一种油田井下管柱防落装置
By introducing self-lubricating components and an adjustable power pump into the oilfield downhole tubing anti-fall device, the problem of increased friction was solved, enabling smooth rolling of the centering balls and successful opening of the slips, thus improving the reliability of the anti-fall device and the utilization efficiency of the lubricating oil.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JINHU COUNTY ZHIDIAN PETROLEUM TECH CO LTD
- Filing Date
- 2026-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
In existing oilfield downhole tubing anti-fall devices, the friction between the counterweight steel block and the inner wall of the outer cylinder increases due to oxidation and corrosion, causing the slips to fail to open smoothly and affecting the emergency braking effect.
It employs a self-lubricating component, including a liquid chamber within a counterweight steel block and an adjustable power pump. The friction is reduced by the lubricating oil, and the flow and supply of the lubricating oil are controlled by the adjustable power pump to ensure smooth rolling of the straightening balls, reduce frictional resistance, and recover the lubricating oil when necessary to avoid waste.
It effectively reduces the friction between the centering ball and the counterweight steel block groove, ensuring that the slip opens smoothly, achieving emergency braking, improving the reliability and efficiency of the tube string anti-fall, and optimizing the utilization rate of lubricating oil.
Smart Images
Figure CN121853950B_ABST