一种膨胀式尾管悬挂器
By designing the expansion and release mechanisms of the expandable tailpipe hanger, the problem of the tailpipe hanger being unable to be retrieved was solved, enabling controllable expansion and fixation as well as rapid downhole release. This improved operational efficiency and tool reusability, and reduced construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG BAIPAI ENERGY TECH CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing expandable tailpipe hangers cannot be recovered after expansion and sealing, resulting in reduced operational flexibility, increased construction costs and resource waste, and difficulty in resetting when the seal fails.
A tailpipe hanger including an expansion mechanism and a release mechanism was designed. Radial expansion and fixation are achieved by driving the fixed column and the external support assembly of the slider with a cylinder, and rapid downhole release without rotation is achieved by the inner rod and the ball clamping structure, supporting the reuse of the tool.
It achieves controllable expansion force and stable suspension, improves work efficiency and tool reusability, and reduces construction costs and resource waste.
Smart Images
Figure CN224515147U_ABST
Abstract
Claims
1. An expandable tailpipe suspension device, comprising a base tube, characterized in that: An expansion mechanism is slidably connected to the bottom end of the bottom tube, and a release mechanism is fixedly connected inside the bottom tube. The expansion mechanism includes an expander, which is slidably connected to the outside of the bottom tube. A cylinder is installed inside the expander. A fixed column is fixedly connected to the drive end of the cylinder. Multiple slider support assemblies are fixedly connected to the outside of the fixed column. External clamps are fixedly connected to the outside of each of the multiple slider support assemblies.
2. The expandable tailpipe hanger according to claim 1, characterized in that: The disengagement mechanism includes an inner rod, which is fixedly connected to the inside of the bottom tube. A retaining ball is slidably connected to the outside of the inner rod. A retaining groove is opened inside the expander, and a retaining ball is slidably connected inside the retaining groove.
3. The expandable tailpipe hanger according to claim 1, characterized in that: The slider outer support assembly includes multiple fixed guide blocks. Multiple fixed guide blocks are fixedly connected to the outer side of the fixed column. Sliding blocks are slidably connected to the outer side of each of the multiple fixed guide blocks. The outer side of each sliding block is fixedly connected to the inner side of the outer clamp rod.
4. An expandable tailpipe hanger according to claim 2, characterized in that: A spring is fitted on the outer side of the inner rod, and a limit ring is fixedly connected to the bottom end of the spring.
5. An expandable tailpipe hanger according to claim 4, characterized in that: The bottom tube is fixedly connected to the outside of the limiting ring, and an inner rod is slidably connected to the inside of the limiting ring.
6. An expandable tailpipe hanger according to claim 3, characterized in that: The inside of the expander is slidably connected to the outside of the sliding block, and the bottom end of the sliding block is slidably connected to the outside of the fixed column.
7. An expandable tailpipe hanger according to claim 4, characterized in that: The inside of the bottom tube is slidably connected to the outside of the spring, and the inside of the bottom tube is slidably connected to the outside of the retaining ball.
8. An expandable tailpipe hanger according to claim 1, characterized in that: The outer side of the fixed column is slidably connected to the inside of the expander, and the outer side of the expander is slidably connected to the rear end of the outer clamp rod.