石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (5): 796-801,810.doi: 10.11743/ogg20120518

• 油气开发 • 上一篇    下一篇

水动力改变液流方向技术在低渗透油藏中的应用——以新疆宝浪油田宝北区块为例

李伟才1,2, 崔连训3, 赵蕊3   

  1. 1. 中国地质大学 资源学院, 湖北 武汉 430074;
    2. 中国地质大学 构造与油气资源教育部重点实验室, 湖北 武汉 430074;
    3. 中国石化 河南油田分公司 第二采油厂, 河南 南阳 473400
  • 收稿日期:2012-01-09 修回日期:2012-07-21 出版日期:2012-10-28 发布日期:2012-11-15
  • 第一作者简介:李伟才(1983-),男,博士研究生,油气田开发地质。
  • 基金项目:

    中国石化河南油田分公司重点项目(2007026216);中央高校基本科研业务费专项资金项目(CUGL100249)。

Using hydrodynamic force to change flow direction in low-permeability oil reservoirs——an example from the Baobei block in Baolang oilfield,Xinjiang

Li Weicai1,2, Cui Lianxun3, Zhao Rui3   

  1. 1. Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China;
    2. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China;
    3. No.2 Oil Production Plant, SINOPEC Henan Oilfield Company, Nanyang, Henan 473400, China
  • Received:2012-01-09 Revised:2012-07-21 Online:2012-10-28 Published:2012-11-15

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摘要：

针对低渗透油田水驱采收率低、水驱效果差、液流方向单一等问题,以新疆宝浪油田宝北区块为例,对水动力改变液流方向技术在低渗油藏中的应用进行了相关研究。首先从水动力改变液流原理出发,总结出调整注水井、调整采油井和采油井转注3种水动力改变液流的工作原理。其次,结合油田实际地质及生产情况,从注水井增补及开发层位调整方面,对油田52口生产井制订了改变液流方向的具体措施。最后,利用油藏数值模拟技术对上述措施进行了评价,预测措施实施后15年综合含水率上升6.36%,产油量增加26.51×104 t,日产油增加59.34 t/d。预测结果表明,水动力改变液流方向技术应用在宝北区块这样的高含水、低渗透油藏中能取得较好效果。该技术可有效抑制低渗透储层含水率上升,增加单井产量,提高储层水驱采收率。

关键词: 改变液流方向技术, 数值模拟, 水驱采收率, 低渗透油藏, 宝浪油田, 新疆

Abstract:

The development and production of low-permeability oil reservoirs have been staggered by problems such as low recovery factor and low efficiency of waterflooding,singular direction of fluid flow and etc.How to effectively develop this kind of reservoirs therefore has gained more and more attention around the world in recent years.The paper discussed a study on the application of a flow direction changing method with hydrodynamic force in the Baobei block of the Baolang oilfield in Xinjiang Autonomous region.The study suggests that there are three ways of changing flow direction with the hydrodynamic force:water injector adjustments,producer adjustment and conversion of producers to injectors.Based on practical geological and production data of the oilfield,the study offered practical measures for changing flow direction in 52 producers through infilling injectors and adjusting producing layers.An evaluation was also carried out by using reservoir numerical simulation model to check the effectiveness of these measures during the study.The model predicts increases in comprehensive water cut by 6.36%,oil production by 265,100 tons and daily oil output by 59.34 tons fifteen years after the measures being taken.Based on the prediction,the paper comes to the conclusion that the method can effectively impede water cut increasing,increase single production,and enhance waterflooding recovery factor in oil reservoirs with low permeability.

Key words: flow direction change method, numerical simulation, water-flooding recovery factor, low-permeability reservoir, Baolang oilfield, Xinjiang

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