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针对大庆油田老区已进入高含水和二、三次加密井调整开发阶段，基础井的产液量高、含水高，而二、三次加密调整井产液量低，含水低的特点，大庆石油管理局第五采油厂对单管环状流程“三不”集油工艺进行试验。实验表明：该工艺可充分利用高产液、高含水老井的热力和水力条件，辅助二、三次加密调整井集油，通过加原油流动改进剂，降低集输温度，实现了原油集输过程中的“不加热、不掺水、不热洗”的“三不”集油，节约了基建投资和运行成本，达到了节能降耗的目的。
In view of the fact that the old area of Daqing Oilfield has entered the stage of adjustment and development of high water-cut and second and third infill wells, the production volume of base well is high and the water content is high, while the second and third times of the well are characterized by low liquid production and low water content. The Daqing Petroleum Administration The fifth oil production plant on the single-loop process “three no” oil-gathering process for testing. Experiments show that the process can make full use of the thermodynamic and hydraulic conditions of the high production liquid and high water-containing old wells, and assist the second and third encryption adjustment wells to collect oil. By adding the crude oil flow improver and reducing the gathering temperature, the process achieves the process of crude oil gathering and transportation The “No-Three” oil-gathering, “not heating, no watering, no hot water washing”, saved capital investment and operating costs and achieved the purpose of saving energy and reducing consumption.