| 封闭油藏注水开发阶段注采比计算新方法 |
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| 引用本文： | 贾英兰,贾永禄,周霞,景洋,聂仁仕.封闭油藏注水开发阶段注采比计算新方法[J].西南石油大学学报（自然科学版）,2014,36(1):89-94. |
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| 作者姓名： | 贾英兰 贾永禄 周霞 景洋 聂仁仕 |
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| 作者单位： | 1.“油气藏地质及开发工程”国家重点实验室西南石油大学，四川成都610500
2. 中国石油青海油田分公司天然气处，甘肃敦煌736202
3. 中国石油西南油气田勘探开发研究院分析实验中心，四川成都610000
4. 中国石油川庆钻探工程有限公司，重庆江北400020 |
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| 基金项目： | 国家自然科学青年基金“缝洞性碳酸盐岩多段酸压水平井压力动态研究”(51304164);国家“973”计划项目“二氧化碳置换页岩气多尺度多场耦合渗流理论”(2014CB239205) |
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| 摘 要： | 目前的阶段注采比计算方法只考虑了地层压力或含水率等单个因素的影响，而实际开发中，注采比的大小受
油藏压力、含水率、累积水油比等多因素的影响。针对这一问题，利用累积注水量与累积产油量的半对数关系式，结合
封闭油藏物质平衡方程，推导了阶段注采比与累积产油量、地层压力和含水率的关系式。再利用累积产油量与含水饱
和度的关系式、两种不同相对渗透率与含水饱和度的关系式，推导了两种阶段注采比的计算关系式。最后，实例计算
结果表明：研究的计算方法可用于封闭油藏注水开发的阶段注采比计算与预测。
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| 关 键 词： | 封闭油藏 注水 阶段注采比 含水率 相对渗透率 |
New Calculation Methods of Injection-production Ratio for
Water-injecting Development Stage in Closed Reservoirs |
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| Jia Yinglan,Jia Yonglu,Zhou Xia,Jing Yang,Nie Renshi.New Calculation Methods of Injection-production Ratio for
Water-injecting Development Stage in Closed Reservoirs[J].Journal of Southwest Petroleum University(Seience & Technology Edition),2014,36(1):89-94. |
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| Authors: | Jia Yinglan Jia Yonglu Zhou Xia Jing Yang Nie Renshi |
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| Institution: | 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University，Chengdu，Sichuan 610500，China;
2. Natural Gas Bureau，Qinghai Oilfield Company Petrochina，Dunhuang，Gansu 736202，China;
3. Research Institute of Exploration and Development，Petrochina Southwest Oil & Gas Field Company，Chengdu，Sichuan 610000，China;
4. Chuanqing Drilling Engineering Co. Ltd.，CNPC，Jiangbei，Chongqing 400020，China |
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| Abstract: | At present，the calculation methods of stage injection-production ratio only considered a single factor，such as
formation pressure or water cut；however，the stage injection-production ratio is controlled by many factors，such as formation
pressure，water cut and cumulative water-oil production ratio in real development. To solve the problem，we derived the
relationship formulation of stage injection-production ratio with cumulative oil production，formation pressure and water cut
using the semi-logarithmical curve of cumulative water injection with cumulative oil production，combining the material balance
equation of closed reservoir. Then two calculation formulations of stage injection-production ratio were further derived using
the relationship formulation of cumulative oil production with water saturation and the two relationship formulations of relative
permeability with water saturation. At the end，calculations of stage injection-production ratio using the above two calculation
formulations for an example closed reservoir with water-injection development history showed that the new calculation methods
are applicable and useful. |
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| Keywords: | closed reservoir water injection stage injection-production ratio water cut relative permeability |
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