| 裂缝性低渗透油藏弹性采收率计算新方法 |
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| 引用本文： | 张晓亮,张金庆. 裂缝性低渗透油藏弹性采收率计算新方法[J]. 新疆石油地质, 2011, 32(4): 409-411 |
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| 作者姓名： | 张晓亮 张金庆 |
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| 作者单位： | 中海石油研究总院开发研究院,北京 100027 |
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| 基金项目： | 国家重大科技专项(2008YXKJB-02) |
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| 摘 要： | 结合非达西渗流理论,提出了能够同时考虑方向性非均质以及基质中流体渗流存在启动压力梯度的裂缝性低渗透油藏弹性采收率计算新方法。结果表明,考虑非达西渗流后裂缝性低渗透油藏极限泄油范围内弹性采收率为常规方法计算值的1/3,并从考虑非达西渗流后弹性采油量下降以及低渗透油藏的开发实践两方面阐述了1/3 结果的合理性,同时证明与低渗透油藏开发实际相吻合。
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| 关 键 词： | 微裂缝 低渗透油藏 弹性采收率 启动压力梯度 |
| 收稿时间： | 2010-10-25 |
Calculation Method of Natural Depletion Oil Recovery for Micro-fractured Low Permeability Reservoirs |
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| ZHANG Xiao-liang,ZHANG Jin-qing. Calculation Method of Natural Depletion Oil Recovery for Micro-fractured Low Permeability Reservoirs[J]. Xinjiang Petroleum Geology, 2011, 32(4): 409-411 |
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| Authors: | ZHANG Xiao-liang ZHANG Jin-qing |
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| Affiliation: | CNOOC Research Institute, Beijing 100027, China |
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| Abstract: | The conventional depletion oil recovery calculation method based on Darcy equation has certain limitations to fractured low-perme-ability reservoirs due to the strong anisotropy caused by the natural micro-fracture and the threshold pressure gradient of the matrix.A new depletion oil recovery calculation method is proposed,which can take both the reservoir anisotropy and the non-Darcy flow in matrix into consideration.The study indicates that the natural depletion oil recovery of fractured low-permeability ... |
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| Keywords: | micro-fracture low-permeability reservoir natural depletion oil recovery threshold pressure gradient |
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