西南石油大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (4): 31-34.DOI: 10.3863/j.issn.1000-

• 地质勘探 • Previous Articles     Next Articles

FEATURE OF FLUID INCLUSIONS AND THE PERIOD OF PETROLEUM ACCUMULATION IN LINNAN SAG

ZHU Zhi-qiang1,2 ZENG Jian-hui1,2   

  1. 1.Basin and Reservoir Research Center,China University of Petroleum,Changping Beijing 102249,China;2.Key Laboratory for Hydrocarbon Accumulation Mechanism,Ministry of Education,China University of Petroleum,Changping Beijing 102249,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-08-20 Published:2008-08-20

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Abstract:

In order to determine the period of hydrocarbon accumulation in Linnan Sag，study on fluid inclusions of different structural parts is done systematically in this paper.The history of hydrocarbon migration and accumulation in Linnan sag is discussed based on the data of fluid inclusions，homogenization temperature，burial history，thermal history and hydrocarbon generation analyses.There are mainly 3 types of fluid inclusions in sandstone reservoirs in Linnan Sag，i.e.，aqueous inclusion，liquid hydrocarbon inclusion and gas hydrocarbon inclusion.The homogenization temperatures of the aqueous inclusions coexisting with organic inclusions are 105-125℃.It is supposed that in different structural parts in Linnan Sag there are different periods of hydrocarbon accumulation.Hydrocarbon accumulation in the center of Linnan Sag occurred in two stages.They were late Oligocene Dongying Period and Miocene Guantao Period to Pliocene Minghuazhen Period.The latter is the main accumulation period.Hydrocarbon accumulation on the edge of Linnan Sag occurred in Miocene Guantao to Pliocene Minghuazhen Period.

Key words: Linnan Sag, fluid inclusion, homogenization temperature, basin modeling, the period of petroleum accumulation, Bohai Bay Basin

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