CN107288567A - A kind of reversible set milling fishing integrated device and its Refloatation method - Google Patents
A kind of reversible set milling fishing integrated device and its Refloatation method Download PDFInfo
- Publication number
- CN107288567A CN107288567A CN201710678518.4A CN201710678518A CN107288567A CN 107288567 A CN107288567 A CN 107288567A CN 201710678518 A CN201710678518 A CN 201710678518A CN 107288567 A CN107288567 A CN 107288567A
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- China
- Prior art keywords
- slips
- milling
- fish
- outer barrel
- semicircular arc
- 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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Links
- 238000003801 milling Methods 0.000 title claims abstract description 69
- 230000002441 reversible effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 241000251468 Actinopterygii Species 0.000 claims abstract description 45
- 238000005553 drilling Methods 0.000 claims description 28
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 241001022395 Semotilus corporalis Species 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention discloses a kind of reversible set milling fishing integrated device and its Refloatation method, the device includes slips outer barrel and is connected to the top connection of slips outer barrel upper end, milling shoe is connected with the lower end of slips outer barrel, the threaded upper ends of release ring are connected in slips outer barrel, the lower end of release ring, which is provided with, is evenly equipped with one group of keyway, be evenly equipped with the upper end outer wall of slips one group with keyway corresponding and arc tips the second semicircular arc boss directed downwardly, release ring is slidably connected with slips by keyway and the second semicircular arc boss, the lower end inside of divider between keyway is provided with the first semicircular arc boss of arc tips upward.The present invention can grab engaging fish during set milling TOF and carry out set milling and realize salvaging, fishing slip grabs engaging fish all the time during salvaging, shaft bottom is will not fall off in the set complete rear fish of milling, and slips will not together rotate with casing section mill during milling, it can guarantee that slips will not be damaged, reduce processing cost.
Description
Technical field
Milling fishing integrated device is covered the present invention relates to a kind of reversible, belongs to underground fishing tool technical field.
Background technology
With deepening continuously for oil and gas exploitation technology, brill is likely to occur in oil/gas drilling and development process
The fish that situations such as post, oil pipe break causes drop shaft bottom accident occur, once occur such fish trouble, just must be to falling
Fish carries out fishing, needs first to carry out set milling when fish is irregular and is salvaged again, permanent packer must be carried out first
Salvaged again after set milling operation.At present, existing underground fishing operation, majority is salvaged after needing first milling, and need to go into the well ability twice
Complete, take time and effort.Domestic and international existing fishing integrated tool structure is all more complicated, and one is that difficulty of processing is big；Two be to add
Work cost is high；Three be complicated, and operation difficulty is high when using；Four be high to applying the technical requirements of driller people, it is necessary to by special
Industry training could be operated.
The content of the invention
It is an object of the present invention to provide a kind of reversible set milling simple in construction, easy to operate, salvaging efficiency high is salvaged
Integrated apparatus and its Refloatation method, to overcome deficiency of the prior art, the present invention is applied to the set milling of permanent packer
Salvage.
Technical scheme：A kind of reversible covers milling fishing integrated device, including external component and inside portion
Part, described external component is made up of top connection, slips outer barrel and milling shoe, and the internal part is by release ring and slips group
Into the upper end of slips outer barrel is threadedly coupled with top connection, and the lower end of slips outer barrel is connected with milling shoe, is set in slips outer barrel
It is equipped with release ring and slips；The lower end of the release ring is provided with one group of uniform keyway and one group of uniform divider, in divider
Interior lower end be provided with the first semicircular arc boss；One group of second semicircular arc is evenly equipped with the upper end outer wall of the slips convex
Platform, and the arc end of the arc end of the second semicircular arc boss and the first semicircular arc boss is oppositely arranged；Insert the upper end of slips
Enter to discharge in ring, and the second semicircular arc boss on slips is slidably connected with the keyway on release ring.
The intracavity diameter of the release ring lower end is more than the external diameter of the second semicircular arc boss, so that the second the half of slips
Arc cam can rotate in the lumen after entering the inner chamber of release ring.
The lower end of the slips is provided with male cone (strobilus masculinus), and the interior frustum coordinated with the male cone (strobilus masculinus) is provided with slips outer barrel.
The slips lower end inner wall is provided with left-turn spiral tooth.
The milling shoe be impregnated type, inside milling shoe front end, end and outside be respectively welded with hard metal tip
And hard alloy particle.
Meanwhile, the present invention also provides a kind of Refloatation method that milling fishing integrated device is covered for above-mentioned reversible, first
Reversible set milling fishing integrated device is connected to below drilling tool, then transferred at the fish top of underground, and rotary tools, lead to
The milling shoe milling TOF of slips outer barrel lower end is crossed, then proceedes to push drilling tool, the fish after milling is entered in slips,
Now the second semicircular arc boss of slips can be screwed in the inner chamber of release ring, slips is mutually disengaged with release ring, realized
Top drilling tool is freely rotated and slips and fish will not rotate, during milling, the engagement with the fish of slips always tightly, will not
Dropped after making fish milling complete shaft bottom；After whole TOF is complete by milling, above carries drilling tool and carry out fishing, above put forward process
In, during the circular arc end in contact of the second semicircular arc boss on the arc end and slips of the first semicircular arc boss for discharging ring,
Second semicircular arc boss of slips can be slided into the keyway of release ring automatically, and now slips can glide on relative release ring
It is dynamic, then proceed to carry drilling tool, the male cone (strobilus masculinus) of slips lower end is fitted with the inner conical surface in slips outer barrel, slips outer barrel is carried upper
During inner conical surface can force slips firmly firmly grasp fish, you can salvaged fish.
In the above method, when can not salvaging fish, drilling tool is pushed again, salvaging is above proposed again after one section of milling of set, most
When can not all salvage fish eventually, drill string can be pushed, allows the promptly slips of fish and slips outer barrel to unclamp, then slowly rotates forward simultaneously
Drilling tool is above carried, when the second semicircular arc boss of slips is concordant with the first semicircular arc boss for discharging ring, slips and release
Ring formation spline connection, at this moment the moment of torsion of the application of top drilling tool can be delivered on slips, and slips lower end inner wall is provided with a left side
Revolve and carry in helical tooth, rotating forward and slips can be made to exit fish.
Due to using above-mentioned technical proposal, the advantage of the invention is that：The present invention can be grabbed during set milling TOF
Engaging fish carries out set milling and realizes salvaging, and slips grabs engaging fish all the time during set milling, will not in the set complete rear fish of milling
The slips during shaft bottom, and milling that comes off will not together rotate with casing section mill, can guarantee that slips will not be damaged, it is ensured that salvage
Reliability, reduction salvage cost, improve well workover efficiency.In addition, salvage fish it is unsuccessful in the case of, by release ring with
The semicircular arc boss of slips realizes the axial movement of slips with circumferentially rotating, so as to directly exit packaged milling tool and more than
Drilling tool, realize the present apparatus and top drilling tool Safe withdrawing.Therefore, the present invention it is simple to operate, it is easy to use, safe can
Lean on, simplify down-hole operation flow, realize set milling and fishing integrated, improve salvaging efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 Section A-A figure；
Fig. 3 is the assembling structure schematic diagram for discharging ring and slips；
Fig. 4 is the structural representation for discharging ring；
Fig. 5 is the structural representation of slips.
Description of reference numerals：1- top connections, 2- releases ring, 3- slips, 4- slips outer barrel, 5- milling shoes, 6- left-turn spirals
Tooth, 7- keyways, the second semicircular arcs of 8- boss, 9- dividers, 10- the first semicircular arc boss, 11- male cone (strobilus masculinus)s, 12- inner cones
Face, 13- inner chambers.
Embodiment
In order that the object of the invention, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and embodiment is to this hair
It is bright to be described in further detail.
Embodiments of the invention：Reversible cover milling fishing integrated device as shown in Fig. 1~5, including external component and
Internal part, described external component is made up of top connection 1, slips outer barrel 4 and milling shoe 5, and the internal part is by release ring 2
Constituted with slips 3, the upper end of slips outer barrel 4 is threadedly coupled with top connection 1, the lower end of slips outer barrel 4 is connected with milling shoe 5,
Slips outer barrel 4 is internally provided with release ring 2 and slips 3；The lower end of the release ring 2 is provided with one group of uniform keyway 7 and one group
Uniform divider 9, the first semicircular arc boss 10 is provided with the interior lower end of divider 9；On the upper end outer wall of the slips 3
It is evenly equipped with one group of second semicircular arc boss 8, and the arc end of the second semicircular arc boss 8 and the first semicircular arc boss 10
Arc end is oppositely arranged；In the upper end insertion release ring 2 of slips 3, and the second semicircular arc boss 8 on slips 3 and release
Keyway 7 on ring 2 is slidably connected.The diameter of inner chamber 13 of release ring 2 lower end is more than the external diameter of the second semicircular arc boss 8,
So that the second semicircular arc boss 8 of slips 3 can rotate after entering the inner chamber 13 of release ring 2 in inner chamber 13.The card
Watts 3 lower end is provided with male cone (strobilus masculinus) 11, and the interior frustum 12 coordinated with the male cone (strobilus masculinus) 11 is provided with slips outer barrel 4.The card
Watt 3 lower end inner walls are provided with left-turn spiral tooth 6.The milling shoe 5 is impregnated type, inside the front end of milling shoe 5, end and outside
Respectively it is welded with hard metal tip and hard alloy particle.
The operation principle of the present invention：Reversible set milling fishing integrated device is connected to below drilling tool first, then under
It is put at the fish top of underground, and rotary tools, by the milling TOF of milling shoe 5 of the lower end of slips outer barrel 4, then proceed to down
Drilling tool is pressed, the fish after milling is entered in slips 3, now the second semicircular arc boss 8 of slips 3 can screw in release ring 2
Inner chamber 13 in, make slips 3 with release ring 2 mutually disengage, realize that top drilling tool is freely rotated and slips 3 and fish will not revolve
Turn, it is possible to achieve top drilling tool is freely rotated, and slips 3 and fish will not rotate, slips 3 can clamp fish and form one with fish
Body, therefore during set milling, only external tool is in rotation, and slips 3 is in nonrotating state, it is to avoid slips 3 is damaged.In milling
During, the engagement with the fish of slips 3 always tightly, shaft bottom of being dropped after fish milling will not be allowed complete；When whole TOF is ground
After milling is complete, above carry drilling tool carry out fishing, during above carrying, discharge ring 2 the first semicircular arc boss 10 arc end with
During the circular arc end in contact of the second semicircular arc boss 8 on slips 3, the second semicircular arc boss 8 of slips 3 can be slided into automatically
In the keyway 7 for discharging ring 2, now slips 3 relative can discharge ring 2 and slide up and down, and then proceed to carry drilling tool, make under slips 3
The male cone (strobilus masculinus) 11 at end is fitted with the inner conical surface 12 in slips outer barrel 4, it is upper carry slips outer barrel 4 during inner conical surface 12 can force
Slips 3 firmly firmly grasps fish, you can salvaged fish.
When can not salvaging fish, drilling tool is pushed again, salvaging is above proposed again after one section of milling of set, finally can not all salvaged
When playing fish, drill string can be pushed, allow promptly the slips 3 of fish unclamped with slips outer barrel 4, then slowly rotating forward and above carry drilling tool,
When the second semicircular arc boss 8 of slips 3 is concordant with the first semi arch boss 10 for discharging ring 2, slips 3 and the release shape of ring 2
Into spline connection, at this moment the moment of torsion of the application of top drilling tool can be delivered on slips 3, and the lower end inner wall of slips 3 is provided with left-handed
Being carried in helical tooth 6, rotating forward can make slips 3 exit fish.
Claims (7)
1. a kind of reversible covers milling fishing integrated device, including external component and internal part, described external component by
Top connection (1), slips outer barrel (4) and milling shoe (5) composition, the internal part are made up of release ring (2) and slips (3), its
It is characterised by：The upper end of slips outer barrel (4) is threadedly coupled with top connection (1), and the lower end of slips outer barrel (4) is connected with milling shoe
(5) release ring (2) and slips (3), are internally provided with slips outer barrel (4)；It is described release ring (2) lower end be provided with one group it is equal
Cloth keyway (7) and one group of uniform divider (9), the first semicircular arc boss (10) is provided with the interior lower end of divider (9)；
It is evenly equipped with one group of second semicircular arc boss (8) on the upper end outer wall of the slips (3), and the second semicircular arc boss (8)
The arc end of arc end and the first semicircular arc boss (10) is oppositely arranged；In the upper end insertion release ring (2) of slips (3), and
And the second semicircular arc boss (8) on slips (3) is slidably connected with the keyway (7) on release ring (2).
2. cover milling fishing integrated device according to the reversible described in claim 1, it is characterised in that：Described release ring (2) lower end
Inner chamber (13) diameter be more than the second semicircular arc boss (8) external diameter.
3. cover milling fishing integrated device according to the reversible described in claim 1, it is characterised in that：The lower end of the slips (3)
Male cone (strobilus masculinus) (11) is provided with, the interior frustum (12) coordinated with the male cone (strobilus masculinus) (11) is provided with slips outer barrel (4).
4. reversible according to claim 1 covers milling fishing integrated device, it is characterised in that：Slips (3) lower end
Inwall is provided with left-turn spiral tooth (6).
5. reversible according to claim 1 covers milling fishing integrated device, it is characterised in that：The milling shoe (5) is
Impregnated type, inside milling shoe (5) front end, end and outside be respectively welded with hard metal tip and hard alloy particle.
6. a kind of reversible for described in Claims 1 to 5 any one covers the Refloatation method of milling fishing integrated device, its
It is characterised by：Reversible set milling fishing integrated device is connected to below drilling tool first, then transferred at the fish top of underground,
And rotary tools, by milling shoe (5) milling TOF of slips outer barrel (4) lower end, then proceed to push drilling tool, make milling
Fish afterwards enters in slips (3), and now the second semicircular arc boss (8) of slips (3) can screw in the inner chamber of release ring (2)
(13) in, slips (3) is mutually disengaged with release ring (2), realize that top drilling tool is freely rotated and slips (3) and fish will not revolve
Turn, during milling, the engagement with the fish of slips (3) always tightly, shaft bottom of being dropped after fish milling will not be allowed complete；Fall when entirely
Top of fish portion by milling it is complete after, above carry drilling tool carry out fishing, during above carrying, release ring (2) the first semicircular arc boss
(10) during the circular arc end in contact of arc end and the second semicircular arc boss (8) on slips (3), the second semicircle of slips (3)
Arc boss (8) can be slided into the keyway (7) of release ring (2) automatically, and now slips (3) relative can be discharged above and below ring (2)
Slide, then proceed to carry drilling tool, the male cone (strobilus masculinus) (11) and the inner conical surface (12) in slips outer barrel (4) for making slips (3) lower end are pasted
Close, it is upper carry slips outer barrel (4) during inner conical surface (12) can force slips (3) firmly firmly grasp fish, you can salvaging rise and fall
Fish.
7. reversible according to claim 1 covers the Refloatation method of milling fishing integrated device, it is characterised in that：Work as salvaging
When not playing fish, push drilling tool again, salvaging above proposed again after one section of milling of set, when finally can not all salvage fish, can under
Drill string is pressed, allows the promptly slips (3) of fish and slips outer barrel (4) to unclamp, then slowly rotates forward and above carry drilling tool, when slips (3)
The second semicircular arc boss (8) with release ring (2) the first semicircular arc boss (10) it is concordant when, slips (3) with discharge ring
(2) spline connection is formed, at this moment the moment of torsion of the application of top drilling tool can be delivered on slips (3), and slips (3) lower end inner wall is set
Having put to carry in left-turn spiral tooth (6), rotating forward can make slips (3) exit fish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678518.4A CN107288567B (en) | 2017-08-10 | 2017-08-10 | Retractable type milling and fishing integrated device and fishing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678518.4A CN107288567B (en) | 2017-08-10 | 2017-08-10 | Retractable type milling and fishing integrated device and fishing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107288567A true CN107288567A (en) | 2017-10-24 |
| CN107288567B CN107288567B (en) | 2023-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710678518.4A Active CN107288567B (en) | 2017-08-10 | 2017-08-10 | Retractable type milling and fishing integrated device and fishing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107288567B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425652A (en) * | 2018-01-17 | 2018-08-21 | 中国石油化工股份有限公司 | Milling guide shoe and the fishing socket for using the milling guide shoe |
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
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|---|---|---|---|---|
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| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
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| Publication number | Publication date |
|---|---|
| CN107288567B (en) | 2023-04-07 |
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