CN108086921A - A kind of cam-type reducing drifting connector and application method - Google Patents
A kind of cam-type reducing drifting connector and application method Download PDFInfo
- Publication number
- CN108086921A CN108086921A CN201711432798.7A CN201711432798A CN108086921A CN 108086921 A CN108086921 A CN 108086921A CN 201711432798 A CN201711432798 A CN 201711432798A CN 108086921 A CN108086921 A CN 108086921A
- Authority
- CN
- China
- Prior art keywords
- cam
- rotary sleeve
- sleeve
- shell
- input set
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 210000003746 feather Anatomy 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 210000000515 tooth Anatomy 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The present invention relates to a kind of cam-type reducing drifting connector and application methods,The connector includes at least shell,On shell by axis pin through the O-ring set on side before and after shell by the rotation connection of rib one end on the shell,Rib is arranged with ball,Include cam rotary sleeve in shell,Curved surface positioning sleeve,Guide sleeve,Input set,Feather key,Locating ring,Spring,Inner surface of outer cover bottom is fixedly connected with curved surface positioning sleeve,It is inlayed in curved surface positioning sleeve and is connected with the cam rotary sleeve for being mutually combined connection and spring,It is locked by locating ring on cam rotary sleeve inner upper end grafting input set lower end input set top,Shell upper end inner wall is fixedly connected with the guide sleeve and feather key being mutually permanently connected together,Ring-like cavity is formed in guide sleeve and feather key,Input set upper side is plugged in ring-like cavity,And guide sleeve and feather key inner surface are fitting to connection with cam rotary sleeve outer surface,Drilling tool can not be changed in the device,Drilling well drifting,Shorten drilling period.
Description
Technical field
The present invention relates to oil drilling tool fields, and in particular to a kind of cam-type reducing drifting connector and application method.
Background technology
In Process of Oil Well Drilling, since the intensity on stratum has unevenness, some stratum need drilling tool drifting, so replace
Drilling tool adds the construction time and extends drilling period.Drilling tool can not be changed in the present invention, and a drilling well drifting shortens drilling well week
Phase.
The content of the invention
In order to solve in Process of Oil Well Drilling to extend drilling period, it is necessary to constantly replace drilling tool and add the construction time
The problem of, the present invention designs a kind of cam-type reducing drifting connector and drilling tool can not be changed in application method, one kind, and a drilling well is led to
Well shortens drilling period.
The technical scheme is that：A kind of cam-type reducing drifting connector, including at least shell, it is characterised in that：On
It states centre position at left and right sides of outer surface of outer cover and sets fluted, lower end is provided with card slot in groove, and groove upper end passes through axis pin
Rib one end is rotatablely connected on the shell by the O-ring set before and after through shell on side, and the rib other end is fixed in card slot,
There is arc-shaped opening in rib medial surface lower end, and groove lower end is provided with through hole, ball is provided in through hole, ball is close to rib one side and circle
Arc opening is fitted together to, ball another side contact cam rotary sleeve lateral surface, is included cam rotary sleeve, curved surface positioning sleeve in shell, is led
To set, input set, feather key, locating ring, spring, wherein inner surface of outer cover bottom is fixedly connected with curved surface positioning sleeve, and curved surface is fixed
It is inlayed in the set of position and is connected with the cam rotary sleeve for being mutually combined connection and spring, under cam rotary sleeve inner upper end grafting input set
End, input set top are locked by locating ring, shell upper end inner wall be fixedly connected with the guide sleeve that is mutually permanently connected together and
Ring-like cavity is formed in feather key, guide sleeve and feather key, input set upper side is plugged in ring-like cavity, and guide sleeve and is led
It is fitting to connection to key inner surface and cam rotary sleeve outer surface.
The rib medial surface forms gap with groove floor, and ball movement is inlayed in through-holes, and bulb diameter is more than logical
Bore dia.
The cam rotation set upper side is petal keyway, and stage casing is five valve cam structures, and stage casing bottom surface is ripple type
End face, lower end are ratchet-type positioning tooths, and the input set epimere is stock, and stock upper end is major part, and stage casing outer surface is provided with
Along the circular arc guide groove of input set axisymmetrical, lower end is four pins of circumferentially extending.
Four pins of the input set are mutually chimeric with the petal keyway of cam rotary sleeve, and cam rotary sleeve ratchet-type is determined
Position tooth is flexibly connected with internal diameter of outer cover.
The input set is good for engageable connection by the guide groove for being arranged on its outer surface with being oriented to.
The ripple type end side of the cam rotary sleeve can engage connection with curved surface positioning sleeve.
By being threadedly secured in internal diameter of outer cover, locating ring end face is closely connected the locating ring with guide sleeve.
The shell, which is located therein one side rib lower position plugged and fixed, guide finger, and the contact of guide finger inner face is located at
Cam rotary sleeve side above spring.
The shell, which is located therein one side rib lower position plugged and fixed, guide finger, and the contact of guide finger inner face is located at
Cam rotary sleeve side above spring.
A kind of application method of cam-type reducing drifting connector, it is characterised in that needed when oil drilling is drilled into heterogeneity stratum
When wanting drifting, input input set in drilling tool, small displacement mud promotes input set to move down；Lead to when input set comes downwards to cam-type reducing
When in well connector, input set diversion trench touching feather key auto-strengthening, into guide sleeve；Four positioning pins of input set enter convex
It takes turns in rotary sleeve；Drilling fluid displacement gradually rises, and pressure promotes input set to move down, under input set promotes cam rotary sleeve common
It moves, ripple type end side generates torsion rotation, the cam of rotation with the intermeshing of curved surface positioning sleeve in cam rotary sleeve folding process
Ball is opened to dynamic promotion rib is moved outwards in the card slot of five valve cam structures of rotary sleeve；Cam rotary sleeve is persistently rotated and thrown
Enter set persistently to move down, four positioning pins progressively disengage the petal keyway of cam rotary sleeve；At this moment termination of pumping, mud pressure disappear,
It is locked that the recoil of spring of compression fixes cam rotary sleeve, and rib opening also locks.
The beneficial effects of the invention are as follows：
(1) this cam-type reducing drifting joint structure provided by the invention is stablized, and easy to operate, cost is relatively low, can not
Replace drilling tool, a drilling well drifting.
(2) this cam-type reducing drifting connector provided by the invention is shut off by four holes of the input set, works as brill
Input set is promoted to move down when well liquid discharge capacity is big.
(3) this cam-type reducing drifting connector provided by the invention is rotated by four pins of the input set with cam
Simultaneously, when input covers compression axial movement, cam rotary sleeve can rotary motion for the petal keyway intermeshing of set.
(4) when this cam-type reducing drifting connector provided by the invention is rotated by cam rotary sleeve, cam rotary sleeve
Waviness end face and curved surface positioning sleeve be intermeshed and interval positions.
(5) when this cam-type reducing drifting connector provided by the invention is rotated by cam rotary sleeve, five valve cam knots
The interaction of structure and ball, ball generation move radially.
(6) this cam-type reducing drifting connector provided by the invention is moved radially by ball generation, promotes rib, pin
Axis positioning generates the switch motion of rib.
(7) this cam-type reducing drifting connector provided by the invention is by the switch motion of rib, to cam-type reducing
Drifting connector realizes outer diameter variation.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the front view of the present invention.
Reference sign：1st, shell；2nd, cam rotary sleeve；3rd, curved surface positioning sleeve；4th, guide sleeve；5th, input set；6th, lead
Xiang Jian；7th, locating ring；8th, ball；9th, spring；10th, guide finger；11st, rib；12nd, axis pin；13rd, O-ring.Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clearly and completely
Description, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, belongs to the scope of protection of the invention.
Embodiment 1：
As depicted in figs. 1 and 2, a kind of cam-type reducing drifting connector, including at least shell 1, it is characterised in that：Above-mentioned shell 1
Centre position is set fluted at left and right sides of outer surface, and lower end is provided with card slot in groove, and groove upper end is passed through by axis pin 12
11 one end of rib is rotatably connected on shell 1 by the O-ring 13 set before and after shell 1 on side, and 11 other end of rib is fixed on card
In slot, there is arc-shaped opening in 11 medial surface lower end of rib, and groove lower end is provided with through hole, ball 8 is provided in through hole, ball 8 is close to the wing
11 one side of rib is chimeric with arc-shaped opening, 8 another side of ball contact cam rotary sleeve, 2 lateral surface, includes cam rotary sleeve in shell 1
2nd, curved surface positioning sleeve 3, guide sleeve 4, input set 5, feather key 6, locating ring 7, spring 9, wherein 1 inner surface bottom of shell is fixed
Curved surface positioning sleeve 3 is connected, is inlayed in curved surface positioning sleeve 3 and is connected with the cam rotary sleeve 2 for being mutually combined connection and spring 9, cam
2 inner upper end grafting of rotary sleeve input set, 5 lower ends, 5 tops of input set are locked by locating ring 7, and 1 upper end inner wall of shell is fixedly connected
There are guide sleeve 4 and the feather key 6 being mutually permanently connected together, ring-like cavity, input set 5 are formed in guide sleeve 4 and feather key 6
Upper end is plugged in ring-like cavity, and guide sleeve 4 and 6 inner surface of feather key are fitting to connection with 2 outer surface of cam rotary sleeve.
Application method：When oil drilling, which is drilled into heterogeneity stratum, needs drifting, input input set 5, small displacement in drilling tool
Mud promotes input set 5 to move down.When input set 5 is come downwards in cam-type reducing drifting connector, input set 5 diversion trenches touching is led
To 6 auto-strengthening of key, into guide sleeve 4.Four positioning pins of input set 5 enter in cam rotary sleeve 2.Drilling fluid displacement is gradual
Rise, pressure promote input set 5 to move down, and 5 promotion cam rotary sleeve 2 of input set moves down jointly, in 2 folding process of cam rotary sleeve
Ripple type end side generates torsion rotation with the intermeshing of curved surface positioning sleeve 3, five valve cam structures of the cam rotary sleeve 2 of rotation
Ball 8 is opened to dynamic promotion rib 11 is moved outwards in card slot.Cam rotary sleeve 2 persistently rotates and input set 5 persistently moves down, four
Positioning pin progressively disengages the petal keyway of cam rotary sleeve 2.At this moment termination of pumping, mud pressure disappear, and the rebound of spring 9 of compression makes
Cam rotary sleeve 2, which is fixed, to be locked, and rib 11, which opens, also to be locked.Play the purpose that cam-type reducing drifting connector outer diameter becomes larger.
This cam-type reducing drifting joint structure that so design provides is stablized, and easy to operate, cost is relatively low, Neng Gouke
Drilling tool, a drilling well drifting are changed without, waviness end face and the curved surface positioning sleeve 3 of cam rotary sleeve 2 are intermeshed and intermittently determine
Position, makes accurate positioning and quickly positions.
Embodiment 2；
As described in Figure 1,11 medial surface of rib forms gap with groove floor, and the movement of ball 8 is inlayed in through-holes, and ball 8
Diameter is more than through-hole diameter.
So design allows ball 8 to move radially in through-holes so that the prominent retraction of ball 8 realizes of rib 11
It closes.
Embodiment 3；
As shown in Figure 1,2 upper end of cam rotary sleeve is petal keyway, stage casing is five valve cam structures, and stage casing bottom surface is
Ripple type end side, lower end are ratchet-type positioning tooths, it is described input set 5 epimeres be stock, stock upper end be major part, stage casing outer surface
The circular arc guide groove along input 5 axisymmetricals of set is provided with, lower end is four pins of circumferentially extending.
Four pin, cam rotary sleeve 2 pawls mutually chimeric with the petal keyway of cam rotary sleeve 2 of the input set 5
Type positioning tooth is flexibly connected with 1 internal diameter of shell.
2 upper end of cam rotary sleeve is arranged to petal keyway, and stage casing is arranged to five valve cam structures, and stage casing bottom surface is set
For ripple type end side, lower end is arranged to ratchet-type positioning tooth, can so that connection is more firm, be driven more fast, stock upper end
It is salvaged for major part convenient for fishing device, 2 stage casing outer surface of cam rotary sleeve is provided with along the circular arc of input 5 axisymmetricals of set and is oriented to
Slot, so setting can be more accurate when cam rotary sleeve 2 moves downward, and deviation will not occur.
Embodiment 4；
As shown in Figure 1, the input set 5 is by being arranged on the guide groove of its outer surface with being oriented to strong 6 engageable connections.
The ripple type end side of the cam rotary sleeve 2 can engage connection with curved surface positioning sleeve 3.
By being threadedly secured in 1 internal diameter of shell, 7 end face of locating ring is closely connected the locating ring 7 with guide sleeve 4.
The shell 1, which is located therein 11 lower position plugged and fixed of one side rib, guide finger 10,10 inner face of guide finger
Contact is located at 2 side of cam rotary sleeve of 9 top of spring.
It so setting so that input set 5 can only be moved along being oriented in strong 6, cam rotary sleeve 2 is positioned by curved surface positioning sleeve 3,
7 positioning and guiding of locating ring set 4 is set, 10 positioning cam rotary sleeve of guide finger, 2 lower end is set, it can be effectively anti-when device moves
It is only worn caused by oblique movement, and aggrandizement apparatus uses accuracy.
It is to be appreciated that the directional instruction of institute in the embodiment of the present invention（Such as up, down, left, right, before and after ...）Only use
In explanation in a certain particular pose（As shown in drawings）Under relative position relation, motion conditions between each component etc., if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention be only used for description purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Define as a result, " first ", "
At least one this feature can be expressed or be implicitly included to second " feature.
Technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, the knot of this technical solution is will be understood that when the combination appearance of technical solution is conflicting or can not realize
Conjunction is not present, also not the present invention claims protection domain within.
Claims (9)
1. a kind of cam-type reducing drifting connector, including at least shell（1）, it is characterised in that：Above-mentioned shell（1）Outer surface or so
The setting of both sides centre position is fluted, and lower end is provided with card slot in groove, and groove upper end passes through axis pin（12）Through shell（1）Before
The O-ring set on rear side（13）By rib（11）One end is rotatably connected on shell（1）On, rib（11）The other end is fixed on card
In slot, rib（11）There is arc-shaped opening in medial surface lower end, and groove lower end is provided with through hole, ball is provided in through hole（8）, ball（8）
Close to rib（11）On one side with chimeric, the ball of arc-shaped opening（8）Another side contacts cam rotary sleeve（2）Lateral surface, shell（1）It is interior
Including cam rotary sleeve（2）, curved surface positioning sleeve（3）, guide sleeve（4）, input set（5）, feather key（6）, locating ring（7）, spring
（9）, wherein shell（1）Inner surface bottom is fixedly connected with curved surface positioning sleeve（3）, curved surface positioning sleeve（3）It inside inlays and is connected with phase
The mutually cam rotary sleeve of combination connection（2）With spring（9）, cam rotary sleeve（2）Inner upper end grafting input set（5）Lower end is thrown
Enter set（5）Top is by locating ring（7）Locking, shell（1）Upper end inner wall is fixedly connected with the guiding being mutually permanently connected together
Set（4）And feather key（6）, guide sleeve（4）And feather key（6）It is interior to form ring-like cavity, input set（5）Upper end is plugged on ring-like sky
Intracavitary, and guide sleeve（4）And feather key（6）Inner surface and cam rotary sleeve（2）Outer surface is fitting to connection.
2. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The rib（11）Medial surface
Gap, ball are formed with groove floor（8）Movement is inlayed in through-holes, and ball（8）Diameter is more than through-hole diameter.
3. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The cam rotary sleeve（2）
Upper end is petal keyway, and stage casing is five valve cam structures, and stage casing bottom surface is ripple type end side, and lower end is ratchet-type positioning
Tooth, the input set（5）Epimere is stock, and stock upper end is major part, and stage casing outer surface is provided with along input set（5）Axisymmetrical
Circular arc guide groove, lower end is four of circumferentially extending pins.
4. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The input set（5）Four
A pin and cam rotary sleeve（2）Petal keyway it is mutually chimeric, cam rotary sleeve（2）Ratchet-type positioning tooth and shell（1）It is interior
Footpath is flexibly connected.
5. according to a kind of cam-type reducing drifting connector described in claim 1, it is characterised in that：The input set（5）By setting
Guide groove in its outer surface is strong with being oriented to（6）Engageable connection.
6. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The cam rotary sleeve（2）
Ripple type end side can be with curved surface positioning sleeve（3）Engagement connection.
7. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The locating ring（7）By spiral shell
Line is fixed on shell（1）In internal diameter, locating ring（7）End face and guide sleeve（4）Close connection.
8. a kind of cam-type reducing drifting connector according to claim 1, it is characterised in that：The shell（1）Positioned at it
Middle one side rib（11）Lower position plugged and fixed has guide finger（10）, guide finger（10）Inner face contact is located at spring（9）On
The cam rotary sleeve of side（2）Side.
9. a kind of application method of cam-type reducing drifting connector according to any one of claims 1 to 8, feature exist
In when oil drilling is drilled into heterogeneity stratum and needs drifting, input input set in drilling tool, small displacement mud is promoted under input set
It moves；When input set is come downwards in cam-type reducing drifting connector, input set diversion trench touching feather key auto-strengthening, into leading
To set；Four positioning pins of input set enter in cam rotary sleeve；Drilling fluid displacement gradually rises, and pressure is promoted under input set
It moves, input set promotes cam rotary sleeve to move down jointly, ripple type end side and curved surface positioning sleeve phase in cam rotary sleeve folding process
Mutually engagement generates torsion rotation, and ball promotes the wing to radial outward movement is dynamic in the card slot of five valve cam structures of the cam rotary sleeve of rotation
Rib opens；Cam rotary sleeve, which persistently rotates and puts into set, persistently to be moved down, and four positioning pins progressively disengage the petal of cam rotary sleeve
Shape keyway；At this moment termination of pumping, mud pressure disappear, and the recoil of spring of compression makes the fixation of cam rotary sleeve locked, and rib opening is also locked
Extremely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432798.7A CN108086921B (en) | 2017-12-26 | 2017-12-26 | Cam-type reducing pigtail joint and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432798.7A CN108086921B (en) | 2017-12-26 | 2017-12-26 | Cam-type reducing pigtail joint and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108086921A true CN108086921A (en) | 2018-05-29 |
| CN108086921B CN108086921B (en) | 2023-05-30 |
Family
ID=62178014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711432798.7A Active CN108086921B (en) | 2017-12-26 | 2017-12-26 | Cam-type reducing pigtail joint and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108086921B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948063A (en) * | 2024-03-27 | 2024-04-30 | 东营千禧龙科工贸有限公司 | Petroleum tool grabbing and placing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368114A (en) * | 1992-04-30 | 1994-11-29 | Tandberg; Geir | Under-reaming tool for boreholes |
| CN201606015U (en) * | 2010-01-04 | 2010-10-13 | 大庆石油管理局 | Cam transposition tapered stabilizer |
| CN203655179U (en) * | 2013-12-31 | 2014-06-18 | 贵州高峰石油机械股份有限公司 | Hydraulic diameter-variable stabilizer with more than three variable diameters |
| CN203783487U (en) * | 2013-12-12 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reducing drilling tool stabilizer and long-channel hydraulic control type reducing drilling tool stabilizer assembly |
| CN204920933U (en) * | 2015-09-02 | 2015-12-30 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reducing stabilizer controlling means for well drilling |
| CN207905726U (en) * | 2017-12-26 | 2018-09-25 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of cam-type reducing drifting connector |
-
2017
- 2017-12-26 CN CN201711432798.7A patent/CN108086921B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368114A (en) * | 1992-04-30 | 1994-11-29 | Tandberg; Geir | Under-reaming tool for boreholes |
| CN201606015U (en) * | 2010-01-04 | 2010-10-13 | 大庆石油管理局 | Cam transposition tapered stabilizer |
| CN203783487U (en) * | 2013-12-12 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reducing drilling tool stabilizer and long-channel hydraulic control type reducing drilling tool stabilizer assembly |
| CN203655179U (en) * | 2013-12-31 | 2014-06-18 | 贵州高峰石油机械股份有限公司 | Hydraulic diameter-variable stabilizer with more than three variable diameters |
| CN204920933U (en) * | 2015-09-02 | 2015-12-30 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reducing stabilizer controlling means for well drilling |
| CN207905726U (en) * | 2017-12-26 | 2018-09-25 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of cam-type reducing drifting connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948063A (en) * | 2024-03-27 | 2024-04-30 | 东营千禧龙科工贸有限公司 | Petroleum tool grabbing and placing device |
| CN117948063B (en) * | 2024-03-27 | 2024-05-28 | 东营千禧龙科工贸有限公司 | Petroleum tool grabbing and placing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108086921B (en) | 2023-05-30 |
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