摘要
酒泉盆地青西油田下白垩统泥云岩(包括泥质白云岩、白云质泥岩及白云岩)富含长英质微粒等特殊的岩石成分,储集层埋藏深于3600m,基质孔隙度小于5％,基质渗透率小于0.5mD,属典型的低孔、特低渗特殊储集层。针对这类低渗透储集层,采用非常规实验分析、裂缝描述等技术,通过沉积相带、岩石成分、孔隙类型及组合研究,并结合裂缝平面预测成果进行有利储集层预测,取得了良好的勘探效果。
Pelitic dolostone, including argillaceous dolostone, dolomitic mudstone, and dolostone, in the Xiagou Formation, Lower Cretaceous, Qingxi Oilfield, is of reservoir with lowest permeability and porosity, which has been buried beneath 3600m with abundant felsic micrograin, its matrix porosity is less than 5% and matrix permeability less than 0. 5mD. The analyses of sedimentary facies zone, rock components, pore types and matching features have been used for forecasting the distribution of favorable reservoirs and a better exploration effect is attained
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2004年第6期47-50,共4页
Petroleum Exploration and Development
关键词
青西油田
下白垩统
泥云岩
裂缝-孔隙型储集层
Qingxi Oilfield
Low Cretaceous
pelitic dolostone
fissure-pore type reservoir
