--> 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)
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3-D VSP’s Provide High-Resolution Previous HitSeismicNext Hit Images for Improved Previous HitReservoirNext Hit Previous HitMonitoringNext Hit 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 Previous HitreservoirNext Hit characterization and Previous HitmonitoringNext Hit is necessary to optimize and increase production from the huge Middle East oil fields. Currently surface Previous HitseismicNext Hit is used to image Previous HitreservoirNext Hit structure and aid in the prediction of Previous HitreservoirNext Hit property changes away from borehole control points. With borehole Previous HitseismicNext Hit or vertical Previous HitseismicNext Hit 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 Previous HitreservoirNext Hit models. In an effort to overcome the limitation of surface Previous HitseismicNext Hit to characterize Previous HitreservoirNext Hit properties, such as porosity and fluid saturations, a new VSP approach was undertaken. Two high-resolution 3-D VSPs were acquired simultaneously with a new surface Previous HitseismicNext Hit survey. At two wells an integrated team comprised of specialists in engineering, drilling, geophysical operations, geophysical applications and Previous HitseismicNext Hit interpretation planned and executed two 3-D VSP projects together with a new 3-D surface Previous HitseismicNext Hit survey. A 126-level multi-component geophone tool, combined with thousands of source points, made this the world’s largest 3-D VSP. The 3-D surface Previous HitseismicNext Hit and 3C 3-D VSP were acquired with the same source points to minimize the associated costs and allow for detailed integration between them. The 3-D VSPs can also be used to monitor saturation changes in the Previous HitreservoirNext Hit. A 3-D VSP can be repeated more often and at lower cost than a full-field surface 3-D Previous HitseismicNext Hit 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 3-D surface Previous HitseismicNext Hit should be acquired. Based on the success of this 3-D VSP pilot, other 3-D VSP projects are being planned to help overcome production and Previous HitmonitoringTop challenges.

 

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