摘要
青西油田下白垩统下沟组(K1g)为深层裂缝-孔隙型砾岩储集层,油藏埋深4200～4600m,基质孔隙度小于8%,基质渗透率小于1×10-3μm2.由于砾岩储集层内高角度裂缝发育,改善了它的渗流性能。针对这类低孔、低渗透储集层,通过岩石成分、孔隙类型及组合、孔隙结构、核磁共振、测井评价及测试等技术,并结合裂缝平面预测结果,进行储集层预测,取得了良好的效果。
The conglomerate reservoir in Xiagou formation of Lower Cretaceous(K 1 g)in Qingxi oilfield is a kind of deep fratural-porous reservoir.Oil pool is usually buried in4200～4600m in depth.The matrix porosity is less than8%,the matrix permeability is less than1×10 -3 μm 2 .Because high-angle fractures are well developed in the reservoir,flowing performance of it is improved.By using some techniques of rock composition,pore type and assemblage,pore structure,NMR,well log and test integrated with the results from fractural planar predic-tion,we make a research in reservoir prediction and get good effects.
出处
《新疆石油地质》
CAS
CSCD
2003年第1期38-40,共3页
Xinjiang Petroleum Geology
关键词
酒泉盆地
青西油田
下白垩统
储集层
砾岩
裂缝
Jiuquan basin
Qingxi oilfield
Lower Cretaceous
conglomerate reservoir
fracture
