View Technical
Program Calendar
Update Member
Profile
Join HGS

HGS News

Grand Canyon Geology Field Trip 2009: Whitewater and Tall Tales

The HGS 2009 Grand Canyon Geology field trip in June turned out to be another exciting trip down the mighty Colorado River! It was a “magic carpet ride into deep time,” according to one participant.

More Articles

HGS General Lunch

Wednesday 28-Jan-09 11:30 AM to 1:00 PM CST

Speaker: David Paddock, Reservoir Characterization Team Leader and Principal Geophysicist
Schlumberger DCS Reservoir Seismic Services USA

Petroleum Club of Houston
800 Bell St., 43rd Floor
Houston Texas 77002 USA
Google Maps | Hotels Near | Yahoo! Maps | Weather Forecast

Phone: (713) 659-1431

Details for "HGS General Lunch"

Seismic Reservoir Characterization of a Gas Shale Utilizing Azimuthal Data Processing, Pre-Stack Seismic Inversion and Ant Tracking
 
David Paddock*, Christian Stolte, Lei Zhang, Javaid Durrani
Schlumberger Data & Consulting Services, Houston

John Young
WesternGeco, Denver

 
Prospective hydrocarbon-bearing zones in the subject gas shale are characterized by gas entrapped in the sediment matrix with some additional open-fracture component. This gas is economically recovered by horizontal drilling and fracturing. We show the results of an integrated workflow to get a good seismic image in the presence of anisotropy, find the sweet spots, and characterize fractures and reservoir risk.
 
 
Seismic azimuthal anisotropic analysis determines the dominant direction of the fast and slow seismic velocities indicative of maximum horizontal stress and / or fracture orientation and intensity. Corrections for HTI medium were applied prior to VTI anisotropic Kirchhoff pre stack time migration (KPSTM). Data processing created a prestack volume as input for inversion and a stacked volume as input for Ant Tracking.
 
Simultaneous inversion of the pre-stack data determined acoustic impedance (AI) and Poisson’s ratio (PR). A blind test of the inverted attributes is very encouraging. Sweet spots may be areas of anomalously low Poisson’s ratio (PR), away from faults, with high velocity anisotropy.
 
Ant Tracking reduces the risk of drilling near faults (a reservoir risk due to expected mineralization) by providing a high resolution image of fractures and faults beyond what can be interpreted from conventional seismic data. Faults were expected to be mineralized, with some mineralization extending out into the surrounding shales.
 
The resulting integration of Poisson's ratio, fractogram, and Ant Tracking provides effective delineation of areas with superior porosity and charge, areas with open fractures, and areas with faulting, outlining likely sweet spots as well as areas to be avoided in drilling.
 
Integration of anisotropic data processing with pre-stack seismic inversion and Ant Tracking provides a superior tool to explore for gas in gas shale.
 
 
 
 
 
 
 
 
 
 
 
 
 

Speaker David Paddock

David Paddock is Reservoir Characterization Team Leader and Principal Geophysicist for Schlumberger DCS Reservoir Seismic Services for the United States.
 

Since September 2000 Dave has been with Schlumberger Data & Consulting Services leading a wide range projects, but with a special emphasis on the onshore U.S. Previous to Schlumberger Dave was a geophysicist at ARCO and Vastar for 18 years, working in the greater Gulf of Mexico and Permian basins.

 

Register by Tuesday   27-Jan-09 11:30 AM  CST
Seats 120
Reserved 111

Pricing

 
Before 27-Jan-09
After 27-Jan-09
Member:
$30.00
$0.00
Non-Member:
$35.00
$0.00
Student Member:
$0.00
Student Non-Member:
$0.00
Emeritus/Life/Honorary:
$15.00
$0.00
Attachments
 

 Event Contact

 Event Coordinator
Arthur Berman Arthur Berman
(713) 557-9076 (713) 557-9076
(281) 565-0215 FAX (281) 565-0215 FAX
http://petroleumtruthreport.blogspot.com/
   

Help increase awareness for this HGS event with these resources!

Add to Favorites • • •

E-mail To A Friend E-mail this event to a friend (requires login).