梨树断陷油气封存机理与成藏关系研究  

Relation between the Hydrocarbon Storage and Accumulation in Lishu Fault Depression

作　　者：逄海明[1] 万丛礼[1] 李九思 Pang Haiming;Wan Congli;Li Jiusi(SINOPEC Northeast Oil and Gas Branch,Changchun,Jilin 130062,China)

机构地区：[1]中国石化东北油气分公司,吉林长春130062

出　　处：《特种油气藏》2018年第6期43-48,共6页Special Oil & Gas Reservoirs

基　　金：中国石化重大科技项目“梨树断陷隐蔽油气藏分布规律与勘探目标评价”(2012P12025).

摘　　要：为查明梨树断陷油气充注与成藏机理,基于钻井地层压力数据,深入分析了研究区地层压力分布、油气封存条件及类型、油气组合等特征。结果表明,梨树断陷发育2套含油气组合,且早期发育高压—超高压流体封存箱;受后期构造活动影响,封存箱内流体发生调整与交换,并在构造稳定区形成原生油气藏,而构造改造区形成次生油气藏。根据构造样式、主充注期与构造活动的匹配关系等,将研究区流体封存箱分为3类6种,流体封存箱控制了油气组合样式及油气富集。油气封存机理研究对准确把握勘探主要目的层,推进高效勘探具有极为重要的指导意义。In order to clarify the hydrocarbon charging and accumulation mechanism,the formation pressure distribution,hydrocarbon storage conditions,classification and hydrocarbon combinations are comprehensively analyzed based on the drilling formation pressure data. Research indicates that there are two hydrocarbon combinations in the Lishu Fault Depression,and a high to ultra-high pressure compartment is developed in the early stage. The fluid within this compartment is adjusted and exchanged due to the influence of later tectonic movement. Primary hydrocarbon reservoirs develop in the tectonic stability zone and secondary hydrocarbon reservoirs develop in the tectonic reconstruction zone. According to the configuration between tectonic pattern,major hydrocarbon charging stage and tectonic movement,the fluid compartment can be classified into three categories and six patterns. The hydrocarbon combination pattern and hydrocarbon accumulation are dependent on the fluid compartment. This research on hydrocarbon storage mechanism could provide certain guidance for identify favorable exploration formation and efficient exploration.

关 键 词：含油气组合 流体封存箱 异常压力 封存机理 梨树断陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]