摘要
以松辽盆地东南缘十屋断陷为例，详细研究了储集层内分布的裂隙类型、密度、张开度，并对影响裂隙发育的因素及裂隙形成机制进行了探讨。研究结果表明，微裂隙的主要类型和分布部位与宏观大裂隙是一致的。储集层裂隙发育带主要分布在构造曲率高值区，同时也与埋藏深度、岩性、地层厚度及储集层孔隙度和与最近断层的距离存在非线性相关关系。区域水平挤压应力场是造成储集层裂隙形成的动力来源。
The kinds, density and open width of the fractures in Shiwu faultdown are studied systematically, in which the mechanics and factors controlling fractures are mentioned. It is concluded that the distrubution and the main kinds of microfracture are correspond with those of macrofracture. The belts of high density fracture in reservoir are located in the areas with high structural curvature value, which have a nonlinear relationship with the depth, rock types, stratigraphic thickness, reservoir porosity and the distance from the faults. It is the structural compression stress that leads to the formation of microfracture.
出处
《中国海上油气（地质）》
1999年第2期92-96,共5页
China Offshore Oil and Gas(Geology)
