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Installation Location Of Drill Pipe Float Valve

Installation location of drill pipe float valve

Function of drill pipe float valve

Drill pipe float valve is a tool used to control the movement of liquid in the drill pipe. Its function is to transport drilling fluid from the downhole oil pipe to the drill pipe to form a liquid column. It can also prevent the downhole high-pressure gas from entering the well. The correct installation position of the drill pipe float valve can effectively protect the drilling equipment and avoid accidents.

Installation location of drill pipe float valve

1. Installed at the inlet

The drill pipe float valve should be installed at the inlet of the drill pipe to ensure that the liquid flows into the drill pipe. If the float valve is not installed properly, the liquid will not flow in correctly, thus affecting the progress of the drilling operation.

2. Installed at the outlet

The drill pipe float valve can also be installed at the outlet of the drill pipe to prevent the downhole high-pressure gas from entering the well, thereby protecting the drill pipe and other equipment. However, this installation method requires the use of double drill bits and hollow drill pipes.

3. Install inside the buffer

In some operations that require pressurization or decompression, the drill pipe float valve can be installed inside the buffer. When the drilling fluid pressure is too large or too small, the float valve can automatically open or close to ensure the normal flow of the drilling fluid.

Issues to pay attention to during installation

1. Choose a suitable float valve

When installing a drill pipe float valve, you should choose a float valve model suitable for the current drilling operation. You cannot choose the wrong one or mix them to avoid affecting the drilling operation.

2. Check the maintenance status

Before installing the drill pipe float valve, you should carefully check the maintenance status of the float valve to ensure that it is in good condition. If replacement or maintenance is required, it should be done before installation.

3. Installation angle and direction

When installing the drill pipe float valve, you should pay attention to the installation angle and direction of the float valve to ensure that the liquid can flow freely, and also avoid the float valve from getting stuck or silting.

Summary

The drill pipe float valve plays an important role in oilfield drilling operations, but the choice of installation location and installation method will also affect the progress of drilling operations. When installing the drill pipe float valve, attention should be paid to selecting the appropriate float valve model, checking the maintenance status, and installing it at the correct angle and direction to ensure smooth drilling operations.