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How to effectively manage and utilize the drill string, as well as how to select an appropriate drill bit combination, is particularly crucial during the drilling process

release time：2026-04-15

source： network

The drill string consists of the kelly, drill pipe, drill collar, stabilizer, and various other accessories. Its functions include raising and lowering the drill bit, transmitting mechanical energy to the bit for rock fragmentation, applying drilling pressure at the bottom of the well, delivering drilling fluid into the well, and performing other downhole operations. In the event of an accident involving the drill string, certain economic losses may occur. Therefore, proper management, utilization, and selection of an appropriate drill string configuration are particularly crucial during the drilling process.

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The transition characteristics of heavy drill pipe from flexible drill pipe to rigid drill collar during drilling

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The transition characteristics of heavy drill pipe from flexible drill pipe to rigid drill collar during drilling

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