CN207485399U - A kind of annular preventer - Google Patents

A kind of annular preventer Download PDF

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Publication number
CN207485399U
CN207485399U CN201721104264.7U CN201721104264U CN207485399U CN 207485399 U CN207485399 U CN 207485399U CN 201721104264 U CN201721104264 U CN 201721104264U CN 207485399 U CN207485399 U CN 207485399U
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China
Prior art keywords
shell
air bag
housing
annular
glue core
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CN201721104264.7U
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Chinese (zh)
Inventor
吴建光
毛正义
张健
綦耀光
郭晖
朱洪迎
张兵
张芬娜
孟尚志
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.)
China University of Petroleum UPC East China
China United Coalbed Methane Co Ltd
Original Assignee
China University of Petroleum UPC East China
China United Coalbed Methane Co Ltd
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Priority to CN201721104264.7U priority Critical patent/CN207485399U/en
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Publication of CN207485399U publication Critical patent/CN207485399U/en
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Abstract

The utility model discloses a kind of annular preventer, including first shell, air bag and inflating port.The annular preventer that this programme provides, gas are filled with gas as the dynamic medium that air bag is pushed to hold oil pipe tightly, charge valve between first shell and air bag, and air bag deforms, and holds oil pipe tightly, realizes the sealing of annular space between oil pipe and casing;When light maintenance operation needs to carry oil pipe; since the compressibility of gas is preferable; tubing coupling can be with extruding gasbag; gas between air bag and first shell, which is squeezed, to be deformed upon; make the space among air bag that tubing coupling be allowed directly to pass through; the time that hydraulic annular preventer is waited for open and close is eliminated relative to the prior art; so as to shorten the oil pipe lifting time of light maintenance operation; also the time of light maintenance operation is just shortened; the efficiency of light maintenance operation is improved, protects the reservoir in snubbing serving.

Description

A kind of annular preventer
Technical field
The utility model is related to Coal-seam Gas Recovery Technologies field, more particularly to a kind of annular preventer.
Background technology
Snubbing serving is a kind of operation of lower tubular column operating special installation by professional technician in environment with pressure Method.
Snubbing serving equipment includes workbench, hoisting system, slips group and preventer group, and wherein preventer group includes ring Shape preventer and bleed off pressure/balance four-way.
Annular preventer uses hydraulic annular preventer in the prior art, when light maintenance operation promotes oil pipe, for connecting The tubing coupling of adjacent oil pipe is relatively large in diameter, and hydraulic annular preventer cannot directly pass through, when tubing coupling passes through hydraulic pressure ring During air defence spray apparatus, for fuel feed pump box cupling by hydraulic pressure annular blowout preventer need to close, so that tubing coupling passes through, and other It needs, in opening, to ensure the sealing of annular space between oil pipe and casing, to lead to the hydraulic pressure annular blowout preventer of oil pipe cooperation It crosses above-mentioned be alternately opened and closed using multiple hydraulic pressure annular blowout preventers and realizes tubing coupling by way of, need that hydraulic pressure annular space is waited for prevent Spray apparatus opens and closes, and the oil pipe lifting time for causing light maintenance operation is longer, also just extends the time of light maintenance operation, reduces The efficiency of light maintenance operation;Simultaneously because coalbed methane reservoir produces water characteristic, the long well workover time can also cause true kill-job, destroy Reservoir in snubbing serving.
Therefore, how to shorten the time of light maintenance operation, improve the efficiency of light maintenance operation, protect the storage in snubbing serving Layer, becomes the technical issues of those skilled in the art are urgently to be resolved hurrily.
Utility model content
In view of this, the utility model provides a kind of annular preventer, to shorten the time of light maintenance operation, improves light maintenance The efficiency of operation protects the reservoir in snubbing serving.
To achieve the above object, the utility model provides following technical solution:
A kind of annular preventer, including:
First shell;
Air bag, the air bag are set to the inner cavity of the first shell and are sheathed on oil-pipe external wall, the outer wall of the air bag Inflatable chamber is formed between the inner wall of the first shell, the upper surface of the air bag and the upper surface of the first shell are fixed Connection, the lower face of the air bag is fixedly connected with the lower face of the first shell;
It offers the inner wall of the air bag to be made to be bonded with oil pipe to the inflation interacvity air-filling in the first shell Inflating port.
Preferably, it in above-mentioned annular preventer, further includes:
The glue core of the air bag inner wall is set to, the glue core retainer plate is located at the outer wall of the oil pipe.
Preferably, in above-mentioned annular preventer, the upper surface of the air bag and the upper surface of the first shell are clamped, The lower face of the air bag and the lower face of the first shell are clamped;
It further includes:
For compressing the upper surface of the air bag in the second shell of the upper surface of the first shell;
For compressing third housing of the lower face in the lower face of the first shell of the air bag.
Preferably, in above-mentioned annular preventer, the upper surface of the air bag is provided with the first annular projection, and described first The upper surface of housing is provided with the first annular recess coordinated with first annular projection;The lower face of the air bag is provided with Second annular projection, the lower face of the first shell are provided with the second annular recess coordinated with second annular projection.
Preferably, in above-mentioned annular preventer, the lower end of the upper end of the glue core and the glue core is both provided with glue core Skeleton, the glue core crab positioned at the upper end of the glue core is connect with the second shell by the first jackscrew, positioned at the glue core The glue core crab of lower end connect with the third housing by the second jackscrew.
Preferably, it in above-mentioned annular preventer, further includes:
4th housing, the 4th housing are located at the upper end of the second shell, offer and be used on the 4th housing Export the exhaust pipe of shaft bottom exhaust gas;
Caulking gum, the caulking gum include the connecting portion coordinated with the upper surface of the 4th housing and with the oil The outer wall of pipe is bonded the sealing of the upper end annular space for exhaust gas to be prevented to be spilled over to the connecting portion, and the sealing is relative to institute The axis for stating the 4th housing is in tilted layout, and the upper end of the lower end sealing of the sealing is close to the 4th housing Axis;
For compressing the gland of the caulking gum.
Preferably, in above-mentioned annular preventer, the end of the sealing is inclined surface, and the inclined surface upper end is compared with institute State axis of the lower end close to the 4th housing of inclined surface.
Preferably, in above-mentioned annular preventer, third annular projection, the 4th housing are provided on the connecting portion On offer the third annular recess coordinated with the third annular projection;
The gland is connect with the 4th casing bolts;
4th housing is positioned with the second shell by pin, and the 4th housing passes through with the second shell It is bolted.
Preferably, in above-mentioned annular preventer, the second shell is bolted with the first shell, the third Housing is bolted with the first shell;
Sealing ring, the third housing and the first shell are provided between the second shell and the first shell Between be provided with the sealing ring.
Preferably, in above-mentioned annular preventer, the air bag and the first shell are coaxially arranged;
Charge valve is provided on the inflating port.
It can be seen from the above technical proposal that annular preventer provided by the utility model, including first shell, air bag and Inflating port.The annular preventer that this programme provides, gas is as the dynamic medium for pushing air bag holding oil pipe, and charge valve is to first Gas is filled between housing and air bag, air bag deforms, and holds oil pipe tightly, realizes the sealing of annular space between oil pipe and casing;It is small When repairing operation needs to carry oil pipe, since the compressibility of gas is preferable, tubing coupling can be with extruding gasbag, positioned at air bag and Gas between one housing, which is squeezed, to be deformed upon, and makes the space among air bag that tubing coupling be allowed directly to pass through, relative to existing There is technology to eliminate the time that hydraulic annular preventer is waited for open and close, when above being carried so as to shorten the oil pipe of light maintenance operation Between, the time of light maintenance operation is also just shortened, the efficiency of light maintenance operation is improved, protects the reservoir in snubbing serving.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of annular preventer that the utility model embodiment provides.
1st, caulking gum, 2, exhaust pipe, 3, pin, the 4, first jackscrew, 5, glue core crab, 6, charge valve, 7, glue core, 8, gas Capsule, 9, third housing, 10, first shell, 11, sealing ring, 12, second shell, the 13, the 4th housing, 14, bolt, 15, gland.
Specific embodiment
The utility model discloses a kind of annular preventers, to shorten the time of light maintenance operation, improve the effect of light maintenance operation Rate protects the reservoir in snubbing serving.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the structure diagram of annular preventer that the utility model embodiment provides.
The utility model discloses a kind of annular preventer, including first shell 10, air bag 8 and inflating port 6.
First shell 10 is located at outermost layer, and the outer wall of first shell 10 is bonded with the inner wall of casing, plays protection internal zero The effect of part
Air bag 8 is set to the inner cavity of first shell 10 and is sheathed on oil-pipe external wall, outer wall and the first shell 10 of air bag 8 Inflatable chamber is formed between inner wall, inflatable chamber provides space for the infeed of gas.It is offered in first shell 10 for inflation Interacvity air-filling makes the inflating port 6 that the inner wall of air bag 8 and oil pipe are bonded.
In a specific embodiment of this programme, whole air bag 8 is in I-shaped.
By inflating port 6, into inflatable chamber, gas injection, the gas in inflatable chamber make the inner wall of air bag 8 be pressed in oil pipe Outer wall realizes the sealing of the annular space between oil pipe and casing.
The upper surface of air bag 8 is fixedly connected with the upper surface of first shell 10, lower face and the first shell 10 of air bag 8 Lower face is fixedly connected, and prevents the air bag 8 during air bag 8 compresses oil pipe from coming off from first shell 10.
The annular preventer that this programme provides, dynamic medium of the gas as holding oil pipe, charge valve 6 is to first shell 10 Gas is filled between air bag 8, air bag 8 deforms, and holds oil pipe tightly, realizes the sealing of annular space between oil pipe and casing;Light maintenance When operation needs to carry oil pipe, since the compressibility of gas is preferable, the tubing coupling of adjacent oil pipe can be with extruding gasbag 8, position Gas between air bag 8 and first shell 10, which is squeezed, to be deformed upon, and the space among air bag 8 is made to allow tubing coupling direct Pass through, the time that hydraulic annular preventer is waited for open and close is eliminated relative to the prior art, so as to shorten light maintenance work The oil pipe lifting time of industry also just shortens the time of light maintenance operation, improves the efficiency of light maintenance operation.
The annular preventer that this programme provides, further includes glue core 7.Glue core 7 is set to the inner wall of air bag 8, and glue core 7 is arranged In the outer wall of oil pipe.
The annular preventer that this programme provides has been sequentially arranged first shell from casing to oil pipe along the radial direction of oil pipe 10th, air bag 8 and glue core 7, and glue core 7 is located at innermost layer.
This programme provide annular preventer, gas as push glue core 7 holding oil pipe dynamic medium, charge valve 6 to Inflatable chamber between first shell 10 and air bag 8 is filled with gas, and air bag 8 pushes glue core 7 to deform, and holds oil pipe tightly, realizes oil The sealing of annular space between pipe and casing;When light maintenance operation needs to carry oil pipe, since the compressibility of gas is preferable, adjacent oil pipe Tubing coupling can squeeze glue core 7, and then 7 extruding gasbag 8 of glue core, the gas between air bag 8 and first shell 10 by Extruding deforms upon, and makes the space of glue core 7 tubing coupling be allowed directly to pass through, and is eliminated relative to the prior art and waits for hydraulic pressure ring The time that shape preventer opens and closes, so as to shorten the oil pipe lifting time of light maintenance operation, also just shorten light maintenance operation Time, improve the efficiency of light maintenance operation, protect the reservoir in snubbing serving.
The design of glue core 7 enhances the wearability of annular preventer and higher use intensity, extends to a certain extent The service life of annular preventer.
The annular preventer that this programme provides, first shell 10 form pneumatic tyre with air bag 8, glue core 7 are provided along oil pipe diameter To the resilient support in direction, the leakproofness of annular preventer is improved, and pneumatic tyre is relative to solid elastic part and hydroelastic system part Elasticity it is big, solve the problems, such as tubing coupling by when serious wear, extend the service life of annular preventer.
When the gas pressure between the first shell 10 of annular preventer and air bag 8 is excessive, can by inflating port 6 to The certain gas of outer discharge, to meet the requirement above proposed to the holding of oil pipe or tubing coupling.One in this programme is specific In embodiment, inflating port 6 is opened in the side wall of first shell 10.
The supercharging for the annular preventer that this programme provides and pressure decay rate are fast, further improve the efficiency of light maintenance operation.
The cost for the annular preventer that this programme provides is simple in structure relative to hydraulic annular preventer, at low cost.
The upper surface of air bag 8 is clamped with the upper surface of first shell 10, the lower face of air bag 8 and the lower end of first shell 10 Face is clamped, and the difficulty that air bag 8 connect with first shell 10 can be reduced, while facilitate air bag 8 using the connection mode of clamping Installation and replacement.
Stablizing for air bag 8 is fixed in order to realize, the annular preventer that this programme provides further includes second shell 12 and the Three housings 9.
Second shell 12 is used to compress the upper surface of air bag 8 in the upper surface of first shell 10, and third housing 9 is used to compress The lower face of air bag 8 is in the lower face of first shell 10.
The compression of the upper surface and lower face to air bag 8 is realized by second shell 12 and third housing 9, is increased to gas The upper surface of capsule 8 and the compression area of lower face, this kind of compression mode can not only ensure the compression effect to air bag 8, and The damage to air bag 8 can be reduced, extends the service life of air bag 8.
Air bag 8 and the clamping structure of second shell 12 and third housing 9 are as follows:
The upper surface of air bag 8 is provided with the first annular projection, the upper surface of first shell 10 be provided with it is first cyclic annular convex Play the first annular recess of cooperation.
The lower face of air bag 8 is provided with the second annular projection, the lower face of first shell 10 be provided with it is second cyclic annular convex Play the second annular recess of cooperation.
First annular projection of 8 upper surface of air bag is connected in the first annular recess, and the second of 8 upper surface of air bag is cyclic annular convex It rises and is connected in the second annular recess, after the completion of clamping, then by second shell 12 and third housing 9 air bag 8 is compressed, It ensure that the compression effect to air bag 8.
In order to advanced optimize above-mentioned technical proposal, in a specific embodiment of this programme, the upper end of glue core 7 and The lower end of glue core 7 is both provided with glue core crab 5, and glue core crab 5 is capable of the intensity of the top and bottom of reinfored glue core 7, extends glue The service life of core 7.
In a specific embodiment of this programme, the upper end of glue core 7 extends to the inner wall of second shell 12, glue core 7 Lower end extends to the inner wall of third housing 9, i.e. the length of glue core 7 begins to pass through first shell 10 from second shell 12 and extends to Three housings 9.
Glue core crab 5 positioned at the upper end of glue core 7 is connect with second shell 12 by the first jackscrew 4, under glue core 7 The glue core crab 5 at end is connect with third housing 9 by the second jackscrew.Glue core 7 and glue are realized by the first jackscrew 4 and the second jackscrew The connection of core crab 5 can facilitate the installation and removal of glue core 7, and can reduce the interference to other parts.
The annular preventer that this programme provides further includes the 4th housing 13, caulking gum 1 and gland 15.4th housing 13, Caulking gum 1 and gland 15 constitute spilling gas recovery system, ensure job safety.
4th housing 13 is located at the upper end of second shell 12, and the row for exporting shaft bottom exhaust gas is offered on the 4th housing 13 Tracheae 2.
Caulking gum 1 includes the connecting portion coordinated with the upper surface of the 4th housing 13 and is bonded to prevent with the outer wall of oil pipe Only exhaust gas is spilled over to the sealing of the upper end annular space of connecting portion, and sealing is in tilted layout relative to the axis of the 4th housing 13, close The lower end in envelope portion compared with sealing upper end close to the 4th housing 13 axis.
Gland 15 is used to compress caulking gum 1.
The seal portion angled arrangement of caulking gum 1, forms between the outer wall of sealing and the inner wall of the 4th housing 13 and holds Receive the space of exhaust gas, after the space between glue core 7 and oil pipe is entered positioned at the exhaust gas of sealing lower part, exhaust gas can enter sealing Between portion and the 4th housing 13 receiving exhaust gas space, at this time exhaust gas sealing can be pushed further to compress oil pipe, prevent from giving up Gas enters the annular space on annular preventer top, plays the role of ensureing operation installation.
After the space for accommodating exhaust gas is filled with shaft bottom exhaust gas, exhaust gas is expelled to by the exhaust pipe 2 of the 4th housing 13 outside well Waste gas recovering device ensures the safety of well site and personnel during operation.
Gland 15, which is used to implement, is pressed on caulking gum 1 on the 4th housing 13, ensures effective pressure to caulking gum 1 Tightly, so as to ensure the safety of operation.
In order to which caulking gum 1 is made not influence the operation that raises and decentralizes of oil pipe, the end of sealing is inclined surface, inclined surface Upper end compared with inclined surface lower end close to the 4th housing 13 axis.The inclined surface of the end of sealing can to oil pipe above carry and Decentralization plays guiding role, and can ensure the close patch of sealing end and oil pipe in by exhaust gas extrusion process in sealing It closes.
1 and the 4th housing 13 of caulking gum is specific as follows using the type of attachment being clamped:
Third annular projection is provided on connecting portion, the third coordinated with third annular projection is offered on the 4th housing 13 Annular recess.Third annular projection is caught in third annular recess, and gland 15 realizes the compression to the clamping structure.
In order to facilitate the installation of 15 and the 4th housing 13 of gland, gland 15 is bolted with the 4th housing 13 or gland 15 are threadedly coupled with the 4th housing 13.
In a specific embodiment of this programme, the 4th housing 13 is positioned with second shell 12 by pin 3, and the 4th Housing 13 is connect with second shell 12 by bolt 14.
Second shell 12 is bolted with first shell 10, and third housing 9 is bolted with first shell 10, realizes Two housings 12 and third housing 9 are detachably connected with first shell 10, facilitate subsequent repair.
In order to ensure the leakproofness of annular preventer, sealing ring 11 is provided between second shell 12 and first shell 10, Sealing ring 11 is provided between third housing 9 and first shell 10.Sealing ring 11 between second shell 12 and first shell 10 Second shell 12 is compressed by second shell 12, the sealing ring 11 between third housing 9 and first shell 10 passes through third housing 9 compress.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide range consistent with features of novelty.

Claims (10)

1. a kind of annular preventer, which is characterized in that including:
First shell (10);
Air bag (8), the air bag (8) are set to the inner cavity of the first shell (10) and are sheathed on oil-pipe external wall, the air bag (8) inflatable chamber, the upper surface and described first of the air bag (8) are formed between outer wall and the inner wall of the first shell (10) The upper surface of housing (10) is fixedly connected, and the lower face of the air bag (8) is fixed with the lower face of the first shell (10) to be connected It connects;
It offers the air bag (8) to be made to be bonded with the oil pipe to the inflation interacvity air-filling on the first shell (10) Inflating port (6).
2. annular preventer according to claim 1, which is characterized in that further include:
The glue core (7) of the air bag (8) inner wall is set to, the glue core (7) is set in the outer wall of the oil pipe.
3. annular preventer according to claim 2, which is characterized in that the upper surface and described first of the air bag (8) The upper surface clamping of housing (10), the lower face of the air bag (8) is clamped with the lower face of the first shell (10);
It further includes:
For compressing second shell (12) of the upper surface in the upper surface of the first shell (10) of the air bag (8);
For compressing third housing (9) of the lower face in the lower face of the first shell (10) of the air bag (8).
4. annular preventer according to claim 3, which is characterized in that the upper surface of the air bag (8) is provided with first Annular projection, the upper surface of the first shell (10) are provided with the first annular recess coordinated with first annular projection; The lower face of the air bag (8) is provided with the second annular projection, and the lower face of the first shell (10) is provided with and described Second annular recess of two annular projections cooperation.
5. annular preventer according to claim 3, which is characterized in that the upper end of the glue core (7) and the glue core (7) Lower end be both provided with glue core crab (5), glue core crab (5) and the second shell positioned at the upper end of the glue core (7) (12) it is connected by the first jackscrew (4), glue core crab (5) and the third housing (9) positioned at the lower end of the glue core (7) are logical Cross the connection of the second jackscrew.
6. annular preventer according to claim 3, which is characterized in that further include:
4th housing (13), the 4th housing (13) is positioned at the upper end of the second shell (12), the 4th housing (13) On offer exhaust pipe (2) for exporting shaft bottom exhaust gas;
Caulking gum (1), the caulking gum (1) including the connecting portion with the cooperation of the upper surface of the 4th housing (13) and with The outer wall of the oil pipe is bonded the sealing of the upper end annular space for exhaust gas to be prevented to be spilled over to the connecting portion, the sealing phase It is in tilted layout for the axis of the 4th housing (13), the upper end of the lower end sealing of the sealing is close to described The axis of 4th housing (13);
For compressing the gland of the caulking gum (1) (15).
7. annular preventer according to claim 6, which is characterized in that the end of the sealing is inclined surface, described The lower end of the inclined surface upper end inclined surface is close to the axis of the 4th housing (13).
8. annular preventer according to claim 6, which is characterized in that it is convex that third ring-type is provided on the connecting portion It rises, the third annular recess coordinated with the third annular projection is offered on the 4th housing (13);
The gland (15) is bolted with the 4th housing (13);
4th housing (13) and the second shell (12) are positioned by pin (3), the 4th housing (13) with it is described Second shell (12) is connected by bolt (14).
9. annular preventer according to claim 3, which is characterized in that the second shell (12) and the first shell (10) it is bolted, the third housing (9) is bolted with the first shell (10);
Be provided with sealing ring (11) between the second shell (12) and the first shell (10), the third housing (9) with The sealing ring (11) is provided between the first shell (10).
10. annular preventer according to claim 1, which is characterized in that the air bag (8) and the first shell (10) It is coaxially arranged;
Charge valve is provided on the inflating port (6).
CN201721104264.7U 2017-08-30 2017-08-30 A kind of annular preventer Active CN207485399U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721104264.7U CN207485399U (en) 2017-08-30 2017-08-30 A kind of annular preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721104264.7U CN207485399U (en) 2017-08-30 2017-08-30 A kind of annular preventer

Publications (1)

Publication Number Publication Date
CN207485399U true CN207485399U (en) 2018-06-12

Family

ID=62481641

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721104264.7U Active CN207485399U (en) 2017-08-30 2017-08-30 A kind of annular preventer

Country Status (1)

Country Link
CN (1) CN207485399U (en)

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