天然气地球化学

塔里木盆地东南地区若参1井天然气成因初探

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  • [1]中国石油天然气集团公司油气地球化学重点实验室; [2]中国石油塔里木油田勘探开发研究院;[2] 中海油田服务股份有限公司; [3]新疆库尔勒; [4]中国石油勘探开发研究院;
张斌(1978-),男,湖北长阳人,硕士,主要从事石油地质与地球化学研究.E-mail:zhangbin01@petrochina.com.cn.

收稿日期: 2006-02-17

  修回日期: 2006-06-15

  网络出版日期: 2006-08-20

ELEMENTARY RESEARCH OF NATURAL GAS ORIGIN IN RUOCAN 1 WELL, SOUTHEAST OF TARIM BASIN

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  • 1.Key Laboratory of Petroleum Geochemistry,CNPC,Beijing 100083,China;2.Research Institute of Petroleum Exploration and Development,CNPC,Beijing 100083,China;3.Research Institute of Petroleum Exploration and Development,Tarim Oilfield,CNPC,Korla 841000,China;4.China Oilfield Services Ltd,CNOOC,Beijing 101149,China

Received date: 2006-02-17

  Revised date: 2006-06-15

  Online published: 2006-08-20

摘要

露头资料显示,塔里木盆地东南地区东部瓦石峡凹陷发育有良好的侏罗系烃源岩。通过对若参1井岩石和气体样品进行有机地球化学分析,研究了天然气的成因和烃源岩发育情况,发现该区天然气主要来自于侏罗系煤系烃源岩,其甲烷含量非常高,属典型干气,乙烷碳同位素较重,指示其为陆相成因。指出该区烃源岩成熟度普遍较低,而甲烷碳同位素反映出来的天然气成熟度却很高,认为造成这种现象的主要原因一方面是天然气可能来源于凹陷中心成熟度相对较高的烃源岩,另一方面可能存在局部热事件。

本文引用格式

张斌;肖中尧;吴英;卢玉红;李明和;刘永福; . 塔里木盆地东南地区若参1井天然气成因初探[J]. 天然气地球科学, 2006 , 17(4) : 586 -589 . DOI: 10.11764/j.issn.1672-1926.2006.04.586

Abstract

According to outcrop data,the Jurassic source rocks were developed wide in Washixia depression,southeast of Tarim basin,and Ruocan 1 Well was one of the most important exploration wells in this area.By geochemical method,the nature gas origin was analysed and the source rocks in this area were evaluated on base of present data.The content of CH_4 in Well Ruocan 1 was fairly high,belonging to typical dry-gas;and isotope of C_2H_6 indicated its nonmarine origin,sourced from Jurassic coal-bearing rocks.

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