Evaluation of Formation Capacity and Skin Phenomena of Mishrif Reservoir -Garraf Oil Field

[摘要] Mishrif Formation is the main reservoir in Garraf Oil Field. It is divided into three productive units (M1, L1.1, and L1.2), the unit L2 contains a very small percentage of oil with high majority of water so it is considered to be of a non-economic feasibility. Developing of such reservoir requires a study of its capacity and how the effective communication properties changes laterally. Build up pressure testing was conducted for five wells (A16P, Ga-1, A4P, B5P and C43P) in Garraf oil field. The data have been analysed by Ecrin Kappa Saphir program and well behaviour was detected by pressure and pressure derivative responses (or signature) with time. The results show a difference in capacity with good flowing capabilities. All the wells exhibit a negative skin factor due to stimulation.

[发布机构] University of Baghdad, Baghdad, Iraq^1;Dhiqar Oil Company, Dhiqar, Iraq^2

[关键词] Build-up pressure;Economic feasibilities;Effective communication;Negative skin factors;Pressure derivatives