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页岩含气量定量计算方法探讨——以吐哈盆地温吉桑地区中下侏罗统为例

陈金龙，黄志龙，高潇玉，刘国恒，陈常超，吕昕鹏，陈晨   

  1. 中国石油大学油气资源与探测国家重点实验室，北京 102249
  • 收稿日期:2015-05-29 修回日期:2015-07-04 出版日期:2016-04-10 发布日期:2016-04-10
  • 通讯作者: 黄志龙(1962-)，男，浙江诸暨人，教授，博士生导师，主要从事油气成藏及资源评价研究. E-mail:huang5288@163.com
  • 作者简介:陈金龙(1988-)，男，安徽淮北人，硕士研究生，主要从事油气成藏及资源评价研究. E-mail:cjl2006_2007@163.com.
  • 基金资助:
    中国地质调查局油气资源调查中心项目“西北地区中生界页岩气资源调查评价”(编号：HX20140318);
    国家自然科学基金项目“湖相富有机质泥页岩自生石英形成及其页岩油地质意义”(编号：41272156)联合资助.

Quantitative calculation method of shale gas content:Example of Middle and Lower Jurassic,Wenjisang area,Tuha Basin

Chen Jin-long, Huang Zhi-long, Gao Xiao-yu, Liu Guo-heng, Chen Chang-chao, Lv Xin-peng, Chen Chen   

  1. State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China
  • Received:2015-05-29 Revised:2015-07-04 Online:2016-04-10 Published:2016-04-10

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摘要： 页岩气原地资源量定量计算对后续可动油气研究、经济性评价等起关键作用。通过对吐哈温吉桑地区中下侏罗统页岩含气性的研究，得到页岩现场解析总含气量为0.92～1.53m3/t；计算含气量平均为1.33m3/t，其中游离气约占47%、吸附气占49%、溶解气(包括水溶气及油溶气)占4%。研究认为，对应现场解析损失气的恢复，当损失时间较大时，直线恢复值比实际值小，多项式恢复值比实际值大，故使用直线、多项式恢复值的均方根值为损失量更合理。为了计算吸附气，引入吸附气饱和度(ε)概念，可以帮助理解吸附气在地质条件下的不饱和现象，使吸附气含量计算更符合地下实际。

关键词: 页岩气, 含气性, 定量计算, 损失气, 吸附气饱和度

Abstract: Quantitative calculation of shale gas in place (GIP) is a key aspect of the following mobility evaluation of gas,or economic evaluation.This paper studies the shale gas content,and reaches following conclusions. Desorption total gas content rank is 0.92-1.53m3/t; mean calculation value is 1.33m3/t,in which free gas accounts for 47%,adsorption gas of 49%,and solution gas of 4%.As for the lost gas correction,when the lost time is too long,linear correct value is lower than reality,meanwhile,polynomial correct value is higher.Consequently,this paper uses root mean square as the lost gas.As for theadsorption,this paper introduces the concept of “CH4 adsorption saturation”,which gives a profound idea of under- saturation in geological condition,and the calculation will be more accurate.

Key words: Shale, Gas content, Quantitative calculation, Lost gas estimation, CH4 adsorption saturation

中图分类号: 

  • P618.13

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