Transfer type multi-arm caliper logging instrument

By combining a split-drive electric push rod with a compression spring, the multi-arm caliper logging tool achieves independent telescopic control and adaptive adjustment, solving the problems of mechanical structure complexity and wear in existing technologies, improving measurement accuracy and stability, and reducing maintenance costs.

CN223523716UActive Publication Date: 2025-11-07PANJIN ZONGHENG SHENGGUANG ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202520071117.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2025-11-07
Estimated Expiration
2035-01-13

AI Technical Summary

Technical Problem

Existing multi-arm logging tools require the measuring arms to be deployed or retracted simultaneously. Synchronous operation increases the complexity of the mechanical structure and the failure rate, resulting in poor stability, high maintenance costs, and wear caused by prolonged friction between the measuring arms and the well wall, affecting measurement accuracy and service life.

Method used

The device adopts a split-action design, which allows the probe arm to be independently extended and retracted through the cooperation of an electric push rod and a compression spring. The clamping wheel adaptively adjusts its position on the well wall to reduce wear, and the support structure of a servo motor and a two-way lead screw ensures stable operation of the equipment.

Benefits of technology

It improves the measurement accuracy and stability of the caliber logging tool, reduces maintenance costs, extends equipment lifespan, and adapts to complex well conditions.

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Abstract

The utility model discloses a transfer type multi-arm caliper logging instrument which comprises a shell, vertical holes are formed in the outer wall of the shell at equal intervals, a vertical pipe is fixedly connected to the interior of the shell, electric push rods are installed on the outer side of the vertical pipe at equal intervals, sliding rails are fixedly connected to the outer wall of the vertical pipe at equal intervals, and the sliding rails correspond to the vertical holes. A moving seat is slidably connected to the outer wall of the sliding rail, the output end of the electric push rod is in clearance fit with the moving seat, a compression spring is arranged in the moving seat, and the two ends of the compression spring abut against the electric push rod and the moving seat respectively. The utility model relates to the technical field of oil well logging, and solves the problems that in the prior art, measuring arms of a multi-arm hole diameter logging instrument need to be unfolded or folded simultaneously, the complexity and failure rate of a mechanical structure are increased due to synchronous operation, the stability is poor, the maintenance cost is correspondingly increased, the measuring arms are prone to abrasion due to long-time friction with a well wall, and the measurement precision is high. And the measurement precision and the service life of the equipment are influenced.
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