| Feasibility of Gas Drive in Fang-48 Fault Block Oil Reservoir |
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| 作者姓名： | Cui Lining Hou Jirui Yin Xiangwen |
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| 作者单位： | Cui Lining1，2，Hou Jirui1，2 and Yin Xiangwen1，2 (1. Key Laboratory of Petroleum Engineering under Ministry of Education，China University of Petroleum，Beijing 102249，China) (2. Enhanced Oil Recovery Center，China University of Petroleum，Beijing 102249，China) |
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| 摘 要： | The Fang-48 fault block oil reservoir is an extremely low permeability reservoir, and it is difficult to produce such a reservoir by waterflooding. Laboratory analysis of reservoir oil shows that the minimum miscibility pressure for CO2 drive in Fang-48 fault block oil reservoir is 29 MPa, lower than the formation fracture pressure of 34 MPa, so the displacement mechanism is miscible drive. The threshold pressure gradient for gas injection is less than that for waterflooding, and the recovery by gas drive is higher than waterflooding. Furthermore, the threshold pressure gradient for carbon dioxide injection is smaller than that for hydrocarbon gas, and the oil recovery by carbon dioxide drive is higher than that by hydrocarbon gas displacement, so carbon dioxide drive is recommended for the development of the Fang-48 fault block oil reservoir.
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| 关 键 词： | 断层石块 低渗透性储油池 气压驱动 实验室研究 数值模拟 |
| 收稿时间： | 24 July 2006 |
Feasibility of Gas Drive in Fang-48 Fault Block Oil Reservoir |
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| Cui Lining,Hou Jirui,Yin Xiangwen.Feasibility of Gas Drive in Fang-48 Fault Block Oil Reservoir[J].Petroleum Science,2007,4(3):51-56. |
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| Authors: | Cui Lining Hou Jirui and Yin Xiangwen |
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| Affiliation: | Key Laboratory of Petroleum Engineering under Ministry of Education, China University of Petroleum, Beijing 102249, China;Enhanced Oil Recovery Center, China University of Petroleum, Beijing 102249, China |
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| Abstract: | The Fang-48 fault block oil reservoir is an extremely low permeability reservoir, and it is difficult to produce such a reservoir by waterflooding. Laboratory analysis of reservoir oil shows that the minimum miscibility pressure for CO2 drive in Fang-48 fault block oil reservoir is 29 MPa, lower than the formation fracture pressure of 34 MPa, so the displacement mechanism is miscible drive. The threshold pressure gradient for gas injection is less than that for waterflooding, and the recovery by gas drive is higher than waterflooding. Furthermore, the threshold pressure gradient for carbon dioxide injection is smaller than that for hydrocarbon gas, and the oil recovery by carbon dioxide drive is higher than that by hydrocarbon gas displacement, so carbon dioxide drive is recommended for the development of the Fang-48 fault block oil reservoir. |
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| Keywords: | Low permeability reservoir gas drive feasibility laboratory analysis numerical simulation |
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