丛式井一机双采抽油设备研究

Research on two oil wells driven by one pumping equipment for the cluster well

随着大庆外围油田开发的不断深入,受限于地理条件和投资成本,丛式井布井方式逐年多样化。丛式井一般采用游梁式抽油机,存在能耗高、效率低等问题。为减少丛式井生产中的能耗,降低一次性投资,开展丛式井一机双采工艺技术研究。采取控制系统驱动电动机运行,通过组合减速传动使抽油机的动力源和终端负载作换向运动,拖动抽油杆上下反复运行,2口井的抽油杆柱之间形成天平式的自平衡,相互不断地交换储存和释放势能的过程,实现了运行时的平衡,达到1台抽油设备同时抽汲2口油井目的。与游梁式抽油机相比,平均单井可减少投资6.8万元,综合节电率可达50%左右。一机双采设备可以有效降低油田开发成本,具有较好的节能效果。

With developing of Daqing peripheral oilfields,restricted by geographical conditions and cost of investments,the cluster well arrangement is diversified year by year.The beam-pumping unit is generally used in cluster well,which has a higher energy-consumption and lower efficiency.In order to reduce the energy-consumption of a cluster well during producing and one-time investment,the research on the energy-saving oil pumping with one-motor-driving-two-oil-wells has been carried out.The control system can be used to drive the motor running in this equipment,a combination of deceleration can be used to drive the pumping unit power and load for reversing motion.It drags a sucker rod to run repeatedly.The self balance can be formed between the sucker rods of two wells,the potential energy for storage and release can be exchange and the balance during running can be realized.Finally the target of two oil wells driven by one oil pumping unit can be reached.Comparing with beam-pumping unit,68 thousand Yuan of investment for one well can be reduced and the average combined electrical saving rate is about 50%.The cost for oilfield development can be reduced and the better energy-saving effect can be obtained by using this technology.