This product is mainly used in oil and gas wells under the safety valve and over the cable packer valve control. The upcoming 1/4 "hydraulic control pipeline connected to the downhole safety valve and valve, through the ground pressure to control the oil & gas safety valve and cable packer valve switch to set pressure, oil and gas when the downhole safety valve and cable packer valve will open at the same time, when oil and gas well can the normal production of gas and electric submersible pump isolated also can be discharged from the annulus through the discharge valve, if the blowout or normal shut, it will control the pipeline pressure release, this downhole safety valve and cable packer bleeder valve is closed at the same time, the circulation channel of oil and gas well tubing and annulus of all block, so you can ensure that the safety of oil well. Of course 1/4 "hydraulic control pipeline can also be used alone for downhole safety valve control. The utility model can also be used for the pressure control of the ground safety valve and other ground valves, and various connecting pipelines of the instrument control system of the large-scale equipment of oil and gas field drilling and oil production.
This product is also known as capillary. Mainly used for oil and gas under pressure to Mao Xiguan, temperature and pressure sensor (also called permanent downhole pressure gauge for general nitrogen pump) and oil and gas production of oil and gas pipe string together into the underground parts of several kilometers deep, then the 1/8 hydraulic control line (Mao Xiguan) from the temperature and pressure sensors are connected to a fluorescence screen display on the ground.