CN106609659A - Hydraulic expansion type remote-control variable-diameter stabilizer - Google Patents
Hydraulic expansion type remote-control variable-diameter stabilizer Download PDFInfo
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- CN106609659A CN106609659A CN201510704643.9A CN201510704643A CN106609659A CN 106609659 A CN106609659 A CN 106609659A CN 201510704643 A CN201510704643 A CN 201510704643A CN 106609659 A CN106609659 A CN 106609659A
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- piston
- mandrel
- oil
- quiet
- cam
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
Abstract
The invention relates to a hydraulic expansion type remote-control variable-diameter stabilizer which comprises a body and a lower connector, wherein the upper end of the body and the lower end of the lower connector are connected to a drill stem through threads; an upper core shaft and a spring seat are arranged at the upper end in the body, and a restoration spring is arranged between the upper core shaft and the spring seat; a lower core shaft, a support barrel and a signal column are arranged at the lower end in the body; an upper thrust bearing, a cam, a lower thrust bearing, a balance piston and a differential-pressure piston are arranged outside the tubular lower core shaft from the top to the bottom, the balance piston can freely move up and down, the differential-pressure piston is axially fixed, an annular hole formed in the upper plane position of the differential-pressure piston corresponds to an annular hole formed in the body, and a cam pin assembly which can move in a cam groove in a matched mode is arranged on the body and on the outer side of the cam. The outer diameter of the stabilizer can be controlled by switching on and off a surface borehole pump; the hydraulic expansion type remote-control variable-diameters stabilizer is characterized in that a wiper block is large in contact area and suitable for the requirement of soft formation well track control; furthermore, the wiper block is easy to replace and small in tool body strength effect in structure.
Description
Technical field
The present invention is the remote-control diameter-variable used in directional well in a kind of petroleum industry, horizontal well and extended reach well drillng operation
Regulator, downhole tool field in category drilling engineering.
Background technology
It is control well hole deviation in directional well, horizontal well and extended reach well wellbore construction, can often uses remote-control diameter-variable steady
Determine device to replace the regulator of fixed outer diameter, but the existing remote control diameter variable stabilizer developed there is a problem of it is as follows：
（1）Many piston reach regulators, righting piston is changed to be needed to take apart whole regulator, extremely inconvenient；
（2）It is too small for soft formation righting area in structure, stratum is easily embedded in, increase drilling well frictional resistance.
Chinese patent " drilling remote control diameter-changing centering guide " (201020616387.0) is supported using the support block of playground shape
Block is connected with tool interior using T-slot, once support block abrasion, needs to change, then needs entirely to dismantle whole regulator, is worked
Amount is big, extremely inconvenient, and perforate is big on the tool body of support block installation place, bulk strength is weakened obvious.
The content of the invention
In order to overcome the defect existing for above-mentioned tapered stabilizer, the invention provides a kind of hydraulic buckling type remote-control diameter-variable
Regulator, this regulator righting area is big, it is adaptable to soft formation lower curved section guide digging, and for the wiper block of abrasion is changed
Easily, it is little to tool body intensity effect in structure.
The technical scheme is that：
Hydraulic buckling type remote control diameter variable stabilizer, including body 1, the pushing mechanism, the support tube 22, signal that are arranged in body 1
Post 23 and the righting mechanism being arranged on outside body 1；
The pushing mechanism includes：The tubing string that upper mandrel 2 leads in connecting and composing with lower mandrel 15, wherein, the top of upper mandrel 2 is all provided with
There is the convex edge of the sealing cooperation that slides axially with the inwall of body 1, the downward annular space intracavity in the top convex edge of upper mandrel 2 is from top to bottom successively
Be provided with back-moving spring 3, piston body 5 and upper quiet piston 8, under quiet piston 14, the lower end of back-moving spring 3 by with the body 1 of spring base 4
Be relatively fixed connection, piston body 5 it is outer it is axially spaced be provided with body 1 slide axially upper piston body 36 that sealing coordinates and
Lower piston body 38, upper quiet piston 8, under the interval of quiet piston 14 be fixed on the inwall of body 1 and positioned at upper piston body 36 and lower piston body
38 bottoms, upper quiet piston 8, under the sealing that slides axially with piston body 5 of quiet piston 14 coordinate, upper quiet piston 8 and upper piston body
36 and lower piston body 38 respectively constitute upper cylinder oil pocket 31 and middle oil pocket 29, the quiet piston 14 with of lower piston body 38 constitutes lower oil
Cylinder oil pocket 28, back-moving spring 3 is located in the upper oil cavitie 32 that upper piston body 36 is constituted with upper mandrel 2, the two ends of back-moving spring 3 respectively with
Upper piston body 36 and the convex edge of upper mandrel 2 act on；Annular intracavity between lower mandrel 15 and support tube 22 is sequentially provided with from top to bottom
Cam 17, dummy piston 20, pressure drop piston 21, wherein, cam 17 and the spacing cooperation of cam pin assemblies 18 being located on body 1,
Dummy piston 20 and pressure drop piston 21 are spaced apart and the sealing that slides axially with body 1 and lower mandrel 15 coordinates, dummy piston
20 with quiet piston 14 constitute lower oil cavitie 26；Beacon 23 is fixed on the bottom of body 1, beacon 23 and lower core by support tube 22
Axle 15 constitutes axial grafting and coordinates.
The righting mechanism includes：It is provided with the upper cylinder barrel 6 and lower cylinder barrel 12 of the fixation of same body 1 outside body 1 from top to bottom
, upper piston 7, lower piston 11 are respectively equipped with upper cylinder barrel 6 and lower cylinder barrel 12, it is evenly equipped between upper piston 7, lower piston 11 multiple
Wiper block 9, wiper block 9 is slidably matched with upper piston 7, the conical surface of lower piston 11, by the spacing connection of jump ring 10 between wiper block 9.
Upper oil cavitie 32, middle oil pocket 29 and lower oil cavitie 26 are mutually communicated, upper cylinder oil pocket 31 and 7 groups of upper cylinder barrel 6 and upper piston
Into plunger shaft, the plunger shaft that constitutes of lower oil cylinder oil pocket 28 and lower cylinder barrel 12 and lower piston 11 respectively by oiling on body 1
Hole 30 and the insertion of lower oilhole 27, body 1 is provided with the annulus bore of the chamber between dummy piston 20 and pressure drop piston 21
25。
Such scheme is further included：
The jump ring 10 is provided with projection 35 by the circumferential recess 41 of wiper block 9 and the spacing connection of wiper block 9 on wiper block 9, interior
There is stepped hole 40, there is the anti-drop screw 39 on body 1 in stepped hole.
Cam 17 is connected by upper bearing (metal) 16 and lower bearing 19 with lower mandrel 15.
Compared with prior art, the present invention has the advantages that：Wiper block on the outside of regulator can be in upper piston
With outside bulging in the presence of lower piston, in the presence of wire circlip again can radial direction indentation, realize the function of regulator reducing,
Wiper block is fully mounted at outer body in scheme, changes easy, and single wiper block righting area is big, it is adaptable to which soft formation is oblique
Well section guide digging, affects little without big perforate on body in structure on bulk strength.
Description of the drawings
Fig. 1 is a kind of structure and off working state sectional view of hydraulic buckling type remote control diameter variable stabilizer of the present invention.
Fig. 2 is that a kind of hydraulic buckling type remote control diameter variable stabilizer of the present invention is flushing cross-sectional operational views.
Fig. 3 is that a kind of hydraulic buckling type remote control diameter variable stabilizer of the present invention is stretching out cross-sectional operational views.
Fig. 4 is the E-E schematic cross-sections in Fig. 1.
Fig. 5 is the F-F schematic cross-sections in Fig. 2.
Fig. 6 is the G-G schematic cross-sections in Fig. 3.
Fig. 7 is wiper block structural representation.
Fig. 8 is upper piston structural representation.
Fig. 9 is piston body structural representation.
Description of symbols in figure：
1-body, 2-upper mandrel, 3-back-moving spring, 4-spring base, 5-piston body, 6-upper cylinder barrel, 7-upper piston,
8-upper quiet piston, 9-wiper block, 10-jump ring, 11-lower piston, 12-lower cylinder barrel, 13-piston pin, 14-under quiet piston,
15-lower mandrel, 16-upper bearing (metal), 17-cam, 18-cam pin assemblies, 19-lower bearing, 20-dummy piston, 21-pressure
Difference piston, 22-support tube, 23-beacon, 24-lower contact, 25-annulus bore, 26-lower oil cavitie, 27-lower oilhole, 28-
Lower oil cylinder oil pocket, 29-middle oil pocket, 30-upper oil hole, 31-upper cylinder oil pocket, 32-upper oil cavitie, 33-outer conical surface, 34-
Internal conical surface, 35-projection, 36-upper piston body, 37-oil through, 38-lower piston body, 39-anti-drop screw, 40-step
Hole, 41-groove.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention is described in further detail.
Embodiment 1
As shown in figure 1, the hydraulic buckling type remote control diameter variable stabilizer includes body 1 and lower contact 24, the upper end of body 1 and lower contact
24 lower ends are connected to drill string using screw thread；The inner upper end of body 1 is provided with mandrel 2 and spring base 4, in upper mandrel 2 and spring base 4
Between be provided with compressible back-moving spring 3；The interior lower end of body 1 is provided with lower mandrel 15, support tube 22, beacon 23, core under tubulose
Axle 15 is outer to be provided with from top to bottom thrust upper bearing (metal) 16, cam 17, thrust lower bearing 19, the dummy piston that can freely up and down move
20th, there is annulus bore 25 pressure drop piston 21 on the pressure drop piston 21 on the body 1 of plan-position, in the outside of cam 17 correspondence body 1
It is provided with the cam pin assemblies 18 of the routing motion in the groove of cam 17；Described upper mandrel 2 and lower mandrel 15 is upper and lower two spiral shells
Stricture of vagina connects, intermediate hollow, and inside is fluid passage.
The outer middle side part of body 1 is provided with from top to bottom connected upper cylinder barrel 6, upper piston 7, the wiper block 9, lower piston of same body 1
11 and with body 1 be connected lower cylinder barrel 12, upper piston 7 and lower piston 11 it is just the same in structure, have outer conical surface 33 thereon
（As shown in Figure 8）, fluted 41 on wiper block 9, wire circlip 10 is provided with thereon, there is projection 35 on wiper block 9, it is interior
There is stepped hole 40, there is the anti-drop screw 39 on body 1 in hole, the upper and lower ends of wiper block 9 have internal conical surface 34（Such as Fig. 7
It is shown）.
As shown in figure 1, piston body 5 being provided with outside the hypomere of upper mandrel 2 and the axial restraint of piston pin 13 being relied on body 1
Upper quiet piston 8, under quiet piston 14, upper quiet piston 8 and under quiet piston 14 have sealing function with body 1 in outside, it is same in inner side
Piston body 5 has sealing function, has respectively the ibid He of cylinder barrel 6 on quiet piston 14 on the corresponding body 1 of plane with in upper quiet piston 8
Upper oil hole 30 and lower oilhole 27 that lower cylinder barrel 12 is connected.Be provided with upper piston body 36 on piston body 5, lower piston body 38 and
The oil through 37 of plane close on lower piston body 38（As shown in Figure 9）；Upper quiet piston 8 ibid forms upper cylinder oil between piston body 36
Chamber, under lower oil cylinder oil pocket 28 is formed between quiet piston 14 and lower piston body 38, dummy piston 20 forms lower oil with between quiet piston 14
Chamber 26, upper quiet piston 8 is with oil pocket 29 in being formed between lower piston body 38, the top piston of upper mandrel 2（Convex edge at the top of also referred to as）Ibid live
Between cock body 36 formed upper oil cavitie 32, upper oil cavitie 32, middle oil pocket 29 and the insertion of lower oil cavitie 26 in structure, upper cylinder oil pocket 31, under
Oil cylinder oil pocket 28 is each independent.
As shown in figure 1, there is the circumferentially equally distributed wiper block of multi-disc on the tapered stabilizer body 1 of controllable diameter changeable regulator
9, due to the effect of taper seat, wiper block 9 by upper piston 7 and lower piston 11 produce be axially opposite motion and be pushed outwardly, surely
Determine device external diameter and become big；Upper piston 7 and lower piston 11 are produced after axially opposite motion, and the wiper block 9 being pushed outwardly is by wire circlip
10 retract, and regulator external diameter diminishes.The reducing control of controllable diameter changeable regulator is to control upper piston 7 and the generation of lower piston 11
Axially-movable distance, move toward one another distance is bigger, and regulator external diameter is bigger.
Hydraulic buckling type remote control diameter variable stabilizer reducing process is：
Tapered stabilizer inside is pump pressure in drill string after turn on pump, and the annulus bore 25 of tapered stabilizer bottom draws annular space pressure
Enter the lower oil cavitie 26 to instrument, the effect of dummy piston 21 is that the pressure of annular space is incorporated into into lower oil cavitie 26；Upper oil cavitie 32, in
Oil pocket 29 and the insertion of lower oil cavitie 26, so the pressure of upper oil cavitie 32 is annular space pressure；During drilling the drilling tool of tapered stabilizer bottom and
There is pressure consumption in drill bit, drill string is intrinsic pressure powerful in annular space pressure, and on the piston of upper mandrel 2 plane will by pressure action in drill string,
Lower plane will be by annular space pressure action, therefore downward power is descending and compression reseting spring 3 to produce mandrel 2, while
The lower mandrel 7 and piston body 5 being fixed together is also descending, it is descending during upper oil cavitie 32 reduce, middle oil pocket 29 becomes big, oils
, by oil pocket 29 and lower oil cavitie 26 in inflow, the change in volume of lower oil cavitie 26 is then by the axially free of dummy piston 20 for the fluid of chamber 32
Move to compensate；Upper cylinder oil pocket 31 and the lower volume of oil cylinder oil pocket 28 are reduced during descending, and fluid then passes through respectively upper oil hole
30 and lower oilhole 27 enter into cylinder barrel 6 and lower cylinder barrel 12 so as to promote upper piston 7 and lower piston 11 to be axially opposite motion, by
In the effect of taper seat, wiper block 9 is pushed outwardly, and regulator external diameter becomes big.
After termination of pumping, instrument internal and external pressure balance, the resilience of back-moving spring 3, mandrel 2 and lower mandrel 15 are up in promotion, on
Upper oil cavitie 32 during row, middle oil pocket 29 reduces, and middle oil pocket 29 and the fluid of lower oil cavitie 26 will flow into upper oil cavitie 32, lower oil cavitie 26
Change in volume then being free to move axially compensating by dummy piston 20；Upper cylinder oil pocket 31 and lower oil cylinder oil during descending
The body of chamber 28 becomes big, and the fluid in upper cylinder barrel 6 and lower cylinder barrel 12 then passes through upper oil hole 30 respectively and lower oilhole 27 enters into upper cylinder
Oil pocket 31 and lower oil cylinder oil pocket 28, upper piston 7 and lower piston 11 make axially opposite motion, wiper block in the presence of annular space pressure
9 are retracted by wire circlip 10, and regulator external diameter diminishes, and returns to off working state（As Figure 1 and Figure 4）.
During upper mandrel 2 and the uplink and downlink of lower mandrel 7, cam mechanism action therewith has " W " shape on cam
Groove, this groove coordinates with cam pin assemblies 18, this structure be with conventional regulator Stroke Control cam structure it is the same, can be right
The downward storke of lower mandrel 15 is controlled, and has a short stroke and a Long travel, and cam moves mistake up and down after termination of pumping turn on pump again
Journey alternately once, then descends the descending stroke of mandrel 15 also to change in short stroke and Long travel.When in short stroke, stroke end
, regulator is in working condition is flushed as shown in Figure 2 and Figure 5, and this state diameter change is little；When in Long travel, stroke
End, in working condition is stretched out as shown in Figure 3 and Figure 6, this state diameter changes greatly for regulator.It is steady that reducing is controlled in this approach
Determine the size of device diameter change, so circulation, each turn on pump tool external diameter size switches once.
Under different external diameter sizes, because the descending stroke of lower mandrel 7 is different, it is short that instantly mandrel 7 is descending
During stroke, the descending end of a period of lower mandrel 7 does not entangle beacon 23, could not almost play a part of throttling to drilling fluid, such as Fig. 2 institutes
Show；Instantly mandrel 7 is descending when being Long travel, and beacon 23 is entangled in the descending end of a period of lower mandrel 7, and drilling fluid area of passage is significantly contracted
It is little, the effect of throttling is produced, as shown in figure 3, the pump pressure of ground drilling pump becomes big.This pump pressure is exactly based on during drilling well
Change determines the diameter situation of down-hole tapered stabilizer.
Wiper block is to produce the change of radial diameter using the axially-movable of upper lower inclined plane, so that tapered stabilizer
There is corresponding change in working condition, it is of course also possible to directly promote wiper block to piston is stretched out using conventional tool bore
Version；In addition it is also feasible to be changed into multi-disc from 3 shown in the quantity of wiper block.
Claims (3)
1. hydraulic buckling type remote control diameter variable stabilizer, including body (1), the pushing mechanism, the support tube that are arranged in body (1)
(22), beacon (23) and it is arranged on body (1) righting mechanism outward, it is characterised in that the pushing mechanism includes：Upper mandrel
(2) tubing string led in connecting and composing with lower mandrel (15), upper mandrel (2) top be equipped with slide axially with body (1) inwall it is close
The convex edge that envelope coordinates, the downward annular space intracavity in upper mandrel (2) top convex edge is sequentially provided with from top to bottom back-moving spring (3), dynamic work
Cock body (5) and upper quiet piston (8), under quiet piston (14), wherein, back-moving spring (3) lower end by with spring base（4）Body（1）
It is relatively fixed connection, outward axially spaced being provided with slides axially the upper piston body that sealing coordinates piston body (5) with body (1)
And lower piston body (38), (36) upper quiet piston (8), under quiet piston (14) interval be fixed on body (1) inwall and positioned at upper piston
Body (36) and lower piston body (38) bottom, upper quiet piston (8), under quiet piston (14) slide axially with piston body (5) sealing
Coordinate, upper quiet piston (8) respectively constitutes upper cylinder oil pocket with upper piston body (36) and lower piston body (38)（31）With middle oil pocket
（29）, lower piston body (38) quiet piston (14) composition time oil cylinder oil pocket with（28）, back-moving spring (3) is located at upper piston body (36)
With the upper oil cavitie of upper mandrel (2) composition（32）Interior, back-moving spring (3) two ends are convex with upper piston body (36) and upper mandrel (2) respectively
Along effect；Annular intracavity between lower mandrel (15) and support tube (22) is sequentially provided with from top to bottom cam (17), dummy piston
(20), pressure drop piston (21), wherein, cam (17) and the cam pin assemblies being located on body (1)（18）Spacing cooperation, balance is lived
Plug (20) and pressure drop piston (21) are spaced apart and the sealing that slides axially with body (1) and lower mandrel (15) coordinates, and balance is lived
Plug (20) quiet piston (14) with constitutes lower oil cavitie（26）；Beacon (23) is fixed on body (1) bottom by support tube (22),
Beacon (23) constitutes axial grafting and coordinates with lower mandrel (15)；The righting mechanism includes：Set from top to bottom outside body (1)
There are the fixed upper cylinder barrel (6) of same body (1) and lower cylinder barrel (12), in upper cylinder barrel (6) and lower cylinder barrel (12) upper piston is respectively equipped with
(7), lower piston (11), are evenly equipped with multiple wiper blocks (9), wiper block (9) and upper work between upper piston (7), lower piston (11)
Plug (7), lower piston (11) conical surface are slidably matched, by the spacing connection of jump ring (10) between wiper block (9)；Upper oil cavitie（32）, in
Oil pocket（29）And lower oil cavitie（26）It is mutually communicated, the piston that upper cylinder oil pocket (31) is constituted with upper cylinder barrel (6) and upper piston (7)
Chamber, lower oil cylinder oil pocket（28）The plunger shaft constituted with lower cylinder barrel (12) and lower piston (11) passes through respectively body（1）On oil
Hole（30）With lower oilhole（27）Insertion, body (1) is provided with the chamber between dummy piston (20) and pressure drop piston (21)
Annulus bore（25）.
2. the hydraulic buckling type remote control diameter variable stabilizer according to claim 1, it is characterised in that：The jump ring 10 passes through
Wiper block（9）Circumferential recess（41）With wiper block（9）Spacing connection, in wiper block（9）It is provided with projection（35）, inside there is stepped hole
（40）, have installed in body in stepped hole（1）On anti-drop screw 39.
3. the hydraulic buckling type remote control diameter variable stabilizer according to claim 1 and 2, it is characterised in that：Cam (17) passes through
Upper bearing (metal) (16) and lower bearing (19) are connected with lower mandrel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704643.9A CN106609659B (en) | 2015-10-27 | 2015-10-27 | Hydraulic buckling type remote control diameter variable stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704643.9A CN106609659B (en) | 2015-10-27 | 2015-10-27 | Hydraulic buckling type remote control diameter variable stabilizer |
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| CN106609659A true CN106609659A (en) | 2017-05-03 |
| CN106609659B CN106609659B (en) | 2018-10-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930698A (en) * | 2017-05-12 | 2017-07-07 | 西南石油大学 | A kind of tool-face positioner |
| CN106968615A (en) * | 2017-05-15 | 2017-07-21 | 中石化石油工程机械有限公司研究院 | Pressure type tapered stabilizer |
| CN109505533A (en) * | 2018-12-10 | 2019-03-22 | 盐城庆隆机械有限公司 | A kind of novel hydraulic elastic centralizer |
| CN109519124A (en) * | 2018-12-14 | 2019-03-26 | 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 oil drilling two-dimensional guide tool assembly and guidance method |
| CN114233209A (en) * | 2021-12-18 | 2022-03-25 | 江苏航天鸿鹏数控机械有限公司 | Hydraulic diameter-variable centralizer |
| CN116624109A (en) * | 2023-07-25 | 2023-08-22 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
| CN114233209B (en) * | 2021-12-18 | 2024-04-30 | 江苏航天鸿鹏数控机械有限公司 | Hydraulic reducing centralizer |
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| US8978783B2 (en) * | 2011-05-26 | 2015-03-17 | Smith International, Inc. | Jet arrangement on an expandable downhole tool |
| CN204419067U (en) * | 2015-01-09 | 2015-06-24 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drilling well controllable diameter changeable stabilizer |
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| US5447207A (en) * | 1993-12-15 | 1995-09-05 | Baroid Technology, Inc. | Downhole tool |
| CN201031662Y (en) * | 2007-04-11 | 2008-03-05 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Down-hole controllable type boring tool by-pass valve |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930698A (en) * | 2017-05-12 | 2017-07-07 | 西南石油大学 | A kind of tool-face positioner |
| CN106968615A (en) * | 2017-05-15 | 2017-07-21 | 中石化石油工程机械有限公司研究院 | Pressure type tapered stabilizer |
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| CN109505533A (en) * | 2018-12-10 | 2019-03-22 | 盐城庆隆机械有限公司 | A kind of novel hydraulic elastic centralizer |
| CN109519124A (en) * | 2018-12-14 | 2019-03-26 | 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 oil drilling two-dimensional guide tool assembly and guidance method |
| CN109519124B (en) * | 2018-12-14 | 2024-01-23 | 中国石油天然气集团有限公司 | Two-dimensional guiding tool assembly and guiding method for petroleum drilling |
| CN114233209A (en) * | 2021-12-18 | 2022-03-25 | 江苏航天鸿鹏数控机械有限公司 | Hydraulic diameter-variable centralizer |
| CN114233209B (en) * | 2021-12-18 | 2024-04-30 | 江苏航天鸿鹏数控机械有限公司 | Hydraulic reducing centralizer |
| CN116624109A (en) * | 2023-07-25 | 2023-08-22 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
| CN116624109B (en) * | 2023-07-25 | 2023-09-19 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
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| Publication number | Publication date |
|---|---|
| CN106609659B (en) | 2018-10-23 |
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Effective date of registration: 20211009 Address after: 100027 Chaoyangmen North Street, Chaoyang District, Chaoyang District, Beijing Patentee after: SINOPEC Group Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |
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