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Function and Material of the Drilling Rod String

release time：2026-07-08

source： network

The main functions of the drill string are: 1. Transmitting weight on bit and torque to the drill bit; 2. Providing a channel for the circulation of drilling fluid; 3. Serving as a conduit for core retrieval.
The material of the drill string: Conventional drill pipes are made from seamless steel tubes with varying alloy compositions, and there are restrictions on harmful components such as phosphorus and sulfur, with the limit set at no more than 0.04%.

The Significance and Components of Drill String Assembly

Common basic drilling tool assembly—Tower-type drilling tool assembly

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The Significance and Components of Drill String Assembly

Common basic drilling tool assembly—Tower-type drilling tool assembly

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