Stainless steel sensor test cable

When the set pressure is reached, the downhole safety valve and the exhaust valve of the overwire packer are opened at the same time, and the oil and gas well can be normally produced. At the same time, the gas separated by the electric submersible pump can also be discharged from the annulus through the exhaust valve. In case of blowout or normal shut-in, the pressure of the control pipeline will be released, so that the downhole safety valve and the exhaust valve of the overwire packer will be closed at the same time. The oil and gas well tubing and annulus flow channels are all blocked, so as to ensure the safety of the well. Of course, the 1/4" hydraulic control line can also be used for downhole safety valve control alone. It can also be used for pressure control of surface safety valves and other surface valves, as well as various connecting pipelines of large equipment control systems for oil and gas field drilling and oil production.