CN208885204U - A kind of scalable compensator of production string - Google Patents
A kind of scalable compensator of production string Download PDFInfo
- Publication number
- CN208885204U CN208885204U CN201821593196.XU CN201821593196U CN208885204U CN 208885204 U CN208885204 U CN 208885204U CN 201821593196 U CN201821593196 U CN 201821593196U CN 208885204 U CN208885204 U CN 208885204U
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- China
- Prior art keywords
- production string
- compensator
- scalable
- expansion joint
- center pipe
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Abstract
The utility model is a kind of scalable compensator of production string, in the underground production string for petroleum industry subsidence oil-water well, overcomes subsidence damage caused by oil-water well.The scalable compensator of this casing includes reducer union, outer sleeve, expansion joint and telescoping center pipe, reducer union is successively threadedly coupled with outer sleeve and expansion joint, it is connected between expansion joint and telescoping center pipe by key and slot, telescoping center pipe can slide up and down in expansion joint and outer sleeve.The utility model is connected in well head production string below, when depression occurs for the earth's surface on oil-water well periphery, production string can accordingly stretch with the depression of earth's surface, also driven be attached thereto wellhead installation together and ground installation stretches together simultaneously, effectively prevent the oil extraction facility on well head and ground by the stretching of subsidence and caused by various serious consequences and huge loss.
Description
Technical field
The utility model relates to the auxiliary telescopic device of petroleum industry down-hole casing tubing string, especially a kind of production string can
Telescopic compensator, for overcoming subsidence damage caused by oil-water well in the underground production string of subsidence oil-water well.
Background technique
In recent years, the local grassroot project in area increases near petroleum industry oil area, so that the periphery You Qu underground water dosage
It is substantially increased, level of ground water is caused to decline.The especially newly-built saltern project in the periphery You Qu needs to extract subsurface brine for work
Industry production, as the overdraft of subsurface brine is broken so that the surface depression of oil-water well, surface pipe sink in oily area
The balance of oil-water well shaft structure and subsurface equipment, causes production string to become being pressurized from tension, and production string bending is caused to become
Shape, doughnut-shaped steel plate cracking, well head inclination, oil-pump base sinking, well head between surface pipe and production string are raised suddenly
Break the serious damaged condition such as process.And different degrees of sedimentation, oil-water well surface pipe also occur for neighbouring sea wall elevation
30-150 centimetres of sinking, differential settlement integrally occurs for earth's surface.Through investigating, stratum settlement is mainly a large amount of exploitation ground of saltern exploitation
Caused by lower brine.
The appearance of above situation can cause many accident potential, specifically have:
1, after casing doughnut-shaped steel plate cracking, production string cement returns the problems such as casing-broken, perforation once occur for height or more,
Oil gas is leaked casing annulus is invaded, and there are blowout out of control risks.
2, ground integral sinking causes the strain crackings such as oil-water well pipeline, clip, elbow, and oil and gas leakage occurs, in case of bright
Fire easily causes fire explosion, and there are security risks.
3, the accidents such as blowout, the leakage of well head thorn, pipeline leakage will cause saltern, culture zone and extreme shallow water pollution, not only
Biggish pollution damages is generated, local environment can be also destroyed, there are environmentally friendly risks.
4, ground settlement causes the polished rod eye of pumping unit to touch well head, cause down-hole string fall off or pumping unit to turn over machine etc. great
Equipment breakdown.
5, well and the thorn leakage of high pressure water injection pipeline will cause high-pressure fluid to hurt inspection, operator and periphery personnel
Evil, easily generation personnel casualty accidents.
6, when underground work disassembly well head, there are screws of wellhead fracture, well head four-way large flanges to raise cause the person suddenly
The hidden danger of injury.
7, such as big tank Equipment Foundations of building -- such as house, structures --, sea wall, earth's surface differential settlement,
Main structure is easily caused crack occur, collapse.
In view of the above problems, the measure taken at present: first is that the ring-like steel plate of repair welding；Second is that raising earth foundation improvement.Through reality
It applies, still will appear secondary the case where snapping after repair welding doughnut-shaped steel plate, raise earth foundation and control table and do not effect a permanent cure.The above problem does not obtain
It is solved to thorough, it is important to develop a kind of telescopic mounting for down-hole casing tubing string, allow down-hole casing tubing string automatic telescopic, suitable
Answer the sedimentation on stratum.
Summary of the invention
The purpose of the utility model is to provide a kind of scalable compensators of production string, stretch the production string of underground
Contracting overcomes subsidence damage caused by oil-water well, protects well head and ground oil extraction facility, reduces production cost.
The technical solution of the utility model is: a kind of scalable compensator of production string includes reducer union, housing
Cylinder, expansion joint and telescoping center pipe, reducer union are successively threadedly coupled with outer sleeve and expansion joint, expansion joint with stretch
It is connected by key with slot between central tube, telescoping center pipe can slide up and down in expansion joint and outer sleeve.
With it is existing overcome the method for subsidence compared with, the utility model have following significant using effect.
The utility model is connected in well head production string below, when depression occurs for the earth's surface on oil-water well periphery, oil reservoir
Casing can accordingly stretch with the depression of earth's surface, also drive the wellhead installation and ground installation being attached thereto together simultaneously
Stretch together, effectively prevent the oil extraction facility on well head and ground by the stretching of subsidence and caused by it is various tight
Weight consequence and huge loss.Its effect is mainly manifested in:
(1) stroke of this sleeve compensator can satisfy the casing of region ground settlement generation up to 600mm-1400mm
Sinking amplitude requirement.
(2) telescoping center pipe is connect with expansion joint by key and slot, can be prevented production string from circumferentially rotating, be avoided oil reservoir
Casing mistake section has enough axial torques, can meet oil field development requirement.
(4) this sleeve compensator is connected in the bunch tube of production string in tripping in production string, be located at well head with
Under and pit shaft without being fixed in oil-water well together after well cementation with production string in the production string of cement sealing.
(5) in depression well occur doughnut-shaped steel plate snap, casing-broken phenomena such as when, can pass through Casing-Cutting, even
After connecing this tool, the mode of casing hanger is reinstalled, the old well of depression is made to come back to life.
The utility model structure is simple, and easy to connect, the lifting with underground production string are gone into the well easy, and manufacturing cost is low
It is honest and clean, there is significant using effect and significant economic benefit can be generated.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, not limits the protection scope of the utility model.It is as described below to be only
The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should belong to the protection of the utility model
Range.
Referring to Fig. 1, a kind of scalable compensator of production string includes reducer union 2, outer sleeve 3, expansion joint 4 and flexible
Central tube 5, reducer union 2 are successively threadedly coupled with outer sleeve 3 and expansion joint 4, between expansion joint 4 and telescoping center pipe 5
It is connected by key with slot, telescoping center pipe 5 can slide up and down in expansion joint 4 and outer sleeve 3.
The lower lumen of the expansion joint 4 is connect equipped with thread segment with outer sleeve 3, upper lumen is equipped with connecting key, should
Connecting key is equipped with adapter cavity, which is taper at least provided with two between the upper lumen and lower lumen of expansion joint 4
Chamber.
The lower part outer circle of the telescoping center pipe 5 is equipped with sealing element installation groove, top outer circle is equipped with link slot, the connection
Connecting key in slot and expansion joint 4 cooperates, and is transition outer circle between the lower part outer circle and top outer circle of telescoping center pipe 5,
The transition outer circle is the adapter cavity cooperation of conical external circle and expansion joint 4.In expansion joint 4 and telescoping center pipe 5 connecting key and
The setting of link slot, it is therefore prevented that underground production string circumferentially rotates.
There are three the sealing element installation groove of the telescoping center pipe 5 is set, it is close that it is respectively charged into pressure ring 9, circle from bottom to top
Seal 10 and rectangular seal washer 11.
The internal diameter of the outer sleeve 3 is consistent with the lower outer diameter of telescoping center pipe 5, the length and telescoping center of outer sleeve 3
The length of pipe 5 is consistent, and the length of outer sleeve 3 and the length of telescoping center pipe 5 are set between 600mm-1400mm, this compensator
Scalable effective travel it is big, can satisfy the subsiding extent of earth's surface completely.
The described scalable compensator of casing is connected to the production string of well head or less and pit shaft without cement sealing
In.
The lower part of the described scalable compensator of casing is connect and by lower connection by reducer union 2 with lower connector 1
Pipe 1 is threadedly coupled with production string box cupling.For convenience of the connection of this compensator and production string, it is set using lower connector 1
The mode connecting with production string coupling inner thread can also directly be connect with the external screw thread of production string by reducer union 2.
The top of the described scalable compensator of casing by telescoping center pipe 5 successively with box cupling 1, upper connector 7 and
Box cupling 28 is connected and is threadedly coupled by box cupling 28 with production string.In order to protect the tube body and tube body of telescoping center pipe 5
On link slot, the present apparatus and lifting are simultaneously realized by box cupling 1 and box cupling 28 provided with the upper connector 7 that uses of lifting
Special-purpose member upper connector 7 and between production string connection type conversion, both facilitated the scalable compensator of this casing
Lifting of going into the well, and protect telescoping center pipe 5.If being not provided with lifting special-purpose member upper connector 7, can also will it is flexible in
Heart pipe 5 is directly connect with production string box cupling.
The embodiment described above is only exemplary embodiments, but the utility model is not limited only to these embodiments, ability
The technical staff in domain can make modification under the spirit and enlightenment without departing from the utility model.Aspect disclosed herein may
In the presence of many changes, combination and modification, and all in the scope of the utility model, therefore, protection scope is not limited only to above
Explanation.
Claims (8)
1. a kind of scalable compensator of production string, characterized in that including reducer union, outer sleeve, expansion joint and it is flexible in
Heart pipe, reducer union are successively threadedly coupled with outer sleeve and expansion joint, between expansion joint and telescoping center pipe by key and
Slot connection, telescoping center pipe can slide up and down in expansion joint and outer sleeve.
2. a kind of scalable compensator of production string as described in claim 1, characterized in that in the lower part of the expansion joint
Chamber is equipped with that thread segment is connect with outer sleeve, upper lumen is equipped with connecting key, the connecting key at least provided with two, expansion joint it is upper
Adapter cavity is equipped between portion inner cavity and lower lumen, which is conical cavity.
3. a kind of scalable compensator of production string as claimed in claim 2, characterized in that the lower part of the telescoping center pipe
Outer circle is equipped with sealing element installation groove, top outer circle is equipped with link slot, and the connecting key in the link slot and expansion joint cooperates,
It is transition outer circle between the lower part outer circle and top outer circle of telescoping center pipe, which is conical external circle and expansion joint
Adapter cavity cooperation.
4. a kind of scalable compensator of production string as claimed in claim 3, characterized in that the sealing of the telescoping center pipe
There are three part installation groove is set, it is respectively charged into pressure ring, circular seal ring and rectangular seal washer from bottom to top.
5. the scalable compensator of a kind of production string as described in claim 3 or 4, characterized in that the internal diameter of the outer sleeve
Be consistent with the lower outer diameter of telescoping center pipe, the length of outer sleeve is consistent with the length of telescoping center pipe, the length of outer sleeve and
The length of telescoping center pipe is set between 600mm-1400mm.
6. a kind of scalable compensator of production string as described in claim 1, characterized in that the scalable compensator of described sleeve pipe
Well head or less and pit shaft are connected to without in the production string of cement sealing.
7. a kind of scalable compensator of production string as claimed in claim 6, characterized in that the scalable compensator of described sleeve pipe
Lower part connect with lower connector by reducer union and pass through lower connector and be threadedly coupled with production string box cupling.
8. a kind of scalable compensator of production string as claimed in claim 7, characterized in that the scalable compensator of described sleeve pipe
Top successively connect with box cupling one, upper connector and box cupling two by telescoping center pipe and by box cupling two and production string spiral shell
Line connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821593196.XU CN208885204U (en) | 2018-09-28 | 2018-09-28 | A kind of scalable compensator of production string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821593196.XU CN208885204U (en) | 2018-09-28 | 2018-09-28 | A kind of scalable compensator of production string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885204U true CN208885204U (en) | 2019-05-21 |
Family
ID=66514394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821593196.XU Expired - Fee Related CN208885204U (en) | 2018-09-28 | 2018-09-28 | A kind of scalable compensator of production string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963126A (en) * | 2021-03-26 | 2021-06-15 | 中勘资源勘探科技股份有限公司 | Coal mine mining area ground gas extraction well expansion device and use method |
| CN114016937A (en) * | 2021-11-14 | 2022-02-08 | 韩一泉 | Deblocking workover rig |
-
2018
- 2018-09-28 CN CN201821593196.XU patent/CN208885204U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963126A (en) * | 2021-03-26 | 2021-06-15 | 中勘资源勘探科技股份有限公司 | Coal mine mining area ground gas extraction well expansion device and use method |
| CN114016937A (en) * | 2021-11-14 | 2022-02-08 | 韩一泉 | Deblocking workover rig |
| CN114016937B (en) * | 2021-11-14 | 2023-11-24 | 通化石油化工机械制造有限责任公司 | Deblocking workover rig |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20200928 |