
Amatitlan
3D
Tanlajas
Eocene paleocurrent directions
Turbidite Depositional History
Outcrop Study (Paleocurrent Pattern)
(Sarkar PhD 2011)
Amalgamated channelChannel/ Canyon fill
Unit A
Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
(Sarkar PhD 2011)
Unit A
Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
N
(Sarkar PhD 2011)
Major NE Channel/ Channel complexNE Channel/ Channel complex
Fan/lobes from NE Channel
Splay
Major SW Fan/ Channel fan complexExtended Fan network (SW)
Mass transport complex
Levee- overbank deposit
Basin Plain
Unit A
Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
N
(Sarkar PhD 2011)
μρ
(Gp
a-g
/cm
3 )
λρ (Gpa-g/cm3)10 40 60 100 140
10
20
40
30
50
60
120Quartz
Calcite
70
80
90
110
100
Feldspar (avg)
Seismic Reservoir Characterization
Interpretation
(Sarkar PhD 2011)
5 km
Potential good production areas
Seismic Reservoir Characterization
Interpretation
Correlation with production
(Sarkar PhD 2011)
Potential good production areas
Relative indices for six month’s cumulative
production
Seismic Reservoir Characterization
Interpretation
Correlation with production
5 km