--> Abstract: 3-D VSP’s Provide High-Resolution Seismic Images for Improved Reservoir Monitoring and Characterization, by Klaus Müller, Mariam Al-Baloushi, Omar Al-Jeelani, William Soroka, Samer Marmash, Bjorn Paulsson, David Dushman, and Martin Karrenbach; #90077 (2008)
[First Hit]

Datapages, Inc.Print this page

Previous Hit3-DNext Hit VSP’s Provide High-Resolution Seismic Images for Improved Reservoir Monitoring and Characterization

Klaus Müller1*, Mariam Al-Baloushi1**, Omar Al-Jeelani1, William Soroka1, Samer Marmash1, Bjorn Paulsson2, David Dushman2, and Martin Karrenbach2
1ADCO
2Paulsson Geophysical Services, USA
*[email protected]
**[email protected]

Enhanced reservoir characterization and monitoring is necessary to optimize and increase production from the huge Middle East oil fields. Currently surface seismic is used to image reservoir structure and aid in the prediction of reservoir property changes away from borehole control points. With borehole seismic or vertical seismic profile (VSP) images, which provide better vertical resolution and higher signal-to-noise ratio, it is possible to observe more detail and build more accurate reservoir models. In an effort to overcome the limitation of surface seismic to characterize reservoir properties, such as porosity and fluid saturations, a new VSP approach was undertaken. Two high-resolution Previous Hit3-DNext Hit VSPs were acquired simultaneously with a new surface seismic survey. At two wells an integrated team comprised of specialists in engineering, drilling, geophysical operations, geophysical applications and seismic interpretation planned and executed two Previous Hit3-DNext Hit VSP projects together with a new Previous Hit3-DNext Hit surface seismic survey. A 126-level multi-component geophone tool, combined with thousands of source points, made this the world’s largest Previous Hit3-DNext Hit VSP. The Previous Hit3-DNext Hit surface seismic and 3C Previous Hit3-DNext Hit VSP were acquired with the same source points to minimize the associated costs and allow for detailed integration between them. The Previous Hit3-DNext Hit VSPs can also be used to monitor saturation changes in the reservoir. A Previous Hit3-DNext Hit VSP can be repeated more often and at lower cost than a full-field surface Previous Hit3-DNext Hit seismic survey. The results of a time-lapse VSP can be used to determine if 4-D or time-lapse effects are detectable and verify when a full-field Previous Hit3-DNext Hit surface seismic should be acquired. Based on the success of this Previous Hit3-DNext Hit VSP pilot, other Previous Hit3-DTop VSP projects are being planned to help overcome production and monitoring challenges.

 

AAPG Search and Discovery Article #90077©2008 GEO 2008 Middle East Conference and Exhibition, Manama, Bahrain