Classification and use of Kelly float valve

Posted by zora li on June 12th, 2024

Classification and use of Kelly float valve

Classification of Kelly float valve

Depending on the different structural forms, Kelly float valves can be divided into the following categories:

1. Ball float valve: The ball float valve is the most basic and simplest float valve, usually consisting of a ball and a spring. The advantages are long service life and easy maintenance, but it is limited by the viscosity of the medium.

2. Ultra-thin float valve: The ultra-thin float valve is developed on the basis of the ball float valve. Compared with the ball float valve, its structure is more compact, smaller in size, and easy to install and use.

3. Kelly card float valve: The Kelly card float valve is a more popular float valve with the advantages of good sealing and long service life. Its structure includes ball valve body, spring, anti-tilt collar, collar, locking bolt, Kelly and other parts.

Use of Kelly float valve

1. When installing the Kelly float valve, pay attention to check whether the valve is damaged or defective, and ensure that the valve is in good condition.

2. When installing a Kelly float valve in a float valve well, the accumulated debris in the float valve well should be cleaned up first, and there should be no foreign matter in the pipe well.

3. After the Kelly float valve is installed, a filter should be installed above it to prevent debris from entering the pipeline and affecting normal use.

4. During the use of the Kelly float valve, it should be inspected and maintained at regular intervals, such as cleaning and replacing the sealing ring.

5. In well logging, it is often necessary to use a Kelly float valve to isolate pressure and enable the logging device to enter and exit the well. At this time, the operating procedures should be strictly followed to ensure safe use.

In short, the Kelly float valve is a common oilfield tool, and its function and classification are relatively obvious. When using the Kelly float valve, you must pay attention to safe operation and regularly inspect and maintain it to ensure its normal operation.