Double Poly Leakproof Plug of Downward Pressure-measuring Hole-Cement Mortar Timeshare Sealing Technique

There were the practical problems that mud and fluid discharged hardly, and it was difficult to guarantee the quality of hole sealing with drilling construction when downward pressure-measuring hole existed. On the basis of tradition method, an improvement scheme was put forward that increasing the drilling depth, fluid discharge by gas-lift method, double poly leakproof plug of twice timeshare hole sealing-cement mortar timeshare sealing technique. Then the scheme was applied in site and had achieved good effects.