低产井合理间抽制度的建立及效果评价

The Establishment and Effect Evaluation of Reasonable Intermittent Pumping System of Stripped Wells

随着油田不断开发,低液面、供液不足的油井逐渐增加,需要采取间抽生产的油井逐步增多,但是目前的间抽制度制定主要依靠现场经验采取统一的、固定的间抽制度,无法充分发挥油层生产潜力,对单井的适应性不强。为更科学地建立间抽制度,通过大量现场试验,对连续液面监测技术和不稳定试井技术两种确定间抽制度的方法,进行了对比分析;从技术适应性和现场操作方面,确定连续液面监测技术为最佳方法。通过现场试验的3口井看,平均单井日节电达到38.88 k Wh,节电率为44.7%,起到了较好的节能效果,可有效提高低产井生产效益。

With further development of the oilfield, wells with low fluid level and insufficiently feeding flow gradually increase, so intermittent pumping oil wells increase as well. But current intermittent pumping system establishment mainly depends on field experience, using uniform and fixed system, which cannot give full play to oil lay production potential and is not very suitable for the single well. In order to establish a more scientific intermittent pumping system, continuous liq-uid level monitoring technology and unsteady well testing technology are compared and analyzed by lots of field tests. The best way is continuous liquid level monitoring technology considering technology adaptability and site operation. From the data of 3 tested wells, the electricity saving amount of per well is 38.88 k Wh/d and the electricity saving rate is 44.7%. It has a good energysaving effect, which can effectively improve the efficiency of stripped well production.