地质通报2011，Vol.30Issue(2)：349-356,8.
中扬子地区下古生界海相泥-页岩含气勘探远景
Exploration prospect of gas-bearing marine mudstone-shale in Lower Palaeozoic in the central Yangtze area,China
摘要
Abstract
Based on the data of geochemistry, gas show of drilling and outcrop of the Lower Paleozoic shale, this paper analyzed exploration prospects of Lower Paleozoic shale gas in the central Yangtze area. The analysis indicate that the Lower Paleozoic marine shale included Lower Cambrian Shuijingtuo Formation (or Niutitang Formation), Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation in the central Yangtze area, which have rich organic matter content, fine kerogen type, high thermal evolution (mature to over mature), were valid source rocks of shale gas. The central Yangtze area has experienced multiphase tectonic movements since Caledonian. The shale reservoirs property was improved by tectonic uplift and compression, and accumulation for shale gas was improved. Lower Cambrian shales and/or mudstones are prospect for shale gas exploration in western Hunan and Hubei and southern Jianghan plain. While the commercial gas flow in Silurian shales and/or mudstones was revealed by drilling, which indicated that the potential of exploration for shale gas is great in western Hubei and eastern Chongqing.关键词
中扬子区/水井沱组(∈1sh)/五峰组(O3w)-龙马溪组(S1l)/页岩气/勘探远景分类
天文与地球科学引用本文复制引用
李艳霞,林娟华,龙幼康,李净红,张丽雅..中扬子地区下古生界海相泥-页岩含气勘探远景[J].地质通报,2011,30(2):349-356,8.基金项目
中国石油大学(北京)油气资源与探测国家重点实验室开放课题《复杂构造区多重海相烃源灶变迁及油气供给》(编号:2009002) （北京）
