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Series and Parallel Strategies of Combined Heating, Power and Oil Recovery for Oilfields in High Water Cut Period
Mathematical Geosciences ( IF 2.6 ) Pub Date : 2019-05-02 , DOI: 10.1007/s11004-019-09805-9
Jian Liu , Tailu Li , Nan Meng , Zhu Jialing

The combination of geothermal power generation and process flow in high water cut oilfields has complementary advantages, which not only saves the high drilling cost of geo-plants, but also recovers a large amount of oil every year. In addition, petroleum-associated water at temperatures above 85 °C can also replace gathering and transportation of oil-fired boilers. The main purposes of this study are to identify the most suitable working fluid for the organic Rankine cycle subsystem and to find out the application scope of the series and parallel strategies. Therefore, taking exergetic efficiency as the objective function, a case study was conducted based on the series of strategies. Results show that the exergetic efficiency is an effective indicator for the working fluid selection, and R601a shows the highest exergetic efficiency for both strategies. Furthermore, the preheater significantly improves the exergetic efficiency and enlarges the applicable scope of the series strategy. Generally speaking, the combined heating, power generating and oil recovery system has many technical and economic advantages and can be utilized in engineering applications.

中文翻译:

高含水期油田采暖,发电,采油相结合的串并联策略

高含水油田的地热发电与工艺流程相结合具有互补的优势,不仅节省了地质设备的高昂钻井成本,而且每年可回收大量石油。此外,温度高于85°C的石油伴生水也可以代替燃油锅炉的收集和运输。这项研究的主要目的是确定最适合有机朗肯循环子系统的工作流体,并找出串联和并联策略的应用范围。因此,以运动效率为目标函数,基于一系列策略进行了案例研究。结果表明,高能效率是选择工作流体的有效指标,R601a在这两种策略中均显示出最高的精力充沛效率。此外,预热器显着提高了能源利用效率并扩大了串联策略的适用范围。一般而言,加热,发电和采油的组合系统具有许多技术和经济优势,可用于工程应用。
更新日期:2019-05-02
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