东营凹陷沙三下亚段页岩气前景分析

摘要

Shale gas has been listed as a new type of mineral resource recently in China. Its exploration and devel-opment has been paid great attention. Dongying sag is located in Luxibei plains. It is a main producing area of Shengli oilfield. Oil and gas resources are rich in Paleogene strata. It will become one of the key area of shale gas exploration and development in our country in the next step. Based on the core analysis results of No. 38 Niu well in Dongying sag, porosity, total organic carbon content, thermal evolution degree and the brittleness mineral content of mudstone at the bottom of the third section of Shahejie formation in Dongying sag have been analyzed comprehen-sively. It is predicated that there is bright future for shale gas prospecting in this area.%页岩气作为我国最近列入的新型矿产，其勘探与开发引起了全国的高度重视。位于鲁西北平原区的东营凹陷是胜利油田的主产地，古近纪地层中油气资源丰富，必将成为我国下步页岩气勘查与开发的主战场之一。该文在东营凹陷牛38井的取芯分析结果基础上，对东营凹陷沙三下亚段的页岩孔隙度、总有机碳含量、热演化程度及脆性矿物含量进行系统分析，预测该段地层具备页岩气藏的形成条件。