潜油隔膜泵举升工艺在G油田的应用  

Application of Submersible Diaphragm Pump Lifting Process in G Oilfield

作　　者：李长生[1] LI Changsheng(No.7 Production Plant of Daqing Oilfield Co.,Ltd)

机构地区：[1]大庆油田有限责任公司第七采油厂

出　　处：《石油石化节能》2019年第8期26-29,I0004,共5页Energy Conservation in Petroleum & PetroChemical Industry

摘　　要：为了解决G油田大斜度井应用游梁式抽油机有杆举升存在的杆管偏磨严重、泵挂深度浅、产能发挥不充分等问题,试验了潜油隔膜泵举升工艺。在直井上进行了先导试验,以评价其效果及适应性。试验中,开展了潜油隔膜泵举升工艺与游梁式抽油机举升工艺的能耗对比评价,潜油隔膜泵举升工艺清蜡点研究与洗井参数优化,潜油隔膜泵与矿场在用整筒泵的泵效率对比评价。潜油隔膜泵举升工艺较游梁式抽油机举升工艺节能45.78%,吨液举升能耗减少6.075kWh,系统效率高出12.88个百分点;潜油隔膜泵举升工艺的清蜡点为电动机上限电流的90%,合理洗井参数为热洗排量8m3/h、热洗时间3h;潜油隔膜泵的泵效率较整筒泵高出62.2个百分点。潜油隔膜泵举升工艺与游梁式抽油机举升工艺相比,节能效果显著,泵效率较高,故障率低,生产管理方便,优势初步显现。因试验时间较短,其整体应用效果需进一步跟踪评价。In order to solve the problems of serious eccentric wear of sucker rod and tubing and insufficient capacity of shallow pump hanging depth in the application of rod lifting of beam pumping unit in high inclined wells of G oilfield, the lifting technology of submersible diaphragm pump was tested. Pilot test is carried out in vertical wells to evaluate its effect and adaptability. In the test, the energy consumption of the lifting process of submersible diaphragm pump and that of the beam pumping unit was compared and evaluated,the wax removal point of the lifting process of submersible diaphragm pump and the optimization of the well washing parameters were carried out, and the efficiency of the submersible diaphragm pump and the whole barrel pump in the field was compared and evaluated. The lifting process of submersible diaphragm pump saves 45.78% energy than that of beam pumping unit, reduces 6.075 kWh/t energy consumption per ton of liquid, and increases system efficiency by 12.88 percentage points. The wax removal point of the lifting process of submersible diaphragm pump is 90% of the motor upper limit current, and the reasonable parameters of well washing are 8 m3/h of hot washing and 3 hours of hot washing. The efficiency is 62.2 percentage points higher than that of the whole barrel pump. Compared with the lifting technology of beam pumping unit, the lifting technology of submersible diaphragm pump has remarkable energy saving effect, higher pump efficiency, lower failure rate, convenient production and management,and preliminary advantages. Because of the short test time,its overall application effect needs to be further tracked and evaluated.

关 键 词：大斜度井 潜油隔膜泵 举升工艺 应用效果 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]