Capillary cable is composed of a submersible power cable and a continuous stainless steel composite pipe. Diluent chemicals are injected into oil and gas Wells through composite pipes to make heavy oil Wells easier to recover. The injection of descaling chemical agent can effectively remove the oil pipe scaling. Sensors can be connected to collect downhole temperature, pressure, liquid level and other well parameters; The valve can be connected to the downhole safety valve and the wireline packer vent valve, and controlled on and off by surface pressure.
