温控短路热洗清蜡防漏管柱的研究及应用

介绍了克拉玛依油田在热洗清蜡中存在的问题,为解决这些问题,应用温控元件设计出温控短路热洗清蜡防漏管柱。通过室内和现场反复试验,可由一定温度的热洗液进行温控短路热洗,并可通过温控封隔器封住油套环形空间,防止热洗液污染油层。它比原热洗工艺节约热洗液用量30%~50%,热洗施工时间减少30%~50%,具有显著的经济效益和社会效益。

DEVELOPMENT AND APPLICATION OF TEMPERATURE-CONTROL SHORT-CIRCUIT TYPE THERMAL WELL-FLUSHING WAX-REMOVAL LEAK-RESISTANCE STRING

This paper gives an introduction on the problems existing in hot-water well -flushing wax -removal in Kelamayi Oilfield. In order to solve these problems,the temperature - control short - circuit type thermal well - flushing wax - removal leak - resistance string is developed by using of temperature-control components. Indoor and field testing results show that it realizes the temperature-control short-circuit well-flushing by fiushing fluid with certain temperature. The temperature-control packer is used to prevent flushing fluid from injuring oil formation by sealing the annulus between tubing and casing. Compared with conventional method,it can save 3O~5O percent of flushing fluid volume,and reduce by 30~50 percent of operating time.