Lithologic Reservoirs ›› 2012, Vol. 24 ›› Issue (3): 61-65.doi: 10.3969/j.issn.1673-8926.2012.03.012

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Hydrocarbon accumulation conditions of turbidite in the middle sub-member of the third member of Shahejie Formation in sub-depression belt of Dongying Sag

ZHANG Pengfei   

  1. Research Institute of Geological Sciences, Sinopec Shengli Oilfield Company, Dongying 257015, China
  • Online:2012-06-20 Published:2012-06-20

Abstract:

Turbidite reservoir is characterized by complex hydrocarbon accumulation rule and diverse oiliness. Based on the data of seismic, well logging, well drilling and well testing. The fundamental geologic features, combined with the hydrocarbon distribution rule and typical reservoir analysis were applied to study the main controlling factors of the accumulation of turbidite. The result shows that the hydrocarbon accumulation of turbidite in the middle submember of Es3 is controlled by the following three aspects: ① The development of effective reservoir basically controlled the oil layer distribution, and the reservoir with great thickness is the distributed area and enrichment area of oil layer; ②Oil and gas enrichment is controlled by structural setting and abnormal high pressure; ③Effective transporting condition of faults is the key for hydrocarbon accumulation of turbidite. Compared with separate lenticular turbidite sand body, turbidite sandstone which is communicated with source rock by fault is easily charged by oil. Finally, a comprehensive evaluation method for the turbidite in sub-depression belt is concluded.

Key words: fuzzy clustering analysis, seepage media, Huoshaoshan Oilfield

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