南鄱阳凹陷油气系统分析及勘探前景
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摘要
综合分析了南鄱阳凹陷生、储、盖等基本油气地质条件,选取有代表性的地震解释剖面、钻井剖面,建立64个一维虚拟点,以盆地模拟为手段,按照动态、正演方式,进行油气系统研究.依据油气聚集区-主力烃源岩-主要储层-主要成藏期(可靠级别)的系统命名原则,认为存在南鄱阳凹陷—P1,P2—P,K3—K3～E(潜在的)再生烃油气系统.并对系统中的油气生成、运聚、保持、破坏过程进行了阐述,辅以相应的油气显示佐证,并分别计算了印支期、燕山期、喜马拉雅期的生烃量.在油气系统研究的基础上,结合已钻探井失利原因分析,进行勘探评价.
The geological conditions of Southern Poyang Sag, such as source, reservoir and cap, are synthetically analyzed. Sixty four one dimensional virtual points are built up from representative seismic section and drilling section, and the petroleum system of Southern Poyang Sag is studied based on the quasi 3D basin modeling which emphasizes dynamic and forward simulation. It is held that there is a hydrocarbon regenerating petroleum system, which is named as Southern Poyang Sag—P 1,P 2—P, K 3—K 3~E (potential) according to the nomenclature of hydrocarbon accumulation zone—main hydrocarbon source rocks—main reservoirs—important pool formation stages (reliable grade). The process of the generation, migration, accumulation, conservation and destruction of the hydrocarbon in the petroleum system is discussed, which is verified by oil and gas shows. The hydrocarbon production in Indosinian epoch, Yanshan phase and Himalayan phase is separately predicted. The exploration potential of Southern Poyang Sag is evaluated based on the study of the petroleum system and the analysis of the causes of drilling failure in the past.
The geological conditions of Southern Poyang Sag, such as source, reservoir and cap, are synthetically analyzed. Sixty four one dimensional virtual points are built up from representative seismic section and drilling section, and the petroleum system of Southern Poyang Sag is studied based on the quasi 3D basin modeling which emphasizes dynamic and forward simulation. It is held that there is a hydrocarbon regenerating petroleum system, which is named as Southern Poyang Sag—P 1,P 2—P, K 3—K 3~E (potential) according to the nomenclature of hydrocarbon accumulation zone—main hydrocarbon source rocks—main reservoirs—important pool formation stages (reliable grade). The process of the generation, migration, accumulation, conservation and destruction of the hydrocarbon in the petroleum system is discussed, which is verified by oil and gas shows. The hydrocarbon production in Indosinian epoch, Yanshan phase and Himalayan phase is separately predicted. The exploration potential of Southern Poyang Sag is evaluated based on the study of the petroleum system and the analysis of the causes of drilling failure in the past.
引文
1中国石油开发公司区域勘查项目经理部 .江西中北部油气地质综合研究成果报告 (科研报告 ). 1 995.
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[1] 马贡LB,道WG.含油气系统——从烃源岩到圈闭[M].张刚译.北京:石油工业出版社,1998.13-23.
[2] 赵宗举,王根海.叠合盆地评价及其油气系统研究方法——以中国南方中、古生界海相地层为例[J].石油学报,2002,23(1):11-18.
[3] 戚厚发,孔志平.我国较大气田形成及富集条件分析[A].戴金星主编.天然气地质研究[C].北京:石油工业出版社,1992.8-14.
[4] 赵文智,何登发.石油地质综合研究导论[M].北京:石油工业出版社,1999.186.
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