In the Shengnan Oilfield Binnan Oil Production Plant, Team 206 employees, Wei Weifeng, for some of the abandoned oil wells in the oilfield, long-term stop pumping wells, when the formation pressure rebounded, the situation of blowout accidents often occurred, and the casing sealer and ball opener were successfully developed.
The upper part of the device is connected with the threaded collar of the casing to play the role of pressure and sealing, and is inserted into the casing collar through a special wrench. The lower part is a one-way ball valve, which is connected with the upper part. The higher the pressure in the well, the better the check of the one-way valve. When the spray is released, it can be completed by the ball valve opener and the valve. When the pump pressure is higher than the casing pressure during the killing, the check valve is pressed open to perform the killing operation. The whole device is completely inside the casing, which acts as anti-theft and anti-spray. The use of the device can effectively prevent blowout, reduce large-area pollution, reduce the cost of green compensation, and prevent the occurrence of casing stealing oil and gas, and has great promotion value.
Bontai Diamond Tools Co., Ltd. , http://www.fjdiamondblades.com