一种新型油管试压装置的研制与应用

为满足高压挤注作业过程中对油管密封性能的要求,研制出一种新型油管试压装置。该装置由滑套开关、侧壁通道、球座、弹簧等组成,其工作原理是先投入?28 mm球到底部球座实现油管试压,再投入?45 mm球到上部球座,在工作压力下打开侧壁通道,进行高压挤注施工作业。研制的新型油管试压装置下一趟管柱可以实现以前油管试压、高压挤注2趟工序,现场操作简单,施工前油管可以试压至允许范围内的任意高压,打开通道后管柱达到了耐长时间高压挤注的施工要求,最大程度地保证了高压作业中管柱的密封性能。

Development and application of a new type of tubing pressure test apparatus

To meet the sealing requirement of high pressure squeezing operations,a new type of tubing pressure test apparatus was developed. This apparatus was composed of sliding sleeve switch,sidewall channel,ballseat and spring.A ball with 28 mm diameter was firstly cast to the bottom of the ballseat to carry out tubing pressure test,and then a 45mm ball was cast to the top of the ballseat.The sidewall channel was opened at the working pressure to conduct high pressure squeezing operation.The new apparatus could accomplish the pressure test with one testing string.The field operation with this apparatus was quite convenient,and pressure test could be conducted with the tubing before the operation,and the pressure could be increased to any allowable scope.The string can meet the requirement of long-term squeezing operation.