CN107420063A - The salvaging system and its Refloatation method of a kind of downhole tool - Google Patents
The salvaging system and its Refloatation method of a kind of downhole tool Download PDFInfo
- Publication number
- CN107420063A CN107420063A CN201710569636.1A CN201710569636A CN107420063A CN 107420063 A CN107420063 A CN 107420063A CN 201710569636 A CN201710569636 A CN 201710569636A CN 107420063 A CN107420063 A CN 107420063A
- Authority
- CN
- China
- Prior art keywords
- salvaging
- sleeve
- pawl
- salvage
- thing
- 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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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
Abstract
The invention discloses a kind of salvaging system of downhole tool,It is characterized in that,Including fishing tool and hydraulic system,The fishing tool includes fishing rod,Sleeve,Top connection and lower contact,The top connection connects hydraulic system,Top connection has upper air duct,Fishing rod has middle air channel,Lower contact has lower air duct,Upper air duct,Middle air channel and lower air duct three connection,Salvage and play pawl by elastic mechanism and sleeve connection and flexible reciprocating motion can be carried out with the axial direction of relative sleeve,Salvage to play and be provided with cutting edge at pawl radix unguis,When fishing tool carries out fishing,Sleeve penetrates salvaging thing,And the outer wall that pawl and sleeve are played by salvaging plays clamping action to salvaging thing,The generation Action of Gravity Field of chock pressure difference effect and salvaging thing is produced in clamping process by opening and closing hydraulic system,Elastic mechanism driving is salvaged bullet pawl and moved along beyond the region of objective existence wall progress reciprocating cutting is salvaged,The salvaging focusing surface that salvaging can be allowed to play the stable crawl of pawl is formed to salvage beyond the region of objective existence wall.
Description
Technical field
The present invention relates to a kind of fishing operation, the salvaging system and its Refloatation method of particularly a kind of downhole tool.
Background technology
Salvage and refer to what petroleum industry was handled the object taking-up fallen into well or the stage of end-on card out of pit shaft
The general designation of professional technique.Fall well for the instrument occurred in the operation process such as well logging, perforation, meet the accidents such as card, fishing operation
It is to solve the maximally efficient method of such accident.Prior art, during salvaging, due to fishing tool and salvage thing between not
It can produce and closely combine, during upward lifting, it sometimes appear that salvaging the phenomenon that thing comes off, thus may cause two
The generation of secondary accident.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of salvaging system of downhole tool, its feature
It is, including fishing tool and hydraulic system, the fishing tool include the fishing rod of hollow form and are arranged the sleeve of fishing rod,
The upper end of sleeve connects a top connection, and the bottom of sleeve connects a lower contact, and the top connection connects hydraulic system, above connect
Be provided with axially extending upper air duct in head, axially extending middle air channel be provided with fishing rod, in lower contact provided with axial
The lower air duct of extension, upper air duct, middle air channel and lower air duct three connection, salvage and play pawl and pass through elastic mechanism and sleeve connection and can
Flexible reciprocating motion is carried out with the axial direction of relative sleeve, salvages and is provided with cutting edge at bullet pawl radix unguis, when fishing tool is beaten
When dragging for operation, sleeve penetrates salvaging thing, and the outer wall by salvaging bullet pawl and sleeve plays clamping action to salvaging thing, clamps
The generation Action of Gravity Field of chock pressure difference effect and salvaging thing is produced in journey by opening and closing hydraulic system, elastic mechanism driving is salvaged
Play pawl to move along salvaging beyond the region of objective existence wall progress reciprocating cutting, salvage what bullet pawl stabilization captured to cause the wall formation of salvaging beyond the region of objective existence to allow
Salvage focusing surface.
In a preferred embodiment, the top of the sleeve is arranged with upper mounting seat, and the middle part of sleeve is provided with adapter, peace
The elastic mechanism being connected with both is provided between dress seat and adapter.
In a preferred embodiment, mounting seat is arranged with outside the top of the sleeve and top connection, the middle part of sleeve is provided with
Adapter, the elastic mechanism to be leant with both is provided between mounting seat and adapter.
In a preferred embodiment, the elastic mechanism is helical spring, and helical spring is set on sleeve.
In a preferred embodiment, the top erecting bed for playing pawl is salvaged formed with mount on the bottom of the adapter
On rank seat.
In a preferred embodiment, described salvage plays pawl including along the axially extending latch spoon of sleeve and positioned at latch spoon end
Radix unguis, wherein radix unguis and latch spoon be in quant shape, is provided with placement boss at the radix unguis that the sleeve plays pawl relative to salvaging, use
The radix unguis for playing pawl is salvaged to place.
In a preferred embodiment, the shearing that spacing ring is additionally provided with the sleeve and is fixed on spacing ring on sleeve
Pin.
In a preferred embodiment, in addition to a steel ball, the external diameter of the steel ball are less than upper air duct and the caliber in middle air channel
And more than the external diameter of throttle orifice.
In a preferred embodiment, the lower contact includes the target seeker and Sealing shield ring of taper, and the Sealing shield ring is set in
On sleeve.
The present invention separately includes a kind of Refloatation method of downhole tool：There is provided one and salvage system, including fishing tool and hydraulic pressure
System, wherein the fishing tool includes the fishing rod of hollow form and is arranged the sleeve of fishing rod, the upper end connection one of sleeve
Top connection, the bottom of sleeve connect a lower contact, and the top connection connects hydraulic system, and being provided with top connection is axially extending
Upper air duct, be provided with axially extending middle air channel in fishing rod, axially extending lower air duct, windward be provided with lower contact
Road, middle air channel and lower air duct three connection, salvage and play pawl and pass through elastic mechanism and sleeve connection and can be with the axial direction of relative sleeve
Flexible reciprocating motion is carried out, salvages and cutting edge is provided with bullet pawl radix unguis, decentralization fishing tool to the top for salvaging thing, start liquid
Pressure system, air-flow or liquid stream caused by hydraulic system act through fishing tool air channel act on salvage thing on cleaned
Operation；Control sleeve, which penetrates, salvages in thing, during lifting, salvages Action of Gravity Field ejection and and the sleeve for playing pawl because salvaging thing
Outer wall salvage thing together and play clamping action；Continue during above carrying, in the case where ensureing that salvaging thing does not fall off, start liquid
Pressure system, bullet pawl is salvaged by the chock pressure difference effect of throttle orifice and retracted relative to sleeve, then turns off hydraulic system,
Now salvage and play pawl because the Action of Gravity Field of salvaging thing ejects again, it is multiple to repeat keying hydraulic system so that elastic mechanism
Driving salvaging plays pawl and moved along salvaging beyond the region of objective existence wall progress reciprocating cutting, to salvage the formation of beyond the region of objective existence wall salvaging bullet pawl can be allowed steady
Surely the salvaging focusing surface captured.
To sum up, the present invention comprises at least following technique effect：
The salvaging of the present invention plays and is provided with cutting edge at the radix unguis of pawl, during fishing tool clamps and salvages thing, leads to
Cross and open and close the generation Action of Gravity Field that hydraulic system produces chock pressure difference effect and salvaging thing, elastic mechanism driving, which is salvaged, plays pawl edge
Salvaging beyond the region of objective existence wall and carry out reciprocating cutting motion, to salvage the formation of beyond the region of objective existence wall salvaging can be allowed to play salvaging for the stable crawl of pawl
Power face.The friction surface formed is cut due to salvaging focusing surface, therefore can increase to salvage and play rubbing between pawl and salvaging thing
Power is wiped, is prevented due to close combination can not be produced between fishing tool and salvaging thing, during upward lifting, sometimes
Occur salvaging the phenomenon that thing comes off, avoid the generation of second accident.
Brief description of the drawings
Fig. 1 is a kind of sectional view of the salvaging system fishing tool of downhole tool of the present invention
Specific embodiment
In detailed description below, element numbers, which can be indicated in the diagram enclosed, turns into some therein, and
Represented with the particular example describing mode of the practicable embodiment.This kind of embodiment can illustrate enough details so that the field
General those skilled in the art be able to have to implement.Reader into the present invention it is understood that also using other embodiments or be not contrary to
Made on the premise of from the embodiment structural, logicality and electrically on change.Therefore, following detailed description will not
It is intended to be considered to be a kind of restriction, anti-, the embodiment included in it will be defined by right.
The invention provides include hollow form including fishing tool and hydraulic system (not shown), the fishing tool
Fishing rod 1 and the sleeve 2 for being arranged fishing rod, the upper end of sleeve 2 connect a top connection 3, and the bottom of sleeve 2, which connects, to be connect
First 4, the top connection 3 connects hydraulic system, and axially extending upper air duct 31 is provided with top connection 3, being provided with fishing rod 1
Axially extending middle air channel 11, axially extending lower air duct 41, upper air duct 31, middle air channel 11 and leeward are provided with lower contact 4
The three of road 41 connects, and salvages and plays pawl 5 and be connected by elastic mechanism 6 with sleeve 2 and can carry out stretching with the axial direction of relative sleeve 2 past
Multiple motion, salvage and be provided with cutting edge 521 at the radix unguis 52 for playing pawl 5, when fishing tool carries out fishing, sleeve 2 penetrates
Thing is salvaged, and plays by salvaging the outer wall of pawl 5 and sleeve 2 and plays clamping action to salvaging thing, by opening and closing liquid in clamping process
Pressure system produces chock pressure difference effect and salvages the generation Action of Gravity Field of thing, and the driving of elastic mechanism 6, which is salvaged, plays pawl 5 along salvaging
Beyond the region of objective existence wall carries out reciprocating cutting motion, and the salvaging focusing surface that salvaging can be allowed to play the stable crawl of pawl 5 is formed to salvage beyond the region of objective existence wall.
The top of the sleeve 2 is arranged with upper mounting seat 7, and the middle part of sleeve 2 is provided with adapter 8, upper mounting seat 7 and switching
The elastic mechanism 6 being connected with both is provided between seat 8.
Mounting seat 7 is arranged with outside the top of the sleeve 2 and top connection 3, the middle part of sleeve 2 is provided with adapter 8, mounting seat
The elastic mechanism 6 to be leant with both is provided between 7 and adapter 8.In the present embodiment, the elastic mechanism 6 is spiral bullet
Spring, and helical spring is set on sleeve 2.Formed with mount on the bottom of the adapter 8, the top peace for playing pawl 5 is salvaged
Fill in mount.The bullet pawl 5 of salvaging is included along the axially extending latch spoon 51 of sleeve 2 and the radix unguis positioned at the end of latch spoon 51
52, wherein radix unguis 52 and latch spoon 51 are in quant shape, and it is convex that placement is provided with the radix unguis 52 that the sleeve 2 plays pawl 5 relative to salvaging
Platform 21, the radix unguis 52 for playing pawl 5 is salvaged to place.It is additionally provided with the sleeve 2 and spacing work is played to the radix unguis for salvaging bullet pawl 5
Spacing ring 22 and the shear pin 23 being fixed on spacing ring 22 on sleeve 2.The lower contact 4 includes the target seeker of taper
42 and Sealing shield ring 43, the Sealing shield ring 43 be set on sleeve 2.The target seeker 42 of taper, which can penetrate, to be salvaged in thing, and backstop
Circle 43 can then play certain retaining effect.And salvage thing and during upper carry when fishing tool picks up, due to salvaging
The Action of Gravity Field of thing is on shear pin 23 so that shear pin 23 is pulled off, and can so make it that spacing ring 22 is de- with sleeve 2
From, and then make it that salvaging bullet pawl 5 is released and ejects, and play clamping action to salvaging thing with together with the outer wall of sleeve 2.
The present invention separately includes a kind of Refloatation method of downhole tool：There is provided one and salvage system, including fishing tool and hydraulic pressure
System, wherein the fishing tool includes the fishing rod 1 of hollow form and is arranged the sleeve 2 of fishing rod 1, the upper end of sleeve 2 connects
A top connection 3 is connect, the bottom of sleeve 2 connects a lower contact 4, and the top connection 4 connects hydraulic system, setting in top connection 3
There is an axially extending upper air duct 31, axially extending middle air channel 11 is provided with fishing rod 1, being provided with lower contact 4 axially being prolonged
The lower air duct 41 stretched, upper air duct 31, middle air channel 11 and the three of lower air duct 41 connection, salvage bullet pawl 5 and pass through elastic mechanism 6 and sleeve
2 are connected and flexible reciprocating motion can be carried out with the axial direction of relative sleeve 2, are salvaged and are provided with cutting edge at the radix unguis 52 for playing pawl 5
521, decentralization fishing tool to the top for salvaging thing starts hydraulic system, and air-flow caused by hydraulic system or liquid stream effect are logical
Cross fishing tool air channel act on salvage thing on carry out washing and cleaning operation；Control sleeve 2, which penetrates, salvages in thing, in lifting process
In, salvage bullet pawl 5 and play clamping action because salvaging the Action of Gravity Field ejection of thing and salvaging thing together with the outer wall of sleeve 2；Continue
During above carrying, in the case where ensureing that salvaging thing does not fall off, start hydraulic system, made by the chock pressure difference of throttle orifice 111
With make it that salvage bullet pawl 5 retracts relative to sleeve 2, then turns off hydraulic system, the gravity for playing pawl 5 because salvaging thing is now salvaged
Act on and ejecting again, it is multiple to repeat keying hydraulic system so that the driving of elastic mechanism 6, which is salvaged, plays pawl 5 along salvaging beyond the region of objective existence
Wall carries out reciprocating cutting motion, and the salvaging focusing surface that salvaging can be allowed to play the stable crawl of pawl 5 is formed to salvage beyond the region of objective existence wall.
To sum up, the present invention is cut the friction surface that is formed due to salvaging focusing surface, thus can increase salvaging play pawl with
The frictional force between thing is salvaged, prevents from, due to close combination can not be produced between fishing tool and salvaging thing, lifting upwards
During, it sometimes appear that salvaging the phenomenon that thing comes off, avoid the generation of second accident.
And when being salvaged by this fishing tool, if meeting card, hydraulic system can be opened, because the presence of throttle orifice 111 makes
The effect that the both ends of throttle orifice 111 have chock pressure difference is obtained, salvaging bullet pawl 5 can be made to retract, unfreezing.If chock pressure difference can not meet,
This salvaging system can also provide a steel ball 9, and the external diameter of the steel ball 9 is less than the caliber of upper air duct 31 and middle air channel 11 and is more than
The external diameter of throttle orifice 111.
By the way that steel ball 9 is entered into the bottom up to middle air channel 11 to middle air channel 11 from upper air duct 31 and blocks throttle orifice 111,
It is possible thereby to increase retractile action power, retracting to salvage by force plays pawl 5, unfreezing.
Embodiments of the invention are the foregoing is only, it is not limited to the scope of patent protection of the present invention.It is any ripe
Alike those skilled in the art is practised, is not being departed from spirit and scope of the invention, the change made and the equivalence replacement of retouching, is still this hair
In bright scope of patent protection.
Claims (10)
- A kind of 1. salvaging system of downhole tool, it is characterised in that including fishing tool and hydraulic system, the fishing tool bag Include the fishing rod of hollow form and be arranged the sleeve of fishing rod, the upper end of sleeve connects a top connection, the bottom connection of sleeve One lower contact, the top connection connect hydraulic system, and axially extending upper air duct is provided with top connection, being provided with fishing rod Axially extending middle air channel, axially extending lower air duct is provided with lower contact, upper air duct, middle air channel and lower air duct three connect It is logical, salvage and play pawl by elastic mechanism and sleeve connection and flexible reciprocating motion can be carried out with the axial direction of relative sleeve, salvage bullet Cutting edge is provided with pawl radix unguis, when fishing tool carries out fishing, sleeve penetrates salvaging thing, and by salvage play pawl with The outer wall of sleeve plays clamping action to salvaging thing, in clamping process by open and close hydraulic system produce chock pressure difference effect and The generation Action of Gravity Field of thing is salvaged, elastic mechanism driving salvaging bullet pawl carries out reciprocating cutting along salvaging beyond the region of objective existence wall and moved, so that Beyond the region of objective existence wall must be salvaged and form the salvaging focusing surface that salvaging can be allowed to play the stable crawl of pawl.
- 2. the salvaging system of downhole tool according to claim 1, it is characterised in that the top of the sleeve is arranged with Mounting seat, the middle part of sleeve are provided with adapter, and the elastic mechanism being connected with both is provided between mounting seat and adapter.
- 3. the salvaging system of downhole tool according to claim 1, it is characterised in that the top of the sleeve and top connection Mounting seat is arranged with outside, the middle part of sleeve is provided with adapter, and the elasticity to be leant with both is provided between mounting seat and adapter Mechanism.
- 4. the salvaging system of the downhole tool according to Claims 2 or 3, it is characterised in that the elastic mechanism is spiral Spring, and helical spring is set on sleeve.
- 5. the salvaging system of downhole tool according to claim 1, it is characterised in that formed on the bottom of the adapter There is mount, salvage on the top installation step seat for playing pawl.
- 6. the salvaging system of downhole tool according to claim 1, it is characterised in that the bullet pawl of salvaging is included along set The axially extending latch spoon of cylinder and the radix unguis positioned at latch spoon end, wherein radix unguis and latch spoon are in quant shape, and the sleeve is relative to beating Drag for and be provided with placement boss at the radix unguis for playing pawl, the radix unguis for playing pawl is salvaged to place.
- 7. the salvaging system of downhole tool according to claim 1, it is characterised in that be additionally provided with the sleeve spacing Ring and the shear pin being fixed on spacing ring on sleeve.
- 8. the salvaging system of downhole tool according to claim 1, it is characterised in that also including a steel ball, the steel ball External diameter be less than the caliber in upper air duct and middle air channel and more than the external diameter of throttle orifice.
- 9. the salvaging system of downhole tool according to claim 1, it is characterised in that the lower contact includes leading for taper Leader and Sealing shield ring, the Sealing shield ring are set on sleeve.
- A kind of 10. Refloatation method of downhole tool：There is provided one and salvage system, including fishing tool and hydraulic system, wherein described Fishing tool includes the fishing rod of hollow form and is arranged the sleeve of fishing rod, and the upper end of sleeve connects a top connection, sleeve Bottom connects a lower contact, and the top connection connects hydraulic system, is provided with axially extending upper air duct in top connection, salvages Axially extending middle air channel is provided with bar, axially extending lower air duct, upper air duct, middle air channel and leeward are provided with lower contact Road three connects, and salvages and plays pawl by elastic mechanism and sleeve connection and flexible reciprocal fortune can be carried out with the axial direction of relative sleeve It is dynamic, salvage and cutting edge is provided with bullet pawl radix unguis, decentralization fishing tool to the top for salvaging thing, start hydraulic system, hydraulic pressure system Air-flow caused by system or liquid stream act through fishing tool air channel act on salvage thing on carry out washing and cleaning operation；Control sleeve, which penetrates, salvages in thing, during lifting, salvages Action of Gravity Field ejection and and the sleeve for playing pawl because salvaging thing Outer wall salvage thing together and play clamping action；Continue during above carrying, in the case where ensureing that salvaging thing does not fall off, start hydraulic system, pass through the throttling pressure of throttle orifice Difference effect make it that salvage bullet pawl retracts relative to sleeve, then turns off hydraulic system, now salvages the weight for playing pawl because salvaging thing Power is acted on and ejected again, and it is multiple to repeat keying hydraulic system so that elastic mechanism driving, which is salvaged, plays pawl along salvaging beyond the region of objective existence Wall carries out reciprocating cutting motion, and the salvaging focusing surface that salvaging can be allowed to play the stable crawl of pawl is formed to salvage beyond the region of objective existence wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569636.1A CN107420063B (en) | 2017-07-13 | 2017-07-13 | A kind of the salvaging system and its Refloatation method of downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569636.1A CN107420063B (en) | 2017-07-13 | 2017-07-13 | A kind of the salvaging system and its Refloatation method of downhole tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107420063A true CN107420063A (en) | 2017-12-01 |
| CN107420063B CN107420063B (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569636.1A Active CN107420063B (en) | 2017-07-13 | 2017-07-13 | A kind of the salvaging system and its Refloatation method of downhole tool |
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| Country | Link |
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| CN (1) | CN107420063B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331955A (en) * | 2019-07-17 | 2019-10-15 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing releasable cable fishing tool and its application method |
| CN111946306A (en) * | 2020-08-21 | 2020-11-17 | 中国石油天然气股份有限公司 | Process method of hydraulic deblocking restrictor |
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| US5242201A (en) * | 1991-08-26 | 1993-09-07 | Beeman Robert S | Fishing tool |
| US20120118560A1 (en) * | 2009-06-02 | 2012-05-17 | 2K Tools As | Fishing tool |
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| CN204040972U (en) * | 2014-07-24 | 2014-12-24 | 中国石油天然气股份有限公司 | A kind of oil gas water well fisher |
| CN204175226U (en) * | 2014-10-20 | 2015-02-25 | 中国石油天然气股份有限公司 | Slips drags for lance |
| CN204804735U (en) * | 2015-06-03 | 2015-11-25 | 中国石油天然气股份有限公司 | Drag for lance |
| CN205243464U (en) * | 2015-12-25 | 2016-05-18 | 贵州高峰石油机械股份有限公司 | Two release sliding sleeve formula slip sockets |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242201A (en) * | 1991-08-26 | 1993-09-07 | Beeman Robert S | Fishing tool |
| US20120118560A1 (en) * | 2009-06-02 | 2012-05-17 | 2K Tools As | Fishing tool |
| CN104024563A (en) * | 2011-11-30 | 2014-09-03 | 韦尔泰克有限公司 | Pulling tool |
| CN204040972U (en) * | 2014-07-24 | 2014-12-24 | 中国石油天然气股份有限公司 | A kind of oil gas water well fisher |
| CN204175226U (en) * | 2014-10-20 | 2015-02-25 | 中国石油天然气股份有限公司 | Slips drags for lance |
| CN204804735U (en) * | 2015-06-03 | 2015-11-25 | 中国石油天然气股份有限公司 | Drag for lance |
| CN205243464U (en) * | 2015-12-25 | 2016-05-18 | 贵州高峰石油机械股份有限公司 | Two release sliding sleeve formula slip sockets |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331955A (en) * | 2019-07-17 | 2019-10-15 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing releasable cable fishing tool and its application method |
| CN110331955B (en) * | 2019-07-17 | 2021-05-11 | 中国石油集团渤海钻探工程有限公司 | Releasable cable fishing tool for coiled tubing and using method thereof |
| CN111946306A (en) * | 2020-08-21 | 2020-11-17 | 中国石油天然气股份有限公司 | Process method of hydraulic deblocking restrictor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107420063B (en) | 2019-10-25 |
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