CN108505951A - Locking device - Google Patents
Locking device Download PDFInfo
- Publication number
- CN108505951A CN108505951A CN201710098683.2A CN201710098683A CN108505951A CN 108505951 A CN108505951 A CN 108505951A CN 201710098683 A CN201710098683 A CN 201710098683A CN 108505951 A CN108505951 A CN 108505951A
- Authority
- CN
- China
- Prior art keywords
- holding tank
- tubing string
- movable block
- locking device
- outer tubing
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 the boreholes or wells
Abstract
The present invention relates to a kind of locking devices,Including outer tubing string,It is set in the interior tubing string of the inside of the outer tubing string,And the movable block between the outer tubing string and interior tubing string is set,The fixation holding tank for accommodating the movable block is configured on one in said inner tube column and outer tubing string,The first holding tank and the second holding tank are configured on another in said inner tube column and outer tubing string,Wherein,In the first state,First holding tank is with fixed holding tank alignment relative to surround the movable block wherein,The movable block can be engaged by clamping with first holding tank to prevent said inner tube column and the outer tubing string from relatively moving in the axial direction,In the second condition,Second holding tank is with fixed holding tank alignment relative to surround the movable block wherein,The movable block can be slidably matched with second holding tank to allow said inner tube column and the outer tubing string to relatively move in the axial direction.The stability of this locking device is high.
Description
Technical field
The present invention relates to oil gas well cementing operation technical field of construction, more particularly to a kind of locking device.
Background technology
During underground work, in order to carry out operation, it will usually need that locking device is arranged.Such as in a kind of state
Under, locking device can prevent two components (for example, inside and outside tubing string) therein from relatively moving in the direction indicated, and
Under another state, locking device allows two components therein to relatively move in the direction indicated.For example, for well
Under operation of giving up for, usually realized by the axially opposing movement of inside and outside tubing string.
However, in the prior art, locking device is typically to be realized by hydraulic technique.This is for locking device sheet
Structural strength, part processing precision and accuracy of assembly of body etc. have very high requirement.Once the structure of locking device goes out
Show problem and be unable to reach the high request, then locking device will become very unstable, is easy to solve in the case that unexpected
Except lock-out state, and the mutual changing of the relative positions of inside and outside tubing string is allowed even to be mutually disengaged, or is easy the shape that can not unlock because blocking
State.For underground work, this is very serious problem, and can seriously affect the progress of follow-up work.
Therefore, it is necessary to a kind of locking devices that stability is high.
Invention content
In view of the above-mentioned problems, the present invention proposes a kind of locking device that stability is high.
According to the invention it is proposed that a kind of locking device, including outer tubing string, it is set in the inner tube of the inside of the outer tubing string
Column, and the movable block that is arranged between the outer tubing string and interior tubing string, a upper structure in said inner tube column and outer tubing string
The fixation holding tank for accommodating the movable block is made, the first receiving is configured on another in said inner tube column and outer tubing string
Slot and the second holding tank, wherein in the first state, first holding tank is with fixed holding tank alignment relative to wrap wherein
The movable block is enclosed, the movable block can be engaged by clamping with first holding tank to prevent said inner tube column and the outer tubing string
It relatively moves in the axial direction, in the second condition, second holding tank is with fixed holding tank alignment relative with wherein
The movable block is surrounded, the movable block can be slidably matched with second holding tank to allow said inner tube column and the outer tube
Column relatively moves in the axial direction.
By above-mentioned locking device, outer tube can be realized by the cooperation of movable block and the first holding tank and the second holding tank
Locking or unlocking (that is, can relatively move) between column and interior tubing string.The locking device of this set is by simply coordinating i.e.
Can be achieved its function, and therefore assembly of all parts itself between all parts without necessarily achieving very strict accurate water
It is flat.The high stability of locking device work as a result, can act at the time of specific with smooth according to the needs of users
Realize its function.
In one embodiment, the first holding tank and second holding tank are arranged in the circumferential, pass through the outer tubing string
Relative rotation between said inner tube column can be realized from first state to the second state.
In one embodiment, the first holding tank and second holding tank are spaced from each other in the circumferential.
In one embodiment, it is provided with elastic component between the movable block and the bottom surface of the fixed holding tank.
In one embodiment, have can be with the corresponding Slideslip of first holding tank for the first side structure of the movable block
The side sliding bevel of cooperation.
In one embodiment, the first side of movable block is also configured with to be clamped with the respective side of second holding tank and match
The side clamping portion of conjunction, the side clamping portion is relative to the side sliding bevel closer to the bottom of the fixed holding tank
Face, wherein the respective side of second holding tank is deeper compared with the respective side of first holding tank.
In one embodiment, the upstream end of movable block, which is configured with, to be slidably matched with the upstream end of second holding tank
Upstream sliding bevel and/or the upstream end of second holding tank be configured with and be slidably matched with the upstream end of the movable block
Upstream lead-in chamfered.
In one embodiment, locking device is also configured with releasing gadget, and the releasing gadget locks in the first state
And it realizes give up in the second condition.
In one embodiment, the axial length of the first holding tank is less than the axial length of second holding tank, described
Holding tank can be slidable in the axial direction in second holding tank, and in the second condition, the releasing gadget is in response to described
Movable block slides in second holding tank and realizes and give up.
In one embodiment, the upstream end of first holding tank is aligned with the upstream end of second holding tank, institute
The downstream for stating the second holding tank more downstream extends relative to the downstream of first holding tank, in the second condition, institute
Releasing gadget is stated to slide axially downstream in the holding tank in response to the movable block and realize and give up.
Compared with the prior art, the advantages of the present invention are as follows：By above-mentioned locking device, can be held by movable block and first
Locking or unlocking (that is, can relatively move) between outer tubing string and interior tubing string is realized in the cooperation of slot and the second holding tank received.This
Kind setting locking device its function can be realized by simply coordinating, and therefore all parts itself between all parts
Assembly without necessarily achieving very strict accurate level.The high stability of locking device work as a result, can be according to user
Needs and at the time of specific action smoothly to realize its function.
Description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is a kind of structural schematic diagram of one embodiment that locking device according to the present invention is under state；
Fig. 2 is the structural schematic diagram that the locking device in Fig. 1 is under another state；
Fig. 3 is the cross-sectional view of the locking device in Fig. 1；
Fig. 4 is the cross-sectional view of the locking device in Fig. 2.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not according to actual ratio.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 and Fig. 2 schematically shows one embodiment of locking device 1 according to the present invention.
Locking device 1 includes interior tubing string 10 and outer tubing string 20, and interior tubing string 10 is set in the inside of outer tubing string 20.For locking
For device 1, there are two states, i.e. first state and the second state for tool.In the first state, interior tubing string 10 and outer tubing string 20
Locking, and thus cannot relatively move in the axial direction.In the second condition, interior tubing string 10 and outer tubing string 20 unlock,
And thus, it is possible to relatively move in the axial direction relative to each other.
In order to realize that above-mentioned first state and the second state, locking device 1 are configured with such as lower structure.
Locking device 1 includes movable block 30, fixed holding tank 11, the first holding tank 21 and the second holding tank 22.Wherein, exist
Under first state, as shown in Figure 1, the opening alignment relative of 11 and first holding tank 21 of fixed holding tank, is accommodated with surrounding to be formed
Chamber, movable block 30 is contained in the accommodating chamber and is engaged by clamping in the axial direction with the first holding tank 21, so that 10 He of interior tubing string
Outer tubing string 20 is fixed in the axial direction.Preferably, the upstream end and downstream of the first holding tank 21 are engaged by clamping with movable block 30,
To either above carry or transfer interior tubing string 10, interior tubing string 10 and outer tubing string 20 can all be fixed in the axial direction.
In the second condition, as shown in Fig. 2, fixing the opening alignment relative of 11 and second holding tank 22 of holding tank, with packet
It encloses to form accommodating chamber, movable block 30 is contained in the accommodating chamber and is slidably matched in the axial direction with the second holding tank 22, so that interior
Tubing string 10 and outer tubing string 20 can relatively move in the axial direction.
In one embodiment, the upstream end of movable block 30 can construct upstream sliding bevel, the upstream sliding bevel and
The upstream end of two holding tanks 22 is slidably matched.Additionally or alternatively, the upstream end of the second holding tank 22 may be configured with upstream and draw
Guiding incline, the upstream lead-in chamfered and the upstream end of movable block 30 are slidably matched.It should be understood that in the first holding tank 22
Upstream end be then not provided with lead-in chamfered or similar structure, but can be arranged and hinder the knot that is axially moveable of movable block 30
Structure.
It should be understood that movable block 30 itself can have certain elasticity to hold with the first holding tank 21 and second to realize
Receive being respectively cooperating with of slot 22.Preferably, it is provided with elastic component 40 between movable block 30 and the bottom surface of fixed holding tank 11, such as
For helical spring.In this case, movable block 30 is as rigidity, to ensure that it is accommodated with the first holding tank 21 and second
The stability that slot 22 coordinates.
In the case where being provided with elastic component 40, hold when movable block 30 can be arrived to the first holding tank 21 and second respectively
It receives on the bottom wall of slot 22, is achieved in being sufficiently engaged with for movable block 30 and the first holding tank 21 and the second holding tank 22.This
In the case of, the upstream end of movable block 30 is preferably configured with and can be clamped with the upstream that the upstream end of the first holding tank 21 is engaged by clamping
Portion's (plane for example, extended in a radial direction), the upstream clamping portion is for the sliding bevel of upstream closer to fixation
Holding tank 11.In addition, the upstream end of the first holding tank 21 is deeper than the upstream end of the second holding tank.Thus one, work as movable block
30 in the first holding tank 21 when, upstream sliding bevel can coordinate with the upstream end of the first holding tank 21.And work as movable block
30 in the second holding tank 22 when, movable block 30 will be extended further into the second holding tank 22, to its upstream clamping portion with
The upstream end of second holding tank 22 coordinates.
In a preferred embodiment, elastic component 40 links together movable block 30 and fixed holding tank 11.Thus
It can ensure that movable block 30 is in always in fixed holding tank 11, to improve the stability of locking device 1.In addition, in inner tube
After column 10 is detached with outer tubing string 20, movable block 30 can above be proposed recycling with interior tubing string 10.
Preferably, as shown in Figure 3 and Figure 4, the first holding tank 21 and the second holding tank 22 are arranged in the circumferential.To lead to
It crosses to carry out rotating inner tube column 10 relative to outer tubing string 20 movable block 30 can be realized and enters the second holding tank from the first holding tank 21
In 22, it is achieved in from first state to the second state.
First holding tank 21 and the second holding tank 22 can be disposed adjacent interconnectedly, also can be as shown in Figure 3 and Figure 4
It is spaced apart setting like that.
In addition, as shown in Figure 3 and Figure 4, the first side of movable block 30 may be configured with side sliding bevel 31, side sliding
Inclined-plane 31 can be slidably matched with the respective side of the first holding tank 21.Additionally or alternatively, this of the first holding tank 21 is right
Side is answered to be provided with for the side lead-in chamfered 211 with the cooperation of the first Slideslip of movable block 30.As a result, as shown in Figure 3
In embodiment, when interior tubing string 10 rotates counterclockwise relative to outer tubing string 20, movable block 30 can easily leave the first holding tank
21 and enter the second holding tank.It should be understood that the other side of the corresponding side of the second holding tank 22, the second holding tank 22 and
The other side of first holding tank 21 is not provided with the side lead-in chamfered or similar structure, but promotion and movable block can be arranged
30 other structures being engaged by clamping.So, when interior tubing string 10 is rotated in a clockwise direction, outer tubing string 20 can be with interior tubing string
10 rotate together.This set enables improves displacement efficiency of cement slurry when tubing string (pipe string) G.I.H by rotating, and
It can be by rotating come unblocking.
Preferably, as shown in Fig. 2, the first side of movable block 30 is also configured with to be clamped with the respective side of the second holding tank 22
The side clamping portion 32 of cooperation, the side clamping portion 32 is relative to side sliding bevel 31 closer to the bottom of fixed holding tank 11
Face.Enable the respective side of the second holding tank 22 deeper than the respective side of the first holding tank.It is accommodated as a result, when movable block 30 is in first
When in slot 21, side sliding bevel 31 can be slidably matched with the respective side of the first holding tank 21.And when movable block 30 is in the
When in two holding tanks 22, side clamping portion 32 can be engaged by clamping with the respective side of the second holding tank 22.
Locking device 1 may be produced that this structure：The axial length of first holding tank 21 is arranged to that movable block be able to be accommodated
30, thus when movable block 30 is in the first holding tank 21, it cannot slide axially in the first holding tank 21, and then keep away
Exempt from interior tubing string 10 to move in the axial direction relative to outer tubing string 20；Meanwhile second holding tank 21 axial length than first hold
Receive slot 21 axial length it is long, to when movable block 30 is in the second holding tank 22, can in the second holding tank 22 edge
Circumferential direction is slided, and interior tubing string 10 is allowed for be moved in the axial direction relative to outer tubing string 20.
In Fig. 1 and embodiment shown in Fig. 2, the upstream end of the first holding tank 21 and the second holding tank 22 is aligned, and the
The downstream of two holding tanks 22 more downstream extends relative to the downstream of the first holding tank 21.As a result, when movable block 30 enters
After in the second holding tank 22, interior tubing string 10 can be relative to 20 downward downstream of outer tubing string.
For example, including being moved down relative to outer tubing string 20 by interior tubing string 10 and actuating giving up of giving up in locking device 1
When mechanism, above-mentioned construction is especially advantageous.
As shown in Figure 1, releasing gadget includes the sliding sleeve 50, Yi Jicong being set between interior tubing string 10 and outer tubing string 20
The claw 60 that the sliding sleeve 50 downstream extends.At this point, interior tubing string 10, outer tubing string 20 are solid in the axial direction with sliding sleeve 50
It is fixed.As a result, in the first state, claw 60 is arrived to by interior tubing string 10 in the recess 23 of outer tubing string.In this case, either
Tubing string 10 in above carrying interior tubing string 10 or transferring, the active force all can pass to outer tubing string 20 by claw 60, with further true
Tubing string 10 is fixed in the axial direction with outer tubing string 20 in protecting, and realizes that outer tubing string 20 moves together with interior tubing string 10.In addition,
Clamp spring 70 is also arranged between sliding sleeve 50 and interior tubing string 10, clamp spring 70 is solid in the axial direction relative to sliding sleeve 50
It is fixed.The clamp spring 70 is not snapped onto in the first state in the locating slot of interior tubing string 10.
And in the second condition, interior tubing string 10 is downstream moved to and no longer resists claw 60, and with interior tubing string 10
Mobile, clamp spring 70 can enter in the locating slot of interior tubing string 10.At this point, sliding sleeve 50 and claw 60 are solid relative to interior tubing string 10
It is fixed.Then interior tubing string 10 is above carried, you can while sliding sleeve 50 and claw 60 are above carried, so that claw 60 is left recessed on outer tubing string 20
23 are fallen into, is thus given up to realize.
It should be understood that it is upper carry interior tubing string 10 during, pass through the upstream end of movable block 30 and the second holding tank
22 upstream end is slidably matched, and movable block 30 can be made to leave the second holding tank 22, to keep interior tubing string 10 and outer tubing string 20 complete
It is fully separating to open.
It can be set it is to be further understood that releasing gadget also may be configured to any other structure appropriate or locking device 1
It is equipped with other fit structures.
In addition, as needed, also fixed holding tank 11 can be arranged on outer tubing string 20, and by the first holding tank 21 and the
Two holding tanks 22 are arranged on interior tubing string 10.
The course of work of locking device 1 is described in detail below.
In 1 G.I.H of locking device, it is in first state.As shown in Figure 1, at this point, movable block 30 is in first
It in holding tank 21, and is engaged by clamping in the axial direction with the first holding tank 21, so that interior tubing string 10 and outer tubing string 20 are in axial direction
Upper fixation.In the case where being provided with releasing gadget, claw 60 is arrived to by interior tubing string 10 in the recess 23 of outer tubing string 20, with into one
Step makes interior tubing string 10 be locked in the axial direction with outer tubing string 20.During tripping in, it can rotate clockwise (based on as shown in Figure 3
Structure) interior tubing string 10, so that tripping in process is more smooth.
After locking device 1 is lowered into scheduled position, movable block 30 can be enabled from by rotating counterclockwise interior tubing string 10
One holding tank 21 enters the second holding tank 22.Tubing string 10 in transferring at this time, can enable interior tubing string 10 downstream be moved relative to outer tubing string
It is dynamic.At this point, claw 60 is no longer against in the recess 23 of outer tubing string 20 by interior tubing string 10.Then, it is upper carry interior tubing string 10 when, card
Pawl 60 will be detached from out of recess 23.Interior tubing string 10 is further above carried, movable block 30 can be enabled to be separated with the second holding tank 22.By
This, realizes that interior tubing string 10 is kept completely separate with outer tubing string 20.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited in texts
Disclosed in specific embodiment, but include all technical solutions fallen within the scope of the appended claims.
Claims (10)
1. a kind of locking device, including outer tubing string are set in the interior tubing string of the inside of the outer tubing string, and setting described outer
Movable block between tubing string and interior tubing string,
The fixation holding tank for accommodating the movable block is configured on one in said inner tube column and outer tubing string, in said inner tube
The first holding tank and the second holding tank are configured on another in column and outer tubing string,
Wherein, in the first state, first holding tank and fixed holding tank alignment relative to surround the activity wherein
Block, the movable block can be engaged by clamping with first holding tank to prevent said inner tube column and the outer tubing string in the axial direction
Upper relative movement,
In the second condition, second holding tank and fixed holding tank alignment relative to surround the movable block, institute wherein
Stating movable block can be slidably matched with second holding tank to allow said inner tube column and the outer tubing string phase in the axial direction
To movement.
2. locking device according to claim 1, which is characterized in that first holding tank and second holding tank exist
It arranges in circumferential direction, can be realized from first state to the second shape by the relative rotation between the outer tubing string and said inner tube column
State.
3. locking device according to claim 2, which is characterized in that first holding tank and second holding tank exist
It is spaced from each other in circumferential direction.
4. the locking device according to any one of Claim 1-3, which is characterized in that the movable block with it is described solid
Determine to be provided with elastic component between the bottom surface of holding tank.
5. locking device according to any one of claims 1 to 4, which is characterized in that the first side structure of the movable block
Make the side sliding bevel that can be slidably matched with the respective side of first holding tank.
6. locking device according to claim 5, which is characterized in that the first side of the movable block is also configured with can be with institute
The side clamping portion that the respective side of the second holding tank is engaged by clamping is stated, the side clamping portion is relative to the side sliding bevel
Closer to the bottom surface of the fixed holding tank,
Wherein, the respective side of second holding tank is deeper compared with the respective side of first holding tank.
7. the locking device according to any one of claim 1 to 6, which is characterized in that the upstream end structure of the movable block
The upstream sliding bevel that can be slidably matched with the upstream end of second holding tank is made, and/or
The upstream end of second holding tank is configured with the upstream lead-in chamfered being slidably matched with the upstream end of the movable block.
8. the locking device according to any one of claim 1 to 7, which is characterized in that the locking device is also configured with
Releasing gadget, the releasing gadget are locked and are realized in the second condition and give up in the first state.
9. locking device according to claim 8, which is characterized in that the axial length of first holding tank is less than described
The axial length of second holding tank, the holding tank can be slidable in the axial direction in second holding tank, in the second state
Under, the releasing gadget slides in second holding tank in response to the movable block and realizes and give up.
10. locking device according to claim 9, which is characterized in that the upstream end of first holding tank and described the
The upstream end of two holding tanks is aligned, and the downstream of second holding tank is more downward relative to the downstream of first holding tank
Trip extends,
In the second condition, the releasing gadget slided axially downstream in the holding tank in response to the movable block and
Realization is given up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098683.2A CN108505951B (en) | 2017-02-23 | 2017-02-23 | Locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098683.2A CN108505951B (en) | 2017-02-23 | 2017-02-23 | Locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108505951A true CN108505951A (en) | 2018-09-07 |
| CN108505951B CN108505951B (en) | 2020-07-03 |
Family
ID=63372780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710098683.2A Active CN108505951B (en) | 2017-02-23 | 2017-02-23 | Locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108505951B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4884632A (en) * | 1986-03-07 | 1989-12-05 | Halliburton Logging Services, Inc. | Side entry sub well logging apparatus and method |
| US4915175A (en) * | 1989-02-21 | 1990-04-10 | Otis Engineering Corporation | Well flow device |
| CN2120174U (en) * | 1992-05-22 | 1992-10-28 | 大港石油管理局第一采油厂 | Plain cunthread, pumping rod and link |
| CN102943642A (en) * | 2012-12-08 | 2013-02-27 | 吉林大学 | Lifting-free borehole bottom rope freezing coring drilling tool and method |
| CN104047560A (en) * | 2013-03-15 | 2014-09-17 | 中国石油天然气集团公司 | Underground remote control locking device and remote control locking method |
-
2017
- 2017-02-23 CN CN201710098683.2A patent/CN108505951B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4884632A (en) * | 1986-03-07 | 1989-12-05 | Halliburton Logging Services, Inc. | Side entry sub well logging apparatus and method |
| US4915175A (en) * | 1989-02-21 | 1990-04-10 | Otis Engineering Corporation | Well flow device |
| CN2120174U (en) * | 1992-05-22 | 1992-10-28 | 大港石油管理局第一采油厂 | Plain cunthread, pumping rod and link |
| CN102943642A (en) * | 2012-12-08 | 2013-02-27 | 吉林大学 | Lifting-free borehole bottom rope freezing coring drilling tool and method |
| CN104047560A (en) * | 2013-03-15 | 2014-09-17 | 中国石油天然气集团公司 | Underground remote control locking device and remote control locking method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108505951B (en) | 2020-07-03 |
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