Lithologic Reservoirs ›› 2010, Vol. 22 ›› Issue (1): 53-58.doi: 10.3969/j.issn.1673-8926.2010.01.010

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Quantitative research of facies-potential controlled reservoir of glutenite fan: A case study from Li 85 block in northern slope zone of Dongying Sag

ZHANG Junjie1，YAN Changhui 1，2，CHEN Qing1，LIU Huimin3，WANG Yongshi3   

  1. 1. College of Energy Resources， Chengdu University of Technology， Chengdu 610059， China； 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation， Chengdu University of Technology， Chengdu 610059， China； 3. Research Institute of Geological Sciences， Shengli Oilfield Company， Sinopec， Dongying 257015， China
  • Online:2010-03-15 Published:2010-03-15

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Abstract:

According to the theory of facies-potential controlling on hydrocarbon accumulation in Dongying Sag, in combination with related research, the mechanismof facies-potential controlling on pool formation is analyzed. Based on previous studies, a quantitative research on facies and fluid potential recovery during the hydrocarbon accumulation period is carried out and the recovered palaeopressure in the inclusion is deemed as “residual pressure” which was formed after the filling process completed. In combination with the characteristics of staged filling process during the hydrocarbon accumulation period, interrelations of all kinds of energies are discussed. An analogical method is used to study the reservoir pore structure in the hydrocarbon accumulation period. Taking the linked well section among Li 92, Li 54, and Li 853 in Li 85 block as an example, the equation of oil saturation is formulated, the oil saturation of this section in each hydrocarbon accumulation phase is calculated, and it is concluded that the main filling process was in the third phase for Li-85 block.

Key words: waveform analysis, semi-quantitative prediction, self-organizing neural network, carbonate reservoir, Tazhong area

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