| 摘要: |
| 碳酸盐岩缝洞型油藏储层中,溶洞是主要的储集空间,裂缝是流体流动的主要通道,二者内部流动阻力差异很大。针对缝洞型储层呈离散介质的特征,提出缝洞网络模型,并在此基础上建立油水两相流数学模型。采用随机建模和历史拟合相结合的方法对TK472CH单井缝洞单元的生产特征进行模拟。结果表明:产油量的拟合误差为5.58 t·d-1,含水率的拟合误差为12.31％,均在误差许可范围内,验证了模型的合理性;与耦合型数学模型相比,该模型简化了缝洞型油藏的表征参数,计算成本低,可进行大规模的工程应用。 |
| 关键词: 缝洞型油藏 网络模型 离散介质 流体流动 |
| DOI：10.3969/j.issn.1673-5005.2010.03.015 |
| 分类号::TE 344 |
| 文献标识码:A |
| 基金项目:国家“973”重点基础研究计划项目(2006CB202400) |
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| Fracture cavity network model for fracture cavity carbonate reservoir |
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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 |
