CN204371261U - A kind of locking mechanism of major diameter restriction choke - Google Patents
A kind of locking mechanism of major diameter restriction choke Download PDFInfo
- Publication number
- CN204371261U CN204371261U CN201420672427.1U CN201420672427U CN204371261U CN 204371261 U CN204371261 U CN 204371261U CN 201420672427 U CN201420672427 U CN 201420672427U CN 204371261 U CN204371261 U CN 204371261U
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- CN
- China
- Prior art keywords
- slips
- restriction choke
- major diameter
- locking mechanism
- light face
- 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.)
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- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
The utility model belongs to production gas technology field, oil field, specifically provides a kind of locking mechanism of major diameter restriction choke, comprises restriction choke body, fishing neck, light face slips and two slips with tooth; Described fishing neck is socketed on the outer wall of restriction choke body upper end, and it is radially evenly provided with three grooves, three slip grooves are radially evenly distributed with in the middle of described restriction choke body, the upper end of described light face slips and two slips with tooth is separately fixed in three grooves of fishing neck, light face slips and two slips with tooth are arranged on restriction choke body, and are fixed in three slip grooves of restriction choke body.This utility model makes full use of the asymmetrical design of light face slips and slips with tooth, and when light face slips sets, destruction of balance when maintenance balance, unfreezing, solves the problem that major diameter underground throttle device is difficult to resolve envelope.
Description
Technical field
The utility model belongs to production gas technology field, oil field, is specifically related to a kind of locking mechanism of major diameter restriction choke, is applicable to a kind of major diameter restriction choke locking mechanism that can set easy deblocking in gas exploitation course.
Background technology
In order to well well yield of improving the standard further, Soviet Union's Sulige gas field has carried out " volume fracturing " extend trial, for increasing discharge capacity, adopts 4
1/
2" oil pipe is as pressure break gas production integrated pipe column.This type of well adopts well head heating, the throttling mode of production at present, and cost of production is high, management difficulty is large, security risk is large.In view of the ripe application experience of Soviet Union's Sulige gas field downhole choke technology, carry out 4
1/
2" the design research and development of tubing string downhole choke device, carry out downhole choke step-down in early stage and produce, to improve " volume fracturing " overall efficiency.
What revive Sulige gas field wide popularization and application is slip-type underground throttle, this restriction choke be rely on the sealing of slips locking, packing element, valve joins a kind of downhole tool producing and realize pit shaft natural gas reducing pressure by regulating flow, and complete restriction choke by piano wire and throw in, set and the underground work such as salvaging.
And apply at present 2
7/
8" and 2
3/
8" tubing slip formula underground throttle device locking mechanism is the 3 slips compositions adopting profile of tooth, material, processing technology identical, relies on pressure reduction to make slips and tube inner wall produce active force to reach fixing.But along with the increase of tubing string caliber, slip-type underground throttle sealing area increases, it sets the pressure reduction that consequence is subject to and also increases, corresponding when salvaging the deblocking power of slips also increase, cause salvaging difficulty, even down-hole accident can occur.Therefore, in order to ensure 4
1/
2" input of tubing string downhole choke device, salvage successfully, again need research and develop the locking mechanism that a kind of major diameter restriction choke can set easy deblocking, with the Production requirement of satisfied Soviet Union Sulige gas field " volume fracturing " gas well.
Utility model content
The purpose of this utility model is to provide a kind of locking mechanism of major diameter restriction choke, overcomes the conventional locking mechanism of major diameter slip-type underground throttle in prior art and causes greatly restriction choke to be difficult to resolve the problem of envelope because bearing pressure reduction.
For this reason, the locking mechanism of a kind of major diameter restriction choke that the utility model provides, comprises restriction choke body, also comprises fishing neck, light face slips and two slips with tooth; Described fishing neck is socketed on the outer wall of restriction choke body upper end, and it is radially evenly provided with three grooves, three slip grooves are radially evenly distributed with in the middle of described restriction choke body, the upper end of described light face slips and two slips with tooth is separately fixed in three grooves of fishing neck, light face slips and two slips with tooth are arranged at restriction choke body, and are fixed in three slip grooves of restriction choke body.
Above-mentioned light face slips and two slips with tooth are fixed by slips hoop and restriction choke body.
Fixed by pin between above-mentioned slips hoop and restriction choke body.
Above-mentioned fishing neck is cylindrical shape, and its upper and lower side is equipped with boss, has chamfering outside the boss of upper end, and boss inside in lower end is recessed sky.
Outside the boss of above-mentioned fishing neck upper end, chamfering is 30 °
Above-mentioned light face slips is segment shape, and lower end outer wall is light face, and inwall has inclined-plane.
Above-mentioned slips with tooth is segment shape, and lower end outer wall has slip insert, and inwall has inclined-plane.
The gradient on the length of above-mentioned light face slips and slips with tooth, width and lower end inner wall inclined-plane is all identical.
Cylindric cone seat is socketed with outside above-mentioned restriction choke body lower end surface.
Above-mentioned cone seat outer wall is taper seat, and the gradient of its taper seat is identical with the gradient on slips lower end inner wall inclined-plane with tooth with light face slips.
The beneficial effects of the utility model: the locking mechanism of this major diameter restriction choke that the utility model provides constitutes a kind of asymmetric major diameter restriction choke locking mechanism due to light face slips and two slips with tooth, upwards jarring time face slips and slips with tooth is made to keep balance, move down relative to the cone seat of major diameter restriction choke body lower end and all parts of connecting therewith, and it is stuck in tube inner wall, be conducive to locking mechanism to set, and when major diameter restriction choke is salvaged by steel wire operation, downward jarring releasing, due to light face slips and tube inner wall zerofriction force, light face slips loosens and causes the balance of locking mechanism to destroy, be conducive to locking mechanism deblocking, thus solve the problem that major diameter restriction choke is difficult to resolve envelope, improve its fishing success ratio, avoid the generation of down-hole accident.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of the locking mechanism of the utility model major diameter restriction choke.
Fig. 2 is light face slips structural representation in the locking mechanism of the utility model major diameter restriction choke.
Fig. 3 is slips structural representation with tooth in the locking mechanism of the utility model major diameter restriction choke.
Fig. 4 is the structural representation of restriction choke body in the locking mechanism of the utility model major diameter restriction choke.
Description of reference numerals: 1, fishing neck; 2, slips hoop; 3, light face slips; 4, slips with tooth; 5, restriction choke body; 6, groove; 7, slip groove; 8, boss; 9, chamfering; 10, seat is bored.
Detailed description of the invention
Embodiment 1:
Restriction choke is caused greatly to be difficult to resolve the problem of envelope to overcome the conventional locking mechanism of major diameter slip-type underground throttle in prior art because bearing pressure reduction, present embodiments provide a kind of locking mechanism of major diameter restriction choke as shown in Figure 1, comprise restriction choke body 5, also comprise fishing neck 1, light face slips 3 and two slips 4 with tooth;
Described fishing neck 1 is socketed on the outer wall of restriction choke body 5 upper end, and it is radially evenly provided with three grooves 6, three slip grooves 7 are radially evenly distributed with in the middle of described restriction choke body 5, the upper end of described light face slips 3 and two slips 4 with tooth is separately fixed in three grooves 6 of fishing neck 1, light face slips 3 and two slips 4 with tooth are arranged on restriction choke body 5, and are fixed in three slip grooves 7 of restriction choke body 5.
And wherein, described light face slips 3 and two slips 4 with tooth are fixed by slips hoop 2 and restriction choke body 5; Fixed by pin between described slips hoop 2 and restriction choke body 5, slips hoop 2 makes light face slips 3 and two slips 4 with tooth be fixed in three slip grooves 7 of restriction choke body 5, is not operationally separated with restriction choke body 5.
Fishing neck 1 is cylindrical shape, and its upper and lower side is equipped with boss 8, have chamfering 9 outside upper end boss 8, lower end boss 8 inside is recessed sky, and three grooves 6 radial direction 120 ° on the boss of lower end for fixed light face slips 3 and two slips 4 with tooth on described fishing neck 1 is symmetrical; Outside described fishing neck 1 upper end boss 8, chamfering 9 is 30 °.
As shown in Figure 2, described light face slips 3 is segment shape, and its upper end is provided with boss, and fix with the groove 6 of fishing neck 1, light face slips 3 lower end outer wall is light face, and inwall has inclined-plane.
As shown in Figure 3, described slips 4 with tooth is segment shape, and its upper end is provided with boss, and fix with the groove 6 of fishing neck 1, slips 4 lower end outer wall with tooth has slip insert, and inwall has inclined-plane.
And the gradient on the length of described light face slips 3 and slips 4 with tooth, width and lower end inner wall inclined-plane is all identical, thus ensure that light face slips (3) and slips with tooth (4) keep when locking mechanism sets balancing.
As shown in Figure 4, cylindric cone seat 10 is socketed with outside described restriction choke body 5 lower end surface; Described cone seat 10 outer wall is taper seat, and the gradient of its taper seat is identical with the gradient on slips 4 lower end inner wall inclined-plane with tooth with light face slips 3, and cone seat inwall is provided with step.
Light face slips 3 and two slips 4 with tooth form asymmetric major diameter restriction choke locking mechanism, when major diameter restriction choke is thrown in by steel wire operation, when upwards jarring time face slips 3 and slips with tooth 4 keep balance, move down relative to the cone seat of major diameter restriction choke body 5 lower end and all parts of connecting therewith, and be stuck in tube inner wall, thus be conducive to locking mechanism and set; When major diameter restriction choke is salvaged by steel wire operation, downward jarring releasing, due to light face slips 3 and tube inner wall zerofriction force, then light face slips 3 loosens and causes the balance of locking mechanism to destroy, be conducive to locking mechanism deblocking, thus solve the problem that major diameter restriction choke is difficult to resolve envelope, improve its fishing success ratio, avoid the generation of down-hole accident.
Embodiment 2:
On the basis of embodiment 1, set and deblocking for the major diameter underground throttle device of a bite 4.5in oil pipe gas well, the utility model is described in further detail.
(1) the setting of locking mechanism
The input fishing of major diameter underground throttle device has been come by piano wire operation.During input, the dispenser of major diameter underground throttle device is connected with steel wire tool string, and this instrument is transferred to design attitude by gas production wellhead, steel wire is carried slowly, light face slips 3 and slips 4 with tooth are moved down relative to the cone seat of large diameter restriction choke body 5 lower end surface and all parts of being connected therewith, and stuck in tube inner wall; Steel wire is carried in continuation, cuts off the pin on dispenser, and trip out outside pit shaft with steel wire tool string, major diameter underground throttle device locking mechanism sets successfully.
(2) deblocking of locking mechanism
Blind hammer is connected with steel wire tool string, transferred to major diameter underground throttle device setting position and jarring downwards by gas production wellhead, large diameter restriction choke body 5 moves down relative to the cone seat of its lower end surface and cuts off salvaging pin, thus light face slips 3 and slips with tooth 4 depart from the cone seat of major diameter restriction choke body 5 lower end surface, due to light face slips 3 and tube inner wall zerofriction force, then light face slips 3 loosens and causes the balance of locking mechanism to destroy, thus the locking mechanism unfreezing of major diameter underground throttle device success.Blind hammer is changed into the special fishing socket of major diameter underground throttle device again to go into the well, under hit tool string and make special fishing socket arrest fishing neck 1, above carry tool string and trip out outside pit shaft, major diameter restriction choke is salvaged successfully.
In sum, the locking mechanism of this major diameter restriction choke that the utility model provides makes full use of the asymmetrical design of light face slips and slips with tooth, when light face slips sets, destruction of balance when maintenance balance, unfreezing, solves the problem that major diameter underground throttle device is difficult to resolve envelope.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (10)
1. a locking mechanism for major diameter restriction choke, comprises restriction choke body (5), it is characterized in that: also comprise fishing neck (1), light face slips (3) and two slips with tooth (4);
Described fishing neck (1) is socketed on the outer wall of restriction choke body (5) upper end, and fishing neck (1) is radially evenly provided with three grooves (6), three slip grooves (7) are radially evenly distributed with in the middle of described restriction choke body (5), the upper end of described light face slips (3) and two slips with tooth (4) is separately fixed in three grooves (6) of fishing neck (1), light face slips (3) and two slips with tooth (4) are arranged on restriction choke body (5), and be fixed in three slip grooves (7) of restriction choke body (5).
2. the locking mechanism of major diameter restriction choke as claimed in claim 1, is characterized in that: described light face slips (3) and two slips with tooth (4) are fixed by slips hoop (2) and restriction choke body (5).
3. the locking mechanism of major diameter restriction choke as claimed in claim 2, be is characterized in that: fixed by pin between described slips hoop (2) and restriction choke body (5).
4. the locking mechanism of major diameter restriction choke as claimed in claim 1, it is characterized in that: described fishing neck (1) is cylindrical shape, and its upper and lower side is equipped with boss (8), there is chamfering (9) in upper end boss (8) outside, and lower end boss (8) inside is recessed sky.
5. the locking mechanism of major diameter restriction choke as claimed in claim 4, is characterized in that: outside the boss of described fishing neck (1) upper end, chamfering is 30 °.
6. the locking mechanism of major diameter restriction choke as claimed in claim 1, is characterized in that: described light face slips (3) is segment shape, and lower end outer wall is light face, and inwall has inclined-plane.
7. the locking mechanism of major diameter restriction choke as claimed in claim 1, is characterized in that: described slips with tooth (4) is segment shape, and lower end outer wall has slip insert, and inwall has inclined-plane.
8. the locking mechanism of the major diameter restriction choke as described in claim 1 or 6 or 7, is characterized in that: the gradient on the length of described light face slips (3) and slips with tooth (4), width and lower end inner wall inclined-plane is all identical.
9. the locking mechanism of major diameter restriction choke as claimed in claim 1, is characterized in that: be socketed with cylindric cone seat (10) outside described restriction choke body (5) lower end surface.
10. the locking mechanism of major diameter restriction choke as claimed in claim 9, it is characterized in that: described cone seat (10) outer wall is taper seat, and the gradient of its taper seat is identical with the gradient on slips with tooth (4) lower end inner wall inclined-plane with light face slips (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672427.1U CN204371261U (en) | 2014-11-12 | 2014-11-12 | A kind of locking mechanism of major diameter restriction choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672427.1U CN204371261U (en) | 2014-11-12 | 2014-11-12 | A kind of locking mechanism of major diameter restriction choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371261U true CN204371261U (en) | 2015-06-03 |
Family
ID=53327490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420672427.1U Expired - Fee Related CN204371261U (en) | 2014-11-12 | 2014-11-12 | A kind of locking mechanism of major diameter restriction choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358550A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter throttling device |
| CN111980612A (en) * | 2020-09-02 | 2020-11-24 | 西安石油大学 | Slip mechanism for downhole choke |
-
2014
- 2014-11-12 CN CN201420672427.1U patent/CN204371261U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358550A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter throttling device |
| CN104358550B (en) * | 2014-11-12 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of locking mechanism of major diameter flow controller |
| CN111980612A (en) * | 2020-09-02 | 2020-11-24 | 西安石油大学 | Slip mechanism for downhole choke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150603 |