Underground throttler fishing tool
CN222376441UActive Publication Date: 2025-01-21YANCHENG XINYUAN PETROCHEMICAL MASCH CO LTD
Patent Information
- Application Number
- CN202421283704.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-05
AI Technical Summary
Technical Problem
The downhole throttle is difficult to be effectively grasped by the steel wire salvage tool under sand output, scaling, corrosion, etc., resulting in a low salvage success rate and affecting the gas well output.
Method used
A downhole choke fishing tool is designed. The slips with the lower outer cone structure are used to cooperate with the outer cylinder of the inner cone. The thrust of the first spring is used to lock the choke, and the strong force of the second spring is used to lock the choke. Bump the shear pin to securely lock and salvage the throttle.
Benefits of technology
This tool can effectively lock the choke, improve the success rate and convenience of fishing, and avoid low gas well production or well shutdown due to failure to fish in time.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN222376441U_ABST
Abstract
The utility model discloses a downhole throttler fishing tool, which relates to the field of downhole operation tools, and adopts the technical scheme that the downhole throttler fishing tool comprises an upper joint, a short section, a connecting sleeve, a slip and an outer cylinder, the lower end of the upper connector is connected with the outer wall of the upper end of the short section, the core rod is fixedly arranged in the short section in a penetrating mode, the connecting sleeve is arranged outside the lower section of the core rod in a sliding fit mode, the core rod is sleeved with a first spring, the first spring pushes the connecting sleeve downwards, and the connecting sleeve is connected with the lower end of the short section. The lower end of the core rod is outwards arranged on an outer boss for limiting the connecting sleeve, the upper end of the slip is fixed with the connecting sleeve, and the lower end of the slip extends to the lower part of the core rod; the outer wall of the lower end of the short section is connected with the upper end of the outer cylinder, and the inner wall of the lower end of the outer cylinder is of an inner conical surface structure matched with the outer conical surface structure. The slips of the outer conical surface structure of the lower section are matched with the outer barrel of the inner conical surface, and the throttler can be locked under pushing of the first spring so that fishing can be conducted conveniently.
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Citation Information
Patent Citations
Downhole throttle retrieval device
CN107780862B