--> Abstract: First Microseismic Monitoring Results for a Middle East Carbonate Reservoir: Minagish Oil Field Case Study, Western Kuwait, by Emmanuel Gaucher, Christophe C. Maisons, Abdullatif Y. Al-Kandari, Kamal Al-Atroshi, and Jassim M. Al-Kanderi; #90077 (2008)
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First Microseismic Previous HitMonitoringNext Hit Results for a Middle East Carbonate Previous HitReservoirNext Hit: Minagish Oil Field Case Study, Western Kuwait

Emmanuel Gaucher1*, Christophe C. Maisons1, Abdullatif Y. Al-Kandari2, Kamal Al-Atroshi2, and Jassim M. Al-Kanderi2
1Magnitude, France
2KOC
*[email protected]

During the first quarter of 2006, a microseismic Previous HitmonitoringNext Hit pilot was implemented in Minagish field, western Kuwait. The target zone was the Minagish Oolite, a microporous carbonate Previous HitreservoirNext Hit, about 350 ft thick and around 9,600 ft deep (below mean sea level). The Previous HitmonitoringNext Hit antenna, an SST-500 wireline tool of four 3C-geophones, was temporarily deployed in an abandoned well on the eastern flank of the field. The purpose of the surveillance was: (1) to assess the occurrence of microseisms induced by the production operations and especially the water injection along the flank; then (2) to characterize such microseismicity; and finally (3) to measure the effective network sensitivity with depth. Such a microseismic pilot survey should provide insight on the added-value that this Previous HitmonitoringNext Hit technique may bring to the production and Previous HitreservoirNext Hit engineers. During the 50 days of effective Previous HitmonitoringNext Hit, about 2,000 microseisms were identified and 600 events, from magnitude -2.0 to 0.3, were located. The large majority was distributed on the western side of a NNE-trending line as consistent with the direction of the local oil-water contact. A more detailed analysis also highlighted clusters of microseisms between injection-production doublets. In fact, one doublet was believed to be connected, which has been confirmed. Additionally, the depth survey showed that microseismic Previous HitmonitoringTop was still efficient above the Shu’aiba Formation. The pilot’s objectives were successfully attained and the results were beyond our expectations. Hence, it is proposed to deploy a cost-effective and optimized microseismic network suitable for the entire Minagish field.

 

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