川东石炭系碳酸盐岩岩性气藏形成的几种方式

FORMATIVE TYPES OF LITHOLOGICAL GAS POOLS IN CARBONIFEROUS CARBONATES IN EASTERN SICHUAN

陈宗清

Chen Zongqing

四川勘探开发研究院

Sichuan Research Institute of Petroleum Exploration and Development

本文在分析川东石炭系黄龙组的岩性、岩相与孔隙关系及影响岩性圈闭的一些基本因素的基础上,认为本区碳酸盐岩的岩性圈闭有三种型式,即沉积相圈闭式、岩性上倾尖灭圈闭式和复合岩性圈闭式.在褶皱强烈和构造复杂地区,有利于形式复合岩性圈闭.

The relations among the lithology, rock fades and porosity, as well as the factors controlling the formation of lithological traps in Huanglong Formation, Carboniferous system, Eastern Sichuan were analysed. Three types of lithological traps of carbonates in the area were suggested, i.e. sedimentary facies trap, lithological updip trap and composite lithological trap. The intensely folded and the areas with complex structures are favourable for the formation of composite lithological traps.

https://doi.org/10.11781/sysydz198903234