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Reaming forced opening tool used in subsurface safety valve

A technology for safety valves and tools, which is applied in wellbore/well valve devices, wellbore/well parts, earthwork drilling and production, etc., which can solve problems such as leakage of liquid control pipelines and downhole safety valves that cannot be opened, and reduce operations Quantity, significant economic benefits, and risk reduction effects

Active Publication Date: 2021-10-01
HUNAN VICTOR PETROTECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After the surface control downhole safety valve has been working normally for a period of time, in rare cases, the hydraulic control pipeline will leak or other reasons will cause the downhole safety valve to fail to open

Method used

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  • Reaming forced opening tool used in subsurface safety valve
  • Reaming forced opening tool used in subsurface safety valve
  • Reaming forced opening tool used in subsurface safety valve

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Embodiment Construction

[0019] See figure 1 — Figure 4 , the reaming forced opening tool used in the downhole safety valve provided by the present invention has external dimensions: the maximum diameter is at least 20mm, and the length is at least 500mm, including an upper joint 1, a lock block push rod 2, a center rod 9, a push rod A rod-shaped body composed of a ball mandrel shaft 19 and a guide cone 23. The upper sleeve of the rod-shaped body is composed of a positioning sleeve 4, a locking sleeve 7, a connecting sleeve 10, a pushing sleeve 13, a lower connecting sleeve 17 and a double ball sleeve 20. The upper part of the sleeve is equipped with a lock block 8 through the through hole, the middle part of the sleeve is provided with a through hole groove 1302, and an interlayer positioning sleeve 15 is arranged between the rod-shaped body and the sleeve. The positioning sleeve 15 is provided with radially movable interlayer positioning keys 14, push keys 16 and positioning projections 24 from to...

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Abstract

The invention discloses a reaming forced opening tool used in a subsurface safety valve. The reaming forced opening tool used in the subsurface safety valve comprises a rod-shaped body, wherein the rod-shaped body sleeves with a sleeve, the upper part of the sleeve is internally provided with a locking block through a through hole, the middle of the sleeve is provided with a through hole groove, and an interlayer positioning sleeve is arranged between the rod-shaped body and the sleeve; an interlayer positioning key, a pushing key and a positioning protruding block which can move in the radial direction are arranged on the interlayer positioning sleeve from top to bottom, the rod-shaped body is provided with a boss with a conical face and a step with an inclined face, the boss and the step are matched with the locking block and the interlayer positioning key in the axial direction, and a key groove-ring groove with a conical face is formed in the rod-shaped body; the pushing key is arranged in the key groove-ring groove of the rod-shaped body and located in the through hole groove of the sleeve, the inner wall of the sleeve is provided with a positioning groove matched with the positioning protruding block, the lower part of the sleeve is provided with a steel ball through a through hole, and the lower part of the rod-shaped body is provided with a conical face matched with the steel ball. According to the reaming forced opening tool used in the subsurface safety valve, the safety valve can be opened by tripping in a steel wire, a large drift diameter is obtained, full opening is kept, and normal production of an oil well is recovered.

Description

technical field [0001] The invention belongs to petroleum downhole tools-special (fault handling) tools, in particular to a hole reaming and forced opening tool used in downhole safety valves. Background technique [0002] Downhole safety valve is an important well control tool. When a serious safety accident occurs and the wellhead control on the ground fails, the downhole safety valve installed in advance can be controlled on the ground to shut off the fluid in the tubing to prevent the accident from expanding. [0003] A typical structure of the ground-controlled downhole safety valve is to realize the pressure (pressurization or decompression) of the liquid in the ground control pipeline through the hydraulic control pipeline extending to the surface to control the switch state of the downhole safety valve. [0004] After the ground-controlled downhole safety valve has been working normally for a period of time, in rare cases, the hydraulic control pipeline will leak or...

Claims

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Application Information

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IPC IPC(8): E21B34/14
CPCE21B34/14
Inventor 施宇李楠肖源泓钟路
Owner HUNAN VICTOR PETROTECH SERVICE
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