四川中坝气田雷口坡组成藏条件及油气主控因素

Main Control Factors of Hydrocarbon Accumulation of Gas Trap of the Leikoupo Formation in the Zhongba Gas Field, Sichuan

通过对四川盆地西北部中坝气田中三叠统雷口坡组气藏已发现油气与有利沉积相带、局部构造、等关系的分析,结合试采试油资料与储层厚度、物性与录井显示关系的统计分析,总结认为油气成藏发育了多套烃源岩,具有良好的储集条件和保存条件。通过对各个构造运动阶段雷口坡气藏被改造与再形成的分析,提出油气主控因素是后期构造运动的影响,主要经历了印支期、燕山期和喜山期构造运动的改造形成的古圈闭,油气藏受到破坏然后再形成的整个过程。该主识对中坝气田未来的勘探开发具有指导意义。

This paper believes that many sets of source rocks were developed in gas trap of the Leikoupo Formation in the Zhongba gas field, Sichuan based on sedimentary facies, structure and logging data. The study indicates that tectogenesis is major control factor for the oil and gas.