摘要
在准噶尔盆地中拐凸起已经发现了一批岩性油藏,但难以评价其规模。从古凸起演化、层序地层学、沉积体系、输导体系等方面入手,剖析了侏罗系岩性油藏的控制因素,指出古凸起高部位有利于形成地层圈闭,斜坡区有利于形成地层岩性圈闭;南北向的沉积体系与东南倾的鼻状构造形成了构造与沉积体系的斜交型配置,有利于形成地层岩性圈闭;断裂是控制古生中储型岩性油藏形成的关键因素;坡折带之下的三角洲前缘有利于岩性油藏的形成;低位域八道湾组和高位域三工河组具备岩性油藏形成的条件,有良好的勘探前景。
Several Jurassic stratigraphic reservoirs have been found in Zhongguai uplift, Junggar basin, but their reservoirs have proved difficultly because of complex dominant factors. Dominant factors of stratigraphic reservoir are discussed by analysis of evolution of the uplift, sequence stratigraphy, Jurassic sedimentary system and drainage system. The pinch-out type of stratigraphic traps developed in Zhongguai uplift and lense-shaped stratigraphic traps developed in its slop. It＇s superiority of forming stratigraphic trap that the Jurassic sedimentary system derived from the North crossing obliquely the Southeast-dip slop. The faults are dominant {actors to Jurassic reservoir- Permian source. The lenses-shaped reservoir developed down the slope point, deltaic front, and the sphenoid reservoir developed upper the slope point. It has favorable oil prospecting that the stratigraphic reservoir developed in the LST Badaowan formation and the HST Sangonghe formation.
出处
《天然气地球科学》
EI
CAS
CSCD
2006年第5期703-707,共5页
Natural Gas Geoscience
基金
中国石油天然气股份有限公司前期评价研究项目(编号:KTQQ-2004-006)资助
关键词
准噶尔盆地
侏罗系
岩性油藏
沉积体系
层序地层学
Junggar basin
Jurassic
Stratigraphic reservoir
Sedimentary system
Sequence stratigraphy.
