CN205189819U - Annular space protection device - Google Patents

Annular space protection device Download PDF

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Publication number
CN205189819U
CN205189819U CN201521036041.2U CN201521036041U CN205189819U CN 205189819 U CN205189819 U CN 205189819U CN 201521036041 U CN201521036041 U CN 201521036041U CN 205189819 U CN205189819 U CN 205189819U
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CN
China
Prior art keywords
oil jacket
ground
passage
piston
annular space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201521036041.2U
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Chinese (zh)
Inventor
吕中芳
解会军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Deepsea Oil Extraction Technology Co Ltd
Tianjin Lemon Tree Technology Development Co Ltd
TIANJIN KERUITEWEI TECHNOLOGY DEVELOPMENT Co Ltd
Original Assignee
Tianjin Deepsea Oil Extraction Technology Co Ltd
Tianjin Lemon Tree Technology Development Co Ltd
TIANJIN KERUITEWEI TECHNOLOGY DEVELOPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Deepsea Oil Extraction Technology Co Ltd, Tianjin Lemon Tree Technology Development Co Ltd, TIANJIN KERUITEWEI TECHNOLOGY DEVELOPMENT Co Ltd filed Critical Tianjin Deepsea Oil Extraction Technology Co Ltd
Priority to CN201521036041.2U priority Critical patent/CN205189819U/en
Application granted granted Critical
Publication of CN205189819U publication Critical patent/CN205189819U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an annular space protection device, include and connect tubing nipple, body and sub -unit connection tubing nipple from last upper portion to connecting gradually down, the cover is equipped with spacing sleeve on the body, the cover is equipped with a plurality of rubber seal section of thick bamboos on spacing sleeve, all is equipped with the sealed ring that keeps off at the upper and lower both ends of a rubber seal section of thick bamboo, being equipped with to sit and sealing a piston lieing in the below of the sealed fender ring of below, seal a chamber sitting to seal to be formed with to sit between piston and the body, sit and seal that the passageway is suppressed with ground in the chamber and lower part oil jacket annulus pressure passageway feeds through respectively, the upper end of suppressing the passageway on ground is connected with the upper portion check valve, is connected with the lower part check valve at the lower extreme of lower part oil jacket annulus pressure passageway, being provided with circulation canal in the lateral wall of body, being connected with the bleed valve at circulation canal's lower extreme, the bleed valve is parallelly connected with the upper portion check valve. The utility model discloses can keep apart the oil jacket annular space, protection oil gas well head, and when needing, can open and wash the kill -job passageway, and sit and can not cause mechanical damage to the sleeve pipe when sealing.

Description

Annular space protective device
Technical field
The utility model relates to a kind of downhole tool for oil gas field, particularly a kind of annular space protective device, for flowing well protection wellhead tree tree, prevents sleeve tube pressure.
Background technology
In the production of flowing well, because various problem appears in flow string, cause oil jacket annular space with pressure, directly threaten the safety of well head, and no longer meet country to the safety requirements in marine petroleum exploitation.Marine petroleum exploitation safety requirements: have the Oil/gas Well from the ability of overflowing, from stratum to ground, twice safety curtain can not be less than.
Present existing annular space protective device mainly adopts packer, and common packer does not have circulation canal, and what cannot meet Oil/gas Well washes kill-job demand, so can not use.Current cable-passing packer can realize protection annular space and have and wash kill-job passage, but needs to suppress from oil pipe inside with slush pump to set, and this just needs a series of less important work operation, operates very loaded down with trivial details.After cable-passing packer sets, needed to carry suitable tonnage during deblocking and carried out deblocking, be subject to the restriction of lifting machinery specified tonnage; And existing cable-passing packer has slip mechanism, when slips sets, mechanical damage can be caused to sleeve pipe, high-pressure oil-gas well is especially needed to avoid.
Summary of the invention
The utility model provides a kind of annular space protective device for solving in known technology the technical problem that exists, and this device can isolate oil jacket annular space, protection oil and gas wellhead; And when needing, can open and wash kill-job passage; And mechanical damage can not be caused to sleeve pipe when setting.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of annular space protective device, comprises the top connected pipes pipe nipple, body and the bottom connected pipes pipe nipple that connect successively from top to bottom, be set with spacing collar on the body, described spacing collar is connected with described body by deblocking pin, described spacing collar is set with multiple rubber seal cylinder, is equipped with seal stopper ring at the two ends up and down of each described rubber seal cylinder, be provided with in the below of the described seal stopper ring being positioned at bottom and set piston, the described piston bush that sets fills on the body, the two is formed and is slidably connected, described set to be formed between piston and described body set chamber, the described chamber that sets is suppressed passage with ground and is communicated with respectively with bottom oil jacket annular pressure passage, passage is suppressed on described ground and described bottom oil jacket annular pressure passage is all arranged in the sidewall of described body, the upper end suppressing passage on described ground is connected with upper one-way valve, bottom one way valve is connected with in the lower end of described bottom oil jacket annular pressure passage, in the sidewall of described body, be also provided with circulation canal, be connected with vent valve in the lower end of described circulation canal, described vent valve is in parallel with described upper one-way valve, and described vent valve and described upper one-way valve are connected with a tee junction.
The advantage that the utility model has and good effect are: be provided with circulation canal, and what can meet Oil/gas Well washes kill-job demand; Suppress realization from ground liquid controling pipe line to set, simple to operate; Cut off deblocking pin by upper lifting pipe post and realize deblocking, deblocking is laborsaving; Adopt rubber seal cylinder to realize setting, damage can not be caused to internal surface of sleeve pipe.Make to set chamber and suppress passage and bottom oil jacket annular pressure channel connection with ground simultaneously, realizing after ground controls to set, in this tool lower portion oil jacket, pressure enables instrument itself realize self-sealing function, makes setting of rubber seal cylinder reliable and stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is one of the utility model generalized section before setting;
Fig. 3 is the generalized section two of the utility model before setting;
Fig. 4 is the generalized section of the utility model after setting.
In figure: 1, top connected pipes pipe nipple, 2, upper one-way valve, 3, spacing collar, 4, rubber seal cylinder, 5, ground suppresses passage, 6, set piston, 7, chamber is set, 8, body, 9, circulation canal, 10, vent valve, 11, bottom connected pipes pipe nipple, 12, bottom one way valve, 13, bottom oil jacket annular pressure passage, 14, deblocking pin, 15, seal stopper ring, 16, production casing, 17, tee junction.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 4, a kind of annular space protective device, comprise the top connected pipes pipe nipple 1, body 8 and the bottom connected pipes pipe nipple 11 that connect successively from top to bottom.
Described body 8 is set with spacing collar 3, and described spacing collar 3 is connected with described body 8 by deblocking pin 14.
Described spacing collar 3 is set with multiple rubber seal cylinder 4, is equipped with seal stopper ring 15 at the two ends up and down of each described rubber seal cylinder 4.
Be provided with in the below of the described seal stopper ring 15 being positioned at bottom and set piston 6, the described piston 6 that sets is sleeved on described body 8, the two is formed and is slidably connected, described set to be formed between piston 6 and described body 8 set chamber 7, the described chamber 7 that sets is suppressed passage 5 with ground and is communicated with respectively with bottom oil jacket annular pressure passage 13, passage 5 is suppressed on described ground and described bottom oil jacket annular pressure passage 13 is all arranged in the sidewall of described body 8, the upper end suppressing passage 5 on described ground is connected with upper one-way valve 2, bottom one way valve 12 is connected with in the lower end of described bottom oil jacket annular pressure passage 13.
Circulation canal 9 is also provided with in the sidewall of described body 8, vent valve 10 is connected with in the lower end of described circulation canal 9, described vent valve 10 is in parallel with described upper one-way valve 2, and described vent valve 10 and described upper one-way valve 2 are connected with a tee junction 17.
During application; above-mentioned annular space protective device is directly installed on tubing hanger bottom; adopt ground hydraulic pipeline to suppress earthward in passage 5 to suppress; hydraulic pressure enters and sets chamber 7; promotion sets on piston 6 and moves, and sets piston 6 upwardly rubber seal cylinder 4, makes rubber seal cylinder 4 produce expanded radially distortion; be pressed on the inwall of production casing 16, realize setting.After above-mentioned annular space protective device sets, bleed off the pressure of liquid controling pipe line, realize the isolation to oil jacket annular space, thus protection well head.After setting, when the pressure in production casing 16 be greater than set pressure time, the pressure in production casing 16 can be entered by bottom one way valve 12 and set chamber 7, is equivalent to carry out persistent pressure to setting chamber 7, achieve self-sealing function, make setting of rubber seal cylinder 4 reliable and stable.
When Oil/gas Well is normally produced, above-mentioned annular space protective device need not set.When only there is phenomenon with pressure in Oil/gas Well sleeve pipe, just need to suppress realization by ground and set.
When Oil/gas Well needs dynamic tubing string operation, again suppress in liquid controling pipe line, open vent valve 10, make circulation canal 9 conducting, thus provide one to wash kill-job passage.
Upper lifting pipe post, makes deblocking pin 14 be cut off, releasing sealed baffle ring 15, and rubber seal cylinder 4 radial contraction, realizes deblocking.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.

Claims (1)

1. an annular space protective device, is characterized in that, comprises the top connected pipes pipe nipple, body and the bottom connected pipes pipe nipple that connect successively from top to bottom;
Be set with spacing collar on the body, described spacing collar is connected with described body by deblocking pin;
Described spacing collar is set with multiple rubber seal cylinder, is equipped with seal stopper ring at the two ends up and down of each described rubber seal cylinder;
Be provided with in the below of the described seal stopper ring being positioned at bottom and set piston, the described piston bush that sets fills on the body, the two is formed and is slidably connected, described set to be formed between piston and described body set chamber, the described chamber that sets is suppressed passage with ground and is communicated with respectively with bottom oil jacket annular pressure passage, passage is suppressed on described ground and described bottom oil jacket annular pressure passage is all arranged in the sidewall of described body, the upper end suppressing passage on described ground is connected with upper one-way valve, bottom one way valve is connected with in the lower end of described bottom oil jacket annular pressure passage,
In the sidewall of described body, be also provided with circulation canal, be connected with vent valve in the lower end of described circulation canal, described vent valve is in parallel with described upper one-way valve, and described vent valve and described upper one-way valve are connected with a tee junction.
CN201521036041.2U 2015-12-10 2015-12-10 Annular space protection device Active CN205189819U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521036041.2U CN205189819U (en) 2015-12-10 2015-12-10 Annular space protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521036041.2U CN205189819U (en) 2015-12-10 2015-12-10 Annular space protection device

Publications (1)

Publication Number Publication Date
CN205189819U true CN205189819U (en) 2016-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521036041.2U Active CN205189819U (en) 2015-12-10 2015-12-10 Annular space protection device

Country Status (1)

Country Link
CN (1) CN205189819U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109779551A (en) * 2019-04-01 2019-05-21 赵锡海 Oil exploitation trouble of lost tool in hole fishing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109779551A (en) * 2019-04-01 2019-05-21 赵锡海 Oil exploitation trouble of lost tool in hole fishing device

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