Structure of Kelly drill pipe
Kelly drill pipe is made up of multiple tools of the same or different lengths, usually consisting of two lengths of tools. One end of each tool is a fixed-size thread, and the other end is a round joint for connecting the next tool.
The main part of the Kelly drill pipe is composed of multiple threaded tools connected by special joints. When the joints are in contact, the special slots provide good tightness between the two. In this way, when drilling, the Kelly drill pipe can withstand the transmission of the entire weight and torque of the drill string.
Types of Kelly drill pipe
There are two main types of Kelly drill pipe: same-type Kelly drill pipe and special-shaped Kelly drill pipe. Same-type Kelly is made up of tools of the same color and the same length, while special-shaped Kelly drill pipe is made up of tools of different colors and different lengths.
The advantages of same-type Kelly are easy use and simple installation, while special-shaped Kelly drill pipe is suitable for more complex and difficult-to-drill wellheads.
Uses of Kelly drill pipe
Kelly drill pipe plays a very important role in drilling operations. Its main functions include:
1. Bear the entire weight of the drill string: During the drilling operation, the Kelly drill pipe transfers the weight of the drill string to the drill bit under the wellhead.
2. Transmit torque: Kelly drill pipe also bears the task of transmitting torque during the drilling process.
3. Assist hole cleaning: Kelly drill pipe can also be used with a hole cleaner to remove well wall attachments in operations such as Mary Well to improve drilling efficiency.
Maintenance methods of Kelly drill pipe
In order to ensure that the Kelly drill pipe has stable force and torque transmission capabilities during drilling operations, the Kelly drill pipe needs to undergo some maintenance work, including:
1. Check the Kelly drill pipe regularly and record the number of times it is used.
2. When wiping the Kelly drill pipe, a soft cloth should be used, and a brush or metal brush should not be used.
3. When using a drill pipe reel, the spool of the Kelly drill pipe should be kept in the center to prevent damage.
4. After each use, the rod should be cleaned and packed immediately and stored in a dry, ventilated place to prevent corrosion.
Through the introduction of this article, I believe that readers have a more comprehensive understanding of the structure, type, use and maintenance methods of the drill pipe. I hope this article can help readers improve their understanding of oilfield drilling operations.
Article source: https://article-realm.com/article/Business/65142-Kelly-drill-pipe-an-essential-tool-for-oilfield-drilling.html
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