抽油机机械变速装置在斜直井上的节能应用

Energy-saving Application of Mechanical Variable Speed Device of Pumping Unit in Inclined Vertical Well

鉴于油田开发中后期地层的液体供应能力不足,生产压力差减小,抽油机的泵送效率降低,能耗高。通过在泵送单元上增加机械换挡装置来减小泵送冲程,从而达到使泵送单元的有效功率与电动机功率相匹配的目的。通过对100口斜直井的实际应用,该方法很好的解决了这一问题,通过对其中6口井数据跟踪采集,应用效果较好,全面推广开后,产生的经济效益非常大,每口井每年可节约89.38万元,每热采周期可以增油30t,目前该方法已经成熟地应用于斜直井上。

In view of the lack of liquid supply capacity in the middle and late stages of oilfield development, production pressure difference decreases, pumping efficiency of pumping units decreases,and energy consumption is high. It is suggested that the pump stroke can be reduced by adding mechanical shifting device to the pump unit, so as to match the effective power of the pump unit with the power of the motor. Through tracking and observing the practical application of100 inclined vertical wells, this method solves this problem well. The application effect is good.After comprehensive popularization,the economic benefit is very great. Each well can save 893,800 yuan per year and increase oil production by 30 tons per thermal recovery cycle. At present,this method has been applied to inclined vertical wells more mature.