由构造抬升引起的水溶气脱溶成藏问题

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (3): 318-321.

由构造抬升引起的水溶气脱溶成藏问题

王青^1,2, 张枝焕¹

1.石油大学教育部石油天然气成藏机理重点实验室,北京 102249;
2.中国石油天然气勘探开发公司研究中心,北京 100083

收稿日期:2004-07-19 出版日期:2005-06-01 发布日期:2020-11-23
作者简介:王青(1976-),男,江苏六合人,硕士,油气地球化学,(Tel)010-62098224(E-mail)wangqing1976@vip.sina.com.
基金资助:
国家“973”项目, 煤层气成藏地球化学研究(2002CB211701)部分成果

On A ccumulation of Water- Soluble Gas Released from Formation Water Resulted from Tectonic Uplift

WANG Qing^1,2, ZHANG Zhi-huan¹

1. Key Laboratory of Hydrocarbon Accumulation Mechanism, Ministry of Education, University of Petroleum, Beijing, 102249, China;
2. Research Center, China Oil and Natural Gas Exploration and Development Corporation, CNPC, Beijing 100083, China

Received:2004-07-19 Online:2005-06-01 Published:2020-11-23

摘要/Abstract

摘要： 阐述了控制天然气在地层水中溶解度的地质因素 ,介绍了水溶气脱溶量的计算方法和天然气在地层水中溶解度的计算公式。通过对存在构造拍升造成水溶气脱溶转化成游离气现象的3个典型气藏实例(西西伯利亚盆地乌连戈伊气田、四川盆地威远气田和塔里木盆地克拉2气田)分析,讨论了游离气气藏中甲烷含量高的组分特征及其主要原因,总结了此类气藏成藏模式,提出了构造抬升造成水溶气脱溶成藏的4个主要控制因素。

关键词: 构造, 水溶性烃, 天然气组分, 脱气, 气藏

Abstract: This paper presents the geological factors controlling the natural gas solubility in the formation water, the methods used to calculate the solubility, and the quantity of natural gas released from fomation water due to tectonic uplift. Three cases , Urengoy gas-feld of West Siberian basin , Weiyuan gas feld of Sichuan basin and Kela-2 gas -field of Tarim basin, about water soluble gas being converted into free gas are analyzed. The composition characteristic of high content of methane in free gas reservoir and the main reasons are discussed. The accumulation models of water sduble gas in the three cases are summarized, and four contolling factors are provided.

Key words: tectonic uplif, water-soluble hydrocarbon, gas compos ition, degasification, natural gas reservoir

中图分类号:

TE112.12

王青, 张枝焕. 由构造抬升引起的水溶气脱溶成藏问题[J]. 新疆石油地质, 2005, 26(3): 318-321.

WANG Qing, ZHANG Zhi-huan. On A ccumulation of Water- Soluble Gas Released from Formation Water Resulted from Tectonic Uplift[J]. Xinjiang Petroleum Geology, 2005, 26(3): 318-321.

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