论文部分内容阅读
小洼油田是蒸汽吞吐开采的稠油油藏,1991年投入开发,随着开采时间的延长,地层亏空严重,地层压力逐年下降,地层出砂严重。在小井眼油井冲砂检泵作业中,存在洗井液漏失地层或洗井液返不出的问题,造成作业冲砂困难,又损害了油层。本文通过开展小井眼井筒内捞砂技术研究与应用,有效的解决了井内有防砂筛管和侧钻井的小井眼井筒内清砂的技术难题,并取得了显著的经济效益和社会效益。
Xiaowa Oilfield is a heavy oil reservoir exploited by steam stimulation. Since it was put into exploitation in 1991, with the prolonging of mining time, the strata have a serious deficit, the pressure of formation decreases year by year, and the formation of sand is serious. In the operation of sand well inspection pump for slim hole wells, there is a problem that the well or the washout fluid can not be recovered due to the lost circulation of the wash fluid, which makes the operation difficult to flush sand and damages the oil layer. In this paper, the research and application of the sand-filling technology in the wellbore is carried out, which effectively solves the technical problems of sand-cleaning in the wellbore of the wellbore with the sand control screen tube and the lateral drilling well, and has achieved significant economic and social benefits.