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Developing a new technique for the simultaneous optimization of both segmented time and injection rate for water flooding reservoirs: An analysis of Shengli Oilfield XIN-42 reservoir block
Energy Exploration & Exploitation ( IF 2.7 ) Pub Date : 2020-05-14 , DOI: 10.1177/0144598720925557
Yinfei Ma 1 , Anfeng Shi 1 , Xiaohong Wang 1 , Baoguo Tan 2 , Hongxia Sun 2
Affiliation  

The adjustment and control of the water injection rate is a commonly used method for increasing the cumulative oil production of waterflooded reservoirs. This article studies the production optimization problem under the condition of a fixed total water injection rate. The production process is divided into several segments. Considering the correlation between the segment’s time intervals and the well’s injection rate distribution, a simultaneous optimization of both segmented time and injection rate is proposed for enhancing net present value. Both empirical simulations and field application demonstrate that the suggested methods produce the highest increase in net present value – of approximately 13% and 10%, respectively – and significantly improve water flooding efficiency compared to other conventional schemes, such as segmented oil production optimization, cumulative oil production optimization and Bang-Bang control. The proposed methods under a 2-segment division increase oil production efficiency and greatly reduce adjustment costs.

中文翻译:

开发水驱油藏分段时间和注入速度同步优化新技术——以胜利油田XIN-42油藏区块为例

注水速度的调节和控制是提高水驱油藏累计产油量的常用方法。本文研究了固定总注水量条件下的生产优化问题。生产过程分为几个部分。考虑到分段时间间隔与井的注入率分布之间的相关性,提出了同时优化分段时间和注入率以提高净现值。经验模拟和现场应用都表明,与其他常规方案相比,所建议的方法产生的净现值增幅最大——分别约为 13% 和 10%——并显着提高了注水效率,如分段采油优化、累计采油优化和棒棒控制。2段划分下的拟议方法提高了石油生产效率并大大降低了调整成本。
更新日期:2020-05-14
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