乌尔逊油田低产井出液规律及间抽制度的研究

Study on liquid-producing law and intermittent pumping system for low yield wells in Ulson oilfield

乌尔逊油田属于"三低"油田,其固有的油藏特点,决定了油井低产,水井低注。随着油井产量下降,地层供液能力与抽油机井生产参数不匹配的矛盾日渐突出,一些井出现间歇出油、供液不足的现象,这部分井采取全天开采势必造成能源的浪费,而且也影响井下抽油泵的使用寿命。采取间抽是改善这种井泵工作状况和降低油田能耗的有效措施。针对乌尔逊油田低产井参数不匹配的矛盾,开展了低产井出液规律及其合理间抽制度的研究,并按照上述方法采取措施后,提高了低渗透油田生产效益,节约了油田生产成本。

Ulson oilfield belongs to three-low oilfield. Based on inherent characteristics of oil reservoir, it is determined that the oil well is low yield and the water-injecting well is low-injecting. With declining of oil well production, the contradiction between the formation liquid-supplying capacity and production parameters of oil pumping well is more and more serious. Intermittent pumping and inadequate liquid-supplying have been found in some wells. If a full-day production will be taken in this part of wells, the energy waste can be caused and the life of oil pump can be affected. The working status of pump can be improved and energy-consumption for oilfield can be reduced by using intermittent pumping technology. According to low-yield parameters non-matching of Ulson oilfield, the research on liquid-producing law and reasonable intermittent pumping system has been conducted in low-yield well. The production benefits for low permeability oilfield can be increased and the production cost for oilfield can be saved by using this technology.