液力平衡式增压泵的故障原因分析及工艺设计改进建议

Failure Cause Analysis and Process Design Improvement Suggestions of Hydraulic Balance Booster Pump

增压注水是大庆外围油田提高注水系统效率的有效措施之一,但是在实际生产过程中,存在机泵设计能力与应用工况差别大、设备故障率高的问题,严重影响了增压工艺的使用效果。目前大庆外围油田在用的增压设备以液力平衡式增压泵为主,通过计算增压泵的平衡率和内部部件的受力情况,从压力平衡的角度分析机泵的故障原因,提出了分工况设计的建议,以弥补开发预测的不确定性和机泵应用工况的局限性所引起的设备故障率高的缺陷,从而延长增压泵的使用寿命,降低设备的维修费用,保证机泵的高效合理化应用,为注水系统的优化运行提供了保障。

Boosting pressure for water injection is one of the effective measures to improve the efficiency of water injection system in peripheral oilfield. However, in the actual production process, there are problems such as big difference between pump design capacity and application conditions and high fault ratio of equipment, which have great impact on the application effect of booster technology. The hydraulic balance booster pump is the main booster equipment in peripheral oilfields of Daqing at present. Therefore, the reasons of the equipment failure are analyzed from the point of pressure balance by calculating the balance rate of the booster pump and the stress condition of the internal parts, and the suggestion of design according to different working conditions is put forward to make up for the high failure rate because of the uncertainty of development prediction and the limitation of working conditions of the pump. By doing so,the service life of the pump can be prolonged,the cost of equipment maintenance can be reduced, the efficient and rational use of the pump can be ensured, and the optimal operation of the water injection system can be guaranteed.