CN108397152A - Device is cut outside closed oil pipe - Google Patents
Device is cut outside closed oil pipe Download PDFInfo
- Publication number
- CN108397152A CN108397152A CN201810249633.4A CN201810249633A CN108397152A CN 108397152 A CN108397152 A CN 108397152A CN 201810249633 A CN201810249633 A CN 201810249633A CN 108397152 A CN108397152 A CN 108397152A
- Authority
- CN
- China
- Prior art keywords
- revolving body
- cutter
- cutting
- shell
- cutting knife
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010913 used oil Substances 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/007—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-retracting cutter rotating outside the pipe
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sawing (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Device, which is cut, outside closed oil pipe is related to technical field of petroleum machinery, including shell（1）Be located at shell（1）Interior revolving body component, shell（1）It is equipped with driving device（2）Pass through gear（3）It is connect with revolving body component, drives it in shell（1）Interior rotation, for revolving body component in being equipped with resistance elements and cutting assembly in barrel chamber, resistance elements include resistance cylinder（4）, friction plate（5）, pressure spring（6）With friction hub（7）, cutting assembly includes cutting knife cylinder（8）, cutter bar（9）And cutter（10）, cutting knife cylinder（8）With friction hub（7）It connects and rotates with it, cutter bar（9）One end is hinged on cutting knife cylinder（8）Outside and with cutting knife cylinder（8）Rotation, it has the advantages that reasonable design, good cutting effect, work efficiency is high, safe and reliable, can be used for workover rig workover treatment with pressure, is installed on when use that workover operation device high pressure section with pressure is interior, between two groups of preventers.
Description
Technical field
The present invention relates to technical field of petroleum machinery, and in particular to cuts device outside a kind of closed oil pipe.
Background technology
Operation device under pressure annular space sealing technique accomplishes mature and reliable, but the multiple underground works in shaft bottom in operation substantially at present
The interior choked technique of tool is difficult point always.Domestic unit develops returnable fishing spear blanking plug cooperation blind rams and pours out without interior blocking
Downhole tool work flow, in the lowermost blanking plug Operating Pressure accomplished below；This work flow is required in equipment height
It presses and an oil pipe port that can use the salvaging of returnable fishing spear blanking plug and closed upper end is provided in inner cavity, this requires works with pressure
Industry device can carry out shackle in device high pressure lumen to specified connector, or directly position needed to cut off oil pipe pipe
Column.
Oil pipe upper end is necessarily in closed state when due to Operating Pressure（Otherwise with regard to blowout）, therefore tradition can not be used
Oil pipe internal cutter carry out cutting operation, can only operation device under pressure high pressure lumen be arranged cutter device complete cutting operation.
Invention content
The technical problem to be solved by the present invention is to：In view of the above-mentioned problems, providing device is cut outside a kind of closed oil pipe.
Technical solution of the invention is：Cut device outside closed oil pipe, including shell and the revolution that is located in shell
Body component, shell are connect by gear with revolving body component equipped with driving device, drive it to be rotated in shell, revolving body group
Part is cylindrical body, and revolving body component includes resistance cylinder, friction in being equipped with resistance elements and cutting assembly, resistance elements in barrel chamber
Piece, pressure spring and friction hub, resistance cylinder are connect with shell, and resistance cylinder is connect with friction hub by friction plate, and pressure spring supports
Press to it on friction plate, cutting assembly includes cutting knife cylinder, cutter bar and cutter, cutting knife cylinder be provided with for cutter by cut
Knife window, cutting knife cylinder connect and rotate with it with friction hub, and cutter bar one end is hinged on outside cutting knife cylinder and is rotated with cutting knife cylinder, cuts
Knife is located at the free end of cutter bar, and the interlude of cutter bar is equipped with cutter driving idler wheel, and the barrel chamber wall of revolving body component, which is equipped with, to be driven
Dynamic slope surface coordinates with cutter driving idler wheel, to drive cutter bar to keep cutter close to center.
The solution have the advantages that：It has that reasonable design, good cutting effect, work efficiency is high, safe and reliable excellent
Point, can be used for workover rig workover treatment with pressure, and when use is installed in workover operation device high pressure section with pressure, two groups of preventers
Between.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is cutter of the present invention and the structural schematic diagram of cutting knife cylinder；
Fig. 3 is the structural schematic diagram that revolving body of the present invention, cutter drive slope surface with it；
Fig. 4 is the structural schematic diagram of cutter return slot of the present invention.
Specific implementation mode
As shown in Figures 1 to 4, device, including shell 1 and the revolving body component being located in shell 1, shell are cut outside closed oil pipe
Body 1 is connect by gear 3 with revolving body component equipped with driving device 2, it is driven to be rotated in shell 1, and revolving body component is
Cylindrical body, revolving body component in barrel chamber be equipped with resistance elements and cutting assembly, resistance elements include resistance cylinder 4, friction plate 5,
Spring 6 press with friction hub 7, resistance cylinder 4 is connect with shell 1, and resistance cylinder 4 is connect with friction hub 7 by friction plate 5, and press bullet
Spring 6 is against on friction plate 5 to it and presses, and cutting assembly includes cutting knife cylinder 8, cutter bar 9 and cutter 10, and cutting knife cylinder 8, which is provided with, to be used for
Cutter 10 by cutter window 11, cutting knife cylinder 8 connect and rotates with it with friction hub 7, and 9 one end of cutter bar is hinged on cutting knife cylinder
It is rotated outside 8 and with cutting knife cylinder 8, cutter 10 is located at the free end of cutter bar 9, and the interlude of cutter bar 9 is equipped with cutter driving idler wheel
12, the barrel chamber wall of revolving body component is equipped with driving slope surface 13 and coordinates with cutter driving idler wheel 12, to drive cutter bar 9 to make cutter
10 is close to center.
The barrel chamber wall of the revolving body component is equipped with cutter return slot 14, and the cutter bar 9, which is equipped with, stretches into righting time
The cutter return portion 15 of position slot 14, during revolving body component and cutting knife cylinder 8 relatively rotate, cutter bar 9 is returned by cutter
Position slot 14 makes 9 return of cutter bar with the cooperation of cutter return portion 15.Return mode can also use the conventional structures such as resetting spring.
The revolving body component includes revolving body upper cover 16, revolving body 17 and revolving body lower cover 18, and revolving body upper cover 16 is returned
Swivel 17 and revolving body lower cover 18 are from top to bottom arranged and are removably joined together, and the resistance elements are located on revolving body
Lid 16, cutting assembly are located at revolving body 17, and driving slope surface 13 is located at 17 inner wall of revolving body, and cutter return slot 14 is located on revolving body
18 end face of lid 16 and/or revolving body lower cover.
The driving device 2 is hydraulic motor.
Closed oil pipe cutter belongs to oil and gas industry equipment special, drills through device type, and inner cavity is high pressure work
Make chamber, pressure medium in well when shell needs that operation can be carried.In the inner cavity of high-tension apparatus, the specified section of tubular column string is cut off
Operation.Cut-out operation needs the safety slip of lower part preventer group, the travelling on top or stationary slip to fix by Pipe Cutting when carrying out
Column.
Shell is made of upper shell, lower housing and the connecting flange as end cap that is located on upper shell, forms an envelope
Inner cavity closing, can carrying pressure, connecting flange are fixedly connected by locking plate with upper shell.Between upper shell and lower housing
It is fixed with bolt.Resistance cylinder is connect by spline with connecting flange.The outer diameter face of revolving body carries teeth, passes through gear and motor
Connection.
Resistance portion is by the friction hub for setting internal tooth, the resistance cylinder for setting external tooth, the friction plate lower cover being fixed under resistance cylinder, outer
Tooth friction plate, internal toothed friction plate, the thrust external tooth friction plate for setting spring fitting groove, compressed spring, the friction plate being pressed on spring
Upper cover, circlip for hole are constituted, and job specification is the multiplate clutch of a set of fixed resistance（Referring to Fig. 1）.On resistance cylinder
Portion's tooth is engaged with the connecting flange of upper shell to keep not rotating, and its underpart tooth is engaged with internal toothed friction plate, bottom and friction plate
It is fixed with bolt between lower cover.These parts do not rotate at work, constitute the fixation kit of clutch.
Friction hub inner upper is threaded and grooving, and friction plate upper cover carries external screw thread, and being screwed into after friction hub can be with
Spiral compression spring is compressed, is packed into circlip for hole in the slot of friction hub later, to limit the highest order of friction plate upper cover
It sets, avoids loosening.These parts can be pushed at work by cutter assembly to rotate, and constitutes the rotary components of clutch.
By the quantity or material that adjust external tooth friction plate, internal toothed friction plate, thus it is possible to vary friction area；It is pressed by adjusting
The size and quantity of contracting spring, thus it is possible to vary the contact between friction plate.Two kinds of adjusting methods determine that resistance portion provides
Resistive torque size.
There is slope cavity structure inside revolving body, have multigroup cutter to promote curve in the cavity of slope, every curve is by delaying
Slope arc section, abrupt slope straightway（Drive slope surface）And transition arc between the two is constituted, the abrupt slope straightway back side pushes away for withdrawing
Power section.Abrupt slope straightway and the straight line angle at an acute angle by the part theory center of circle, cutting feed act all in abrupt slope straight line
Section is completed.
When cutting operation, rotary drive assembly pushes cutting drive component rotation, at this time resistance in work package slit
Partial frictional drag effects, the entire work package that cuts do not rotate, and the slope cavity pushing rolling wheels of revolving body are transported to center of circle direction
Dynamic, the cutter of knife bar mounting base and its front end installation is moved to center of circle direction at faster speed.
In the point of a knife of cutter and when being cut column surface and contacting, slope cavity and idler wheel contact surface are abrupt slope straight lines at this time
Section, abrupt slope straightway can resolve into two component to the thrust of idler wheel：To the thrust in the part center of circle, to contact point circumferencial direction
Thrust, due to abrupt slope straightway with by the straight line angle at an acute angle in the part theory center of circle, be less than to the thrust in the center of circle
To the thrust of contact point circumferencial direction；Since the point of a knife of cutter is not readvanced by tubing string blocking, the drive of rotary drive assembly
Power is begun to ramp up, until overcoming the frictional resistance of resistance portion in cutting work package, cutter assembly drives resistance part at this time
Separation clutch rotary components start to rotate.Start the point of a knife of cutter after rotating to by two power of Pipe Cutting column while application, as cutting
Two cutting force of disconnected operation：It is to cut radial feed power to the thrust in the center of circle, the thrust to contact point circumferencial direction is
Main cutting force, and the resistive torque that resistance portion provides is being the minimum cutting radial feed of system to the component in center of circle direction
Power, the driving force that rotary drive assembly provides remaining power after overcoming resistance assembly torque is main cutting force.
Claims (4)
1. cutting device, including shell outside closed oil pipe（1）Be located at shell（1）Interior revolving body component, shell（1）It is equipped with
Driving device（2）Pass through gear（3）It is connect with revolving body component, drives it in shell（1）Interior rotation, revolving body component are tubular
Body, for revolving body component in being equipped with resistance elements and cutting assembly in barrel chamber, resistance elements include resistance cylinder（4）, friction plate（5）、
Press spring（6）With friction hub（7）, resistance cylinder（4）With shell（1）Connection, resistance cylinder（4）With friction hub（7）Pass through friction plate
（5）Connection, press spring（6）It is against friction plate（5）On to its press, cutting assembly includes cutting knife cylinder（8）, cutter bar（9）With
Cutter（10）, cutting knife cylinder（8）It is provided with and is used for cutter（10）By cutter window（11）, cutting knife cylinder（8）With friction hub（7）Connection
And it rotates with it, cutter bar（9）One end is hinged on cutting knife cylinder（8）Outside and with cutting knife cylinder（8）Rotation, cutter（10）It is located at cutter bar
（9）Free end, cutter bar（9）Interlude be equipped with cutter driving idler wheel（12）, the barrel chamber wall of revolving body component, which is equipped with, to be driven
Slope surface（13）With cutter driving idler wheel（12）Cooperation, to drive cutter bar（9）Make cutter（10）It is close to center.
2. cutting device outside closed oil pipe as described in claim 1, which is characterized in that on the barrel chamber wall of the revolving body component
Equipped with cutter return slot（14）, the cutter bar（9）It is equipped with and stretches into righting return slot（14）Cutter return portion（15）, returning
Swivel component and cutting knife cylinder（8）During relative rotation, cutter bar（9）Pass through cutter return slot（14）With cutter return portion
（15）Cooperation makes cutter bar（9）Return.
3. cutting device outside closed oil pipe as claimed in claim 2, which is characterized in that the revolving body component includes revolving body
Upper cover（16）, revolving body（17）With revolving body lower cover（18）, revolving body upper cover（16）, revolving body（17）With revolving body lower cover（18）
From top to bottom it is arranged and is removably joined together, the resistance elements is located at revolving body upper cover（16）, cutting assembly is located at
Revolving body（17）, drive slope surface（13）It is located at revolving body（17）Inner wall, cutter return slot（14）It is located at revolving body upper cover（16）With/
Or revolving body lower cover（18）End face.
4. cutting device outside closed oil pipe as claimed in claim 1,2 or 3, which is characterized in that the driving device（2）For liquid
Pressure motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249633.4A CN108397152B (en) | 2018-03-26 | 2018-03-26 | Enclosed oil pipe external cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249633.4A CN108397152B (en) | 2018-03-26 | 2018-03-26 | Enclosed oil pipe external cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108397152A true CN108397152A (en) | 2018-08-14 |
| CN108397152B CN108397152B (en) | 2024-02-13 |
Family
ID=63093150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810249633.4A Active CN108397152B (en) | 2018-03-26 | 2018-03-26 | Enclosed oil pipe external cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397152B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110908A (en) * | 2021-03-23 | 2022-09-27 | 中国石油天然气集团有限公司 | Downhole oil pipe under-pressure cutting tool and cutting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010050168A1 (en) * | 2000-06-09 | 2001-12-13 | Oil Lift Technology Inc. | Pump drive head with stuffing box |
| WO2006051324A1 (en) * | 2004-11-13 | 2006-05-18 | Hunting Cromar Limited | Device for cutting a downhole object |
| KR100646449B1 (en) * | 2005-12-14 | 2006-11-15 | 한국기초과학지원연구원 | Portable detailed circle cutter |
| CA2928724A1 (en) * | 2013-10-29 | 2015-05-07 | Transocean Innovation Labs, Ltd | Subsea pipe cutting apparatuses and related methods |
| CN204532192U (en) * | 2015-01-23 | 2015-08-05 | 中国石油天然气股份有限公司 | Well head area is pressed to cut and is decomposed drilling tool device |
| CN208267807U (en) * | 2018-03-26 | 2018-12-21 | 杨颖辉 | Device is cut outside closed oil pipe |
-
2018
- 2018-03-26 CN CN201810249633.4A patent/CN108397152B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010050168A1 (en) * | 2000-06-09 | 2001-12-13 | Oil Lift Technology Inc. | Pump drive head with stuffing box |
| WO2006051324A1 (en) * | 2004-11-13 | 2006-05-18 | Hunting Cromar Limited | Device for cutting a downhole object |
| KR100646449B1 (en) * | 2005-12-14 | 2006-11-15 | 한국기초과학지원연구원 | Portable detailed circle cutter |
| CA2928724A1 (en) * | 2013-10-29 | 2015-05-07 | Transocean Innovation Labs, Ltd | Subsea pipe cutting apparatuses and related methods |
| CN204532192U (en) * | 2015-01-23 | 2015-08-05 | 中国石油天然气股份有限公司 | Well head area is pressed to cut and is decomposed drilling tool device |
| CN208267807U (en) * | 2018-03-26 | 2018-12-21 | 杨颖辉 | Device is cut outside closed oil pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110908A (en) * | 2021-03-23 | 2022-09-27 | 中国石油天然气集团有限公司 | Downhole oil pipe under-pressure cutting tool and cutting method thereof |
| CN115110908B (en) * | 2021-03-23 | 2024-04-05 | 中国石油天然气集团有限公司 | Underground oil pipe pressurized cutting tool and cutting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108397152B (en) | 2024-02-13 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant |