对塔里木盆地雅克拉油气田成藏条件的认识

ON THE FORMATION CONDITIONS OF THE YAKELA OIL/GAS FIELD IN THE TARIM BASIN

何海泉 张忠先 唐一丹

He Haiquan Zhang Zhongxian Tang Yidan

地质矿产部华北石油地质局 2. 地质矿产部西北石油地质局

North China Bureau of Petroleum Geology, Ministry of Geology and Mineral Resources 2. Northwest China Bureau of Petroleum Geology, Ministry of Geology and Mineral Resources

雅克拉油气田的发现,是我国在下古生界寻找大油大气的重大突破.本文试从生、储、盖、圈、运、保等六方面论述该油气田的成藏条件,特别对控制油气田大小的主要条件,储层、圈闭作了进一步分析,指出下奥陶统及其以下地层组成的古残山,其上为侏罗一三叠系地层直接所披盖的圈闭成藏条件最为有利.

The authors of this paper briefly describe the formative conditions of the Yakela Oil/Gas Field in the following aspects: oil generation, reservoirs, caps, traps, migration and preservation. Emphasis are laid on the analysis of main controlling factors, such as reservoirs and traps in oil/gas fields. It is concluded that the best formative condition of oil/gas pools is the presence of ancient remanent hills in the basin,which consist of Lower Ordovician and its underlying systems, and are directly draped with Triassic and Jurassic systems. Finally, it is suggested that this oil/gas field is a layer-block type of oil/gas pools controlled by lithology,in which the main body of reservoir space consists of a net of linked pores,caves and fractures surrounded by side water and bottom water.

https://doi.org/10.11781/sysydz198901001