Wireline Grease Injection Control Head/ Stuffing Box

By injecting high-pressure high-viscosity sealing grease to accomplish the static and dynamic seal the cable wellhead.
A grease injection hole and a grease return hole, and there are several choke tubes are mounted in the main body. The quantity of choke tubes can be increased or decreased according to the pressure in well, more choke tubes will be used if the pressure in a well is high, and the quantity of choke tubes can be properly reduced if the pressure in a well is low.

The grease injection seal head contains stuffing box and linewiper. And the safety choke flow ball valve is designed on it, once the cable falling off or broken from the cable head accidentally, the safety choke flow ball valve can plug the cable hole to choked flow and seal wellhead automatically.