CN101775962B - Active shock absorber for oil drilling - Google Patents
Active shock absorber for oil drilling Download PDFInfo
- Publication number
- CN101775962B CN101775962B CN 201019185001 CN201019185001A CN101775962B CN 101775962 B CN101775962 B CN 101775962B CN 201019185001 CN201019185001 CN 201019185001 CN 201019185001 A CN201019185001 A CN 201019185001A CN 101775962 B CN101775962 B CN 101775962B
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- Prior art keywords
- shock
- absorbing
- shock absorber
- pendulum
- elastic axis
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- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 230000035939 shock Effects 0.000 title claims abstract description 22
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 32
- 238000010168 coupling process Methods 0.000 claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 claims abstract description 32
- 230000000694 effects Effects 0.000 claims abstract description 17
- 230000001133 acceleration Effects 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The invention relates to an active shock absorber for oil drilling. The active shock absorber, which is fixed in a drill collar, comprises a power source, a magnetic coupling mechanism and a shock-absorbing joint; the upper end of the magnetic coupling mechanism is connected with the power source, and the lower end of the magnetic coupling mechanism is connected with the shock-absorbing joint; the shock-absorbing joint comprises a shock-absorbing shaft and an even number of semi-annular metal balance weights hinged with the shock-absorbing shaft and axially arranged on the shock-absorbing shaft at intervals; the magnetic coupling mechanism transfers the rotational motion of the power source to the shock-absorbing shaft in order to drive the balance weights to rotate; and under the effect of self inertia and centripetal force, the balance weights generate an acceleration opposite from the direction of shock. The active shock absorber can actively absorb shock, and depends on the gyroscopic effect of rotating the rotor swing block, that is, the shock absorber can generate resistance enough to resist the shock load generated by a generating source within the range of ability, the working performance is stable and reliable, and the shock-absorbing effect is good.
Description
Technical field
The invention belongs to a kind of damper in oil drilling field, particularly a kind of active shock absorber for oil drilling.
Background technology
Damper is eliminated bit bounce to the infringement of drilling well roofbolt by the energy that absorbs the bit bounce energy and convert other form to, and the drilling tool energy of rupture causes engineering accident, the serious oil well subscription rate that makes.Present down-hole damping device is generally the flexible class damping shock absorber of compensation drilling tool length, such as the spring passive energy dissipation, perhaps is the fluid pressure type passive energy dissipation.The spring damping causes spring fatigue to lose efficacy easily, and final load still is added on the drill collar.Disclosed Chinese patent CN2767638Y disclosed damper so a kind of such as on March 29th, 2006, and it is easy to cause the fatigue failure of spring.Fluid pressure type passive energy dissipation device requires higher to the piston seal performance of himself, under the confined pressure of high down-hole (deep-well), piston will overcome confined pressure work, greatly increase the piston seal load, caused hydraulic oil easily to leak, behind the hydraulic fluid leak, just lose shock-absorbing function, service behaviour is unstable, and because of the flexible impact of internal piston undamped, causes great drilling tool potential safety hazard.If change halfway the damper lost shock-absorbing function, the drilling tool of tens of tons or up to a hundred tons need to be brought up from the shaft bottom, workload has a strong impact on greatly operating efficiency and increases drilling cost.So this type of shock absorbing tool downhole safety coefficient of flexible compensation on drilling tool length is low, and very large engineering risk is arranged.
Summary of the invention
The problem that exists in order to solve background technology, the invention provides a kind of active shock absorber for oil drilling, damping of the present invention is active vibration damping, rely on the gyroscopic effect of rotor centering block rotation, be that how many shock loads generating source produces, this damping device produces great resistance opposing vibrations in limit of power, stable and reliable working performance, good damping effect, and this damper urceolus is the non-telescope movable part of fixing, it connects up and down the connection the same with common drilling rod button, so be the intrinsic safety type drilling tool, the very high and common drill collar of engineering safety coefficient is identical.
Technical scheme of the present invention is: active shock absorber for oil drilling of the present invention is fixedly installed in the drill collar, and it comprises power source, magnetic coupling and shock-absorbing joint; Described magnetic coupling upper end is connected with power source, and the lower end connects shock-absorbing joint; Described shock-absorbing joint comprises elastic axis, be hinged on the elastic axis even number elastic axis axially on the pendulum pouring weight that arranges of interval; Thereby described magnetic coupling passes to the rotation of elastic axis band movable pendulum pouring weight with rotatablely moving of power source; Thereby the acceleration that the pendulum pouring weight produces under the effect of himself inertia and centripetal force with the vibrations opposite direction carries out damping.Namely rely on the gyroscopic effect damping of rotor centering block rotation; Above-mentioned magnetic coupling comprises outer magnetic bucket, coupling axle, separation sleeve; The coupling axle places in the outer magnetic bucket, between outer magnetic bucket and the coupling axle separation sleeve is set, and outer magnetic bucket is installed with respectively a plurality of heteropole magnet pieces with coupling axle outer wall.
Described pendulum pouring weight is semi-circular metal pendulum pouring weight, and its opening direction is at the successively interval an angle of 90 degrees that makes progress in the week of elastic axis; The quantity of described semi-circular metal pendulum pouring weight is 4;
The quantity of described shock-absorbing joint is the 2-6 joint, and rotatablely moving between adjacent two shock-absorbing joint transmitted by being fixedly connected with of adjacent two elastic axis.
The quantity of described shock-absorbing joint is 2 or 3 joints; The cross section of described elastic axis (8) is square.
The invention has the beneficial effects as follows:
1, damper urceolus of the present invention is fixed outer cylinder without relative stretching motion, so be equal to common drilling rod on the engineering safety, this is particularly important to drilling engineering.
2, shock absorber structure of the present invention is simple, easy to operate, stability and good airproof performance, the use procedure performance is played stably, the gyroscopic effect that relies on the rotor centering block to rotate produces a direction when drill collar is done suddenly vibrations acceleration a1 is delivered on the elastic axis by bolt, the swinging block of High Rotation Speed produces a rightabout acceleration a2 and passes to balance a1 on the drill collar by elastic axis, to reach damping effect owing to effect of inertia;
3, change passive energy dissipation in the past into active vibration damping, the joint number of rotating speed, the pendulum quantity of pouring weight and elastic axis by the control power source can change the size of gyroscopic couple of rotor centering block to adapt to the opposing vibrations of different range, stable and reliable working performance, good damping effect;
4, adopt bolt or be threaded in the device between the parts, make things convenient for the dismounting of device.
Description of drawings
Fig. 1 is for being structural representation of the present invention.
1-power source among the figure, 2-drill collar, the outer magnetic bucket of 3-, 4-separation sleeve, the 5-axle that is coupled, the 6-magnet piece, 7-bearing upper end cover, the 8-elastic axis, 9-puts pouring weight, the 10-clutch shaft bearing, the 11-adapter sleeve, 12-the second bearing, 13-seals bottom end cover, 14-bearing holder (housing, cover).
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Referring to Fig. 1, a kind of oil field welldrilling damper, this damper is fixedly mounted in the drill collar 2, as is bolted in the drill collar 2.Described damper comprises power source 1, magnetic coupling and shock-absorbing joint.Described power source 1 as be motor, turbine etc.Described magnetic coupling is connected with power source 1, magnetic coupling comprises outer magnetic bucket 3, coupling axle 5, separation sleeve 4, coupling axle 5 places in the outer magnetic bucket 3, between outer magnetic bucket 3 and the coupling axle 5 separation sleeve 4 is set, and outer magnetic bucket 3 is installed with respectively a plurality of heteropole magnet pieces 6 with coupling axle 5 outer walls.When magnetic cylinder 3 rotates outside power source 1 drives, because the magnetic couple effect of magnet piece makes 5 rotations of coupling axle.Separation sleeve 4 lower ends are threaded with bearing upper end cover 7.
Described shock-absorbing joint comprises elastic axis 8, pendulum pouring weight 9, clutch shaft bearing 10 and the second bearing 12.The top and bottom of elastic axis 8 are respectively equipped with clutch shaft bearing 10 and the second bearing 12, and coupling axle 5 lower ends are connected with elastic axis 8 by key, and coupling axle 5 can drive elastic axis 8 rotations, and the cross section of described elastic axis 8 is preferably square.Clutch shaft bearing 10 is provided with bearing upper end cover 7, the second bearings and is provided with bearing holder (housing, cover) 14, and bearing holder (housing, cover) 14 bottoms are equipped with sealing bottom end cover 13, have been threaded connection adapter sleeve 11 between bearing upper end cover 7 and the bearing holder (housing, cover) 14.Bearing holder (housing, cover) 14 is connected with the bolt of drill collar 2 usefulness drill collar outer walls.Elastic axis 8 middle parts are hinged with the semiorbicular metal pendulum of even number pouring weight 9 by the pin axially spaced-apart, the opening direction of semiorbicular metal pendulum pouring weight 9 is at the successively interval an angle of 90 degrees that makes progress in the week of elastic axis 8,4 pendulum pouring weights 9 are set as example take the cross section of elastic axis 8 as square and on it, the opening direction of first pendulum pouring weight is towards a left side, so the opening direction of second pendulum pouring weight just backwards, the opening direction of the 3rd pendulum pouring weight is towards the opening direction of right, the 4th pendulum pouring weight just forward.Also be to carry out spread configuration according to rule like this in the time of more pendulum pouring weight.。The concrete quantity of pendulum pouring weight and arrange and to be generally four according to the operating mode specific design, the in the vertical complementary collision of neighbouring two pendulum pouring weights.
Damper of the present invention can have a plurality of shock-absorbing joint, and adjacent two shock-absorbing joint can connect by the modes such as spline on the adjacent elastic axis, can freely add and subtract shock-absorbing joint according to the size of operating loading, is generally the 2-6 joint, preferred 2 or 3 joints.Bearing holder (housing, cover) 14 is connected with drill collar 2 wall bolts, and when drill collar 2 was shockproof, the power source 1 of High Rotation Speed drove the elastic axis rotation by the coupling axle 5 of magnetic coupling, the opened with certain angle in the axial direction under the effect of centrifugal force of the pendulum pouring weight 9 on the elastic axis 8; When drill collar 2 is done suddenly vibrations, thereby these vibrations can be delivered to by bolt and again be delivered on the elastic axis 8 on the damper, thereby produce acceleration (or be called a shaking force) a1 identical with the vibrations direction at pendulum pouring weight 9, put simultaneously pouring weight 9 because the effect of inertia and centripetal force, can produce again a rightabout acceleration (or being called inertia force) a2 and pass to balance a1 on the drill collar by elastic axis, to reach damping effect.Namely rely on the gyroscopic effect damping of rotor centering block rotation.
The clutch shaft bearing 10 that install the upper end of elastic axis 8 comprises 4 ball bearings and a roller bearing, and it can reduce vibrations each bearing is caused damage, and the second bearing 12 that install the lower end of elastic axis 8 is roller bearings.Bearing (ball) cover 7 is installed on the clutch shaft bearing of the upper end of elastic axis 8, and bearing (ball) cover 7 is threaded with separation sleeve 4.
Claims (6)
1. active shock absorber for oil drilling, it is fixedly installed in the drill collar (2), it is characterized in that: comprise power source (1), magnetic coupling and shock-absorbing joint; Described magnetic coupling upper end is connected with power source (1), and the lower end connects shock-absorbing joint; Described shock-absorbing joint comprises elastic axis (8), is hinged on the even number pendulum pouring weight (9) on the elastic axis (8), and pendulum pouring weight (9) arranges at the axially upper interval of elastic axis (8); Described magnetic coupling passes to elastic axis (8) with rotatablely moving of power source (1) thereby band movable pendulum pouring weight (9) rotation; Pendulum pouring weight (9) thus the acceleration that produces under the effect of himself inertia and centripetal force with the vibrations opposite direction carries out damping; Above-mentioned magnetic coupling comprises outer magnetic bucket (3), coupling axle (5), separation sleeve (4); Coupling axle (5) places in the outer magnetic bucket (3), between outer magnetic bucket (3) and the coupling axle (5) separation sleeve (4) is set, outer magnetic bucket (3) is installed with respectively a plurality of heteropole magnet pieces (6) with coupling axle (5) outer wall.
2. active shock absorber for oil drilling according to claim 1 is characterized in that: described pendulum pouring weight (9) is semi-circular metal pendulum pouring weight, and its opening direction is at week of elastic axis (8) interval an angle of 90 degrees successively upwards.
3. active shock absorber for oil drilling according to claim 2 is characterized in that: the quantity of described semi-circular metal pendulum pouring weight (9) is 4.
4. active shock absorber for oil drilling according to claim 2 is characterized in that: the quantity of described shock-absorbing joint is the 2-6 joint, and rotatablely moving between adjacent two shock-absorbing joint transmitted by being fixedly connected with of adjacent two elastic axis.
5. active shock absorber for oil drilling according to claim 4 is characterized in that: the quantity of described shock-absorbing joint is 2 or 3 joints.
6. according to claim 1 or 4 described active shock absorber for oil drilling, its feature exists: the cross section of described elastic axis (8) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201019185001 CN101775962B (en) | 2010-02-05 | 2010-02-05 | Active shock absorber for oil drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201019185001 CN101775962B (en) | 2010-02-05 | 2010-02-05 | Active shock absorber for oil drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101775962A CN101775962A (en) | 2010-07-14 |
| CN101775962B true CN101775962B (en) | 2013-03-27 |
Family
ID=42512530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201019185001 Expired - Fee Related CN101775962B (en) | 2010-02-05 | 2010-02-05 | Active shock absorber for oil drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101775962B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140893B (en) * | 2011-04-11 | 2013-07-10 | 西南石油大学 | Magnetorheological intelligent drilling vibration damper |
| CN104675384B (en) * | 2014-10-11 | 2018-07-06 | 北京石油化工学院 | The passive magnetic combination vibration absorber of directional tool |
| JP6251227B2 (en) | 2015-11-17 | 2017-12-20 | 本田技研工業株式会社 | Parking lock device |
| CN106639910B (en) * | 2016-11-15 | 2018-11-27 | 常州大学 | A kind of drill string Multistage damping device |
| CN110761715A (en) * | 2019-12-05 | 2020-02-07 | 金冰兰 | Downhole gas phase space rotating and swinging drilling tool and implementation method |
| CN111749627B (en) * | 2020-07-06 | 2021-12-14 | 云南铜业矿产资源勘查开发有限公司 | Drilling rod vibration damper for exploration |
| CN112362320B (en) * | 2020-10-20 | 2022-03-11 | 中国石油集团渤海钻探工程有限公司 | Gyro damping effect test device |
| CN115726683A (en) * | 2021-08-31 | 2023-03-03 | 中石化石油工程技术服务有限公司 | Electric gyro vibration damper for downhole drilling tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998443A (en) * | 1975-02-18 | 1976-12-21 | Edwin A. Anderson | Multidirectional shock absorbing device |
| US4688649A (en) * | 1985-11-12 | 1987-08-25 | Buck David A | Mechanical drill string jar |
| CN2138694Y (en) * | 1991-11-11 | 1993-07-21 | 西安石油学院 | Follower active damper in mining field |
| CN1111066A (en) * | 1993-06-21 | 1995-11-01 | 杜兰玛克斯股份有限公司 | shock-absorbing components |
| US6308940B1 (en) * | 1997-03-12 | 2001-10-30 | Smith International, Inc. | Rotary and longitudinal shock absorber for drilling |
-
2010
- 2010-02-05 CN CN 201019185001 patent/CN101775962B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998443A (en) * | 1975-02-18 | 1976-12-21 | Edwin A. Anderson | Multidirectional shock absorbing device |
| US4688649A (en) * | 1985-11-12 | 1987-08-25 | Buck David A | Mechanical drill string jar |
| CN2138694Y (en) * | 1991-11-11 | 1993-07-21 | 西安石油学院 | Follower active damper in mining field |
| CN1111066A (en) * | 1993-06-21 | 1995-11-01 | 杜兰玛克斯股份有限公司 | shock-absorbing components |
| US6308940B1 (en) * | 1997-03-12 | 2001-10-30 | Smith International, Inc. | Rotary and longitudinal shock absorber for drilling |
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| Publication number | Publication date |
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| CN101775962A (en) | 2010-07-14 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100714 Assignee: Beijing Jingbao Tongchuang Technology Development Co.,Ltd. Assignor: BEIJING ZHONGCHUANGXIN UNION TECHNOLOGY DEVELOPMENT Co.,Ltd. Contract record no.: 2014990000194 Denomination of invention: Active shock absorber for oil drilling Granted publication date: 20130327 License type: Exclusive License Record date: 20140410 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: JIN FENG Free format text: FORMER OWNER: BEIJING ZHONGCHUANGXIN UNION TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150805 |
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Effective date of registration: 20150805 Address after: 300280 -15, west of Guangming Avenue, Dagang Oilfield, Tianjin Patentee after: Jin Feng Address before: 100041 A, Shijingshan science and Technology Park, Beijing Patentee before: BEIJING ZHONGCHUANGXIN UNION TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Beijing Jingbao Tongchuang Technology Development Co.,Ltd. Assignor: BEIJING ZHONGCHUANGXIN UNION TECHNOLOGY DEVELOPMENT Co.,Ltd. Contract record no.: 2014990000194 Date of cancellation: 20150722 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jin Feng Inventor after: Luo Huaidong Inventor after: He Jiancheng Inventor after: Lin Song Inventor after: Wen Lei Inventor before: Jin Feng |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |