摘要
在隐蔽性油气藏勘探理论指导下,相继在松辽盆地南部发现了亿吨级的大情字井油田和英台油田。通过地质条件研究,发现松南岩性油藏具有“三低”特点,即低孔隙度、低渗透率、低含油饱和度;储层以薄层、薄互层为主;平面上变化大——顺物源方向储层连通性好,横切物源方向连通性差;油水分布主要受沉积相带的控制,岩性、物性对含油性起主控作用。针对岩性油藏的薄互层识别难度大、“三低”油层产能低、油水关系复杂、油层识别难等问题,形成了适合不同地质特点的储层识别评价技术、复杂油水层识别技术和“三低”油层增产技术系列,为深入开展岩性油藏勘探提供技术保障。
With the guiding of the theory of subtle oil/gas reservoirs exploration, Daqingzi and Yingtai oilfields with the reserves ofhundred million tons in southern Songliao Basin have been discovered successively. Through study on the geological condition, thelithologic oil reservoirs is characterized by 'three-low' oil layer, which include low porosity, low permeability and low oil-bearingsaturation; in plan view, it can be seen the large changes that the good connectivity between oil reservoirs along the direction of materialsources, whereas not good connectivity between them in transverse source direction; the distribution of oil and water are mainly controlledby depositional facies belts, and the petroliferous property is also mainly controlled by rocks and physical property. Aiming at theproblems covering thin-mutual oil layer identification, low production of 'three-low' oil layer as well as complex oil -water relation, inlithologic reservoirs distributed in southern Songliao Basin , technical research works has been initiated, gradually developing a series oftechniques, such as reservoir identification and appraisal, complex oil-water layer identification and 'three-low' oil layer productionincrement, providing technique safeguards for the full-scale lithologic reservoir exploration.
出处
《中国石油勘探》
CAS
2006年第3期24-29,共6页
China Petroleum Exploration
关键词
岩性油藏
地质条件
勘探技术
松辽盆地南部
lithologic reservoir
geologic condition
exploration techniques
southern Songliao Basin
