川西坳陷新场气田成藏环境的划分及识别标志

DIVISION AND IDENTIFICATION MARKS OF POOL-FORMING ENVIRONMENT IN XINCHANG GAS FIELD OF THE WEST SICHUAN DEPRESSION

朱彤 叶军 王胜

ZHU Tong YE Jun WANG Sheng

中国石化新星石油公司西南石油局研究院, 四川成都 610081

Research Institute of Petroleum, Southwest Bureau of Petroleum, SINOPEC, Chengdu, Sichuan 610081, China

新场气田是川西坳陷中最具规模的典型的多层含气、多类型气藏叠置而成的复杂气田。通过三维地震解释成果的精细描述,依据须家河组超压气源的压力分带、气水赋存状态以及所建立和预测的6类气藏类型,在提出了“成藏环境”这一多因素综合性概念的基础上,作者划分出新场气田5种不同成藏机制的成藏环境类型,并对各成藏环境的成藏条件和主控因素进行了分析,确定了各成藏环境的识别标志。

Xinchang gas field is a typical complex gas field in the West Sichuan Depression which has already taken shape and is bearing gas in multiple strata and superimposed by,ulti-type gas pools.Based on the pressure zonation and gas-water occurrence of overpressure gas source in the Xujiahe Formation as well as six types of gas pools established or predicted,the multi-factor comprehensive concept "pool-forming environment" is proposed by fine description of 3-D seismic interpretation results. Furthermore,five types of pool-forming environment with different pool frming mechanism are classified in Xinchang gas field,the pool-forming conditins and,main controlling factors of each pool-forming environment are analysed,and the identification marks of each pool-forming environment are suggested.

“九五”国家重点科技攻关项目(96-110-03-01-03).

https://doi.org/10.11781/sysydz200102174