苏里格地区SWJ区块气水特征及识别方法应用分析

Air Water Characteristics in SWJ Block and Their Identification and Application

鄂尔多斯苏里格气田SWJ区块储层横向变化大,且气水关系复杂,不同含气、含水砂体之间无统一的气水界面。实钻情况表明,主产层山1段含气性较好,盒8段普遍含水。该研究区块储层流体性质测井判别采用了深探测电阻率比较判别法、密度-中子孔隙度曲线重叠法、电阻率-孔隙度曲线综合直观判别法等多种判别方法,符合率均在80%以上。经过对比分析认为,电阻率-孔隙度曲线综合直观判别法与密度-中子孔隙度曲线重叠法在SWJ区块流体判别中符合率最高,适应性最好。

In Sulige SWJ block reservoir, Ordos, lateral change is great, the air-water relation is complex without unified gas water interface between different gas and water sand bodies. Real drills have indicated that in the main production layer box 8 period is commonly with water and hydrocarbon content of mountain 1 period is relatively good. Logging discrimination of store laminar flow adopted the methods of deep detecting resistivity comparison and discrimination, density-neutron acoustic porosity curve overlapping, neutron porosity curves overlapping, resistivity-porosity curve comprehensive direct discrimination, and the coincidence rate was over 80%. Comparative analysis indicates that resistivity-porosity curve comprehensive direct discrimination method and density-neutron porosity curves overlapping method achieved the highest coincidence rate in Sue 59 block fluid discrimination, with the best adaptation and good results.