三肇凹陷油藏成藏条件研究  

STUDY OF RESERVOIR-GENERATING CONDITIONS IN SANZHAO SAG

作　　者：姜雪源[1] 邵宪志[2] 

机构地区：[1]中国科学院广州地球化学研究所,广东广510640 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2010年第5期48-52,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：三肇凹陷是大面积的岩性油藏区,由于资料少,对油气聚集规律认识较差,相当长时间都不能有效地进入工业化生产.应用地震-地质方法对砂岩分布作出了较好的预测,特别是通过古构造发育史的研究,对三肇凹陷的油藏成藏条件进行了深入分析,认为油气运移期以前形成的古构造是油气运移的指向,岩性非均质、断层遮挡和坡折带是斜坡构造形成石油富集的条件,断续条带状、透镜状、小片状砂体是形成油藏的最小单元.揭示了三肇凹陷岩性油藏形成大面积纯油区其特殊的油气聚集规律和成藏条件.Sanzhao Sag is a large-area lithologic reservoir area which had not been put into production effectively for a long time because of little data and weak understanding of hydrocarbon accumulation rules before large-scale development. Sandstone distribution is predicted by using seismic-geology method. After deep study on the reservoir-generating conditions in Sanzhao Sag especially by researching on the development history of palaeostructure, the result shows that the palaeostructure formed before hydrocarbon migration is the hydrocarbon migration direction, and lithologic aeolotropy, fault screen and break play are the reservoir-generation conditions in the ramp structure, and interrupted banded, lens shaped and chip shaped sandy body are minimum units of reservoir generation, which suggests that the large-scale pure oil area of lithologic reservoir in Sanzhao Sag has particular hydrocarbon accumulation rules and reservoir-generating conditions.

关 键 词：三肇凹陷 古构造 鼻状构造 成藏条件 

分 类 号：TE122.1[石油与天然气工程—油气勘探]