断陷盆地岩浆侵入对页岩气的富集作用

万丛礼,李钜源,金强,赵勇,杨志伟

doi:10.11764/j.issn.1672-1926.2011.06.1088

天然气地球科学 >

2011 , Vol. 22 >Issue 6: 1088 - 1092

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.06.1088

非常规天然气

断陷盆地岩浆侵入对页岩气的富集作用

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1.胜利油田油气集输总厂地质所，山东东营 257000；
2.胜利油田地质科学研究院，山东东营 257000；
3.中国石油大学（华东)地球信息学院，山东东营 257062

万丛礼(1966-)，男，吉林抚松人，博士后，研究员，主要从事油气地质勘探及开发工作.

收稿日期: 2011-09-08

修回日期: 2011-10-18

网络出版日期: 2011-12-10

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Magma Intrusion and Its Effects on Enrichment of Shale Gas in Fault Subsidence Basin

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1.Petroleum Collecting and Transporting Factory of Shengli Oil Field,Dongying 257000,China;
2.Institute of Geological Sciences of Shengli Oil Field,Dongying 257000,China;
3.Earth Resource and Information Institute of Chinese Petroleum University,Dongying 257062,China.

Received date: 2011-09-08

Revised date: 2011-10-18

Online published: 2011-12-10

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摘要

断陷盆地岩浆活动强烈,火成岩分布很不均衡，并会侵入到泥页岩之中。通过地球化学分析发现，岩浆侵入显著促进其周围泥页岩热演化及页岩气生成；岩心观察证实，岩浆侵入过程中还使泥页岩产生大量裂缝。测井分析表明，侵入岩附近目前存在异常高压,它能够显著提高泥页岩对天然气的吸附量。综合分析认为,断陷盆地侵入岩周围页岩气成藏条件优越，是有利的富集区。

关键词： 断陷盆地; 岩浆侵入; 页岩气生成; 裂缝

本文引用格式

万丛礼,李钜源,金强,赵勇,杨志伟 . 断陷盆地岩浆侵入对页岩气的富集作用[J]. 天然气地球科学, 2011 , 22(6) : 1088 -1092 . DOI: 10.11764/j.issn.1672-1926.2011.06.1088

Abstract

There existed intense magma activities in fault basin,and the distribution of igneous rocks were very disequilibrium,some of them intruded into mudstones.The intrusive rocks were found greatly promoting the maturity of mud stones and the generation of shale gas by the way of geochemistry analysis.At the same time,the result of rock core observation showed that they made the mudstones produce a lot of fissures.Otherwise,the abnormal high-pressure around the intrusive rocks was found by the logging,which increased the shale stones′ absorption of the gas.These strongly suggested that mud stones around the intrusion rocks were considered to be favorable gathering areas of the shale gas in fault basin.

Key words： Fault subsidence basin; Magma intrusion; Shale gas; Fissure.

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