渤东凹陷东营组烃源岩评价

Evaluation on Hydrocarbon Source Rocks of the Dongying Formation in Bodong Depression

渤东凹陷是渤海海域下一步油气勘探的重点地区之一。本文通过对渤东凹陷单井烃源岩的有机地球化学分析和与渤中凹陷烃源岩的对比研究,结合渤东凹陷盆地模拟成果,得出以下认识:渤东凹陷南部东营组半深湖-深湖相泥岩的有机质丰度高,有机质类型好,有机质演化已处于成熟阶段,因而东营组暗色泥岩具有较高的生烃潜力,是一套良好的烃源岩层。

The Bodong depression is an important region for future hydrocarbon exploration in Bohai sea area. In this paper, based on the geochemical analysis of hydrocarbon source rocks collected from an individual well, the comparison with those of the hydrocarbon source rocks from the Bozhong depression, and the basin simulation of the Bodong depresion, it can be summarized that the mudstone of the semi-deep lacustrine and deep lacustrine phases in the Dongying Formation, which is distributed in the southern part of Bodong depression, contain high content of maturated organic matter. Therefore, it is believed that mudstone in the Dongying Formation is a set of good hydrocarbon source rock with good hydrocarbon-generating potential.