朝阳沟-长春岭地区扶余油层油气运移特征  

CHARACTERISTICS OF THE HYDROCARBON MIGRATION IN FUYU OIL RESERVOIR IN CHAOYANGGOU-CHANGCHUNLING AREA

作　　者：柴方源[1,2] 李国会[3] 施立志[3] 王卓卓[3] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]大庆油田有限责任公司,黑龙江大庆163453 [3]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》2012年第6期1-5,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究发展计划（“973”计划）项目（2006CB701403）资助.

摘　　要：朝阳沟-长春岭地区青山口组烃源岩有机质丰度高、厚度大，油气富集是否与其有直接关系一直存在不同的认识。研究表明，朝阳沟至长春岭构造带之间本地烃源岩生烃能力有限，绝大多数原油与其临近的三肇凹陷或王府凹陷具有较好的对比性。南西-北东向展布的河道砂体和南北向的断裂构成了油气由三肇凹陷向朝阳沟构造及由王府凹陷向长春岭构造运移的疏导体系。三肇凹陷与王府凹陷内生成的油气在超压作用下垂向下排到扶余油层，并在流体势场的作用下，沿断层和砂体构成的复合疏导体系向朝阳沟-长春岭低势区侧向运移，进而在构造高部位形成了以构造为主控的岩性-构造油气藏，在面向主力烃源岩区一侧的斜坡部位形成了上倾尖灭的断层-岩性油藏。The hydrocarbon source rocks of Qingshankou Formation in Chaoyanggou-Changchunling area are char- acterized by high organic abundance and big thickness, and whether there are direct relation with the hydrocarbon accumulation or not for the rocks is still in air up to now. The study shows that the hydrocarbon generating ability in the in-situ source rocks is limited between Chaoyanggou to Changchunling structural belts, and moreover there are much better correlation for the most of crude oil in the belts with those in Sanzhao or Wangfu Sags. The hydrocarbon migrating and transporting systems from Sanzhao Sag to Chaoyanggou Structure and from Wangfu Sag to Changchun- ling Structure are formed by the channel sandbodies spread by SW-NE strike and SN fault system. The hydrocarbon generated in the above two sags migrates first downward to Fuyu oil layer vertically on the action of overpressure and furthermore acted by fluid potential field, the above two complex systems combined by the faults and sandbodies lat- erally migrate to the low potential area along Chaoyanggou-Changchunling. Finally the lithological-structural petroleum reservoirs mainly controlled by the structures are built on the peak of the structures; the fauh-lithological oil reservoirs in the pinehout trap of lithology are formed on the slope facing the main hydrocarbon-source-rock area.

关 键 词：朝阳沟-长春岭地区 扶余油层 油气来源 油气运移疏导体系 

分 类 号：TE122.1[石油与天然气工程—油气勘探]