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2011 Workplan

Kurt J. Marfurt

Tim Kwiatkowski

Marcilio Matos

Attribute-Assisted Seismic Processing and Interpretation

AASPI

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AASPI 2011 Workplan

Image processing/algorithm development

• Continued development/calibration of azimuthal intensity algorithm

• Integration of phase residue unconformity attribute into spec_cmp – Marfurt and Davogustto

• Q estimation from phase component of spectral decomposition

• Goloshubin and Silin (2008) mobility attribute

• SOM as Fortran90 algorithms – Atish Roy

• Introduction of supervision into SOM and GTM – Atish Roy

• Improved GLCM texture attributes (speed and usefulness) – Moe Yenugu

Correlating ‘intensity’ of hypothesized fracture sets to production

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SOM applied to GLCM textures

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AASPI 2011 Workplan

Calibration to Geological Control

• Hunton Limestone, Anadarko Basin: correlation of attributes to fractures using outcrops and horizontal image logs – Evan Staples

• Curvature and clay models – Debu Paul, Evan Staples, Araceli Romero, Bo Zhang

• Mississippi Chat, Osage Co., OK: Correlation of attributes and elastic inversion to porosity seen in core and image logs – Moe Yenugu

• Chicontepec Formation, Mexico: correlation of attributes and elastic inversion to depositional environment and porosity via outcrop analogues – Supratik Sarkar and Brad Wallet

• Barnett Shale, Fort Worth Basin: Correlation of elastic inversion to shale facies – Roderick Perez

• Diamond M, Permian Basin: Correlation of production to seismic attributes – Roderick Perez

6c-6Reeds Spring formation, Beaver Lake Dam, Arkansas

Tripolite chert reservoir, Mississippian Formation

6c-7

Coherent energy blended withCoherent amplitude gradientArbuckle Carbonate

(Elibiju et al., 2009)

Acoustic Impedance – Removes the wavelet and tuning, improving resolution

With well ties, provides a more accurate estimate of porosity

Horizon slice along Woodford, Arkoma Basin, OK

N

ZP (g/cm3-ft/s)

High

Low

5 km

8 (Guo et al., 2010; Seismic data courtesy of CGG-Veritas)

2nd deriv

Pos

Neg

0

2nd derivative (negative curvature) of impedance – highlights low-impedance lineaments

faul

t

Collapse in Hunton?

fault

N

Horizon slice along Woodford, Arkoma Basin, OK

9 (Guo et al., 2010; Seismic data courtesy of CGG-Veritas)

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AASPI 2011 Workplan

Calibration to Engineering Control

• Coal-bed methane (Australia) –correlation of attributes to deliverability – Oswaldo Davogustto

• Correlation of core data to surface seismic data, and hydraulic fracturing (Woodford Shale) – Nabanita Gupta

• Forties Field, North Sea – correlation of attributes to sand production, fluid production, seal and base integrity – Sunday Amoyedo

• λρ-μρ mapping of fractured rock and bypassed pay; measurement of spectral changes between reflection from and transmission through fractured rock - Roderick Perez

• Chicontepec, Mexico – correlation of attributes to permeability – Brad Wallet

N

Bo

wl

Do

me

Rid

ge

Do

me

Do

me

Do

me

buildup

11 (Roderick Perez, OU; Seismic data courtesy of Parallel Petroleum LLC)

Bo

wl

Do

me

Rid

ge

Do

me

Do

me

Do

me

buildup

N12 (Roderick Perez, OU; Seismic data courtesy of Parallel Petroleum LLC)

6000 ft CurvPositive

Negative

0

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Shape and control of induced fracturesk1 curvature

2 km

Azimuth

Intensity

Anisotropy

N

Co-rendered k1 curvature

and anisotropy

(Zhang et al., 2010; Seismic data courtesy of Devon Energy)

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AASPI 2011 Workplan

Seismic Processing Algorithm Development

• Improved anisotropy analysis for fractured layered reservoirs (orthotropic symmetry) – Bo Zhang

• 2C by 2C prestack time migration will Alford rotation: Diamond M , Permian Basin – Oswaldo Davagustto

• Prestack gather conditioning for elastic inversion: Chicontepec, Anadarko Basin , Osage Co., … – Kurt Marfurt and Tim Kwiatkowski

Anisotropy of fractured reservoirs

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