牛庄洼陷烃源岩体的几何学描述

Geometric Description of Source Rock Bodies in the Niuzhuang Subdepression

油气资源评价，应该从以构造单元为评价单元，走向以蕴含于构造单元内的生成油气的地质体为单元。界定生成油气的烃源岩体，要综合应用地质、有机地球化学、地球物理等学科从三维空间上来进行。本文以牛庄洼陷为例，具体地使用岩心、测井曲线、古生物化石、有机地球化学指标、地震剖面等资料，描述了沙四上亚段的低熟及成熟烃源岩的几何形态，以及它们在生成演化上的相互联接。

The evaluation of hydrocarbon resources is nowadays based on the elemental unit of hydrocarbon-bearing geological bodies within structural units instead of on the structural unit itself. The discrimination of source rock bodies requires three-dimensional treatment of geological, geochemical and geophysical data. Based on the data of cores, logging curves, paleontologic fossils geochemical parameters and seismograms, the present paper, taking the Niuzhuang subdepression as an example,described the geometric shape of low-mature and mature source rocks in the upper submember of the Shasi section,moreover, the paper discussed the mutual relationship of them both in genesis and evolution.