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How to determine whether the drill collar needs to be replaced
release time：2024-06-03
source： network
To determine whether the drill collar needs to be replaced, the following aspects can be referred to:
1. Usage duration:
·For general vertical wells, the entire set of drill pipes should be inspected for recovery every 2-3 months, and the drill collars should be inspected for up hole inspection or recovery inspection every 2-3 wells or about 400 hours.
·For deep wells, directional wells, special process wells, and horizontal wells, drilling collars should be considered for inspection or well replacement after 200 hours of use.
2. Construction situation:
·For general directional and horizontal wells, the frequency of replacing drill collars needs to be determined based on wellbore inclination and construction conditions. For example, drill pipes should be collected every 3-4 wells, or drill collars should be collected and inspected every 1-3 wells.
3. Drill collar performance and damage:
·If the drill collar shows significant performance degradation during the drilling process, such as severe wear and reduced impact performance, replacement should be considered.
·All drilling tools involved in accidents must be fully recovered, tested, and replaced to ensure safety.
4. Maintenance and Inspection:
·Regularly inspect the appearance and interior of the drill collar to see if there are cracks, wear, or other damages.
·Check if the interface and connecting parts of the drill collar are loose or damaged to ensure the reliability of the connection.
5. New technology applications:
·With the continuous development of technology, some new testing methods and equipment can be used to determine the performance and remaining life of drill collars, such as ultrasonic testing, magnetic particle testing, etc.
6. Market and Technology Trends:
·Pay attention to the development and technological innovation of the drill collar market, understand the application of new materials and the performance characteristics of new drill collars, in order to make more suitable choices when needed.
From the above points, it can be determined whether the drill collar needs to be replaced, taking into account various factors such as usage time, construction situation, drill collar performance and damage, maintenance and inspection situation, as well as market and technical trends. In practical operation, corresponding inspection and maintenance plans can be developed based on specific situations to ensure the safe and reliable use of drill collars.
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