Single-pipe thermal recovery wellhead device

A wellhead device and thermal recovery technology, applied in the wellbore/well valve device, drill pipe, casing, etc., can solve the problem of not having a steering adjustment structure, increasing the operation difficulty of a single-tube thermal recovery wellhead device, and inability to flexibly adjust the single-tube thermal recovery wellhead device. Problems such as the angle of use of the tube thermal recovery wellhead device to achieve the effect of improving flexibility

Inactive Publication Date: 2022-01-25
东营职业学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing single-tube thermal recovery wellhead device has certain disadvantages in the process of use. The traditional single-tube thermal recovery wellhead device adopts a fixed structure of bolts and flanges, so that it can only be used for oil pipelines of corresponding diameters, thereby reducing its cost. The scope of application makes it impossible to connect pipes of different calibers; secondly, the traditional single-tube thermal recovery wellhead device does not have a steering adjustment structure. When the single-tube thermal recovery wellhead device is installed and used, it cannot flexibly adjust the single-tube thermal recovery The use angle of the wellhead device reduces the flexibility of the single-tube thermal recovery wellhead device; at the same time, the traditional single-tube thermal recovery wellhead device cannot be applied to different types of fixed structures, which increases the operation of the single-tube thermal recovery wellhead device when installing and docking Difficulty, bring certain adverse effects to users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The fixed clip 7 includes a lower clip cover 10 and an upper clip cover 13, the upper clip cover 13 is fixedly installed on the upper outer surface of the lower clip cover 10, and the sides of the lower clip cover 10 and the upper clip cover 13 are all provided with matching bolts for fixing Fixed lug 12, utilize the setting of fixed lug 12, can cooperate bolt to carry out fixing operation between the lower card cover 10 and the upper card cover 13, avoid falling off between the lower card cover 10 and the upper card cover 13.

[0036] The inner sides of the lower card cover 10 and the upper card cover 13 are all movably socketed with a combined clamping plate 14 for docking the second branch pipe 6, and the side outer surface of the combined clamping plate 14 is provided with a positioning clamping strip 16 for docking. Threaded holes 17 for fixing are provided through the bar 16, and the combined clamping plate 14 can be stuck on the inside of the lower clamping cover 10...

Embodiment 2

[0040] The middle part of the upper fixed disc 21 is fixedly equipped with an outer sleeve 20, and the upper middle part of the lower fixed disc 18 is fixedly equipped with an inner sleeve 19. When the upper fixed disc 21 and the lower fixed disc 18 are installed, the inner sleeve 19 and the inner sleeve The pipes 19 are butted, and the upper fixed disk 21 is rotated, so that the first branch pipe 3 completes the rotation adjustment.

[0041] The outer surface of the side of the inner casing 19 is fixedly installed with a limit snap ring, and the inner sides of the upper fixed disk 21 and the lower fixed disk 18 are provided with several groups of through holes for use with the lock bolts. When the outer casing 20 and the inner casing 19 are docked , the lower part of the outer sleeve 20 can be fixed by using the limit snap ring, and at the same time, inserting bolts in the through holes of the upper fixed plate 21 and the lower fixed plate 18 can fix the rotated outer tube 20 ...

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Abstract

The invention belongs to the technical field of oil field wellhead devices, and particularly relates to a single-pipe thermal recovery wellhead device. The single-pipe thermal recovery wellhead device comprises a first branch pipe, a second branch pipe and a four-way pipe, the first branch pipe is fixedly installed on the lower portion of the side edge of the four-way pipe, and the second branch pipe is fixedly installed on the upper portion of the side edge of the four-way pipe. A fixing clamping piece used for butt joint is fixedly installed on the outer surface of the side edge of the second branch pipe, and a rotary fixing piece used for adjusting the angle is arranged in the middle of the four-way pipe. According to the single-pipe thermal recovery wellhead device, a user can install combined clamping plates of corresponding models on a lower clamping cover and an upper clamping cover according to the calibers of pipelines, so that the pipelines of different calibers can be in butt joint and fixed, and the flexibility of the single-pipe thermal recovery wellhead device during installation and operation is improved; and by the arrangement of the rotary fixing piece, a steering adjusting structure can be formed in the middle of the four-way pipe, so that the using angle between the first branch pipe and the second branch pipe is adjusted, the single-pipe thermal recovery wellhead device is provided with the steering adjusting structure, and the using flexibility of the single-pipe thermal recovery wellhead device is improved.

Description

technical field [0001] The invention belongs to the technical field of oilfield wellhead devices, in particular to a single-tube thermal recovery wellhead device. Background technique [0002] The single-tube thermal recovery wellhead device is a wellhead device used in mechanical oil recovery wells, especially suitable for thermal oil recovery wells developed by steam injection, to transport oil bodies in the wells. [0003] The patent document of patent number CN201027522Y discloses a double-tube thermal recovery wellhead device, which includes a casing flange, a large cross, a double-pipe main body, a casing gate valve, a production gate valve, a steam injection gate valve and a test Gate valve; the bottom end of the large four-way is fixedly installed with the casing flange, the side end of the large four-way is fixedly installed with a casing gate valve, the top of the large four-way is fixedly installed with the bottom end of the double-pipe main body, and the double-p...

Claims

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Application Information

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IPC IPC(8): E21B33/03E21B34/02E21B17/00E21B43/24
CPCE21B33/03E21B34/02E21B17/00E21B43/24
Inventor 熊辉
Owner 东营职业学院
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