The First Set Of 140MPa Large-diameter Check Valve in China Came Out

As of February 16, the first domestic set of 140 MPa large-diameter check valves independently developed by my country has completed 4 wells and 70 stages of fracturing operations in the Sichuan-Chongqing area, and the cumulative use time has been 204 hours. Good user experience. The check valve is an important part of the high-pressure pipeline and an essential part in large-scale fracturing construction. It plays a role in preventing fluid backflow in the well and protecting other equipment from normal operation. It is widely used in fracturing stimulation operations. As shale gas is further developed into deeper formations, the pressure on the check valve increases.

To this end, the manufacturer relies on the high-pressure manifold product testing and testing platform to carry out technical research on the product structure, sealing method, and manufacturing process of the check valve, and strives to develop a 140 MPa large-diameter check valve to meet the requirements of large-diameter full-flange fracturing pipes. Sink 140 Pa construction pressure requirements.

The large-diameter check valve adopts a top-entry structure, which can realize online maintenance and is convenient for installation and maintenance; the key parts are surfacing, and the valve body is resistant to erosion and has a long service life; the valve plate is fully covered with rubber vulcanization process, which greatly improves the Sealing performance and service life, strong anti-sand-carrying liquid erosion ability, reliable back pressure sealing, limit displacement can reach 27 cubic meters per minute, providing strong support for the safe and efficient development of unconventional energy.