CN104358550B - Clamping mechanism of large-diameter restrictor - Google Patents
Clamping mechanism of large-diameter restrictor Download PDFInfo
- Publication number
- CN104358550B CN104358550B CN201410634184.7A CN201410634184A CN104358550B CN 104358550 B CN104358550 B CN 104358550B CN 201410634184 A CN201410634184 A CN 201410634184A CN 104358550 B CN104358550 B CN 104358550B
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- China
- Prior art keywords
- slips
- flow controller
- smooth surface
- tooth
- wall
- 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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- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000006378 damage Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 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
- 230000006837 decompression Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 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
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Flow Control (AREA)
Abstract
The invention belongs to the technical field of oil field gas production, and particularly provides a clamping mechanism of a large-diameter restrictor, which comprises a restrictor body, a fishing neck, a smooth surface slip and two slips with teeth; the fishing neck is sleeved on the outer wall of the upper end of the throttle body, three grooves are uniformly formed in the throttle body along the radial direction, three slip grooves are uniformly distributed in the middle of the throttle body along the radial direction, the upper ends of the smooth surface slips and the two toothed slips are fixed in the three grooves of the fishing neck respectively, and the smooth surface slips and the two toothed slips are arranged on the throttle body and fixed in the three slip grooves of the throttle body. The asymmetrical design of the smooth-surface slip and the slip with the teeth is fully utilized, the smooth-surface slip keeps balance when being set and breaks balance when being unlocked, and the problem that the large-diameter underground throttleer is difficult to unseal is solved.
Description
Technical field
The invention belongs to oil field production gas technology field, and in particular to a kind of locking mechanism of major diameter flow controller, it is adaptable to
A kind of in gas exploitation course can set the major diameter flow controller locking mechanism easily unsealed.
Background technology
For well well yield of further improving the standard, Soviet Union's Sulige gas field has carried out " volume fracturing " and has promoted experiment, to increase
Huge discharge, using 41/2" oil pipe is used as pressure break gas production integrated pipe column.Current such well is using well head heating, throttling producer
Formula, production cost is high, management difficulty is big, security risk is big.In view of the ripe application experience of Soviet Union's Sulige gas field downhole choke technology,
Carry out 41/2" the design research and development of tubing string downhole choke device carry out the decompression production of early stage downhole choke, to improve " volume pressure
Split " overall efficiency.
Sulige gas field wide popularization and application of reviving is slip-type underground throttle, and the flow controller is by slips is locking, glue
Cylinder sealing, valve realize a kind of downhole tool of pit shaft natural gas reducing pressure by regulating flow with production, and complete by piano wire section
Underground work is delivered, sets and salvaged etc. to stream device.
And 2 applied at present7/8" and 23/8" tubing clamp tile style underground throttle device locking mechanism be using tooth form, material,
3 slips compositions of processing technology identical, make slips and tube inner wall act power fixed to reach by pressure difference.But with
The increase of tubing string caliber, slip-type underground throttle sealing area increase, its pressure difference born after setting also increases, accordingly beaten
The deblocking power of slips also increases when dragging for, and causes to salvage difficult, or even can occur down-hole accident.Therefore, in order to ensure 41/2" tubing string
The dispensing of downhole choke device, salvage successfully, a kind of major diameter flow controller need to be researched and developed again can set the locking mechanism easily unsealed,
To meet the production requirement of Soviet Union's Sulige gas field " volume fracturing " gas well.
The content of the invention
It is an object of the invention to provide a kind of locking mechanism of major diameter flow controller, to overcome major diameter card in the prior art
Tile style underground throttle device routine locking mechanism causes greatly the problem of flow controller is difficult to resolve envelope because bearing pressure difference.
Therefore, a kind of locking mechanism for major diameter flow controller that the present invention is provided, including flow controller body, in addition to salvage
Neck, smooth surface slips and two slips with tooth；The fishing neck is socketed on the outer wall of flow controller body upper end, and its is radially even
Three grooves are provided with, the flow controller body centre is radially even to be distributed with three slip grooves, the smooth surface slips and two
The upper end of individual slips with tooth is separately fixed in three grooves of fishing neck, and smooth surface slips and two slips with tooth are arranged at throttling
Device body, and be fixed in three slip grooves of flow controller body.
Above-mentioned smooth surface slips and two slips with tooth are fixed by slips hoop with flow controller body.
Fixed between above-mentioned slips hoop and flow controller body by pin.
Above-mentioned fishing neck is cylindrical shape, and its upper and lower side is equipped with boss, and upper end outside the boss has in chamfering, lower end boss
Portion is recessed sky.
Above-mentioned fishing neck upper end outside the boss chamfering is 30 °
Above-mentioned smooth surface slips is segment shape, and lower end outer wall is smooth surface, 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 all same of the length of above-mentioned smooth surface slips and slips with tooth, width and lower end inner wall inclined-plane.
Cylindric cone seat is socketed with outside above-mentioned flow controller body lower end surface.
Above-mentioned cone seat outer wall is circular conical surface, and the gradient and smooth surface slips and slips lower end inner wall inclined-plane with tooth of its circular conical surface
Gradient it is identical.
Beneficial effects of the present invention：The locking mechanism for this major diameter flow controller that the present invention is provided due to smooth surface slips and
Two slips with tooth constitute a kind of asymmetric major diameter flow controller locking mechanism so that smooth surface slips and band during upward jarring
Tooth slips keeps balance, is moved down relative to the cone seat of major diameter flow controller body lower end and all parts being connected with this, and block
Tube inner wall is died from, is conducive to locking mechanism to set, and when major diameter flow controller is salvaged by steel wire operation, shake downwards
Unfreezing is hit, due to smooth surface slips and tube inner wall zerofriction force, smooth surface slips, which loosens, causes the balance of locking mechanism to destroy, favorably
In locking mechanism deblocking, so as to solve the problem of major diameter flow controller is difficult to resolve envelope, its fishing success ratio is improved, it is to avoid well
The generation of lower accident.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of the locking mechanism of major diameter flow controller of the present invention.
Fig. 2 be major diameter flow controller of the present invention locking mechanism in smooth surface slips structural representation.
Fig. 3 be major diameter flow controller of the present invention locking mechanism in slips structural representation with tooth.
Fig. 4 be major diameter flow controller of the present invention locking mechanism in flow controller body structural representation.
Description of reference numerals：1st, fishing neck；2nd, slips hoop；3rd, smooth surface slips；4th, slips with tooth；5th, flow controller body；6、
Groove；7th, slip groove；8th, boss；9th, chamfering；10th, cone seat.
Embodiment
Embodiment 1：
In order to overcome in the prior art the conventional locking mechanism of major diameter slip-type underground throttle cause greatly because bearing pressure difference
The problem of flow controller is difficult to resolve envelope, present embodiments provides a kind of locking mechanism of major diameter flow controller as shown in Figure 1, including section
Flow device body 5, in addition to fishing neck 1, smooth surface slips 3 and two slips 4 with tooth；
The fishing neck 1 is socketed on the upper end outer wall of flow controller body 5, and its it is radially even be provided with three grooves 6,
It is radially even in the middle of the flow controller body 5 to be distributed with three slip grooves 7, the smooth surface slips 3 and two slips 4 with tooth
Upper end is separately fixed in three grooves 6 of fishing neck 1, and smooth surface slips 3 and two slips 4 with tooth are arranged at flow controller body 5
On, and be fixed in three slip grooves 7 of flow controller body 5.
And wherein, the smooth surface slips 3 and two slips 4 with tooth are fixed by slips hoop 2 with flow controller body 5；It is described
Fixed between slips hoop 2 and flow controller body 5 by pin, slips hoop 2 causes smooth surface slips 3 and two slips 4 with tooth to fix
In in three slip grooves 7 of flow controller body 5, do not separated with flow controller body 5 operationally.
Fishing neck 1 is cylindrical shape, and its upper and lower side is equipped with boss 8, and there are chamfering 9, lower end boss 8 in the outside of upper end boss 8
Inside is to be used for three grooves 6 for fixing smooth surface slips 3 and two slips 4 with tooth on recessed sky, the fishing neck 1 in lower end boss
Upper 120 ° of radial direction is symmetrical；The outside chamfering 9 of 1 upper end boss of fishing neck 8 is 30 °.
As shown in Fig. 2 the smooth surface slips 3 is segment shape, its upper end is provided with boss, consolidates with the groove 6 of fishing neck 1
Fixed, the lower end outer wall of smooth surface slips 3 is smooth surface, and inwall has inclined-plane.
As shown in figure 3, the slips with tooth 4 is segment shape, its upper end is provided with boss, consolidates with the groove 6 of fishing neck 1
Fixed, the lower end outer wall of slips 4 with tooth has slip insert, and inwall has inclined-plane.
And the gradient all same of the length of the smooth surface slips 3 and slips with tooth 4, width and lower end inner wall inclined-plane, so that
Ensure that smooth surface slips (3) and slips with tooth (4) keep balance when locking mechanism is set.
As shown in figure 4, being socketed with cylindric cone seat 10 outside the lower end surface of flow controller body 5；The outer wall of cone seat 10
For circular conical surface, and the gradient of its circular conical surface is identical with the gradient on the lower end inner wall inclined-plane of slips 4 with tooth with smooth surface slips 3, in cone seat
Wall is provided with step.
Smooth surface slips 3 and two slips 4 with tooth constitute asymmetric major diameter flow controller locking mechanism, in major diameter throttling
When device is delivered by steel wire operation, when upward jarring, smooth surface slips 3 and slips with tooth 4 keep balance, straight relative to big
The cone seat of the lower end of footpath flow controller body 5 and all parts being connected with this are moved down, and stuck in tube inner wall, so as to be conducive to card
Determine mechanism to set；When major diameter flow controller is salvaged by steel wire operation, downward jarring releasing, due to smooth surface slips 3 with
Tube inner wall zerofriction force, then smooth surface slips 3, which loosens, causes the balance of locking mechanism to destroy, and is conducive to locking mechanism to unseal, from
And the problem of major diameter flow controller is difficult to resolve envelope is solved, improve its fishing success ratio, it is to avoid the generation of down-hole accident.
Embodiment 2：
On the basis of embodiment 1, set using the major diameter underground throttle device of a bite 4.5in oil pipe gas wells and deblocking as
Example, is described in further detail to the present invention.
（1）Locking mechanism is set
The dispensing fishing of major diameter underground throttle device is completed by piano wire operation.During dispensing, with steel wire work
Tool series winding connects the dispenser of major diameter underground throttle device, and this instrument is transferred into design attitude by gas production wellhead, it is slow on
Steel wire is carried, makes smooth surface slips 3 and slips with tooth 4 relative to the cone seat of the lower end surface of flow controller body 5 of major diameter and connects with this
All parts connect are moved down, and stuck in tube inner wall；Steel wire is carried in continuation, the pin on dispenser is cut, and with steel wire work
Tool is strung out outside pit shaft, and major diameter underground throttle device locking mechanism sets success.
（2）The deblocking of locking mechanism
Blind hammer is connected with steel wire tool string, transferred by gas production wellhead to major diameter underground throttle device setting position and downward
Jarring, the flow controller body 5 of major diameter moves down relative to the cone seat of its lower end surface and cuts salvaging pin, so that smooth surface
The cone seat of slips 3 and slips with tooth 4 and the lower end surface of major diameter flow controller body 5 departs from, due to smooth surface slips 3 and tube inner wall
Zerofriction force, then smooth surface slips 3, which loosens, causes the balance of locking mechanism to destroy, so that the locking mechanism of major diameter underground throttle device
Unfreezing success.Blind hammer is changed into the special fishing socket of major diameter underground throttle device and gone into the well again, under hit tool string and make special fishing socket
Fishing neck 1 is arrested, tool string is above carried and rises outside pit shaft, major diameter flow controller is salvaged successfully.
In summary, the locking mechanism for this major diameter flow controller that the present invention is provided makes full use of smooth surface slips and with tooth
The asymmetrical design of slips, destruction of balance when holding balance, unfreezing, solves major diameter underground throttle device when smooth surface slips is set
The problem of being difficult to resolve envelope.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (1)
1. a kind of locking mechanism of major diameter flow controller, including flow controller body (5), it is characterised in that：Also include fishing neck
(1), smooth surface slips (3) and two slips (4) with tooth；The fishing neck (1) is socketed on the outer wall of flow controller body (5) upper end,
It is radially even in the middle of the flow controller body (5) to be distributed with and fishing neck (1) is radially even is provided with three grooves (6)
The upper end of three slip grooves (7), the smooth surface slips (3) and two slips (4) with tooth is separately fixed at three of fishing neck (1)
In groove (6), smooth surface slips (3) and two slips (4) with tooth are arranged on flow controller body (5), and are fixed on flow controller sheet
In three slip grooves (7) of body (5)；The smooth surface slips (3) is segment shape, and lower end outer wall is smooth surface, and inwall has inclined-plane；Institute
Slips with tooth (4) is stated for segment shape, lower end outer wall has slip insert, and inwall has inclined-plane；Flow controller body (5) lower end surface
Cylindric cone seat (10) is socketed with outside；The smooth surface slips (3) and two slips (4) with tooth pass through slips hoop (2) and flow controller
Body (5) is fixed；Fixed between the slips hoop (2) and flow controller body (5) by pin；The fishing neck (1) is
Cylindrical shape, and its upper and lower side is equipped with boss (8), upper end boss (8) outside has inside chamfering (9), lower end boss (8) to be recessed
It is empty；Fishing neck (1) the upper end outside the boss chamfering (9) is 30 °；The length of the smooth surface slips (3) and slips with tooth (4),
The gradient all same of width and lower end inner wall inclined-plane；Cone seat (10) outer wall is circular conical surface, and the gradient and light of its circular conical surface
Face slips (3) is identical with the gradient on slips with tooth (4) lower end inner wall inclined-plane；
Because smooth surface slips and two slips with tooth constitute a kind of asymmetric major diameter flow controller locking mechanism so that upwards
Smooth surface slips and slips with tooth keep balance during jarring, are connected relative to the cone seat of major diameter flow controller body lower end and with this
All parts are moved down, and stuck in tube inner wall, are conducive to locking mechanism to set, and pass through steel wire operation in major diameter flow controller
When being salvaged, downward jarring releasing, due to smooth surface slips and tube inner wall zerofriction force, smooth surface slips, which loosens, causes locking machine
The balance destruction of structure, is conducive to locking mechanism to unseal, so as to solve the problem of major diameter flow controller is difficult to resolve envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634184.7A CN104358550B (en) | 2014-11-12 | 2014-11-12 | Clamping mechanism of large-diameter restrictor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634184.7A CN104358550B (en) | 2014-11-12 | 2014-11-12 | Clamping mechanism of large-diameter restrictor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358550A CN104358550A (en) | 2015-02-18 |
| CN104358550B true CN104358550B (en) | 2017-10-17 |
Family
ID=52525847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410634184.7A Active CN104358550B (en) | 2014-11-12 | 2014-11-12 | Clamping mechanism of large-diameter restrictor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358550B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302554B (en) * | 2019-07-29 | 2023-06-20 | 中国石油化工股份有限公司 | Underground clamping device and tubular column |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419371A (en) * | 1992-11-18 | 1995-05-30 | Cerpraecis Anwendungen Fur Ingenieurkeramik Gmbh | Throttle device, especially for a throttle valve, with throttle cage of ceramic and metal layers |
| CN201326408Y (en) * | 2008-09-17 | 2009-10-14 | 濮阳市太和测试技术有限公司 | 2*** inch gas well downhole choke |
| CN201915869U (en) * | 2010-12-23 | 2011-08-03 | 中国石油天然气股份有限公司 | Slip device with self-locking mechanism |
| CN202338304U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Slip type underground throttle device easy to salvage and capable of knocking off sand prevention cover |
| CN202745835U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Anti-sliding single rubber barrel underground throttling device |
| CN204371261U (en) * | 2014-11-12 | 2015-06-03 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter restrictor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO314701B3 (en) * | 2001-03-20 | 2007-10-08 | Reslink As | Flow control device for throttling flowing fluids in a well |
-
2014
- 2014-11-12 CN CN201410634184.7A patent/CN104358550B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419371A (en) * | 1992-11-18 | 1995-05-30 | Cerpraecis Anwendungen Fur Ingenieurkeramik Gmbh | Throttle device, especially for a throttle valve, with throttle cage of ceramic and metal layers |
| CN201326408Y (en) * | 2008-09-17 | 2009-10-14 | 濮阳市太和测试技术有限公司 | 2*** inch gas well downhole choke |
| CN201915869U (en) * | 2010-12-23 | 2011-08-03 | 中国石油天然气股份有限公司 | Slip device with self-locking mechanism |
| CN202338304U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Slip type underground throttle device easy to salvage and capable of knocking off sand prevention cover |
| CN202745835U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Anti-sliding single rubber barrel underground throttling device |
| CN204371261U (en) * | 2014-11-12 | 2015-06-03 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter restrictor |
Non-Patent Citations (1)
| Title |
|---|
| 不同齿面卡瓦对钻机夹紧力的影响探讨;刘卫亮;《矿业安全与环保》;20070630;第34卷;第81页-第83页 * |
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| Publication number | Publication date |
|---|---|
| CN104358550A (en) | 2015-02-18 |
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