Flapper valves is a new product independently developed by our company;which is suitable for various completion technologies;Its leak-proof effect;The tool stru…

The installation of chemical injection systems in production wells allows various chemicals to be injected directly into the well stream. Chemical treatment may…

The annulus air release valve is installed on top of the hydraulic packer and is a device for controlling the flow of annular gas in the tubing and casing. The …

The ST-2 on-off tool is tubing string releasing, retrieving tool which can provides both left-handed rotation releasing and right-handed rotation releasing. Ins…

The gas release valve is installed on top of the hydraulic retrievable packer and connected with thread. The gas release valve is hydraulically controlled, non-…

The Expansion Joint is a key accessory of downhole string which is used to compensate the string length that caused by internal and external pressure or tempera…

This Hydro Trip Sub can be used for classification in pipe string, opening step by step. After the Hydro Trip Sub is opened, there is no falling object at the b…

The Hydraulic anchors is an anchoring device that can be expanded and retracted by hydraulic pressure. It is mainly used to anchor pipe string in downhole opera…

The shear-out safety joint is a safety device during well completion. In the event of an emergency or as required by the construction design, the top and bottom…