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Fracture cavity network model for fracture cavity carbonate reservoir |
ZHENG Song qing1,2, LI Yang1,3, ZHANG Hong fang2
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(1.College of Petroleum Engineering in China University of Petroleum, Dongying 257061, China;2.Petroleum Exploration and Production Institute, SINOPEC, Beijing 100191, China;3.Department of Oilfield Exploration and Development, SINOPEC, Beijing 100029, China)
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Abstract: |
In fracture cavity carbonate reservoir, cavity is the most important storage space and fracture is the main flow path, and the flow resistance of fracture is different from that of cavity. A fracture cavity network model was proposed according to discrete media characteristics of fracture cavity reservoir. And an oil water two phase flow model was established. The methods of stochastic modeling and history matching were combined to simulate the production performance of TK472CH single well fracture cavity unit. The results show that the fitting errors of oil production rate and water cut are 5.58 t·d1 and 12.31% respectively, which are in the acceptable fitting error range. Compared with the coupled model, the reservoir description parameters are simplified and computation cost decreases, so this model could be applied to large scale engineering project. |
Key words: fracture cavity reservoir network model discrete media fluid flow |
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