CN104047560B - Down-hole remote-controlled lock locking apparatus and remote control locking method - Google Patents
Down-hole remote-controlled lock locking apparatus and remote control locking method Download PDFInfo
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- CN104047560B CN104047560B CN201310083044.0A CN201310083044A CN104047560B CN 104047560 B CN104047560 B CN 104047560B CN 201310083044 A CN201310083044 A CN 201310083044A CN 104047560 B CN104047560 B CN 104047560B
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Abstract
Down-hole remote-controlled lock locking apparatus and remote control locking method, belong to oil, gas drilling technical field.Body, conciliate on lock barrel by lock body and have by-pass prot；Be installed on inside body by lock body, solve lock barrel and be installed on the outside of body, body with upper shell with threadeding；Slotting in the middle part of body, lock dog is installed in the groove of body, and lock dog and being recessed at of body are upwardly into rare two week；Being had groove in the middle part of lock body, axial section profile of tooth is meshed with lock dog；Unlock and have annular groove inside lower cartridge, match with the inclined-plane boss of lock dog；Unlock sleeve spring to be placed in the annular space solving in lock barrel and body between path portion upper surface, be placed in by the annular space between lock body bottom and body bigger diameter end side by lock body spring；The corresponding positions solving lock barrel and body is equipped with sealing ring.The present invention realizes repeatedly locking and the release of parts.
Description
Technical field
The present invention relates to down-hole remote-controlled lock locking apparatus and remote control locking method.Belong to oil, gas drilling technical field.
Background technology
In the downhole tool of oil drilling designs, a lot of situations all can relate to locking and the release of a certain parts in instrument
Function.The lockable mechanism used in current most of instrument has the disadvantage that some mechanism can not be by the side of ground remote control
Formula carrys out locking and the release of the lockable mechanism in manipulation instrument, is unfavorable for the control of instrument；Some mechanism passes through pin by two
Part is fixed, and when needs separate, increases pressure reduction and cut off pin realization separation by the way of pitching, and this mechanism is only used for
Release lockable mechanism once, it is impossible to reuse, not being suitable for down-hole needs the instrument of many secondary control, and underground working is multiple
Miscellaneous, unexpected impulsive force is also possible to cause pin to be interrupted sometimes, and parts discharge in advance, cause adverse consequences；Some instrument should
Locking and release function, the axial dimension of elastic claw mechanism is realized with Fen Ban elastic claw mechanism or radial piston retaining mechanism
Long, when bearing bigger axial thrust, it may occur that to disengage the phenomenon of release, there is contact in radial piston retaining mechanism
Area is little, and stress is big, the shortcoming easily lost efficacy, and both mechanisms are desirable that and first should first determine the mutually countershaft of two parts
To position, then trigger lock sleeve or radial piston action carries out locking, operate relatively complicated.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides down-hole remote-controlled lock locking apparatus and remote control locking method.
Down-hole remote-controlled lock locking apparatus, by upper shell, by lock body, unlock sleeve spring, solve lock barrel, lock dog, body, locked
Body spring forms；Body, conciliate on lock barrel by lock body and have by-pass prot；It is installed on inside body by lock body, solves lock barrel peace
Be loaded on the outside of body, body with upper shell with threadeding；Slotting in the middle part of body, lock dog is installed in the groove of body, lock dog
Rare two it are upwardly into week with being recessed at of body；Being had groove in the middle part of lock body, axial section profile of tooth is meshed with lock dog；Solve
Lock barrel lower inside has annular groove, matches with the inclined-plane boss of lock dog；Unlock sleeve spring be placed in solution lock barrel with
In body in annular space between path portion upper surface, by lock body spring be placed in by lock body bottom and body bigger diameter end side it
Between annular space in；The corresponding positions solving lock barrel and body is equipped with sealing ring.
There is the saw tooth profile of axial distribution lock dog side, and opposite side has an inclined-plane boss structure, respectively with by lock body and unblock
The contour structure of sleeve is corresponding, and under axial thrust effect, lock dog can move radially.
When by the saw tooth profile of lock body Yu lock dog at a fully engaged time, axially aligned with the by-pass prot on body by lock body；Solve
The boss bottom of lock barrel has by-pass prot to communicate with annular space.
A kind of down-hole remote control locking method, containing following steps:
When normally creeping into, mechanism is in release conditions, when needs lock, increase work discharge capacity to controlling discharge capacity,
Compressed by lock body spring descending under differential pressure action by lock body, until by the step surface phase of the step surface of lock body upper end with upper shell
Contact, is now alignd with the by-pass prot of body by the by-pass prot of lock body, and drilling fluid is flowed into by by-pass prot and unlocks upper cartridge
Annular space, under the effect of inside and outside annulus pressure, unlocks sleeve compresses unblock sleeve spring descending, and the boss of lock dog is unlocking
Departing from groove under the axial thrust of sleeve, to mechanism, center position moves, and is meshed with by the incised groove of lock body；This
Time, revert to normally work discharge capacity, owing to solving lock barrel still by inside and outside annulus pressure effect, although when pressure reduction relatively controls discharge capacity
Reduce, but still the bigger pressure reduction of existence ensures that solving lock barrel can not be repositioned to mechanism's release conditions, so the radial motion of lock dog
Being defined, now mechanism is still within lockup state；
When needs discharge, termination of pumping, the pressure reduction solving lock barrel upper and lower end face does not exists, and is unlocking sleeve spring
Under restoring force effect up, until solve lock barrel upper surface contact with the step surface of upper shell, now solve the annular of lock barrel
Groove is the most corresponding with the boss of lock dog；Meanwhile, by lock body by by the restoring force effect upwards of lock body spring during termination of pumping, at lock dog
With by under the contact of incline plane effect of lock body, the trend of lock dog oriented outer body motion, when the annular groove and the lock that solve lock barrel
The boss of block is axially to lock dog radial outward movement during correspondence, and boss is combined with groove, and mechanism completes release movement.
It is an advantage of the present invention to provide one and can be widely used in downhole tool, can be by the way of ground remote control, it is achieved
The repeatedly locking of parts and release.When normally creeping into, mechanism is in release conditions；When needs lock, increase work
Discharge capacity is to controlling discharge capacity, and trigger mechanism action, action recovers normal discharge capacity after completing, lockable mechanism is in lockup state, when needing
When discharging, termination of pumping, mechanism completes release movement.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, it is possible to be more completely more fully understood that the present invention with
And easily learn the advantage that many of which is adjoint, but accompanying drawing described herein is used for providing a further understanding of the present invention,
Constituting the part of the present invention, the schematic description and description of the present invention is used for explaining the present invention, is not intended that this
Bright improper restriction, such as figure wherein:
Fig. 1 is the present invention overall structure schematic diagram when lockup state.
Fig. 2 is the present invention overall structure schematic diagram when release conditions.
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Detailed description of the invention
Obviously, those skilled in the art belong to the guarantor of the present invention based on the many modifications and variations that spirit of the invention is done
Protect scope.
Embodiment 1: as shown in Figure 1 and Figure 2,
Down-hole remote-controlled lock locking apparatus, by upper shell 1, by lock body 2, unblock sleeve spring 3, solution lock barrel 4, lock dog 5, body
6, formed by lock body spring 7.Body 6, conciliate by lock body 2 and have by-pass prot on lock barrel 4.It is installed in body 6 by lock body 2
Side, solves lock barrel 4 and is installed on the outside of body 6, body 6 with upper shell 1 with threadeding.Slotting in the middle part of body 6, lock dog 5 is pacified
Being loaded in the groove of body 6, lock dog 5 and being recessed at of body 6 are upwardly into rare two week.Groove is had, axially in the middle part of lock body 2
Section profile of tooth is meshed with lock dog 5, and the axial number of teeth is many, then it is little to distribute the axial thrust on each tooth, is favorably improved intensity.
Solve lock barrel 4 lower inside and have annular groove, match with the inclined-plane boss of lock dog 5.Unlock sleeve spring 3 and be placed in solution lock tube
In cylinder 4 and body 6 in annular space between path portion upper surface, it is placed in by lock body 2 bottom big with body 6 by lock body spring 7
In annular space between the end side surface of footpath.Solve lock barrel 4 and be connected sealing ring with the relevant position of body 6.
Down-hole remote control locking method, containing following steps:
When normally creeping into, mechanism is in release conditions, when needs lock, increase work discharge capacity to controlling discharge capacity,
Compressed by lock body spring 7 descending under differential pressure action by lock body 2, until by the step of the step surface of lock body 2 upper end Yu upper shell
Face contacts, and is now alignd with the by-pass prot of body 6 by the by-pass prot of lock body 2, and drilling fluid is flowed into by by-pass prot and solves lock barrel 4
The annular space on top, under the effect of inside and outside annulus pressure, solves lock barrel 4 compression unblock sleeve spring 3 descending, lock dog 5
Boss departs from groove under the axial thrust solving lock barrel 4, and to mechanism, center position moves, and recessed with by the zigzag of lock body 2
Groove is meshed；Now, revert to normally work discharge capacity, owing to solving lock barrel still by inside and outside annulus pressure effect, although pressure reduction
Relatively control to reduce during discharge capacity, but still the bigger pressure reduction of existence ensures that solving lock barrel 4 can not be repositioned to mechanism's release conditions, so lock
The radial motion of block 5 is defined, and now mechanism is still within lockup state；
When needs discharge, termination of pumping, the pressure reduction solving lock barrel 4 upper and lower end face does not exists, and is unlocking sleeve spring 3
Restoring force effect under up, contact until solving lock barrel 4 upper surface with the step surface of upper shell 1, now solution lock barrel 4
Annular groove is the most corresponding with the boss of lock dog 5；Meanwhile, during termination of pumping by lock body 2 by by lock body spring 7 reply masterpiece upwards
With, at lock dog 5 with by under the contact of incline plane effect of lock body 2, the trend of lock dog 5 oriented body 6 movement outside, when solving lock barrel 4
The boss of annular groove and lock dog 5 axially to lock dog time corresponding 5 radial outward movement, boss is combined with groove, and mechanism completes to release
Put action.
Embodiment 2: as shown in Figure 1 and Figure 2,
Place respectively by lock body spring reconciliation lock barrel spring on portion and lower stage terrace in the body, lock dog is installed on
In the through hole of body, install in body exterior and solve lock barrel, by upper shell with body with threadeding, finally will be by lock body from upper
And lower loading body interior.
When normally creeping into, mechanism is in release conditions, when needs lock, increase work discharge capacity to controlling discharge capacity,
Alignd with the by-pass prot of body by lock body, solve lock barrel descending under the effect of inside and outside annulus pressure, lock dog with by the ring of lock body
Shape groove is meshed.Now, revert to normally work discharge capacity, and mechanism is still within lockup state.
When needs discharge, termination of pumping, solve lock barrel up under the restoring force effect unlocking sleeve spring, its annular
Groove is the most corresponding with the boss of lock dog.By lock body by by the restoring force effect upwards of lock body spring, when the annular solving lock barrel
The boss of groove and lock dog is axially to lock dog radial outward movement time corresponding, and boss is combined with groove, and mechanism completes release movement.
As it has been described above, embodiments of the invention are explained, but as long as essentially without departing from this
Bright inventive point and effect can have a lot of deformation, and this will be readily apparent to persons skilled in the art.Therefore, this
Within the variation of sample is also integrally incorporated in protection scope of the present invention.
Claims (4)
1. a down-hole remote control locking method, it is characterised in that containing following steps:
When normally creeping into, mechanism is in release conditions, and when needs lock, increase work discharge capacity, to controlling discharge capacity, is locked
Body compresses by lock body spring descending under differential pressure action, until being connected with the step surface of upper shell by the step surface of lock body upper end
Touching, now alignd with the by-pass prot of body by the by-pass prot of lock body, drilling fluid flows into the ring unlocking upper cartridge by by-pass prot
Shape space, under the effect of inside and outside annulus pressure, unlocks sleeve compresses unblock sleeve spring descending, and the boss of lock dog is solving lock tube
Departing from groove under the axial thrust of cylinder, to mechanism, center position moves, and is meshed with by the incised groove of lock body；Now,
Revert to normally work discharge capacity, owing to solving lock barrel still by inside and outside annulus pressure effect, although pressure reduction relatively controls to subtract during discharge capacity
Little, but still there is bigger pressure reduction and ensure that solving lock barrel can not be repositioned to mechanism's release conditions, so the radial motion quilt of lock dog
Limiting, now mechanism is still within lockup state；
When needs discharge, termination of pumping, the pressure reduction solving lock barrel upper and lower end face does not exists, in the reply unlocking sleeve spring
Under power effect up, until solve lock barrel upper surface contact with the step surface of upper shell, now solve the annular groove of lock barrel
The most corresponding with the boss of lock dog；Meanwhile, by lock body by by the restoring force effect upwards of lock body spring during termination of pumping, at lock dog and quilt
Under the contact of incline plane effect of lock body, the trend of lock dog oriented outer body motion, when the annular groove and the lock dog that solve lock barrel
Boss is axially to lock dog radial outward movement during correspondence, and boss is combined with groove, and mechanism completes release movement.
2. down-hole remote-controlled lock locking apparatus, it is characterised in that by upper shell, by lock body, unlock sleeve spring, solve lock barrel, lock dog,
Body, formed by lock body spring；Body, conciliate on lock barrel by lock body and have by-pass prot；It is installed on inside body by lock body, solves
Lock barrel is installed on the outside of body, body with upper shell with threadeding；Slotting in the middle part of body, lock dog is installed on the groove of body
In, lock dog and being recessed at of body are upwardly into rare two week；Groove, axial section profile of tooth and lock dog phase is had in the middle part of lock body
Engagement；Unlock and have annular groove inside lower cartridge, match with the inclined-plane boss of lock dog；Unlock sleeve spring and be placed in unblock
In sleeve and body in annular space between path portion upper surface, it is placed in by lock body bottom and body bigger diameter end by lock body spring
In annular space between side；The corresponding positions solving lock barrel and body is equipped with sealing ring.
Down-hole the most according to claim 2 remote-controlled lock locking apparatus, is characterized in that: there is the serrated wheel of axial distribution lock dog side
Exterior feature, opposite side has inclined-plane boss structure, corresponding, in axial thrust effect with the contour structure being conciliate lock barrel by lock body respectively
Under, lock dog can move radially.
Down-hole the most according to claim 2 remote-controlled lock locking apparatus, is characterized in that: when complete with the saw tooth profile of lock dog by lock body
When entirely engaging, axially aligned with the by-pass prot on body by lock body；The boss bottom solving lock barrel has by-pass prot to communicate with annular space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310083044.0A CN104047560B (en) | 2013-03-15 | 2013-03-15 | Down-hole remote-controlled lock locking apparatus and remote control locking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310083044.0A CN104047560B (en) | 2013-03-15 | 2013-03-15 | Down-hole remote-controlled lock locking apparatus and remote control locking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104047560A CN104047560A (en) | 2014-09-17 |
| CN104047560B true CN104047560B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310083044.0A Active CN104047560B (en) | 2013-03-15 | 2013-03-15 | Down-hole remote-controlled lock locking apparatus and remote control locking method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505951B (en) * | 2017-02-23 | 2020-07-03 | 中国石油化工股份有限公司 | Locking device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856594A (en) * | 1988-08-26 | 1989-08-15 | Vetco Gray Inc. | Wellhead connector locking device |
| CN1387602A (en) * | 1999-11-17 | 2002-12-25 | 国际壳牌研究有限公司 | Lock assembly |
| CN2787821Y (en) * | 2005-04-11 | 2006-06-14 | 西南石油学院 | Installing stub for square drill rod |
| CN201041001Y (en) * | 2006-11-29 | 2008-03-26 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling well bottom bushing longitudinal locking device |
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| CN101377120A (en) * | 2008-10-08 | 2009-03-04 | 宝鸡石油机械有限责任公司 | Sea underwater hydraulic connector |
| CN202039809U (en) * | 2011-04-25 | 2011-11-16 | 中国石油大学(北京) | Underwater double-unlocking connector |
| CN203239260U (en) * | 2013-03-15 | 2013-10-16 | 中国石油天然气集团公司 | Down-hole remote-control locking device |
-
2013
- 2013-03-15 CN CN201310083044.0A patent/CN104047560B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856594A (en) * | 1988-08-26 | 1989-08-15 | Vetco Gray Inc. | Wellhead connector locking device |
| CN1387602A (en) * | 1999-11-17 | 2002-12-25 | 国际壳牌研究有限公司 | Lock assembly |
| CN2787821Y (en) * | 2005-04-11 | 2006-06-14 | 西南石油学院 | Installing stub for square drill rod |
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| CN201041001Y (en) * | 2006-11-29 | 2008-03-26 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling well bottom bushing longitudinal locking device |
| CN101377120A (en) * | 2008-10-08 | 2009-03-04 | 宝鸡石油机械有限责任公司 | Sea underwater hydraulic connector |
| CN202039809U (en) * | 2011-04-25 | 2011-11-16 | 中国石油大学(北京) | Underwater double-unlocking connector |
| CN203239260U (en) * | 2013-03-15 | 2013-10-16 | 中国石油天然气集团公司 | Down-hole remote-control locking device |
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| Publication number | Publication date |
|---|---|
| CN104047560A (en) | 2014-09-17 |
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