Eagle Ford Shale Exploration Regional Geology meets Geophysical Technology. Galen Treadgold Bruce Campbell Bill McLain
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1 Eagle Ford Shale Exploration Regional Geology meets Geophysical Technology Galen Treadgold Bruce Campbell Bill McLain
2 US Shale Plays
3 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing (P & S) Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
4 Acquisition Challenges
5 Anisotropic Processing Offset VTI Layer Anisotropy HTI Azimuthal Anisotropy Azimuth Fast Fast Slow
6 Inversion
7 Surface Attributes
8 Frac Monitoring - Microseismic
9 Eagle Ford Shale South Texas
10 Eagle Ford High TOC % Porosity Marl, ft thick
11 Petroleum Fairways Mixed Oil Gas
12 Resource Shales Stratigraphy Modified from Goldhammer et. al. 1991
13 Type Sections Upper BUDA Lower Britton / Bouldin / Cloise Arcadia Park S. Bosque Mbr. Kamp Ranch Eagle Ford AUSTIN Upper 7762 Calc. Rich Thicker bedded Burrowed Lower 7896 Organic Rich Laminated
14 Impedance 8 wells AI Inversion Eagle Ford Buda
15 Shale Prospecting..what we re after Vp Vs Density Brittle/Ductile Quality LMR - MuR Lithology (rock type, clay content ) TOC Fluid Content Porosity Pore Pressure, Effective Stress Stress Field Orientation Fracture Density Bulk Modulus Poisson s Ratio Acoustic Impedance Elastic Impedance
16 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
17 $2,500 Cost Perspective Eagle Ford $1,500 Leasing 5% Drilling For 100,000 Acres (400 km2) Lease Costs: $200 M Drilling Costs: $3,000 M Seismic: $6 M $500 3D Seismic 50 fault $/Acre Processing
18 Offset gather with various mutes Final Stack Mute Pre-Stack Seismic Data Extracting Rock Property Information Typical Processing Mute 30 deg angular offset Missing Data
19 Acquisition needs to provide data out to 50 degrees or more. 50 degrees 30 degrees Global Geophysical Patron Grande 3D
20 1.0 x Depth Traditional Acquisition 90 Degrees 1.5 x Depth
21 1.25+ x Depth Full Azimuth Shooting 180 Degrees (Full Azimuth) 1.5 x Depth
22 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
23 Need Full Azimuth, Far Offset Data Near Offset Far Offset Brittle/Ductile Quality LMR - MuR Lithology (rock type, clay content ) TOC Fluid Content Porosity Pore Pressure, Effective Stress Stress Field Orientation Fracture Density Bulk Modulus Poisson s Ratio Acoustic Impedance Elastic Impedance
24 Far Stack Impact Proper Migration Isotropic Anisotropic
25 Patron Grande Comparison of gathers Isotropic PSTM Original gathers Anisotropic PSTM
26 Conceptual Cross Section & Map View of Fractures Sets A B Fracture Swarm B A
27 Fracture/Stress Prediction From 3D Seismic Super Gathers VOT s Azimuthal Imaging
28 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
29 Inversion Products Vp Density Vs AI SI Vp/Vs LMR MuR PR
30 High Low 4,500 Lateral Eagle Ford Impedance
31 Well targeting low impedance Eagle Ford Low
32 Eagle Ford Lambda Rho
33 Eagle Ford Mu Rho
34 Ductile Brittle Eagle Ford FracFactor TM
35 Limited Calibration GAMMA RAY 200 AIT 90 INCH NEUT. PORO AIT 30 INCH DENS. PORO. TOC_CALC Rel Depth(ft)
36 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
37 Surface Fracture Attribute
38 Fault Enhancement at base Eagle Ford Curvature - base Eagle Ford
39 Haynesville Shale
40 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
41 Field Operations 3C Sonde Grid Installation
42 RESEARCH PROGRAM Grid InSight Program Location Map
43 1,040 Channels RESEARCH PROGRAM Grid InSight Radial Array
44 1,697 Channels RESEARCH PROGRAM Grid InSight Swath Array
45 RESEARCH PROGRAM Grid InSight Shallow Buried Grid Array 104 Channels (36+10 Vertical) (58 Horizontal)
46 54 Tiltmeter stations RESEARCH PROGRAM Grid InSight Tiltmeter Array
47 RESEARCH PROGRAM Grid InSight Compilation 2,389 Channels (2,331 Vertical) (58 Horizontal)
48 Seismic Emission Tomography Kirchhoff migration to image microseisms Ray Tracing Travel Times Before Moveout After Travel Time Moveout
49 Data Analysis Understanding signal and noise issues
50 Stacking Clamping Skeletonizing Semblance Processing Global Microseismic Services
51 Unconventional Reservoirs Key Geophysical Technology Seismic Acquisition Anisotropic Processing Elastic and Acoustic Inversion Surface Attributes Frac Monitoring (Microseismic)
52 Integrated Geosciences & Engineering
53 Wish to thank Key Matador Resources Staff Steve Sinclair Bo Henk Anne L. McColloch Key Global Staff Jerry Henderson Mary Davis
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