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Separable hanger sealing sleeve device

A technology of hanger and sealing sleeve, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of inconvenient installation of sealing devices, and achieve easy assembly and maintenance, cost reduction, and no jamming Effect

Active Publication Date: 2020-11-27
JIANGSU JINSHI MACHINERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantage of inconvenient installation of the sealing device in the prior art hanger, thereby providing a detachable hanger sealing sleeve device

Method used

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  • Separable hanger sealing sleeve device
  • Separable hanger sealing sleeve device
  • Separable hanger sealing sleeve device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a kind of detachable hanger sealing sleeve device, its structure is as follows figure 1 As shown, an extrusion assembly 100 , a sealing assembly 200 and an activation assembly 300 are included.

[0030] Wherein, the extruding assembly 100 is used to provide a movable space, including a bottom plate 110 , a connecting plate 120 movably arranged on the bottom plate 110 , and a pressing plate 130 movably connected on the connecting plate 120 . The movable space among the bottom plate 110 , the connecting plate 120 and the pressing plate 130 can adjust the state of the sealing assembly 200 therein.

[0031] The sealing assembly 200 is used to form a seal between the inner diameter of the casing head and the outer diameter of the hanger, including a first sealing groove 210 formed between the bottom plate 110 and the connecting plate 120, and a first sealing member is arranged in the first sealing groove 210 211, and the second seal groove 220 forme...

Embodiment 2

[0035] The present embodiment provides a detachable hanger sealing sleeve device, including an extrusion assembly 100, including a bottom plate 110, a connecting plate 120 movably arranged on the bottom plate 110, and a pressing plate 130 movably connected on the connecting plate 120; The assembly 200 includes a first sealing groove 210 formed between the bottom plate 110 and the connecting plate 120, a first sealing member 211 is arranged in the first sealing groove 210, and a second sealing groove formed between the connecting plate 120 and the pressure plate 130 220, the second seal groove 220 is provided with a second seal 221; the first seal groove 210 and the second seal groove 220 are respectively located on the inner and outer sides of the extrusion assembly 100; the excitation assembly 300 includes an excitation element connected to the pressure plate 130 310 , a guiding structure 320 is provided on the triggering member 310 , and when the triggering member 310 approac...

Embodiment 3

[0058] This embodiment provides a separable hanger sealing sleeve device, which is different from Embodiment 2 in that the first seal 211 and the second seal 221 in this embodiment are both metal seals 230, and the metal seals 230 include Two metal sealing rings arranged in a staggered manner.

[0059] Specifically, such as Figure 4 As shown, the metal sealing rings in this embodiment are the inner metal ring 231 and the outer metal ring 232 respectively, and the contact surfaces of the inner metal ring 231 and the outer metal ring 232 are inclined surfaces. During the extrusion process of the extrusion assembly 100, the first The outer metal ring 232 of the sealing member 211 moves along the inclined plane and will approach the hanger, while the outer sealing member in the second sealing member 221 will approach the inner wall of the casing head body, thereby completing the simultaneous sealing of the inner and outer sides.

[0060] The metal sealing sleeve device has the c...

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PUM

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Abstract

The invention provides a separable hanger sealing sleeve device. Bidirectional sealing is formed between the inner diameter of a casing head and the outer diameter of a hanger body, and the bidirectional sealing is contracted between a connecting plate and a bottom plate or a pressing plate before a sealing ring is lowered, so that a sealing sleeve device is smooth in lowering, and free of jammingphenomenon and convenient to install, and the embedded sealing sleeve device forms the bidirectional sealing by utilizing an excitation assembly, so that the assembly and the maintenance are convenient, meanwhile, a sealing element can be designed to be rubber sealing or metal sealing as well, the type of the sealing ring can be selected according to actual working conditions, the cost is reduced, and meanwhile the requirements of the working conditions can be met as well.

Description

technical field [0001] The invention relates to the technical field of hangers, in particular to a separable hanger sealing sleeve device. Background technique [0002] During the cementing operation, it is far from enough to rely on the outlet of the casing head to circulate the mud, and part of the mud needs to be returned to the drilling spool. Therefore, a trough hanger is installed in the inner cavity of the casing head, and the mud can flow from the hanger. The open slot of the drill pipe passes upwards and returns to the drilling spool. After the cementing is completed, the sealing sleeve device is installed between the inner diameter of the casing head and the outer diameter of the hanger to seal off the annulus between the strings. At present, the known sealing sleeve device is an integral type, and this sealing sleeve has the following defects: the interference between the sealing ring on the sealing sleeve and the inner wall of the casing head and the outer wall ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/04
CPCE21B33/04
Inventor 常和林邹勇王小晨黄丽李建祥
Owner JIANGSU JINSHI MACHINERY GROUP
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