CN107724960A - A kind of controllable guiding pipe nipple of electrodrill - Google Patents
A kind of controllable guiding pipe nipple of electrodrill Download PDFInfo
- Publication number
- CN107724960A CN107724960A CN201710935651.3A CN201710935651A CN107724960A CN 107724960 A CN107724960 A CN 107724960A CN 201710935651 A CN201710935651 A CN 201710935651A CN 107724960 A CN107724960 A CN 107724960A
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- China
- Prior art keywords
- pipe nipple
- main body
- orientation rotation
- orientation
- angle
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- 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 invention discloses a kind of controllable guiding pipe nipple of electrodrill, is oriented to pipe nipple power transmission shaft and is located at whole pipe nipple axle center, for torque drive and drilling fluid transmission.Orientation rotation main body and angle rotating mass are socketed in successively to be oriented on pipe nipple power transmission shaft, and can each autorotation.The contact plane of angle rotating mass and orientation rotation main body has an inclined angle, when angle rotating mass rotates, can produce angle change.After angle adjustment, the rotation of orientation rotation main body, the adjustable orientation for having formed angle.Measurement assembly is located among angle rotating mass, can measure oneself state and various downhole parameters immediately.The present invention can need to carry out the instant adjustment for drilling orientation and angle according to drilling well；Immediate status, drill bit posture, well temperature, the pressure and other parameters of itself can be measured simultaneously, and these data can be sent to ground.
Description
Technical field
The present invention relates to petroleum drilling technology, and in particular to a kind of controllable guiding pipe nipple of electrodrill.
Background technology
Electrodrill belongs to one kind of mud motor, and its driving force is transmitted by cable.Thus, electrodrill
Drilling well can earthward transmission information, be a kind of important technology for realizing continuous steerable intelligent drilling.
Although domestic electrodrill and being in the starting stage without rig drilling technique, underground elbow connection control technology is
Just constantly researched and developed in rotary steering this intermediate item many years ago.But according to rotary steering practical application effect from the point of view of, it is domestic
The technology but encounters many setbacks using upper at the scene, and this make it that market is not high to domestic controllable bent joint technical approval degree.
Current domestic rotary steering technology is all good in the effect of ground experiment, experiment, but stability after going into the well and can
Fluctuation can be produced by property, this fluctuation may can produce significant impact to being oriented to result, strongly limit the control of well track
Effect.
The content of the invention
It is an object of the invention to provide a kind of controllable guiding pipe nipple of electrodrill, to solve problem of the prior art, sheet
Invention can need to carry out the instant adjustment for drilling orientation and angle according to drilling well；Immediate status, the drill bit of itself can be measured simultaneously
Posture, well temperature, pressure and other parameters, and these data can be sent to ground.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of controllable guiding pipe nipple of electrodrill, including pipe nipple power transmission shaft is oriented to, it is oriented to the upper end connection of pipe nipple power transmission shaft
To submersible electric machine with oil power transmission shaft, lower end is connected to bit connectors, and the upper outside for being oriented to pipe nipple power transmission shaft is arranged with orientation rotation
Top connection, the upper end of orientation rotation top connection are connected to submersible electric machine with oil lower contact, and bottom is connected with orientation rotation main body, orientation rotation
The bottom for turning main body is connected with transition connector, and the bottom of transition connector connects angled rotating mass, and orientation rotation master
The lower surface and angle rotating mass upper surface of body are the inclined-plane to cooperate, and the lower end of angle rotating mass passes through base bearing
It is connected with the upper end of bit connectors；
The first hollow electricity rotation connector, the upper end connection of the first hollow electricity rotation connector are provided with orientation rotation top connection
To orientation rotation top connection, lower end is connected to orientation rotation main body, and the top of orientation rotation main body be provided with inside and outside first it is double
To clutch, when bidirectional clutch is in holding state inside and outside first, bidirectional clutch is with being oriented to pipe nipple transmission inside and outside first
Axle is from orientation rotation top connection conjunction；
The second hollow electricity rotation connector is provided with orientation rotation main body, the upper end of the second hollow electricity rotation connector is connected to
Orientation rotation main body, lower end is connected to transition connector, and the top of transition connector is provided with bidirectional clutch inside and outside second,
When bidirectional clutch is in holding state inside and outside second, bidirectional clutch is with being oriented to pipe nipple power transmission shaft from side inside and outside second
Position rotating mass is closed.
Further, be provided with clutch shaft bearing between orientation rotation main body and orientation rotation top connection, orientation rotation main body and
Second bearing is provided between guiding pipe nipple power transmission shaft.
Further, 3rd bearing is provided between transition connector and orientation rotation main body, transition connector and guiding are short
Fourth bearing is provided between section power transmission shaft.
Further, the lower end of bit connectors is connected with drill bit assembly.
Further, angle rotating mass is provided with mounting groove, be provided with mounting groove be used to measuring orientation rotation main body and
The relative rotation angle of angle rotating mass, angle rotating mass are relative to the temperature near the inclination angle of ground level and orientation, drill bit
Degree and pressure and the measurement assembly of drill speed and moment of torsion.
Further, mounting groove is provided with cover plate.
Further, bit connectors are connected through a screw thread with being oriented to the lower end of pipe nipple power transmission shaft, and bit connectors lead to
Cross steady pin and reinforced with being oriented to pipe nipple power transmission shaft.
Compared with prior art, the present invention has technique effect beneficial below：
The present invention is applied to electrodrill geosteering, mainly includes orientation adjustment module, angular adjustment module and instant
Three parts of measurement module.It can be needed to carry out the instant regulation for drilling orientation and angle according to drilling well, and in regulation while other side
Position and angle are measured in real time, can be monitored guide effect in real time and be carried out guiding compensation adjustment.
Further, intelligent control submodule can be implanted into measurement module, is needed to carry out angle according to the drilling well of individual well
With the tone sandhi in orientation, form intelligence and bore examining system.
In addition, the present invention uses mechanical clutch locking mechanism, under vibration, what its long-time maintained itself posture can
By the far super hydraulic power formula bent sub of property and stability.Itself posture and guide effect data can be formed into data and curves to be sent to
Ground, can recover to form real-time guide effect figure, and reference is provided for the geosteering of next step.
Brief description of the drawings
Fig. 1 is that electrodrill is oriented to pipe nipple fundamental diagram；
Fig. 2 is that electrodrill is oriented to pipe nipple structural representation；
Fig. 3 is enlarged drawing at A in Fig. 2.
Wherein, 1, submersible electric machine with oil power transmission shaft；2nd, submersible electric machine with oil lower contact；3rd, it is oriented to pipe nipple power transmission shaft；4th, on orientation rotation
Joint；5th, the first hollow electricity rotation connector；6th, bidirectional clutch inside and outside first；7th, clutch shaft bearing；8th, orientation rotation main body；9th,
Two bearings；10th, transition connector；11st, angle rotating mass；12nd, measurement assembly；13rd, cover plate；14th, base bearing；15th, it is fixed
Pin；16th, bit connectors；17th, drill bit assembly；18th, the second hollow electricity rotation connector；19th, bidirectional clutch inside and outside second；20、
3rd bearing；21st, fourth bearing.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, guiding pipe nipple power transmission shaft 3 of the invention is located at whole pipe nipple axle center, for torque drive and drilling fluid
Transmit.Orientation rotation main body 8 and angle rotating mass 11 are socketed in successively to be oriented on pipe nipple power transmission shaft 3, and can each autorotation.
The contact plane of angle rotating mass 11 and orientation rotation main body 8 has an inclined angle, when angle rotating mass 11 rotates
When, angle change can be produced.After angle adjustment, orientation rotation main body 8 rotates, the adjustable orientation for having formed angle.
Measurement assembly 12 is located among angle rotating mass 11, can measure oneself state and various downhole parameters immediately.
Specifically, referring to Fig. 2 and Fig. 3, it is oriented to pipe nipple power transmission shaft 3 and is placed in whole pipe nipple shaft core position, upper end and latent oil electricity
Machine power transmission shaft 1 is connected, and lower end is connected with bit connectors 15.Orientation rotation top connection 4 connects with the screw thread of submersible electric machine with oil lower contact 2
Connect.First hollow electricity rotation connector 5 is placed among orientation rotation top connection 4, and upper end is connected with orientation rotation top connection 4, under
End is connected with orientation rotation main body 8, for rotating against the electrical connection between part.Bidirectional clutch 6 is placed in orientation inside and outside first
The upper end of rotating mass 8, its holding state be be oriented to pipe nipple power transmission shaft 3 from, close with orientation rotation top connection 4.Clutch shaft bearing 7 is put
Between orientation rotation top connection 4 and orientation rotation main body 8, for rotating against between support both of them.Second bearing 9 is placed in
Between orientation rotation main body 8 and guiding pipe nipple power transmission shaft 3, for rotating against between support both of them.Under orientation rotation main body 8
Hold as an inclined-plane matched with the upper end of angle rotating mass 11.Second hollow electricity rotation connector 18 is placed in orientation rotation main body 8
Among, and upper end is connected with orientation rotation main body 8, lower end is connected with transition connector 10, for rotating against the electricity between part
Connection.Bidirectional clutch 19 is placed in the upper end of transition connector 10 inside and outside second, and its holding state is with being oriented to pipe nipple power transmission shaft 3
From, close with orientation rotation main body 8.3rd bearing 20 is placed between transition connector 10 and orientation rotation main body 8, for supporting two
Rotating against between person.Fourth bearing 21 is placed in transition connector 10 and is oriented between pipe nipple power transmission shaft 3, for support both of them
Between rotate against.Angle rotating mass 11 is threadedly coupled with transition connector 10, and measurement assembly 12 is placed in angle rotation master
In body 11, measurement assembly 12 is sealed in angle rotating mass 11 by cover plate 13.The upper end of angle rotating mass 11 is one and side
The inclined-plane of the position lower end of rotating mass 8 matching.Base bearing 14 is placed in angle rotating mass 11, for support angle main body 11 with
Rotating against between bit connectors 16.Bit connectors 16 are threadedly coupled with being oriented to pipe nipple power transmission shaft 3, and pass through steady pin
15 reinforce, and bit connectors 16 are connected with drill bit assembly 17.
Electricity rotation connector is commonly called as slip ring in well logging field, can be achieved on the real-time multicore between two group parts rotated against
It is conductive.Electricity rotation connector is generally axis and crosses line, mostly solid.In the present invention for compatible hydrophthalmia problem, one kind is devised
Hollow electricity rotation connector, clutch generally axially clutch, two-way clutch also refer generally to axial two-way clutch.In the present invention from
Clutch can not use axial clutch, a kind of special radial clutch is devised for this because design space etc. limits.Its clutch
Mode is aperture surface clutch and outer diameter face clutch, so being referred to as inside and outside double clutches.
The implementation process of the present invention is described in further details below：
When that need not be oriented to regulation, bidirectional clutch 19 is in treating inside and outside bidirectional clutch 6 and second inside and outside first
Machine state, inside and outside first bidirectional clutch 6 be oriented to pipe nipple power transmission shaft 3 from, closed with orientation rotation top connection 4, it is double inside and outside second
To clutch 19 with being oriented to pipe nipple power transmission shaft 3 from being closed with orientation rotation main body 8.Now whole pipe nipple is except being oriented to pipe nipple transmission
Outside axle 3 and connected bit connectors 16, steady pin 15 can rotate, remaining parts is relatively fixed.Need angle
During regulation, bidirectional clutch 19 works inside and outside second, with orientation rotation main body 8 from, be oriented to pipe nipple power transmission shaft 3 close.This hour angle
Degree rotating mass 11 can be directed to pipe nipple power transmission shaft 3 and drive rotation, and because the upper end of angle rotating mass 11 for one and
The inclined-plane of the lower end of orientation rotation main body 8 matching, rotation can to form angle between the two, and its angular dimension is led with angle rotation
Body 11 is related to the angle that orientation rotation main body 8 rotates against.Angle adjustment in place after, bidirectional clutch 19 is multiple inside and outside second
Position, with being oriented to pipe nipple power transmission shaft 3 from being closed with orientation rotation main body 8.When needing the orientation to adjust, the work of bidirectional clutch 6 inside and outside first
Make, with orientation rotation main body 4 from, be oriented to pipe nipple power transmission shaft 3 close.Now angular range rotating mass 8 can be directed to pipe nipple transmission
Axle 3 drives rotation, and drives all component below to rotate together with, and reaches the purpose of orientation regulation.After regulation, the
Bidirectional clutch 19 resets inside and outside bidirectional clutch 6 and second inside and outside one, be oriented to pipe nipple power transmission shaft 3 from, and respectively with orientation
Rotating mass 4 and angle rotating mass 8 are closed.Now recover normal drilling state.During whole drilling and guiding regulation,
The measurement assembly 12 being placed in angle rotating mass 11, by the relative rotation of monitored over time orientation rotation main body and angle rotating mass
Gyration, angle rotating mass are relative to the temperature and pressure and drill speed near the inclination angle of ground level and orientation, drill bit
And moment of torsion, and data are passed through into the electricity in the first hollow electricity rotation connector 5, the second hollow electricity rotation connector 18, wire and drilling rod
Cable is delivered to ground.
Claims (7)
1. a kind of controllable guiding pipe nipple of electrodrill, it is characterised in that including being oriented to pipe nipple power transmission shaft (3), be oriented to pipe nipple transmission
The upper end of axle (3) is connected to submersible electric machine with oil power transmission shaft (1), and lower end is connected to bit connectors (16), is oriented to pipe nipple power transmission shaft (3)
Upper outside be arranged with orientation rotation top connection (4), the upper end of orientation rotation top connection (4) is connected to submersible electric machine with oil lower contact
(2), bottom is connected with orientation rotation main body (8), and the bottom of orientation rotation main body (8) is connected with transition connector (10), transition
The bottom of connector (10) connects angled rotating mass (11), and the lower surface of orientation rotation main body (8) and angle rotation master
Body (11) upper surface is the inclined-plane to cooperate, and the lower end of angle rotating mass (11) is connected by base bearing (14) with drill bit
The upper end connection of device (16)；
The first hollow electricity rotation connector (5) is provided with orientation rotation top connection (4), the first hollow electricity revolves the upper of connector (5)
End is connected to orientation rotation top connection (4), and lower end is connected to orientation rotation main body (8), and the top of orientation rotation main body (8) is set
Bidirectional clutch inside and outside first (6) is equipped with, it is two-way inside and outside first when bidirectional clutch (6) is in holding state inside and outside first
Clutch (6) is with being oriented to pipe nipple power transmission shaft (3) from orientation rotation top connection (4) conjunction；
The second hollow electricity rotation connector (18) is provided with orientation rotation main body (8), the second hollow electricity revolves the upper of connector (18)
End is connected to orientation rotation main body (8), and lower end is connected to transition connector (10), and the top of transition connector (10) is provided with
Bidirectional clutch (19) inside and outside second, when bidirectional clutch (19) is in holding state inside and outside second, inside and outside second it is two-way from
Clutch (19) is with being oriented to pipe nipple power transmission shaft (3) from orientation rotation main body (8) conjunction.
A kind of 2. controllable guiding pipe nipple of electrodrill according to claim 1, it is characterised in that orientation rotation main body (8)
Clutch shaft bearing (7) is provided between orientation rotation top connection (4), between orientation rotation main body (8) and guiding pipe nipple power transmission shaft (3)
Provided with second bearing (9).
A kind of 3. controllable guiding pipe nipple of electrodrill according to claim 2, it is characterised in that transition connector (10) and
3rd bearing (20) is provided between orientation rotation main body (8), is provided between transition connector (10) and guiding pipe nipple power transmission shaft (3)
Fourth bearing (21).
4. the controllable guiding pipe nipple of a kind of electrodrill according to claim 1, it is characterised in that bit connectors (16)
Lower end is connected with drill bit assembly (17).
A kind of 5. controllable guiding pipe nipple of electrodrill according to claim 4, it is characterised in that angle rotating mass (11)
It is provided with mounting groove, is provided with mounting groove and is used to measuring rotating against for orientation rotation main body (8) and angle rotating mass (11)
Angle, angle rotating mass (11) turn relative to the temperature and pressure near the inclination angle of ground level and orientation, drill bit and drill bit
The measurement assembly (12) of speed and moment of torsion.
6. the controllable guiding pipe nipple of a kind of electrodrill according to claim 5, it is characterised in that mounting groove is provided with cover plate
(13)。
A kind of 7. controllable guiding pipe nipple of electrodrill according to claim 1, it is characterised in that bit connectors (16) with
The lower end for being oriented to pipe nipple power transmission shaft (3) is connected through a screw thread, and bit connectors (16) pass through steady pin (15) and guiding pipe nipple
Power transmission shaft (3) is reinforced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935651.3A CN107724960B (en) | 2017-10-10 | 2017-10-10 | A kind of electrodrill is controllably oriented to pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935651.3A CN107724960B (en) | 2017-10-10 | 2017-10-10 | A kind of electrodrill is controllably oriented to pipe nipple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107724960A true CN107724960A (en) | 2018-02-23 |
| CN107724960B CN107724960B (en) | 2019-04-09 |
Family
ID=61209660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710935651.3A Active CN107724960B (en) | 2017-10-10 | 2017-10-10 | A kind of electrodrill is controllably oriented to pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107724960B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505516A (en) * | 2018-12-13 | 2019-03-22 | 中国石油天然气集团有限公司 | A kind of electrodrill slide-and-guide system |
| CN111855271A (en) * | 2020-07-28 | 2020-10-30 | 中国海洋石油集团有限公司 | Coring instrument capable of drilling rock core in specified direction in well |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066886U (en) * | 1990-07-12 | 1990-12-05 | 中原石油勘探局钻井四公司 | Guide for drilling |
| US6550818B2 (en) * | 2001-04-20 | 2003-04-22 | Cavare Ltd. | Bent sub assembly for directional drilling |
| GB2399121B (en) * | 2001-12-19 | 2005-09-14 | Schlumberger Holdings | Hybrid rotary steerable system |
| CN101473102A (en) * | 2006-03-27 | 2009-07-01 | 弗朗索瓦·米勒 | Device for steering drilling tools |
| CN102733755A (en) * | 2012-07-11 | 2012-10-17 | 上海克芙莱金属加工有限公司 | Rotary drilling guider |
| US20160245025A1 (en) * | 2015-02-24 | 2016-08-25 | The Charles Machine Works, Inc. | Dual-Member Pipe Assembly |
| RU2612403C1 (en) * | 2016-04-04 | 2017-03-09 | Общество с ограниченной ответственностью Научно-производственное предприятие "БУРИНТЕХ" (ООО НПП "БУРИНТЕХ") | Device for hydromechanical control of directional rotary drilling |
| WO2017172563A1 (en) * | 2016-03-31 | 2017-10-05 | Schlumberger Technology Corporation | Equipment string communication and steering |
-
2017
- 2017-10-10 CN CN201710935651.3A patent/CN107724960B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066886U (en) * | 1990-07-12 | 1990-12-05 | 中原石油勘探局钻井四公司 | Guide for drilling |
| US6550818B2 (en) * | 2001-04-20 | 2003-04-22 | Cavare Ltd. | Bent sub assembly for directional drilling |
| GB2399121B (en) * | 2001-12-19 | 2005-09-14 | Schlumberger Holdings | Hybrid rotary steerable system |
| CN101473102A (en) * | 2006-03-27 | 2009-07-01 | 弗朗索瓦·米勒 | Device for steering drilling tools |
| CN102733755A (en) * | 2012-07-11 | 2012-10-17 | 上海克芙莱金属加工有限公司 | Rotary drilling guider |
| US20160245025A1 (en) * | 2015-02-24 | 2016-08-25 | The Charles Machine Works, Inc. | Dual-Member Pipe Assembly |
| WO2017172563A1 (en) * | 2016-03-31 | 2017-10-05 | Schlumberger Technology Corporation | Equipment string communication and steering |
| RU2612403C1 (en) * | 2016-04-04 | 2017-03-09 | Общество с ограниченной ответственностью Научно-производственное предприятие "БУРИНТЕХ" (ООО НПП "БУРИНТЕХ") | Device for hydromechanical control of directional rotary drilling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505516A (en) * | 2018-12-13 | 2019-03-22 | 中国石油天然气集团有限公司 | A kind of electrodrill slide-and-guide system |
| CN109505516B (en) * | 2018-12-13 | 2020-06-05 | 中国石油天然气集团有限公司 | Electric drilling tool sliding guide system |
| CN111855271A (en) * | 2020-07-28 | 2020-10-30 | 中国海洋石油集团有限公司 | Coring instrument capable of drilling rock core in specified direction in well |
| CN111855271B (en) * | 2020-07-28 | 2023-09-15 | 中国海洋石油集团有限公司 | Coring instrument capable of drilling underground designated azimuth core |
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| Publication number | Publication date |
|---|---|
| CN107724960B (en) | 2019-04-09 |
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