南襄盆地襄枣坳陷深层海相古生界含油气前景初探

THE STUDY OF PETROLEUM-BEARING PROSPECT OF MARINE PALEOZOIC OF THE XIANG-ZAO DEPRESSION IN THE NANXIANG BASIN

杨道庆 何明喜 王荣新 郭双亭 杜建波 罗家群 程喆 季玉瑶

Yang Daoqing He Mingxi Wang Rongxin Guo Shangting Du Jianbo Luo Jiaqun Cheng Zhe Ji Yunyao

中国石油化工股份有限公司, 河南油田分公司, 石油勘探开发研究院, 河南, 南阳, 473132 2. 中国石油化工股份有限公司, 石油勘探开发研究院, 北京, 100083

Henan Oilfield Company Ltd., SINOPEC, Nanyang, Henan 473132, China 2. Exploration & Production Research Institute, SINOPEC, Beijing 100083, China

南襄盆地襄枣坳陷主要为受襄樊—广济断裂控制的南断北超的中新生代箕状坳陷,但中新生界经多年勘探未获突破.通过"造山带北侧油气资源战略选区"课题的调查研究,发现襄枣坳陷周缘及深部分布大片未变质的海相古生界.其中,下寒武统底部含磷泥页岩是潜在的优质烃源岩;下古生界白云岩及内部岩溶侵蚀面形成较好储集空间;下古生界含膏白云岩是潜在的盖层,具备形成油气的基本地质条件,但热演化程度偏高.襄枣坳陷深部海相古生界油气是值得深入探索的新层系和新领域.

The Xiang-Zao Depression of the Nanxiang Basin is a half graben-like sag in Mesozoic-Cenozoic with faulted in the south part and overlapped in the north,which is mainly controlled by the Xiangfan-Guangji fault,and has not been a breakthrough through many years of exploration in the Mesozoic-Cenozoic.Through the "petroleum sources of strategic electoral districts on the northern edge of the Qinling-Dabie Orogenic Belt" subject research,found that nonmetamorphose rock of Paleozoic marine strata was distributed in the periphery of Xiang-Zao Depression and its deep part.Among which,mudstone-shale containing phosphor is a potential high-quality source rocks at the bottom part of the Lower Cambrian;Dolomite and internal erosion surface formation are better reservoir strata in the Lower Paleozoic;Lower Paleozoic Dolomite containing paste is potential covered layer,which forms the basic geological conditions of oil-gas.But the source rocks are having high degree of thermal evolution.Paleozoic oil-gas of deep marine strata in the Xiang-Zao Depression is the new layer system and a new field,which is worth in-depth exploration.

全国油气资源战略选区调查与评价项目(XQ-2007-02)

https://doi.org/10.11781/sysydz200902177