SVES Float Valve delivered to Oversea client

SVES delivered Float Valve to Oversea client

The main function of the drilling float valve is to prevent the flow of bottom hole liquid, ensure that the bit can drill down normally, and filter the sediment and other impurities at the bottom of the well to prevent it from entering the bit, so as to ensure the normal drilling operation. ‌ ‌

The working principle of drilling float valve is to adjust the opening and closing of the valve through buoyancy to maintain the balance of liquid inside and outside the pipe rod. The valve cover of the floating valve unit is fully opened when the cement mud is injected in the normal drilling. When a kick or uninjected cement slurry occurs, the valve cover closes according to the elastic force of the torsion spring to prevent a blowout in the drill.

‌ The performance of a drilling float valve depends on several factors ‌ :

‌ float valve opening pressure ‌ : indicates the minimum pressure that the float valve allows liquid to pass through. In special areas such as high-density mud drilling, it is necessary to adjust the opening pressure of the float valve to ensure the smooth flow of fluid.

‌ float valve closing pressure ‌ : indicates the liquid pressure when the float valve is closed. The higher the closing pressure, the more difficult it is to close the valve, which may lead to fluid leakage.

‌ floating valve characteristics ‌ : refers to the opening and closing characteristics of the floating valve under different pressure conditions, which directly affects the flow rate and work efficiency of the fluid.

‌ corrosion resistance ‌ : The drilling float valve should have good corrosion resistance and be able to work normally in acidic and alkaline environments.

Therefore, it is necessary to carefully check the function and performance of the drilling float valve before construction to ensure that it can meet the working requirements.