Drill Pipe Service Life Calculation and Maintenance Skills

Drill pipe is a steel pipe with a thread at the end, used to connect the surface equipment of the drilling rig to the drilling and grinding equipment or bottom hole device at the bottom of the drilling well. The purpose of the drill pipe is to transport drilling mud to the drill bit and to raise, lower or rotate the bottom hole device together with the drill bit. Drill pipe must be able to withstand tremendous internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, drill pipe can be used multiple times. Below, the OCTG casing pipe manufacturer will explain how to calculate the service life of drill pipes and maintenance techniques.

Calculation method of drill pipe service life:

The service life of drill pipe is related to its material, processing technology, usage environment and other factors. Generally, the service life of drill pipe can be calculated by the following two methods:
1. Calculate according to time
That is, the service life of the drill pipe is estimated based on the length of time the drill pipe is used. Typically, high-quality drill pipe will last anywhere from weeks to months, while lower-quality drill pipe may only last a few days.

2. Calculated according to the number of uses
That is, the service life of the drill pipe is calculated based on the number of times it is used. When used the same number of times, high-quality drill pipes have a longer service life.

Reasons for drill pipe breakage:

Drill pipe breakage refers to the accident where the drill pipe breaks during drilling operations. Drill pipe fracture is one of the most common accidents in drilling. It not only affects drilling operations, but may also cause serious casualties and equipment losses.

1. Fatigue fracture
Fatigue fracture is one of the main causes of drill pipe fracture, because the drill pipe needs to continuously withstand large tensile, bending and torsion forces for a long time during drilling operations. These forces will cause changes and damage to the material properties of the drill pipe, and ultimately Cause the drill pipe to break.

2. Material defects
There may be material defects in the drill pipe during the manufacturing process, resulting in insufficient strength of the drill pipe during use, and accidents of drill pipe breakage may easily occur.

3. Excessive wear and tear
Drill pipe needs to excavate the well wall for a long time during drilling operations, which will cause excessive wear on the surface of the drill pipe and accelerate fatigue and fracture of the drill pipe.

4. Improper operation
During drilling operations, improper operation may cause the drill pipe to twist, side load and other abnormal conditions, which may further cause the drill pipe to break.

Drill pipe maintenance tips:

Correct maintenance can extend the service life of drill pipe and reduce drilling costs. Here are some common maintenance tips:
1. Clean before use
The drill pipe should be carefully cleaned before use to ensure that its surface is clean and free of debris to avoid wear and tear on the drill pipe by foreign substances.

2. Conduct regular inspections
Conduct regular inspections on the drill pipe surface and joints, and promptly replace or repair problems if found.

3. Avoid high-intensity impact
During use, avoid high-intensity impact or distortion to avoid damage to the drill pipe.

4. Avoid excessive wear and tear
Avoid excessive wear and replace worn parts in time to avoid affecting the overall life of the drill pipe.

Effective methods to extend drill pipe life:

The life of drill pipe can be effectively extended by the following methods:
1. Choose high-quality drill pipe
Choosing good quality and durable drill pipe can effectively extend the service life of the drill pipe and reduce drilling costs.

2. Choose the right way to use it
Choosing the correct usage method, such as controlling the rotation speed and avoiding excessive impact, can reduce drill pipe wear and extend service life.

3. Regular maintenance
Regular maintenance can detect problems with the drill pipe in time and replace or repair them in time to avoid worsening of the problem and affecting the service life of the drill pipe.

Conclusion:

Drill pipe is the core component of drilling equipment, and its service life is directly related to the efficiency and cost of drilling. In drilling operations, correct maintenance and usage can effectively extend the service life of drill pipes and reduce drilling costs.

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