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中南大学学报(自然科学版)

Journal of Central South University

第47卷    第2期    总第258期    2016年2月

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文章编号:1672-7207(2016)02-0515-09
库车坳陷迪北气藏流体包裹体特征及油气充注历史
李峰1, 2, 3,姜振学1, 2,李卓1, 2,刘建良4,王赢5,罗枭6

(1. 中国石油大学(北京) 非常规天然气研究院,北京,102249;
2. 中国石油大学(北京) 油气资源与探测国家重点实验室,北京,102249;
3. 中海油研究总院,北京,100028;
4. 中国石油勘探开发研究院,北京,100083;
5. 山东省地震局,山东济南,250014;
6. 中国石油塔里木油田公司勘探开发研究院,新疆库尔勒,841000
)

摘 要: 利用流体包裹体岩相学观察、显微测温分析、红外光谱扫描、定量颗粒荧光分析、全荧光扫描的方法,探讨库车坳陷迪北气藏侏罗系储层油气充注历史。研究结果表明:迪北气藏侏罗系储层具有两期流体包裹体,第1期包裹体主要为淡黄色、浅黄色荧光气液烃包裹体,其成熟度相对较低,为吉迪克期到康村期(23~12 Ma)的原油充注事件,推测存在的古油藏即源自此期充注;第2期包裹体主要为蓝白色荧光气液烃包裹体,其成熟度相对较高,为库车期到现今(5~0 Ma)的天然气充注事件。总体上,迪北气藏具有“吉迪克期到康村期的原油充注、库车期的天然气充注、西域期以来的气藏调整改造再富集”的油气充注历史。

 

关键词: 库车坳陷;迪北气藏;流体包裹体;油气充注历史

Fluid inclusion characteristics and hydrocarbon charge history ofDibei gas reservoir in the Kuqa depression
LI Feng1, 2, 3, JIANG Zhenxue1, 2, LI Zhuo1,2, LIU Jianliang4, WANG Ying5, LUO Xiao6

1. Institute of Unconventional Natural Gas Research, China University of Petroleum, Beijing 102249, China;
2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
3. CONNC Research Institute, Beijing 100028, China;
4. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
5. Shandong Seismological Bureau, Jinan 250014, China;
6. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla 841000, China

Abstract:Hydrocarbon charge history of Jurassic reservoir of Dibei gas reservoir in the Kuqa depression was discussed by observation of fluid inclusion petrological characteristics, microthermometric analysis, infrared spectrum scanning, quantitative grain fluorescence analysis, and total scanning fluorescence. The results show that there are two episodes of hydrocarbon accumulation. Inclusions in the first phase are mainly gas-liquid inclusions with fluorescence colour of faint yellow and light yellow, which means that the maturity of the inclusion is relatively low. Hydrocarbon charging period in the first stage is from Jidike period to Kangcun period (23-12 Ma). Inclusions in the second phase are mainly gas-liquid inclusions with fluorescence colour of white blue, which means that the maturity of the inclusion is relatively high.Hydrocarbon charging period in the second stage is from Kuqa period to today (5-0 Ma). In general, the hydrocarbon charge history is verified. Firstly, the reservoir is charged with oil from Jidike period to Kangcun period. Then the reservoir is charged with the superposition of natural gas in Kuqa period. Finally, the reservoir is adjusted, modified and re-enriched in Xiyu period.

 

Key words: Kuqa depression; Dibei gas reservoir; fluid inclusion; hydrocarbon charge history

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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