川西坳陷中段中、新生代构造运动与须家河组生、储、盖层发育关系研究

The Relationship of Mesozoic and Cenozoic Tectonic Movement to Xujiahe Reservoir Capability in the Middle West Sichuan Depression

川西坳陷中段中、新生代的构造运动主要表现为:早印支期的抬升、褶皱,构造雏形形成阶段。晚印支期褶皱、隆起发育,燕山期的挤压改造阶段。喜马拉雅运动对该区影响相对较小,仅形成了一些浅层断裂。研究表明,构造运动控制了坳陷中段的形成和发展,不仅控制了须家河组生储盖的发育,还控制着储层的孔隙度、渗透率变化。渗透率与孔隙度相关性较小,主要与裂缝有关。分析表明储层裂缝发育地带是有利的勘探区域。

Mesozoic and Cenozoic tectonic movement in the middle west Sichuan depression was characterized by uplifting and folding resulting in the tectonic embryonic form in the early Indo-Chinese epoch and folding and uplifting in late Indo-Chinese epoch and compression and reformation in the Yanshanian epoch The study indicates that the Xujiahe reservoir capability is controlled by the mentioned-above tectonic actions.