CN106468149B - A kind of salvaging structure - Google Patents
A kind of salvaging structure Download PDFInfo
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- CN106468149B CN106468149B CN201510515458.5A CN201510515458A CN106468149B CN 106468149 B CN106468149 B CN 106468149B CN 201510515458 A CN201510515458 A CN 201510515458A CN 106468149 B CN106468149 B CN 106468149B
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- ball seat
- hole
- junk mill
- salvaging
- box cupling
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Abstract
The present invention relates to a kind of salvaging structures, comprising: ball seat is successively configured with the first bellmouth to communicate with each other and first through hole in the inside of the ball seat from top to bottom, is configured with shoulder in first bellmouth and the position being connected with the first through hole；Junk mill has installation cavity in the internal structure of the junk mill；And the driving part in the installation cavity is arranged in part, wherein, under salvaging state, after the fishing head of the junk mill extend into the first through hole and is mutually clamped with the shoulder, by rotating the driving part according to first direction, the ball seat is salvaged into well.The salvaging structure has the advantages that shorten construction period, simplifies working procedure, avoids the generation of bit bouncing, bit freezing phenomenon, and also has the advantages that the low number that makes a trip with reduction of construction cost.
Description
Technical field
The present invention relates to petroleum drilling technology field more particularly to a kind of salvaging structures.
Background technique
Currently, existing salvaging structure usually after drilling leakage or cavey formation and carrying out reaming hole, utilizes expansion ripple
Pipe connection ball seat is lowered into the predeterminated position in shaft bottom.Then, it carries out playing out running tool after testing envelope, back-off.However, the dilatational wave
Line pipe can have ovality after carrying out hydraulic expansion.Therefore, it is necessary to be trimmed to circle using mechanical tube.Meanwhile milling transition
Connector, box cupling and ball seat.In the process, the nubbin after milling is easy to fall into underground or is stuck in the borehole wall, leads to bit bouncing
Or the generation of bit freezing phenomenon, so that construction period can be extended.
Summary of the invention
In view of the above-mentioned problems, proposing a kind of salvaging structure according to the present invention, comprising: ball seat, in the inside of the ball seat
It is successively configured with the first bellmouth to communicate with each other and first through hole from top to bottom, it is logical with described first in first bellmouth
The position that hole is connected is configured with shoulder；Junk mill has installation cavity in the internal structure of the junk mill；And part is arranged described
Driving part in installation cavity, wherein under salvaging state, when the fishing head of the junk mill is extend into the first through hole simultaneously
After being mutually clamped with the shoulder, by rotating the driving part according to first direction, the ball seat is salvaged
Well out.It can be seen that the ball seat in the application need to be only connected as one in salvaged well out with junk mill, by above mentioning junk mill,
The ball seat can be salvaged well together.In this way, just reduce milling amount, simplify working procedure, meanwhile, after also avoiding milling
Ball seat and nubbin fall into underground, cause bit freezing and suppress pump risk generation.
Preferably, the second through-hole being connected with the first through hole is also configured in the inside of the ball seat, described
The position that first through hole is connected with second through-hole is configured with so that the second bellmouth that pitching is set.Due to this
The setting of two bellmouths enables to the pitching being put into that can rest in second bellmouth, to reach closure second
The purpose of through-hole.
Preferably, the junk mill includes that internal structure has the interconnecting piece of the installation cavity and is connected with the interconnecting piece
Milling portion, wherein be configured with transition circle cambered surface between the bottom wall and peripheral wall in the milling portion.The setting in the excessive circular face,
The milling portion be can be avoided in the internal perisporium of milling box cupling, since the requirement of milling is not achieved with corner angle, or even can be right
The drawbacks of internal perisporium of box cupling damages.
Preferably, the junk mill further includes fishing head, the fishing head includes the fishing head sheet being arranged on the bottom wall
Body and the seeker being connected with the fishing head ontology, wherein circumferentially spaced on the periphery wall of the fishing head ontology
Formula is equipped with multiple first flow-conveying grooves, and circumferentially spaced formula is equipped with multiple second flow-conveying grooves on the outer wall of the seeker.This
The setting of one flow-conveying groove and the second flow-conveying groove, being not only conducive to seeker and fishing head ontology can smoothly enter into first through hole,
Meanwhile also avoiding the fishing head ontology and seeker excessive by radially inward extruding force, lead to the drawbacks of being damaged.
Preferably, each first flow-conveying groove is connected with corresponding second flow-conveying groove.In this way, when need to be to pitching
It when pressurizeing or needing to rinse, then needs to inject liquid from ground to underground, by making each first flow-conveying groove with corresponding the
Two flow-conveying grooves are connected, to guarantee that the liquid injected can pass through, avoid the liquid injected that chance occurs stifled.
Preferably, the salvaging structure further includes the box cupling being threadedly coupled with the ball seat according to second direction.
Preferably, compartment is equipped with multiple flowing holes on the bottom wall.When needing to pressurize to pitching or need bulb syringe
When the internal sand body of seat, by the way that from ground to underground injection liquid, which will flow out from each flowing hole, be washed away with reaching
Purpose.
Preferably, the junk mill of the inside of the box cupling is arranged in slidingtype, wherein when the seeker extend into institute
It states after being interference fit to the milling portion and first bellmouth in first through hole, by driving the driving part
The junk mill carries out rotation downlink according to the first direction, so that the ball seat is gradually disengaged with the box cupling.
Preferably, the driving part drive the junk mill according to the first direction carry out rotation downlink process
In, box cupling described in the continuous milling of peripheral wall in the milling portion and the internal perisporium at position that is connected with the ball seat so that
The internal diameter of the box cupling is greater than the outer diameter of the ball seat.
Preferably, it is upper mention the junk mill when, the bottom wall of the upper wall of the seeker and the shoulder is mutually clamped with by institute
It states ball seat and salvages well.
Preferably, the upper edge in the ball seat is circumferentially configured with rounding face.The setting in the rounding face facilitates the ball seat to beat
It pulls well out, avoids meeting and block.
Preferably, the periphery wall in the position that the ball seat is connected with the box cupling of the upper port in the ball seat
It is equipped with annular seal groove, lip ring is installed in the annular seal groove.The setting of the lip ring, Ke Yiqi
To the effect of sealing, avoids external sand body or liquid from entering the inside of ball seat, influence the salvaging of ball seat.
According to the present invention, which, which has, shortens construction period, simplifies working procedure, avoids bit bouncing, bit freezing phenomenon
Generation the advantages of, and the number that also has the advantages that construction cost is low and reduction makes a trip.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.In figure:
Fig. 1 is the overall structure diagram of the salvaging structure of embodiments herein.
Fig. 2 is the overall structure diagram of the salvaging ball seat of the salvaging structure of embodiments herein.
Fig. 3 is the overall structure diagram of the junk mill of the salvaging structure of embodiments herein.
In the accompanying drawings, identical component uses identical appended drawing reference.Attached drawing is not according to actual scaling.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, Fig. 1 schematically show the salvaging structure 100 include ball seat 1, junk mill 2 and
Driving part 3.
In embodiments herein, it is successively configured with the first taper to communicate with each other from top to bottom in the inside of ball seat 1
Hole 11 and first through hole 12 are configured with shoulder 13 at the position that first bellmouth 11 is connected with first through hole 12.
In embodiments herein, the ball seat 1 can by easily boring, the biggish material of specific gravity is fabricated.Such as it can be by casting
Iron material matter is fabricated.In this way, can prevent the ball seat 1 from surprisingly entering well, floats in well and cause the hair of the risk of shaft bottom complexity
It is raw.In addition, it is still reusable after salvaging well using ball seat 1 caused by the material system for having above-mentioned characteristic, as a result,
Greatly reduce construction cost.
In embodiments herein, the internal structure of the junk mill 2 has installation cavity 211.Wherein, in the installation cavity 211
Internal perisporium is equipped with external screw thread or internal screw thread.It is readily appreciated that whether be equipped with external screw thread or interior spiral shell on the internal perisporium of the installation cavity 211
Line is then according to driving part 3 as described below with matching.
The part of the driving part 3 is arranged in the installation cavity 211.Specifically, which can be with the installation cavity
211 is are threadedly coupled, to facilitate the installation and disassembly of the driving part 3.In this way, just realizing the driving part 3 and junk mill 2
Be fixedly connected.Wherein, under salvaging state, when the fishing head 23 of junk mill 2 extend into first through hole 12 and with 13 phase of shoulder
After clamping, by rotating the driving part 3 according to first direction, which is salvaged into well.Wherein, this
It one direction can be for forward or backwards.It is positive in embodiments herein.It can be seen that the ball seat 1 in the application is being beaten
When pulling well out, it need to be only connected as one with junk mill 2, by above mentioning junk mill 2, which can be salvaged well together.In this way,
Just it reduces milling amount, simplify working procedure, meanwhile, ball seat 1 and nubbin after also avoiding milling fall into underground, draw
It plays bit freezing or suppresses pump.
In embodiments herein, which includes the drilling rod (figure that part is arranged in the installation cavity 211
In be not shown) and the driving device (not shown) that is connected with the drilling rod.
As shown in Fig. 2, in a preferred embodiment, being also configured in the inside of ball seat 1 and being connected with first through hole 12
The second logical through-hole 14 is configured with use so that pitching 4 was set at the position that first through hole 12 is connected with the second through-hole 14
Second bellmouth 15.Specifically, due to the setting of second bellmouth 15, enable to the pitching being put into 4 that can rest on
In second bellmouth 15, to achieve the purpose that block the second through-hole 14.In addition, liquid is injected from ground to underground, due to
The pitching 4 blocks second through-hole 14, to can achieve the purpose that pressurize to pitching 4.To be done for next underground construction
Prepare.
As shown in figure 3, in a preferred embodiment, which includes the company that internal structure has above-mentioned installation cavity 211
Socket part 21 and the milling portion 22 being connected with the interconnecting piece 21, wherein the structure between the bottom wall 221 and peripheral wall 222 in milling portion 22
Transition circle cambered surface 223 is made.Wherein, the interconnecting piece 21 is substantially cylindrical.The outer diameter of the interconnecting piece 21 is less than the milling portion 22
Outer diameter, the outer diameter in the milling portion 22 is slightly larger than the internal diameter with box cupling 5 as described below.In this way, the milling portion just can be passed through
22 constantly rotate in a circumferential direction, to have the function that the internal perisporium of milling box cupling 5, further, reach and increase the box cupling 5
Internal diameter purpose.
In addition, the setting in the excessive circular face 223, can be avoided the milling portion 22 in the internal perisporium of milling box cupling 5, by
In the requirement of milling is not achieved with corner angle, or even can be damaged to the internal perisporium of box cupling 5 the drawbacks of.
In a preferred embodiment, which further includes fishing head 23, which includes being arranged in bottom wall
Fishing head ontology 231 on 221 and the seeker 232 being connected with the fishing head ontology 231, wherein in fishing head ontology 231
Periphery wall on circumferentially spaced formula be equipped with multiple first flow-conveying grooves 233, circumferentially spaced formula is set on the outer wall of seeker 232
There are multiple second flow-conveying grooves 234.In embodiments herein, the fishing head ontology 231 is generally cylindrical, the seeker 232
Decentralization end be configured to taper.Guide the seeker 232 that can successfully extend into first through hole 12 in this way, facilitating.
In addition, the setting of first flow-conveying groove 233 and the second flow-conveying groove 234, in the fishing head ontology 231 and seeker
232 by radially inward extruding force (such as the seeker 232 is during extending into first through hole 12) when, enable to this
Elastic deformation can occur radially inward for fishing head ontology 231 and seeker 232, when the fishing head ontology 231 and guidance
After first 232 protrude fully into first through hole 12, under the action of elastic restoring force, and can radially it expand until restoring
To original shape.In this way, being not only conducive to seeker 232 and fishing head ontology 231 can smoothly enter into first through hole 12, together
When, it also avoids the fishing head ontology 231 and seeker 232 excessive by radially inward extruding force, leads to the disadvantage being damaged
End.
As shown in figure 3, in a preferred embodiment, each first flow-conveying groove 233 with corresponding second flow-conveying groove
234 are connected.In this way, then needing to inject liquid from ground to underground, by making when that need to pressurize to pitching 4 or need to rinse
It obtains each first flow-conveying groove 233 to be connected with corresponding second flow-conveying groove 234, to guarantee that the liquid injected can smoothly lead to
It crosses, the liquid injected is avoided to occur to meet stifled drawback.
In a preferred embodiment, which further includes carrying out screw thread company according to second direction with ball seat 1
The box cupling 5 connect.The second direction should be with above-mentioned first direction on the contrary, the second direction can be for forward or backwards.In the application
Embodiment in, above-mentioned first direction is forward direction, therefore the second direction is reversed.
In addition, by the way of being threadedly coupled, convenient for the installation and disassembly of the box cupling 5 and ball seat 1.Also, junk mill 2 with
After ball seat 1 achieves a fixed connection, by driving part 3 drive 2 circumferentially rotatable downlink of junk mill when, also indirectly drive ball seat 1 into
The capable downlink that rotates in a circumferential direction, and gradually disengaged with box cupling 5.
As shown in Fig. 2, in a preferred embodiment, compartment is equipped with multiple flowing holes 224 on bottom wall 221.When
When needing to pressurize to pitching 4 or need to rinse the sand body inside ball seat 1, by injecting liquid from ground to underground, the liquid is just
It can be flowed out from each flowing hole 224, to achieve the purpose that wash away.
As shown in Figure 1, Figure 2 and Figure 3, in a preferred embodiment, the junk mill of the inside of box cupling 5 is arranged in slidingtype
2, wherein after seeker 232 is extend into first through hole 12 to the milling portion 22 and the first bellmouth 11 to be interference fitted, lead to
It crosses so that driving part 3 drives junk mill 2 to carry out rotation downlink according to first direction, so that ball seat 1 is gradually disengaged with box cupling 5.
Specifically, when the junk mill 2 is admitted to underground along the inside of box cupling 5, until the seeker 232 of junk mill 2 is extend into first through hole 12
When, circumferentially rotatable downlink is continued by the junk mill 2.When circumferential and axial are realized in the bottom end in milling portion 22 and the first bellmouth 11
On be fixedly connected after, by driving part 3 drive junk mill 2 rotated according to first direction, thus indirectly drive ball seat 1
Also it is rotated according to first direction.Further, so that the ball seat 1 and box cupling 5 unscrew disengagement.
In a preferred embodiment, the mistake of rotation downlink is carried out according to first direction in the drive junk mill 2 of driving part 3
Cheng Zhong, the continuous milling box cupling 5 of the peripheral wall in milling portion 22 and the internal perisporium at position that is connected with ball seat 1 so that box cupling 5
Internal diameter is greater than the outer diameter of ball seat 1.After above-mentioned junk mill 2 achieves a fixed connection with ball seat 1, by making the junk mill 2 rotate downlink,
So that milling portion 22 moves down into the position that corresponding box cupling 5 is connected with ball seat 1.To carry out milling to the internal perisporium at this,
After the internal diameter of the box cupling 5 is greater than the outer diameter of ball seat 1, stop to milling herein.Further, facilitate and take out the ball seat 1, keep away
Exempt from it is upper mention junk mill 2 and ball seat 1 during, occur meet card the problem of, thus the drawbacks of causing ball seat 1 that can not take out.
In a preferred embodiment, it is upper mention junk mill 2 when, the bottom wall of the upper wall 235 of the seeker 232 and shoulder 13
131 phases are clamped so that ball seat 1 is salvaged well.Since seeker 232 is when protruding into first through hole 12, can receive radially inward
Contracting.After the seeker 232 is completely into the first through hole 12, understand under the action of the elastic restoring force of itself, gradually edge
Radial outward dilations are until be restored to the reset condition before being uncompressed.At this point, the outer diameter of the seeker 232 is greater than first through hole
12 upper end bore.It is upper mention the junk mill 2 when, 131 phase of bottom wall of upper wall 235 and shoulder 13 can be made to be clamped, so that should
Junk mill 2 is connected as one with ball seat 1, and the ball seat 1 is finally salvaged well.It can be seen that the invention avoids the mills to ball seat 1
Milling, simplifies working procedure, shortens construction period, the nubbin after avoiding milling falls into shaft bottom or is stuck in the borehole wall, causes
Bit bouncing, bit freezing influence subsequent construction.Meanwhile also avoiding needing to increase by one time because of tripping in flat-bottom grind shoes and make a trip, thus, it reduces
Construction cost.
In a preferred embodiment, rounding face 16 is circumferentially configured on the upper edge of ball seat 1.The rounding face 16 is set
It sets, facilitates the ball seat 1 to salvage well, avoid generating the stuck problem.
In a preferred embodiment, in the upper port of ball seat 1 in the position that ball seat 1 is connected with box cupling 5
Periphery wall is equipped with annular seal groove 17, is equipped with lip ring 18 in the annular seal groove 17.The lip ring 18
Setting, sealing can be played the role of, avoid external sand body or liquid from entering the inside of ball seat 1, influence beating for ball seat 1
Fishing.
Shorten construction period in conclusion the salvaging structure 100 has, simplify working procedure, avoid bit bouncing, bit freezing phenomenon
Generation the advantages of, and the number that also has the advantages that construction cost is low and reduction makes a trip.
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 to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (8)
1. a kind of salvaging structure, comprising:
Ball seat is successively configured with the first bellmouth to communicate with each other and first through hole in the inside of the ball seat from top to bottom,
The position that first bellmouth is connected with the first through hole is configured with shoulder；
Junk mill has installation cavity in the internal structure of the junk mill；The junk mill includes the connection that internal structure has the installation cavity
Portion and the milling portion being connected with the interconnecting piece, wherein be configured with transition circle between the bottom wall and peripheral wall in the milling portion
Cambered surface, the junk mill further include fishing head, the fishing head include the fishing head ontology being arranged on the bottom wall and with it is described
The seeker that fishing head ontology is connected,
The salvaging structure further includes the box cupling being threadedly coupled with the ball seat according to second direction, the junk mill slidingtype
The inside of the box cupling is set, and
The driving part in the installation cavity is arranged in part,
Wherein, under salvaging state, when the seeker is extend into the first through hole to the milling portion and described first
After bellmouth is interference fit, by making the driving part that the junk mill be driven to carry out rotation downlink according to first direction,
So that the ball seat is gradually disengaged with the box cupling,
During the driving part drives the junk mill to carry out rotation downlink according to the first direction, the milling portion
The continuous milling of peripheral wall described in box cupling and the internal perisporium at position that is connected with the ball seat so that the internal diameter of the box cupling
Greater than the outer diameter of the ball seat, the ball seat is salvaged into well.
2. salvaging structure according to claim 1, which is characterized in that be also configured with and described in the inside of the ball seat
The second through-hole that one through-hole is connected, the position that the first through hole is connected with second through-hole be configured with use so that
The second bellmouth that pitching is set.
3. salvaging structure according to claim 1, which is characterized in that wherein, on the periphery wall of the fishing head ontology
Circumferentially spaced formula is equipped with multiple first flow-conveying grooves, and circumferentially spaced formula is equipped with multiple second mistakes on the outer wall of the seeker
Chute.
4. salvaging structure according to claim 3, which is characterized in that each first flow-conveying groove is with corresponding described
Two flow-conveying grooves are connected.
5. salvaging structure according to claim 1, which is characterized in that compartment is equipped with multiple overcurrents on the bottom wall
Hole.
6. salvaging structure according to claim 1, which is characterized in that it is upper mention the junk mill when, the seeker it is upper
The bottom wall of wall and the shoulder is mutually clamped so that the ball seat is salvaged well.
7. salvaging structure according to any one of claim 1 to 6, which is characterized in that on the upper edge of the ball seat along week
To being configured with rounding face.
8. salvaging structure according to claim 1, which is characterized in that the ball seat upper port be in the ball seat
The periphery wall at the position being connected with the box cupling is equipped with annular seal groove, and it is close that annular is equipped in the annular seal groove
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515458.5A CN106468149B (en) | 2015-08-20 | 2015-08-20 | A kind of salvaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515458.5A CN106468149B (en) | 2015-08-20 | 2015-08-20 | A kind of salvaging structure |
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| Publication Number | Publication Date |
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| CN106468149A CN106468149A (en) | 2017-03-01 |
| CN106468149B true CN106468149B (en) | 2019-01-11 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286420A (en) * | 2017-01-09 | 2018-07-17 | 中国石油化工股份有限公司 | A kind of caulking tube string and oil/gas well blocking method |
| CN109252823B (en) * | 2018-09-20 | 2023-11-28 | 中国石油天然气股份有限公司 | Synchronous grabbing mechanism for multi-wing mill shoes and use method |
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| CN203905877U (en) * | 2014-04-04 | 2014-10-29 | 河南能源化工集团研究院有限公司 | Coal mine concentric circle bell-mouthed fishing drilling tool |
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| US1469493A (en) * | 1921-10-29 | 1923-10-02 | Charles H Brown | Fishing tool |
| CN201318142Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Milling and fishing integrated tool |
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|---|---|---|---|---|
| US4545432A (en) * | 1982-12-16 | 1985-10-08 | Appleton Robert P | Device for retrieving objects from wells |
| RU57796U1 (en) * | 2006-05-06 | 2006-10-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Downhole Catcher |
| CN201448080U (en) * | 2009-07-11 | 2010-05-05 | 东营市铁人石油机具有限公司 | Wash-over milling fishing integrated tool |
| CN202000943U (en) * | 2010-12-10 | 2011-10-05 | 中国石油化工股份有限公司 | Spirally-guided retrievable salvaging spear |
| CN202689984U (en) * | 2012-07-20 | 2013-01-23 | 中国石油化工股份有限公司 | Intercommunicating and fishing integrated tool |
| CN103452514A (en) * | 2013-09-13 | 2013-12-18 | 中国海洋石油总公司 | Wide-range catch socket |
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| CN106468149A (en) | 2017-03-01 |
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