CN107780861A - Casing damaged well diameter enlarging instrument - Google Patents
Casing damaged well diameter enlarging instrument Download PDFInfo
- Publication number
- CN107780861A CN107780861A CN201710885959.1A CN201710885959A CN107780861A CN 107780861 A CN107780861 A CN 107780861A CN 201710885959 A CN201710885959 A CN 201710885959A CN 107780861 A CN107780861 A CN 107780861A
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- CN
- China
- Prior art keywords
- cylinder
- piston rod
- wall
- moving spring
- ball
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 8
- 210000000515 tooth Anatomy 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000013001 point bending Methods 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005713 exacerbation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray 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
-
- 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
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
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)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of casing damaged well diameter enlarging instrument, and it includes hydraulic pressure expander（1）With hydraulic pressure ball righting topping machanism（2）, hydraulic pressure expander（1）Include top connection（11）, cylinder（12）, piston rod（13）, back-moving spring（14）With several cutter hubs（15）, piston rod is axially mounted in cylinder, and back-moving spring is sleeved on piston rod, cylinder（12）Side wall is provided with several cutter grooves（17）, each cutter hub（15）Upper end is respectively hinged at cylinder（12）On；Hydraulic pressure ball righting topping machanism（2）Include top connection one（21）, hydraulic cylinder（22）, cylinder one（23）, lower contact（24）, piston head（25）, core pipe（26）, back-moving spring one（27）, aggravate stub boring quickly（28）And cutting element（29）.It can thorough cleaning oil field oil, the sleeve pipe of multi-point bending deformation and casing-broken displacement deformation in well, make the top and bottom of borehole wall sleeve pipe still on the axis of former well.
Description
Technical field
The present invention relates to petroleum tool, and in particular to the casing damaged well diameter enlarging instrument in a kind of big well workover engineering in oil field.
Background technology
" technical research of casing damaged well diameter enlarging " is the scientific research project of the big well workover engineering in oil field, during the last ten years many oil fields
Scientific research technical staff have developed various instruments and be tackled key problems, but until this current technology is not still resolved, especially
It is the technical barrier of " sleeve pipe multi-point bending well " and " casing-broken is without passage well " diameter enlarging, does not still attack thoroughly at present
It is broken.
The content of the invention
Being capable of thorough cleaning oil field oil, multi-point bending deformation and casing-broken in well it is an object of the invention to provide one kind
The sleeve pipe of deformation is shifted, makes casing damaged well diameter enlarging work of the top and bottom of borehole wall sleeve pipe still on the axis of former well
Tool.
The present invention technical solution be：It includes hydraulic pressure expander and hydraulic pressure ball righting topping machanism, hydraulic pressure
Expander includes top connection, cylinder, piston rod, back-moving spring and several cutter hubs, the lower end of top connection by screw thread with
The top axial of cylinder is connected, and piston rod is located at being arranged on axially below in cylinder for top connection, the outer wall of piston rod upper end
The outward flange for the sealing cooperation that slid axially with cylinder inboard wall is provided with, back-moving spring, which is located at below outward flange, is sleeved on piston rod
To go up and be located in cylinder, the upper end of back-moving spring is engaged with the lower surface of outward flange, lower end is engaged with the inner face of cylinder,
Several cutter grooves are provided with cylinder lateral wall between back-moving spring lower end and cylinder lower end vertically, each cutter hub is located at cutter groove respectively
Interior, upper end is respectively hinged on cylinder, and the middle and lower part of each cutter hub is engaged with the lower end of piston rod to be stretched out when piston rod glides
Outside to cutter groove, on the piston rod slide when retraction cutter groove in；Hydraulic pressure ball righting topping machanism include top connection one, hydraulic cylinder,
Cylinder one, lower contact, piston head, core pipe, back-moving spring one, exacerbation stub boring quickly pass through with cutting element, the lower end of top connection one
Screw thread is connected with the top axial of hydraulic cylinder, and the lower end of hydraulic cylinder is connected by screw thread with the top axial of cylinder one, cylinder one
Lower end be connected by screw thread with the top axial of lower contact, the lower end of lower contact passes through screw thread with aggravating the upper shaft of stub boring quickly
To being connected, aggravate the lower end of stub boring quickly and be connected by screw thread with the top axial of cutting element, the lower end of cutting element, which is provided with, cuts
Cut head, lower section, outer wall and the hydraulic pressure inside wall of cylinder sealing that slides axially that piston head is located at top connection one coordinate, and the upper end of core pipe passes through
Screw thread and piston head are axially connected, lower end is axially sleeved ikn hydraulic cylinder and cylinder one in, back-moving spring one is located under piston head
Square set is in the core pipe and in hydraulic cylinder, and the upper end of back-moving spring one is engaged with the lower surface of piston head, lower end and liquid
The inner face of cylinder pressure is engaged, axially-spaced on the core tube wall in hydraulic cylinder to offer several ball brackets, respectively
Some circumferential annular slide tracks are respectively equipped with the outer wall of ball bracket, each annular slide track opposite position with each ball bracket
The outer wall of cylinder one on be respectively equipped with several outer small interior big ball eyelets, each ball hole intraocular is respectively equipped with ball.
The solution have the advantages that：It being capable of thorough cleaning oil field oil, multi-point bending deformation and casing-broken in well
The sleeve pipe of deformation is shifted, makes the top and bottom of borehole wall sleeve pipe still on the axis of former well.It is easy to use, work effect
Rate is high, can effectively solve the technical barrier of sleeve pipe multi-point bending well and casing-broken without passage well diameter enlarging, follow-up to ensure
Well-repairing work is smoothed out, and pioneering role is played for oil field oil, the reparation of well.
The present invention design considerations be：Borehole wall sleeve pipe, all cannula center axis from well head to shaft bottom are consistent, no matter
Any section deformation of borehole wall sleeve pipe, as long as the sleeve pipe of this section of deformation is cut off by former well orbit of shaft center, remaining sleeve upper end and
Lower end axis is still constant., in the strained sleeve pipe of cutting casing damaged well section, it rotates the Cutting trajectory moved down, it is necessary to protects for it
Card has consistent with casing damaged well Central Plains borehole axis.
Brief description of the drawings
Fig. 1 is hydraulic pressure expander axial sectional view of the embodiment of the present invention；
Fig. 2 is hydraulic pressure ball righting topping machanism axial sectional view of the embodiment of the present invention.
Embodiment
As shown in Figure 1 and Figure 2, it includes hydraulic pressure expander 1 and hydraulic pressure ball righting topping machanism 2, hydraulic pressure expander
1, which includes top connection 11, cylinder 12, piston rod 13, back-moving spring 14 and several cutter hubs 15, the lower end of top connection 11, passes through spiral shell
Line is connected with the top axial of cylinder 12, and piston rod 13 is located at being arranged on axially below in cylinder 12 for top connection 11, piston rod
The outer wall of 13 upper ends is provided with the outward flange 16 for the sealing cooperation that slid axially with the inwall of cylinder 12, and back-moving spring 14 is located at evagination
The lower section of edge 16 is sleeved on piston rod 13 and in cylinder 12, the upper end of back-moving spring 14 and the lower surface phase of outward flange 16
Cooperation, lower end are engaged with the inner face of cylinder 12, in the side wall of cylinder 12 between the lower end of back-moving spring 14 and the lower end of cylinder 12
Several cutter grooves 17 are provided with vertically, and each cutter hub 15 is located in cutter groove 17 respectively, upper end is respectively hinged on cylinder 12, each cutter hub
15 middle and lower part, which is engaged with the lower end of piston rod 13 when piston rod 13 glides, to be reached outside cutter groove 17, is slided on piston rod 13
When retraction cutter groove 17 in；Hydraulic pressure ball righting topping machanism 2 includes top connection 1, hydraulic cylinder 22, cylinder 1, lower contact
24th, piston head 25, core pipe 26, back-moving spring 1, aggravate stub boring quickly 28 and cutting element 29, the lower end of top connection 1 pass through
Screw thread is connected with the top axial of hydraulic cylinder 22, and the lower end of hydraulic cylinder 22 is connected by screw thread with the top axial of cylinder 1,
The lower end of cylinder 1 is connected by screw thread with the top axial of lower contact 24, and the lower end of lower contact 24 is short by screw thread and exacerbation
The top axial of drill collar 28 is connected, aggravate stub boring quickly 28 lower end be connected by screw thread with the top axial of cutting element 29, cut
The lower end for cutting instrument 29 is provided with cutting head 30, and piston head 25 is located at lower section, outer wall and the inwall axle of hydraulic cylinder 22 of top connection 1
Coordinate to being slidingly sealed, the upper end of core pipe 26 by screw thread and piston head 25 it is axial be connected, lower end is axially sleeved ikn hydraulic cylinder 22
In cylinder 1, the lower section that back-moving spring 1 is located at piston head 25 is sleeved in core pipe 26 and in hydraulic cylinder 22, multiple
The upper end of position spring 1 is engaged with the lower surface of piston head 25, lower end is engaged with the inner face of hydraulic cylinder 22, positioned at liquid
It is axially-spaced on the outer wall of core pipe 26 in cylinder pressure 22 to offer several ball brackets 31, divide on the outer wall of each ball bracket 31
She You not be outside some circumferential annular slide tracks 32, with the cylinder 1 of the opposite position of each annular slide track 32 of each ball bracket 31
Several outer small interior big ball eyelets 33 are respectively equipped with wall, ball 34 is respectively equipped with each ball eyelet 33.
Axially there is through hole on piston rod 13, be provided with nozzle in the aperture of the upper end of piston rod 13, nozzle location is provided with down
End is inserted into the pressure regulator valve 18 in nozzle, and the outer wall of pressure regulator valve 18 of the top of piston rod 13, which is provided with, axially there are several drains to lead to
The mounting ring in hole, it is fastened between the lower surface of top connection 11 and cylinder 12 outside mounting ring.Outside the outward flange 16 of piston rod 13
Wall is provided with two seals ring recess, and the sealing ring being engaged with the inwall of cylinder 12 is separately installed with each seal groove.Piston rod
13 lower end is provided with the upper coarse and lower fine nose cone being engaged with the side at the middle and lower part of cutter hub 15 towards the center of cylinder 12.
The top of each cutter groove 17 of cylinder 12 be respectively equipped with by bolt be arranged on cylinder 12 on tool rest 19, cutter hub 15 it is upper
By hinge on tool rest 19, being respectively arranged below with for each cutter groove 17 of cylinder 12 plays position-limiting action to the lower end of cutter hub 15 at end
Limited block 20, each limited block 20 respectively by bolt be arranged on cylinder 12 on.
The lower semisection of cutter hub 15 is welded with several cutting tooths towards the side outside cylinder 12, set towards the side of body centre
There is the evagination arcwall face that the lower end with piston rod 13 is engaged.
The bottom of cylinder 12 is set with protective cap.
Piston head 25 is provided with the axial center hole being connected with core pipe 26, and spray is provided with the aperture of the upper end of piston head 25
Mouth one, the choke valve 35 that lower end is inserted into nozzle one is provided between top connection 1 and piston head 25, on piston head 25
The outer wall of choke valve 35 of side is provided with the outer bulge loop axially with several drain through holes, and top connection is fastened on outside outer bulge loop
Between one 21 lower surfaces and hydraulic cylinder 22.
The upper half of annular slide track 32 of each ball bracket 31 has respectively is oriented to the conical surface.The outer wall of piston head 25 is provided with two
Road seal groove, is separately installed with the sealing ring that cooperation is mutually sealed with the inwall of hydraulic cylinder 22 in each seal groove, under piston head 25
The side wall of hydraulic cylinder 22 below end face is radially provided with relief hole 36.
The diameter of the big cutting element 29 square thereon of the diameter of cutting head 30 of cutting element 29, the lower surface of cutting head 30 and side
Face is respectively equipped with cutting edge.
Operation principle：
Being connected down first by hydraulic pressure expander 1 with drilling rod extremely needs expanding well location, after rotary tools, starts pump pressure, hydraulic thrust
Piston bar 13 moves down, and the lower end of piston rod 13 promotes the lower semisection back side of cutter hub 15 cutting tooth on cutter hub 15 is reached cylinder
Outside 12, buildup and jam on the borehole wall are machined away under the turning effort of drilling tool, is pulled out of hole after casing gauge circle.
Then hydraulic pressure ball righting topping machanism 2 is removed to the casing section after rule circle with drilling tool one, after rotation drilling tool,
It is ascending to start pump pressure.Now pump pressure promotes the compression reseting spring 1 of piston head 25 of hydraulic pressure ball erection device 2 to promote
Core pipe 26 and each ball bracket 31 are descending in cylinder 1, force on the annular slide track 32 and cylinder 1 on ball bracket 31
Corresponding spin eyelet 33 misplaces, each ball hole in the whole push in cylinder 1 of ball 34 being contained in annular slide track 32
In eye 33.The 1/4 of the diameter of ball 34 is exposed to outside cylinder 1, is close to internal surface of sleeve pipe, and drilling tool, which drives, to be aggravated stub boring and quickly 28 and cut
Cut instrument 29 to rotate, together cut under the centralizing function of ball 34 in sleeve pipe axis.Hydraulic pressure ball righting topping machanism 2 is tight
The sleeve pipe of cutting deformation is moved down close to internal surface of sleeve pipe righting rotation.After the sleeve pipe cutting of damage terminates, termination of pumping, back-moving spring 1
Piston head 25, core pipe 26 and ball bracket 31 is set to pop into position together, it is now no longer exposed in each retraction cylinder 1 of ball 34
To outside cylinder 1, then hydraulic pressure ball righting topping machanism 2 is mentioned on well with drilling tool, the course of work terminates.
Claims (10)
1. casing damaged well diameter enlarging instrument, it includes hydraulic pressure expander（1）With hydraulic pressure ball righting topping machanism（2）, its feature
It is：Hydraulic pressure expander（1）Include top connection（11）, cylinder（12）, piston rod（13）, back-moving spring（14）And several
Cutter hub（15）, top connection（11）Lower end pass through screw thread and cylinder（12）Top axial be connected, piston rod（13）Positioned above connecing
Head（11）Be arranged on cylinder axially below（12）It is interior, piston rod（13）The outer wall of upper end is provided with and cylinder（12）Inwall axle
To the outward flange for being slidingly sealed cooperation（16）, back-moving spring（14）Positioned at outward flange（16）Lower section be sleeved on piston rod（13）On
And it is located at cylinder（12）It is interior, back-moving spring（14）Upper end and outward flange（16）Lower surface be engaged, lower end and cylinder（12）
Inner face be engaged, back-moving spring（14）Lower end and cylinder（12）Cylinder between lower end（12）If it is provided with vertically in side wall
Dry cutter groove（17）, each cutter hub（15）It is located at cutter groove respectively（17）Interior, upper end is respectively hinged at cylinder（12）On, each cutter hub（15）
Middle and lower part and piston rod（13）Lower end be engaged in piston rod（13）Cutter groove is reached during downslide（17）Outside, in piston rod
（13）Retraction cutter groove when upper sliding（17）It is interior；Hydraulic pressure ball righting topping machanism（2）Include top connection one（21）, hydraulic cylinder
（22）, cylinder one（23）, lower contact（24）, piston head（25）, core pipe（26）, back-moving spring one（27）, aggravate stub boring quickly（28）
And cutting element（29）, top connection one（21）Lower end pass through screw thread and hydraulic cylinder（22）Top axial be connected, hydraulic cylinder
（22）Lower end pass through screw thread and cylinder one（23）Top axial be connected, cylinder one（23）Lower end pass through screw thread and lower contact
（24）Top axial be connected, lower contact（24）Lower end by screw thread with aggravate stub boring quickly（28）Top axial be connected, add
Weight stub boring is quickly（28）Lower end pass through screw thread and cutting element（29）Top axial be connected, cutting element（29）Lower end be provided with
Cutting head（30）, piston head（25）Positioned at top connection one（21）Lower section, outer wall and hydraulic cylinder（22）Inwall slides axially sealing
Coordinate, core pipe（26）Upper end pass through screw thread and piston head（25）Axially it is connected, lower end is axially sleeved ikn hydraulic cylinder（22）And cylinder
Body one（23）It is interior, back-moving spring one（27）Positioned at piston head（25）Lower section be sleeved on core pipe（26）Go up and be located at hydraulic cylinder（22）
It is interior, back-moving spring one（27）Upper end and piston head（25）Lower surface be engaged, lower end and hydraulic cylinder（22）Inner face phase
Coordinate, positioned at hydraulic cylinder（22）Interior core pipe（26）It is axially-spaced on outer wall to offer several ball brackets（31）, each rolling
Pearl bracket（31）Outer wall on be respectively equipped with some circumferential annular slide tracks（32）, with each ball bracket（31）Each annular slide track
（32）The cylinder one of opposite position（23）Several outer small interior big ball eyelets are respectively equipped with outer wall（33）, each ball hole
Eye（33）Inside it is respectively equipped with ball（34）.
2. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the piston rod（13）Upper axial direction has logical
Hole, piston rod（13）Nozzle is provided with the aperture of upper end, nozzle location is provided with the pressure regulator valve that lower end is inserted into nozzle（18）,
Piston rod（13）The pressure regulator valve of top（18）Outer wall is provided with the mounting ring axially with several drain through holes, mounting ring it is outer
While it is fastened on top connection（11）Lower surface and cylinder（12）Between.
3. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the piston rod（13）Outward flange（16）'s
Outer wall is provided with two seals ring recess, is separately installed with each seal groove and cylinder（12）The sealing ring that inwall is engaged.
4. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the piston rod（13）Lower end be provided with
Cutter hub（15）Middle and lower part is towards cylinder（12）The upper coarse and lower fine nose cone that the side at center is engaged.
5. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the cylinder（12）Each cutter groove（17）It is upper
Side is respectively equipped with is arranged on cylinder by bolt（12）On tool rest（19）, cutter hub（15）Upper end by hinge in tool rest
（19）On, cylinder（12）Each cutter groove（17）Be respectively arranged below with to cutter hub（15）Play the limited block of position-limiting action in lower end
（20）, each limited block（20）Cylinder is arranged on by bolt respectively（12）On.
6. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the cutter hub（15）Lower semisection is towards cylinder
（12）Outer side is welded with several cutting tooths, is provided with towards the side of body centre and piston rod（13）Lower end be engaged
Evagination arcwall face.
7. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the piston head（25）And core pipe（26）On
Provided with the axial center hole being connected, piston head（25）Nozzle one, top connection one are provided with the aperture of upper end（21）With piston
Head（25）Between be provided with lower end and be inserted into choke valve in nozzle one（35）, positioned at piston head（25）The choke valve of top（35）Outside
Wall is provided with the outer bulge loop axially with several drain through holes, and top connection one is fastened on outside outer bulge loop（21）Lower surface with
Hydraulic cylinder（22）Between.
8. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that each ball bracket（31）Annular it is sliding
Road（32）Upper half has respectively is oriented to the conical surface.
9. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the piston head（25）Outer wall be provided with
Two seals ring recess, is separately installed with each seal groove and hydraulic cylinder（22）Inwall mutually seals the sealing ring of cooperation, piston head
（25）Hydraulic cylinder below lower surface（22）Side wall is radially provided with relief hole（36）.
10. casing damaged well diameter enlarging instrument as claimed in claim 1, it is characterised in that the cutting head 30 of the cutting element 29
The diameter of the big cutting element 29 square thereon of diameter, the lower surface of cutting head 30 and side are respectively equipped with cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885959.1A CN107780861A (en) | 2017-09-27 | 2017-09-27 | Casing damaged well diameter enlarging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885959.1A CN107780861A (en) | 2017-09-27 | 2017-09-27 | Casing damaged well diameter enlarging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107780861A true CN107780861A (en) | 2018-03-09 |
Family
ID=61433827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710885959.1A Pending CN107780861A (en) | 2017-09-27 | 2017-09-27 | Casing damaged well diameter enlarging instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296330A (en) * | 2018-10-16 | 2019-02-01 | 中国石油天然气集团有限公司 | Hydraulic for expansion tube repairs a mouthful tool |
| CN111058787A (en) * | 2019-11-20 | 2020-04-24 | 中国海洋石油集团有限公司 | Positioning hydraulic internal cutting knife and oil pipe cutting method |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313038Y (en) * | 1997-10-10 | 1999-04-07 | 张希俊 | Milling cutter for petroleum casing pipe |
| CN2844406Y (en) * | 2005-08-22 | 2006-12-06 | 大庆油田有限责任公司 | Fluid power expanding combined segment milling cutter |
| CN201416401Y (en) * | 2009-04-13 | 2010-03-03 | 李孝勇 | Hydraulic dual variable-diameter shaft back-drilling diameter expander |
| CN201778658U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Reaming-while-drilling device used for casing drilling |
| CN102704882A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Hydraulic forced centralizer |
| CN106437591A (en) * | 2016-11-25 | 2017-02-22 | 中国石油大学(华东) | Hydraulic ball-type casing reshaping device |
-
2017
- 2017-09-27 CN CN201710885959.1A patent/CN107780861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313038Y (en) * | 1997-10-10 | 1999-04-07 | 张希俊 | Milling cutter for petroleum casing pipe |
| CN2844406Y (en) * | 2005-08-22 | 2006-12-06 | 大庆油田有限责任公司 | Fluid power expanding combined segment milling cutter |
| CN201416401Y (en) * | 2009-04-13 | 2010-03-03 | 李孝勇 | Hydraulic dual variable-diameter shaft back-drilling diameter expander |
| CN201778658U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Reaming-while-drilling device used for casing drilling |
| CN102704882A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Hydraulic forced centralizer |
| CN106437591A (en) * | 2016-11-25 | 2017-02-22 | 中国石油大学(华东) | Hydraulic ball-type casing reshaping device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296330A (en) * | 2018-10-16 | 2019-02-01 | 中国石油天然气集团有限公司 | Hydraulic for expansion tube repairs a mouthful tool |
| CN109296330B (en) * | 2018-10-16 | 2024-05-28 | 中国石油天然气集团有限公司 | Hydraulic mouth repairing tool for expansion pipe |
| CN111058787A (en) * | 2019-11-20 | 2020-04-24 | 中国海洋石油集团有限公司 | Positioning hydraulic internal cutting knife and oil pipe cutting method |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
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Application publication date: 20180309 |