Through systematic comparative study on the kinematic characteristics of the three branches of Boban segment, Tan-Lu fault belt, such as geometry structure style, fault activity rate, amount of extension, the advantage of the extension direction, and comparative analysis of tectonic evolution characteristics based on balanced cross-section restoration, this paper summed up the three corresponding structural genetic models, which are oblique stretch-weak strike slip reformed, oblique stretch-strong slip superimposed, and continuing strong strike-slip pull-type, and expounded the different control effects of various genetic evolution models on the formation of traps, reservoir development and hydrocarbon migration, established the response relationship between structure and hydrocarbon accumulation. The results show that the southern Bohai Sea is in the double stress field since the Cenozoic era, which are respectively north-south extension caused by mantle uplift and NE-SW trending dextral shear caused by oblique compression of Pacific plate, the three branches of the Tanlu fault belt have the same tectonic evolution stages. However, as dominant stress field are different in different times in different regions, their structure and evolution characteristics are significantly different, which controls and influences the difference of hydrocarbon accumulation in the oil and gas accumulation period, horizon, scale between the three branches.
Xiao Shuguang Wei Ajuan Wang Yuechuan Zhao Zhiping Wu Qingxun. Structural characteristics of the various branches of Bonan segment, Tanlu fault belt and their controlling effects of hydrocarbon accumulation[J]. Chinese Journal of Geology, 2017, 52(2): 375-389.