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Fluid inclusion evidence for petroleum accumulation in northern Qaidam Basin

YANG Yunfeng LI Xianqing FENG Songbao WANG Kangdong KONG Longxi DONG Peng XU Feng PENG Dehua CHEN Yan

中国地球化学学报(英文版)2010,Vol.29Issue(4):422-430,9.
中国地球化学学报(英文版)2010,Vol.29Issue(4):422-430,9.DOI:10.1007/s11631-010-0475-1

Fluid inclusion evidence for petroleum accumulation in northern Qaidam Basin

Fluid inclusion evidence for petroleum accumulation in northern Qaidam Basin

YANG Yunfeng 1LI Xianqing 2FENG Songbao 3WANG Kangdong 1KONG Longxi 3DONG Peng 1XU Feng 2PENG Dehua 4CHEN Yan5

作者信息

  • 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. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China
  • 4. Research Institute of Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang 736202, China
  • 折叠

摘要

Abstract

Based on the results of fluid inclusion study (microscopic characteristics, homogenization temperatures and grains with oil inclusions), the pool-forming time of the Nanbaxian and Mabei 1 oilfields in northern Qaidam Basin was discussed in this paper. Fluid inclusions in northern Qaidam Basin are relatively abundant, including aqueous inclusions and hydrocarbon inclusions. These inclusions are small (5-10 μm), and mainly distributed in quartz fissures, overgrowths and cementations. The abundances of grains with oil inclusions (GOI) are commonly low. The GOI values of most samples are between 2.0%-10.5%, and those of about 40 percent of total samples exceed 5%. The homogenization temperatures of fluid inclusions in different samples are markedly dissimilar, indicating that these inclusions were formed in different periods. According to the measured homogenization temperatures of fluid inclusions and in combination with burial history and thermal evolution history, the Nanbaxian and Mabei 1 oilfields are deduced, which have experienced two hydrocarbon charging periods, with the former of N1-N21 and N22- N23, and the latter of N1 and N1 end - N2, respectively.

关键词

oil and gas reservoir/fluid inclusion/homogenization temperature/grain with oil inclusions (GOI)/hydrocarbon charging period/petroleum accumulation

Key words

oil and gas reservoir/fluid inclusion/homogenization temperature/grain with oil inclusions (GOI)/hydrocarbon charging period/petroleum accumulation

分类

天文与地球科学

引用本文复制引用

YANG Yunfeng,LI Xianqing,FENG Songbao,WANG Kangdong,KONG Longxi,DONG Peng,XU Feng,PENG Dehua,CHEN Yan..Fluid inclusion evidence for petroleum accumulation in northern Qaidam Basin[J].中国地球化学学报(英文版),2010,29(4):422-430,9.

基金项目

This work was jointly supported by the National Large-sized Oil and Gas fields Science and Technology Research Program (Grant No. 2008ZX05007-03), the National Natural Science Foundation of China (Grant No. 40572085), the New-century Excellent Talent Program of Ministry of Education (Grant No. NCET-06-0204), the Open Fund of State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum (Grant No. 2009004), and the Scientific Research Project of the Qinghai Oilfield Company (Grant No. QHKT/JL-03-013). (Grant No. 2008ZX05007-03)

中国地球化学学报(英文版)

2096-0956

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