西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (2): 31-34.

• 地质勘探 • Previous Articles     Next Articles

OIL-SOURCE CORRELATION AND OIL CHARGE HISTORY OF SHAHEJIE FORMATION IN WENDONG AREA

ZHANG Qing-feng1 PAN Zhong-liang1 LUO Xiao-ping1 CHANG Zhen-heng2   

  1. 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Chengdu University of Technology，Chengdu Sichuan 610059，China；2.Research Institute of Petroleum Exploration and Development，Zhongyuan Oilfield Company，SINOPEC，Puyang Henan 457001，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

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Abstract:

By analysis of saturated hydrocarbon GC-MS of crude oil，oil sand and shale samples from member 2 and 3 of Xujiahe formation，in Wendong area，it is suggested that in the study area，hydrocarbons are derived from the source rocks of member 3 of Shahejie formation.In order to further determine the oil accumulation phases of member 2 and 3 of Shahejie formation，fluid inclusions in reservoir rock also are studied，combined with information on tectonic evolution，the results show that the main accumulation period of member 2 of Shahejie formation was the late period of Dongying formation deposition and the period of its uplift-erosion，which was about 30Ma~17Ma，and that there are two phases of oil and gas filling for member 3 of Shahejie formation.The first phase，which is the main accumulation period was in the early Dongying formation deposition (33Ma~23Ma ago)，the second phase took place after Minghuazhen formation deposition (10Ma~0Ma ago).Finally，based on the analysis of accumulation model，the reservoirs in the area are divided into three types，i.e.，sag-near primary oil type，source and fault-controlled adjusted oil type and shallow second oil type.

Key words: Wendong area, saline lacustrine facies, geochemical characteristic, fluid inclusion, oil-gas accumulation phase 