应用成藏门限理论评价吐哈盆地前侏罗系油气资源潜力

APPLY POOL-FORMING THRESHOLD THEORY TO EVALUATE PRE-JURASSIC RESOURCE POTENTIAL OF THE TURPAN-HAMI BASIN, NORTHWESTERN CHINA

左胜杰 贾瑞忠 庞雄奇

Zuo Shengjie Jia Ruizhong Pang Xiongqi

中国石化集团 国际石油勘探开发有限公司, 北京, 100083 2. 中国石化 中原油田分公司勘探开发研究院, 河南 濮阳 457001 3. 石油大学 石油与天然气成藏机理教育部重点实验室, 北京102249

International Petroleum Exploration and Production Corporation, SINOPEC, Beijing 100083, China 2. Research Institute of Petroleum Exploration and Development, Zhongyuan Oil field, SINOPEC, Puyang, Henan 457001, China 3. Key Laboratory for Hydrocarbon Accumulation Mechanism, Ministryof Education, University of Petroleum, Beijing 102249, China

针对油气区远景资源潜力评价中缺乏定量依据的问题,提出了一种评价油气远景资源潜力的新概念———成藏门限,论述了油气成藏门限的地质含义及地质证据,并应用基于成藏门限理论开发的"油气成藏体系定量评价系统"对吐哈盆地前侏罗系油气资源潜力进行了定量评价,计算其油、气远景资源潜力分别为3.354×108t和2652×108m3,原油资源探明率仅为15%,表明吐哈盆地前侏罗系仍具较大勘探潜力。

One of the key tasks of petroleum explorationist is to evaluate resource potential of various petroliferous basins.The Pre-Jurassic Formations in Turpan-Hami basin,located in Xinjiang province in the northwest of China,have been explored for several years,but its quantitative resource potential is still unclear.A new concept for petroleum resource potential assessment that is called hydrocarbon pool-forming threshold has been proposed.It refers to the least hydrocarbon amounts dissipated during the process of pool formation in petroliferous basin.The existence of hydrocarbon pool-forming threshold has been proved by statistical analysis,physical and numerical simulation and geological phenomena.Due to the re-lative magnitude of hydrocarbon generation amount and its potential dissipation amount,different basins have different oil and gas resource potential.Only the basins that had entered the pool-forming threshold have exploration potential.By utilizing the new theory,the oil and gas resources of the Pre-Jurassic formations in Turpan-Hami basin have been calculated to be 3.354×108 tons and 2 652×108 m3 respectively.The proved ratio of oil is only 15%,which indicates the great potential of Turpan-Hami basin for further exploration.

国家科技攻关项目(2001BA605A09)。

https://doi.org/10.11781/sysydz200504321