KCSF31/2×23/8-5型双管封井器是为稠油水平井双管井口装置配套设计的修井作业辅助工具,用于封隔油套环空,防止井液外喷,有利于加强井场的环境保护,提高修井作业的安全性。该双管封井器适用于提下31/2×23/8规格的双油管柱的修井作业,额定工作压力5MPa。 KCSF31 / 2 × 23 / 8-5 double-tube blowout preventer is a well-matched workover aids designed for heavy oil horizontal well double-wellhead wellhead device, which is used to seal oil jacket annulus and prevent outflow of well fluid, which is beneficial to Enhancing the environmental protection in the wellsite and improving the workover work safety. The dual-tube shut-off device is suitable for workover work of a double tubing string with a size of 31/2 × 23/8 and a rated working pressure of 5MPa.