CN201943607U - Remote-control diameter-variable centralizer for well drilling - Google Patents
Remote-control diameter-variable centralizer for well drilling Download PDFInfo
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- CN201943607U CN201943607U CN2010206163870U CN201020616387U CN201943607U CN 201943607 U CN201943607 U CN 201943607U CN 2010206163870 U CN2010206163870 U CN 2010206163870U CN 201020616387 U CN201020616387 U CN 201020616387U CN 201943607 U CN201943607 U CN 201943607U
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Abstract
The utility model relates to a remote-control diameter-variable centralizer for well drilling and belongs to the field of borehole trajectory control and deviation control tools. The remote-control diameter-variable centralizer comprises a housing, a pressure mechanism, a diameter varying mechanism, a control mechanism, a signal mechanism, wherein the housing has an integrated structure, and three straight edge wing faces are arranged on the outer surface of the housing; the pressure mechanism comprises upper and lower spindles, a return spring, a spring seat and a balancing piston; the diameter varying mechanism comprises an inclined body, three supporting blocks and a seal; the control mechanism comprises a cam body, a cam guide pin and upper and lower bearings; the signal mechanism comprises a mushroom head and an upper spindle bell mouth; the upper and the lower spindles are arranged inside the inner cavity of the housing; the return spring, the spring seat, the inclined body, the cam body, the bearing seat, the balancing piston and a lower adapter are arranged in sequence from top to bottom on the outer surface of the housing; and the three supporting blocks are arranged inside there elongated holes which are formed on the wing faces of the housing. The remote-control diameter-variable centralizer has the main advantages of simple and compact structure, good control effect, reliability in operation, good sealing performance and resistance to wear. The change in diameter of the underground centralizer is remotely controlled by starting or stopping the pump on the ground, and the status of diameter change of the centralizer is monitored by the signal mechanism in combination with a pressure meter. The remote-control diameter-variable centralizer is applied to the directional wells, the horizontal wells and the vertical wells.
Description
(1) technical field
The utility model relates to the TRAJECTORY CONTROL and the anti-deviation device of oil, geology brill directional well, horizontal well and straight well, particularly is a kind of drilling well remote control reducing centralizer.
(2) background technology
For the track of controlling well with prevent hole deviation, generally use centralizer (claiming stabilizer again) in the drilling process.Traditional centralizer causes lock of tool drilling, slacking off, trip-out to meet card and " pulling out piston " phenomenon often.Drillng operation is caused the deuce to pay, the waste plenty of time, even well slough, gas blowout accident can take place, and well is scrapped, cause the tremendous economic loss.For this reason and the development and use simple and easy reducing centralizer, mainly contain two kinds of fluid pressure type and the pressure of the drill formulas.It is big that fluid pressure type turn on pump diameter becomes, and the termination of pumping diameter diminishes.Diameter became big when the pressure of the drill formula added the pressure of the drill, and diameter diminishes when carrying brill.All can only be used for drilling straight-hole, the problem of just having avoided the drawback of traditional centralizer to bring has increased the safety of drilling well.Along with high moment of torsion, high frictional resistance problem that extended reach well occurs, the control well oblique angle has just become the key technology of extended reach well TRAJECTORY CONTROL.Remote control reducing centralizer can also be controlled accurately to hole angle except having simple and easy reducing centralizer advantage.At horizontal segment, can accurately control vertical depth.Patent documentation by retrieval, representative comparable patent is: " a kind of displacement remote control reducing centralizer " (96212594.6), " positive discharge capacity remote control reducing centralizer " (00234301.0) and " a kind of remote control reducing centralizer " (03201373).Preceding two exist the structural principle defective, poor reliability, though back one similar to the utility model operating principle, structure is imperfection still.
(3) summary of the invention
In view of the shortcoming and defect part that above-mentioned prior art exists, the purpose of this utility model just is that development provides a kind of structure and the distinguished drilling well remote control of effect reducing centralizer.The major technique innovation is built-in back-up block telescoping mechanism and cam body chute controlling organization thereof.Solve the problem that prior art exists with this, improve China's drilling technology level and economic benefit.
Above-mentioned purpose is realized by following technical proposals:
Drilling well remote control reducing centralizer comprises housing, presses mechanism, diameter changing mechanism, controlling organization and several parts of signaling gear.It is characterized in that housing is a monolithic, its external surface has three straightedge aerofoils.Pressing mechanism is made up of upper spindle, lower spindle, return spring, spring base and dummy piston.Diameter changing mechanism is made up of clinohedral, back-up block and middle sealing.Controlling organization is made up of cam body, cam guide finger and metal (upper.Signaling gear is made up of the horn mouth on mushroom head and upper spindle top.The mushroom head is installed on the housing upper top internal chamber wall.Upper spindle and lower spindle adopt engage thread to link into an integrated entity, and are installed in below the housing lumen centers mushroom head.Install from top to bottom successively the outside of upper spindle: go up sealing, return spring, spring base, clinohedral.Install from top to bottom successively the outside of lower spindle: upper bearing (metal), cam body, lower bearing, bearing pressure cap, dummy piston, lower seal, water proof sealing, lower contact.Three back-up blocks are installed in the slotted hole on 120 ° of uniform three straightedge aerofoils of housing circumference, and the inner end of back-up block is installed in 120 ° of uniform T type chutes or dovetail chute of clinohedral appearance circumference.The cam guide finger radially is installed in the radial hole of housing Lower Half, and insert in the cam body external surface control chute inner end of cam guide finger.Upper and lower bearing is installed in the upper and lower end of cam body, and the bearing pressure cap is installed in below the lower bearing.Lower contact and housing lower end are with being threaded.In above-mentioned each parts, cam body can be driven by lower spindle and move up and down, and can rotate again.Be installed in other parts on the upper and lower axle, all can only be moved up and down, and can not rotate by upper and lower axle drive.On the inner chamber that is sealed to down between close be full of lubrication oil.
Housing in the above-mentioned drilling well remote control reducing centralizer is cylindrical shape, and straight-through up and down inner chamber is arranged.Its stage casing appearance has 120 ° of uniform straightedge aerofoils of three circumference and three alternate chip areas.The upper and lower end of straightedge aerofoil respectively has tapered slope.Have on every straightedge aerofoil the long shape hole that back-up block is used is installed.The box thread that the housing upper/lower terminal has the connection drilling tool to use.
Clinohedral in the above-mentioned drilling well remote control reducing centralizer is cylindrical shape, and axial center hole is arranged.Its appearance has 120 ° of three uniform tapered planes of circumference, and respectively there is axial T type chute or the dovetail chute that cooperates usefulness together with back-up block at the center of tapered plane.
Back-up block in the above-mentioned drilling well remote control reducing centralizer is rectangular three-dimensional shape.Two ends are the semicircle cambered surface about it.Its appearance is the cylindrical radial face, is inlaying the strip wear-resistant block on its external surface.Its inside is the inclined-plane that cooperates with clinohedral, and T connector or dovetail head are arranged on this inclined-plane.There is seal groove the side around the back-up block, and middle sealing is housed.
Cam body in the above-mentioned drilling well remote control reducing centralizer is cylindrical shape, and axial center hole is arranged.Its upper and lower end have install, cannelure that lower bearing is used.Its middle part external surface has the control chute of bending.
Mushroom head in the above-mentioned drilling well remote control reducing centralizer is cylindrical shape.There is a cone at center above it, below the center cylinder circular cone plush copper is arranged, uniform several axial flowing holes beyond the plush copper.
The utility model and prior art contrast, major advantage is: shell is a monolithic construction, simplifies compact intensity height, mounting or dismounting are convenient, good airproof performance, reliable operation.Manufacturing cost is lower, and application life is longer.Especially three big palm long support pieces, its appearance cylinder cambered surface and borehole wall contact area are bigger, set upright effective, difficult drop-off, reliable operation, wear-resistant, be innovation emphasis of the present utility model.Adopt cam control gear, and do not adopt complicated electronic telecontrol device, only need, just can change diameter by remote control down-hole centralizer in terrestrial operation turn on pump or termination of pumping.Adopt a signaling gear of pestering, and do not adopt complicated wireless signal transmission system, only need cooperate, just the flexible duty of centralizer under the energy monitor well with the ground pressure instrument.Constituted thus simple and practical, safe and reliable, cost is lower, the centralizer reducing ground remote control of remarkable benefit, monitoring system.Saved the wellbore construction cost greatly.Have higher technical innovation level and remarkable economic efficiency.
(4) description of drawings
Accompanying drawing 1 is an overall structure cross-sectional schematic of the present utility model.
Accompanying drawing 2 is A-A sectional schematic diagrams of Fig. 1.
Accompanying drawing 3 is schematic perspective views of back-up block 8.
Accompanying drawing 4 is that the cylindrical shape of cam body 12 launches schematic diagram.
(5) specific embodiment
Example of accompanying drawings:
In the accompanying drawing, the 1st, housing, the 2nd, mushroom head, the 3rd, last sealing, the 4th, upper spindle, the 5th, return spring, the 6th, spring base, the 7th, clinohedral, the 8th, back-up block (three), the 9th, middle sealing, the 10th, lower spindle, the 11st, upper bearing (metal), the 21st, lower bearing, the 12nd, cam body, the 13rd, cam guide finger, the 14th, bearing pressure cap, the 15th, dummy piston, the 16th, lower seal (inside and outside two places), the 17th, water proof sealing, the 18th, lower contact, the 19th, wear-resisting stick, the 20th, the inner end T type slippery fellow of back-up block 8.G is the control chute on the cam body 12, and D is a lubricant reservoir, and E is the seal groove on the back-up block 8, and F is the axial flowing hole on the mushroom 2.
By shown in Figure 1, drilling well remote control reducing centralizer comprises housing 1, presses mechanism, diameter changing mechanism, controlling organization and signaling gear five parts.It is characterized in that housing 1 is a monolithic, its external surface has three straightedge aerofoils.Pressing mechanism is made up of upper spindle 4, lower spindle 10, return spring 5, spring base 6 and dummy piston 15.Diameter changing mechanism is made up of clinohedral 7, back-up block 8 (three) and middle sealing 9.Controlling organization is made up of cam body 12, cam guide finger 13 and upper and lower bearing 11,21.Signaling gear is made up of mushroom 2 and upper spindle 4 top horn mouths.Mushroom 2 is installed on the housing 1 upper top internal chamber wall.Upper spindle 4 and lower spindle 10 adopts engage thread to link into an integrated entity, and is installed in housing 1 lumen centers mushroom below 2.Install from top to bottom successively the outside of upper spindle 4: on seal 3, return spring 5, spring base 6 and clinohedral 7.Install from top to bottom successively the outside of lower spindle 10: upper bearing (metal) 11, cam body 12, lower bearing 21, bearing pressure cap 14, dummy piston 15, lower seal 16, water proof sealing 17 and lower contact 18.Three back-up blocks 8 are installed in 120 ° of housing 1 appearance circumference all
In the slotted hole on three straightedge aerofoils of cloth, the inner end of back-up block 8 is installed in 120 ° of uniform T type chutes or dovetail chute of clinohedral 7 appearance circumference.Cam guide finger 13 is installed in the radial hole of housing 1 Lower Half, and insert among the control chute G of cam body 12 external surfaces the inner end of cam guide finger 13.Upper and lower bearing 11,21 is installed in the upper and lower end of cam body 12.Bearing pressure cap 14 be installed in lower bearing 21 below.Lower contact 18 and housing 1 lower end are with being threaded.In above-mentioned each parts, cam body 12 can be driven by lower spindle 10 and move up and down, and can rotate again.Be installed in other parts on the upper and lower axle 4,10, all can only be moved up and down, and can not rotate by upper and lower axle 4,10 drives.Last sealing 3 to the inner chamber between the lower seal 16 is full of lubrication oil.
By shown in Figure 1, housing 1 is a cylindrical shape.Its stage casing appearance has 120 ° of uniform straightedge aerofoils of three circumference and three alternate chip areas.Straightedge aerofoil upper/lower terminal respectively has tapered slope.On every straightedge aerofoil the elongated hole that back-up block 8 usefulness are installed is arranged.Housing 1 Lower Half has the radial hole that cam guide finger 13 usefulness are installed.Housing 1 upper/lower terminal has the box thread that connects drilling tool.
Shown in Fig. 1,2, clinohedral 7 is a cylindrical shape, and axial center hole is arranged.Its appearance has 120 ° of three uniform tapered planes of circumference, and respectively there is axial T type chute or the dovetail chute that cooperates usefulness together with back-up block 8 at the center of tapered plane.
Shown in Fig. 3,2,1, back-up block 8 is a rectangular three-dimensional shape.Its upper/lower terminal is the semicircle cambered surface.Its appearance is the cylindrical radial face, is inlaying wear-resisting stick 19 on its external surface.Its inside is the inclined-plane that cooperates with clinohedral 7, and T type foxy 20 or dovetail slippery fellow are arranged on this inclined-plane.There is seal groove E the side around the back-up block 8, sealing 9 in being equipped with.
By shown in Figure 1, cam body 12 is a cylindrical shape, and axial center hole is arranged.Its upper and lower end have install, the cannelure of lower bearing 11,21 usefulness, its middle part external surface has the control chute G of bending.
By shown in Figure 1, mushroom 2 is a cylindrical shape.There is a cone at center above it, below the center cylinder circular cone plush copper is arranged, uniform several axial flowing hole F beyond the plush copper.
The dynamic duty procedure declaration of drilling well remote control reducing centralizer:
Figure 1 shows that the drilling mud pump state that quits work.The upper and lower pressure balance of upper and lower axle at this moment, under the effect of return spring 5, upper and lower axle 4,10 is moved upward to extreme higher position shown in Figure 1.Clinohedral 7, cam body 12 are also together driven upper limit position.So simultaneously, cam guide finger 13 is positioned at the C1 place, the minimum position of control chute G of Fig. 4 convexity wheel body 12, makes back-up block 8 inwardly be retracted to extreme position, and its outer face is lower than the straightedge aerofoil of housing 1.
At the slush pump turn on pump state first time, the last inner chamber mud pressure of Fig. 1 middle shell 1 rises, make upper spindle 4 overcome the elastic force of spring 5, upper and lower axle 4,10 moves down and drives clinohedral 7, cam body 12, dummy piston 15 and together move down (cam guide finger 13 is motionless), and cam body 12 moves down and rotates, cam guide finger 13 is stopped by the B1 that the C1 among Fig. 3 slides into G groove middle and upper part, and cam body 12 and clinohedral 7 also no longer move down.This moment, back-up block 8 outwards was stretched over concordant with the straightedge aerofoil of housing 1 by limit punctured position.
Termination of pumping once more, the last inner chamber mud pressure of housing 1 descends, and under the effect of return spring 5, upper and lower axle 4,10 and above-mentioned 7,12,15 each parts move up once more, cam body 12 moves up and rotates, and cam guide finger 13 is slided into the C2 place, minimum position of G groove by the B1 among Fig. 3.Back-up block 8 is withdrawn into the straightedge aerofoil that is lower than housing 1 once more.
Turn on pump for the second time, the last inner chamber mud pressure of housing 1 rises once more, makes upper spindle 4 overcome the elastic force of spring 5 once more, and upper and lower axle 4,10 and above-mentioned each parts 7,12,15 together move down once more.So simultaneously, cam body 12 moves down once more and rotates, and cam guide finger 13 is located to A2 (A1) by the B2 place, high-order bit that the C2 among Fig. 3 slides into the G groove again.Make the clinohedral 7 among Fig. 1 move down into extreme position, outwards promote back-up block 8 and be stretched over extreme position, its outer face exceeds the straightedge aerofoil of housing 1, and promptly centralizer is in the diameter maximum rating.Play controlled effect in drilling process, well track is effectively controlled.
After the termination of pumping for the second time, back-up block 8 is withdrawn into the limit once more inwards.Turn on pump flushes again again, successively circulation.After the termination of pumping, all be the minor diameter state, guarantee, descend drilling tool safety.
Mushroom among Fig. 12 constitutes mud pressure difference signal mechanism with the upper end horn mouth of upper spindle 4.Its effect is to cooperate with the ground pressure instrument, and the reducing status information of down-hole centralizer is provided for operating personnel.Its operating principle is, state shown in Figure 1, the gap minimum of the upper port of upper spindle 4 and mushroom 2, it is the area of passage minimum, the mud pressure difference maximum that produces, cam guide finger 13 is in C1 (C2) position of G groove among Fig. 3 at this moment, and back-up block 8 is withdrawn into extreme position inwards, i.e. centralizer diameter minimum.Upper spindle 4 moves down, and then area of passage becomes big, and the mud pressure difference diminishes.When cam guide finger 13 moved to B1 (B2) position of G groove among Fig. 3, back-up block 8 was concordant with the straightedge aerofoil of housing 1, and promptly the centralizer diameter is straight through equating with the straightedge aerofoil of housing 1.Upper spindle 4 further moves down, and then area of passage is bigger, and the mud pressure difference is littler, and when cam guide finger 13 moved to A1 (A2) position of G groove among Fig. 3, back-up block 8 outwards was stretched over the limit, is higher than the straightedge aerofoil of housing 1, i.e. centralizer diameter maximum.This shows, show by the ground pressure instrumented data, just can monitor well under the reducing state of centralizer, this mechanical pressure signal mechanism, very simple, practical and reliable, be another innovation part of the present utility model.
Claims (6)
1. drilling well remote control reducing centralizer, comprise housing (1), press mechanism, diameter changing mechanism, controlling organization and signaling gear five parts, it is characterized in that, housing (1) is a monolithic, its external surface has three straightedge aerofoils, press mechanism by upper spindle (4), lower spindle (10), return spring (5), spring base (6) and dummy piston (15) are formed, diameter changing mechanism is by clinohedral (7), three back-up blocks (8) and middle sealing (9) are formed, controlling organization is by cam body (12), cam guide finger (13) and last, lower bearing (11,21) form, signaling gear is made up of mushroom head (2) and upper spindle (4) top horn mouth, mushroom head (2) is installed on housing (1) the upper top internal chamber wall, upper spindle (4) and lower spindle (10) adopt engage thread to link into an integrated entity, be installed in below housing (1) the lumen centers mushroom head (2), install from top to bottom successively the outside of upper spindle (4): go up sealing (3), return spring (5), spring base (6), and clinohedral (7), lower spindle (10) is installed from top to bottom successively: upper bearing (metal) (11), cam body (12), lower bearing (21), bearing pressure cap (14), dummy piston (15), lower seal (16), water proof sealing (17) and lower contact (18), three back-up blocks (8) are installed in the slotted hole on 120 ° of uniform three straightedge aerofoils of housing (1) external surface circumference, the inner end of back-up block (8) is installed in 120 ° of uniform T type chutes or dovetail chute of clinohedral (7) appearance circumference, cam guide finger (13) is installed in the radial hole of housing (1) Lower Half, insert among the control chute G of cam body (12) external surface the inner end of cam guide finger (13), on, lower bearing (11,21) be installed in cam body (12) on, the bottom, bearing pressure cap (14) be installed in lower bearing (21) below, lower contact (18) and housing (1) lower end are with being threaded, in above-mentioned each parts, cam body (12) can be driven by lower spindle (10) and move up and down, can rotate again, be installed in, lower spindle (4,10) other parts on, all can only be by last, lower spindle (4,10) drive moves up and down, and can not rotate, last sealing (3) to the inner chamber between the lower seal (16) is full of lubrication oil.
2. drilling well remote control reducing centralizer according to claim 1, it is characterized in that housing (1) is a cylindrical shape, its stage casing appearance has 120 ° of uniform straightedge aerofoils of three circumference and three alternate chip areas, straightedge aerofoil upper/lower terminal respectively has tapered slope, the elongated hole that installation back-up block (8) usefulness is arranged on every straightedge aerofoil, housing (1) Lower Half has the radial hole that cam guide finger (13) usefulness is installed, and housing (1) upper/lower terminal has the box thread that connects drilling tool.
3. drilling well remote control reducing centralizer according to claim 1, it is characterized in that clinohedral (7) is cylindrical shape, axial center hole is arranged, its appearance has 120 ° of three uniform tapered planes of circumference, and respectively there is axial T type chute or the dovetail chute that cooperates usefulness together with back-up block (8) at the center of tapered plane.
4. drilling well remote control reducing centralizer according to claim 1, it is characterized in that back-up block (8) is for rectangular block-shaped, its upper/lower terminal is the semicircle cambered surface, its appearance is the cylinder cambered surface, inlaying wear-resisting stick (19) on its external surface, its inside is the inclined-plane that cooperates with clinohedral (7), and T type slippery fellow (20) or dovetail slippery fellow are arranged on this inclined-plane, there is seal groove (E) side around the back-up block (8), and middle sealing (9) is housed.
5. drilling well remote control reducing centralizer according to claim 1, it is characterized in that cam body (12) is a cylindrical shape, axial center hole is arranged, its upper and lower end have install, the cannelure of lower bearing (11,21) usefulness, its middle part external surface has the control chute (G) of bending.
6. drilling well remote control according to claim 1 becomes the border centralizer, it is characterized in that mushroom head (2) is cylindrical shape, and there is a cone at center above it, below the center cylinder circular cone plush copper is arranged, uniform several axial flowing holes (F) beyond the plush copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163870U CN201943607U (en) | 2010-11-10 | 2010-11-10 | Remote-control diameter-variable centralizer for well drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163870U CN201943607U (en) | 2010-11-10 | 2010-11-10 | Remote-control diameter-variable centralizer for well drilling |
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| CN201943607U true CN201943607U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206163870U Expired - Fee Related CN201943607U (en) | 2010-11-10 | 2010-11-10 | Remote-control diameter-variable centralizer for well drilling |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943635A (en) * | 2012-11-21 | 2013-02-27 | 中国石油大学(北京) | Diameter-changing and friction-reducing drill column centralizer |
| CN103015892A (en) * | 2012-12-27 | 2013-04-03 | 王岳 | Variable-diameter stabilizer and variable-diameter stabilizer system |
| CN103072131A (en) * | 2013-01-07 | 2013-05-01 | 重庆工商职业学院 | Deep hole machining manipulator |
| CN103696706A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Remote-control-while-drilling tapered stabilizer |
| CN106014288A (en) * | 2016-07-25 | 2016-10-12 | 东营市创元石油机械制造有限公司 | Remote-control variable diameter stabilizer for petroleum drilling |
| CN106351948A (en) * | 2016-08-29 | 2017-01-25 | 中石化石油机械股份有限公司江钻分公司 | A undermine sealing and righting thrust bearing system |
| CN107120073A (en) * | 2017-04-13 | 2017-09-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer |
| CN110080693A (en) * | 2018-01-25 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of centralising device for drilling tool |
| CN110344773A (en) * | 2019-08-21 | 2019-10-18 | 北京众英泰科能源科技有限公司 | One kind is with brill adjustable reducing stabilizer |
| CN110469266A (en) * | 2019-08-22 | 2019-11-19 | 北京众英泰科能源科技有限公司 | A kind of remote control diameter variable stabilizer and its application method |
| CN110566137A (en) * | 2019-10-17 | 2019-12-13 | 贵州高峰石油机械股份有限公司 | anti-sticking stabilizer |
| CN117514031A (en) * | 2024-01-05 | 2024-02-06 | 青州市春晖科技发展有限公司 | Casing centralizer |
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2010
- 2010-11-10 CN CN2010206163870U patent/CN201943607U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696706A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Remote-control-while-drilling tapered stabilizer |
| CN102943635B (en) * | 2012-11-21 | 2015-04-15 | 中国石油大学(北京) | Diameter-changing and friction-reducing drill column centralizer |
| CN102943635A (en) * | 2012-11-21 | 2013-02-27 | 中国石油大学(北京) | Diameter-changing and friction-reducing drill column centralizer |
| CN103015892A (en) * | 2012-12-27 | 2013-04-03 | 王岳 | Variable-diameter stabilizer and variable-diameter stabilizer system |
| CN103015892B (en) * | 2012-12-27 | 2015-10-14 | 王岳 | Tapered stabilizer and system thereof |
| CN103072131A (en) * | 2013-01-07 | 2013-05-01 | 重庆工商职业学院 | Deep hole machining manipulator |
| CN106014288B (en) * | 2016-07-25 | 2018-02-02 | 东营市创元石油机械制造有限公司 | Oil drilling remote control diameter variable stabilizer |
| CN106014288A (en) * | 2016-07-25 | 2016-10-12 | 东营市创元石油机械制造有限公司 | Remote-control variable diameter stabilizer for petroleum drilling |
| CN106351948A (en) * | 2016-08-29 | 2017-01-25 | 中石化石油机械股份有限公司江钻分公司 | A undermine sealing and righting thrust bearing system |
| CN107120073A (en) * | 2017-04-13 | 2017-09-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer |
| CN110080693A (en) * | 2018-01-25 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of centralising device for drilling tool |
| CN110344773A (en) * | 2019-08-21 | 2019-10-18 | 北京众英泰科能源科技有限公司 | One kind is with brill adjustable reducing stabilizer |
| CN110469266A (en) * | 2019-08-22 | 2019-11-19 | 北京众英泰科能源科技有限公司 | A kind of remote control diameter variable stabilizer and its application method |
| CN110566137A (en) * | 2019-10-17 | 2019-12-13 | 贵州高峰石油机械股份有限公司 | anti-sticking stabilizer |
| CN117514031A (en) * | 2024-01-05 | 2024-02-06 | 青州市春晖科技发展有限公司 | Casing centralizer |
| CN117514031B (en) * | 2024-01-05 | 2024-03-19 | 青州市春晖科技发展有限公司 | Casing centralizer |
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