苏里格大气田上古生界储层流体包裹体特征及天然气成藏意义

王康东, 李贤庆, 冯松宝, 孔龙玺, 许峰, 曹鸿亮

doi:10.11764/j.issn.1672-1926.2011.06.961

天然气地球科学 >

2011 , Vol. 22 >Issue 6: 961 - 968

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.06.961

天然气地质学

苏里格大气田上古生界储层流体包裹体特征及天然气成藏意义

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1.中国矿业大学煤炭资源与安全开采国家重点实验室, 北京 100083；
2.中国矿业大学地球科学与测绘工程学院，北京 100083；
3.安徽省勘查技术院，安徽合肥230031；
4.中国石油大学油气资源与探测国家重点实验室, 北京 102249

王康东(1986-)，男，安徽来安人，硕士研究生，主要从事储层流体包裹体分析与天然气成藏研究. E-mail:249998031@qq.com.

收稿日期: 2011-07-01

修回日期: 2011-08-30

网络出版日期: 2011-12-10

基金资助

国家油气科技重大专项(编号:2008ZX05007-03；2011ZX05007-02)；油气资源与探测国家重点实验室开放基金项目(编号:2009004)；中央高校基本科研业务费专项(编号:2010YM01)；煤炭资源与安全开采国家重点实验室自主科研课题(编号:SKLCRSM10B04)联合资助.

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Characteristics of Fluid Inclusions and Natural Gas Pool-forming Significance of the Upper Paleozoic Reservoirs in Sulige Gas Field

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1.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Beijing 100083,China;
2.College of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 100083,China;
3.Geological Exploration Technologies Institute of Anhui Province,Hefei 230031,China;
4.Key State Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China

Received date: 2011-07-01

Revised date: 2011-08-30

Online published: 2011-12-10

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摘要

油气储层流体包裹体包含着油气成藏时丰富的微观地质信息。采用LABHR2VIS LABRAM HR800 型显微激光拉曼光谱仪和LINKAM THMS 600型冷热台，对鄂尔多斯盆地苏里格大气田上古生界储层流体包裹体样品进行测试分析。结果表明，苏里格大气田上古生界储层流体包裹体分布有低饱和烃类包裹体、沥青质烃类包裹体、饱和烃包裹体、CH₄包裹体、CO₂包裹体和纯盐水包裹体6种类型，其中含CH₄包裹体、CO₂包裹体和含烃包裹体较为丰富，占到50%以上。通过对流体包裹体的激光拉曼分析和均一温度测试结果分析，反映苏里格大气田成藏时曾有丰富的不同成分组成的烃类流体充注，与烃类包裹体同期的盐水包裹体均一温度分布范围为100～180℃，主峰温度在140～150℃之间。依据包裹体均一温度的实测结果，结合沉积埋藏史和古地温史，推算出苏里格气田上古生界天然气主要充注成藏期为晚侏罗世—早白垩世(150～100Ma)。

关键词： 流体包裹体; 成藏期; 激光拉曼分析; 上古生界; 苏里格大气田

本文引用格式

王康东, 李贤庆, 冯松宝, 孔龙玺, 许峰, 曹鸿亮 . 苏里格大气田上古生界储层流体包裹体特征及天然气成藏意义[J]. 天然气地球科学, 2011 , 22(6) : 961 -968 . DOI: 10.11764/j.issn.1672-1926.2011.06.961

Abstract

Much microscopic geological information of oil and gas reservoirs can be obtained from the reservoir fluid inclusions.Fluid inclusion samples from the upper Paleozoic of the Sulige large gas field were tested and analyzed in this paper using the LABHR2VIS LABRAM HR800 laser Raman spectrometer and LINKAM THMS 600 cool-heating instrument.The results showed that the fluid inclusions of the upper Paleozoic Sulige large gas field included six types of the low saturated hydrocarbon inclusion,asphaltic hydrocarbon inclusion,highly saturated hydrocarbon inclusion,the CH₄-rich inclusion,the CO₂ inclusion and aqueous inclusion.The CH₄-rich inclusion,the CO₂inclusion and the hydrocarbon-bearing inclusion were the main types of these fluid inclusions,which were more than 50%.The data of the fluid inclusions measured by homogenization temperatures and analysed by laser Raman showed that rich hydrocarbon fluids of different components were charged in the Sulige large gas field at gas accumulation period.The homogenization temperatures of aqueous inclusions coexisted with hydrocarbon inclusions were ranged from 100℃ to 180℃,and the main peak temperature was 140-150℃.According to the measured homogenization temperatures of fluid inclusions and combined with the burial evolution and paleo-temperature history,the result suggested that the main gas accumulation period of the upper Paleozoic reservoirs in the Sulige large gas field was occurred at the late Jurassic and early Cretaceous (150-100Ma).

Key words： Fluid inclusion; Poo-forming period; Laser Raman analysis; The upper Paleozoic; Sulige large gas field.

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