Eccentric lifting adjusting device for drill rod

By designing a drill rod eccentric lifting and adjustment device for drilling experiment simulation platform, the problem that drill rod cannot achieve eccentric lifting and adjustment in the wellbore in the prior art is solved, and precise adjustment of drill rod concentricity and improvement of wellbore cleaning are achieved.

CN222936696UActive Publication Date: 2025-06-03ZHEJIANG TENSING SCIENCE & TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421944866.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-12
Publication Date
2025-06-03
Estimated Expiration
2034-08-12

AI Technical Summary

Technical Problem

In the prior art, the drilling experiment simulation platform cannot realize the eccentric lifting and lowering adjustment of the drill rod in the wellbore, resulting in the drill rod being unable to maintain an ideal concentric state, affecting the wellbore cleaning and drilling production efficiency.

Method used

An eccentric lifting and adjustment device for drill rod is designed, including a driving motor, a rotary slot shaft, a T-shaped screw, a universal connection and an eccentric shaft collar. The eccentric adjustment of the drill rod is achieved through the transmission method of these components to ensure the concentric state of the drill rod in the wellbore.

Benefits of technology

Accurate adjustment of the concentricity of the drill rod is achieved, the wellbore cleaning and drilling production efficiency are improved, and premature wear of the drill bit and increased wellbore friction.

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Abstract

The utility model relates to the technical field of drilling equipment, in particular to a drill rod eccentric lifting adjusting device which comprises a driving motor, a rotary clamping groove shaft, a T-shaped lead screw, a universal connecting piece and an eccentric shaft collar. One end of the rotary clamping groove shaft is in transmission connection with the driving motor, and the other end is provided with an open clamping groove; one end of the T-shaped lead screw is connected with the clamping groove in a clamped mode, and the T-shaped lead screw can be driven by rotation of the rotary clamping groove shaft to achieve spiral lifting motion. One end of the universal connecting piece is universally and movably connected with the T-shaped screw rod, and the other end forms a lifting end; the eccentric shaft ring is correspondingly arranged on the periphery of the butt joint ends of the two drill rods in a sleeving mode, and a ring body is connected with the lifting end. When the T-shaped lead screw spirally ascends and descends, the eccentric shaft ring can be driven by the universal connecting piece to ascend and descend, so that the concentric state of the drill rod is adjusted. The drill rod eccentric lifting adjusting device can smoothly and stably achieve lifting motion of the eccentric shaft ring, the eccentric shaft ring is prevented from spinning, and the accurate adjusting effect on the concentricity of the two drill rods is fully guaranteed.
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