CN106050159A - Drill string clutching tool - Google Patents
Drill string clutching tool Download PDFInfo
- Publication number
- CN106050159A CN106050159A CN201610654696.9A CN201610654696A CN106050159A CN 106050159 A CN106050159 A CN 106050159A CN 201610654696 A CN201610654696 A CN 201610654696A CN 106050159 A CN106050159 A CN 106050159A
- Authority
- CN
- China
- Prior art keywords
- cylinder sleeve
- mandrel
- spline
- sleeve body
- drill string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- 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
-
- 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
- E21B7/046—Directional drilling horizontal drilling
Abstract
The invention discloses a drill string clutching tool. The drill string clutching tool comprises a cylinder sleeve. A pressuring bearing mechanism, an upper mandrel, a spline body, a lower mandrel and a transmission shaft are arranged in the cylinder sleeve according to an axial direction. The upper mandrel is assembled into the cylinder sleeve through a guide mechanism and a reset spring. The upper end of the upper mandrel is connected with the bottom end of the pressure bearing mechanism. The inner periphery of the spline body is axially provided with two rows of inner spline teeth at intervals. The outer periphery of the upper portion of the lower mandrel is provided with outer spline teeth matched with the inner spline teeth on the inner periphery of the spline body. The lower mandrel is assembled to the spline body through the outer spline teeth. The upper end of the transmission shaft is connected with the bottom end of the lower mandrel. A serial bearing is arranged between the transmission shaft and the cylinder sleeve. The lower end of the transmission shaft extends out of the cylinder sleeve. The drill string clutching tool is suitable for increasing orientation efficiency during oriented slide drilling.
Description
Technical field
The present invention relates to downhole tool technical field, specifically a kind of drill string clutch instrument.
Background technology
Along with the further exploitation of oil, increasing directional well, horizontal well are used in petroleum drilling technology, in portion
Region-by-region even uses cluster well, such well bore to be designed as drilling well and provides cost savings, and also can more preferably, more accurately be drilled into design
Target position, improves production efficiency and yield.Meanwhile, the casing programme of its complexity, well track also bring the highest to drilling technology
Difficulty, be first accomplished by solving the oriented sliding problem that the pressure of the drill applies difficulty when creeping into.
Such as: in directional well, rotating disk must be checked when directional inclination, prevent drill string from rotating, with skew-swept airfoil or other
Mud motor directly drives drill bit to rotate, and carries out brokenly rock, the feeding and top drilling tool can only slide.Well bore due to distance
Oblique or be horizontally orientated to, drilling tool creeps into for flat time in well, and frictional resistance is very big, and most of pressure of drilling tool deadweight transmission is disappeared
Consumption is overcoming on drilling tool frictional resistance, it is difficult to being really delivered on drill bit, terrestrial operation engineer is even difficult to know the accurate of drill bit
Pressure, thus rate of penetration is very limited, and sometimes pressurizes by force for solving drill bit backing pressure problem and also times to being easily caused
The accidents such as brill.
For the backing pressure problem in directed drilling, occur in that some anti-backing pressure instruments the most both at home and abroad, such as thruster, vibration
Devices etc., can solve drill bit backing pressure problem to a certain extent, but using effect is inconspicuous, and use condition also has certain limitation.
Summary of the invention
It is an object of the invention to: for above-mentioned the deficiencies in the prior art, it is provided that one is applicable to oriented sliding and creeps into and carry
The drill string clutch instrument of highly directional efficiency.
The technical solution used in the present invention is, a kind of drill string clutch instrument, including cylinder sleeve body, with axially in described cylinder sleeve body
Order is disposed with bearing mechanism, upper mandrel, spline body, lower mandrel and power transmission shaft, and described upper mandrel passes through guiding mechanism and reset
Spring is assemblied in cylinder sleeve body, and on this, the upper end of mandrel is connected with the bottom of bearing mechanism, between the inner circumferential that described flower is healthy and strong is axial
Every being provided with two row's inner spline gears, the periphery on described lower mandrel top is provided with the inner spline gear being healthy and strong in inner circumferential with flower and matches
External spline teeth, this lower mandrel is assemblied on spline body by external spline teeth, the bottom of the upper end of described power transmission shaft and lower mandrel
Connecting, be provided with string bearing between this power transmission shaft and cylinder sleeve body, cylinder sleeve body is extended in this power transmission shaft lower end.
Described bearing mechanism is mainly made up of valve seat, valve rod, piston, and described valve seat is assemblied on cylinder sleeve body, described valve rod
It is axially mounted on the valve seat on cylinder sleeve body, the valve seat outside this valve rod is provided with multiple through hole, and the end of this valve rod and dress
Fitting over the orifice plate carrier matched in clearance on piston, described piston is fixing with the upper mandrel upper end in cylinder sleeve body to be connected.
Further, described valve rod and orifice plate carrier are with conical surface matched in clearance.
Described guiding mechanism is mainly made up of cam and the spacer pin being assemblied in cylinder sleeve body, and described cam two ends are by pushing away
Power bearing is assemblied on mandrel, and this cam outer wall is provided with " W " track guide chute, and described spacer pin extends radially to cam
Guide chute in.
Further, described spacer pin is mainly made up of block, slide block and the back-moving spring of blind cavernous structure, and described block fills
Fitting on cylinder sleeve body, described slide block is assemblied in block by back-moving spring, and this slide block mates with the guide chute of cam.
Described spline body is connected with upper mandrel by connector.
Further, the periphery of described spline body is provided with external spline teeth, and this flower is healthy and strong by external spline teeth and cylinder sleeve body inner circumferential
Engagement.
Form annular clearance between described lower mandrel and cylinder sleeve body inner circumferential, be provided with float in this annular clearance, below float
Pressure relief vent on respective cylinder body.
Further, described cylinder sleeve body is mainly made up of upper cylinder sleeve, transition joint, middle cylinder sleeve and lower cylinder sleeve.
The invention has the beneficial effects as follows:
The present invention is applicable to oriented sliding and creeps into improve directive efficiency, and adaptation oriented sliding creeps into and creeps into non-slip.Pass through
Make lower drill on drill string clutch instrument separate, make the upper drilling string rotary drilling of slipping drilling originally, reduce rubbing of upper drilling string
Resistance, in order to what the pressure of the drill of applying more preferably, was more concentrated is delivered to drill bit, reaches to solve torr when directional well, horizontal well slipping drilling
Pressure problem, improves rate of penetration.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the schematic diagram that in Fig. 1, clutch performs assembly.
Fig. 3 is the structural representation of guiding mechanism in Fig. 1.
Fig. 4 is the structural representation of the spline body in Fig. 1 and Fig. 2.
Fig. 5 is the C-C schematic diagram of Fig. 4.
Fig. 6 is the D-D profile of Fig. 4.
Fig. 7 is the structural representation of lower mandrel.
Fig. 8 is the E-E schematic diagram of Fig. 7.
Fig. 9 is the F-F schematic diagram of Fig. 7.
Figure 10 is the A-A schematic diagram in Fig. 1.
Figure 11 is the B-B schematic diagram in Fig. 2.
Code name implication in figure: 10-valve seat；11-bonnet；12-valve rod；13-pin；The upper cylinder sleeve of 20-；21-shank；22-limits
Position pin；23-back-moving spring；30-orifice plate carrier；31-piston；32-sealing ring；33-bearing；34-cam；35-carries on the back cap；36-bearing；
37-back-moving spring；The upper mandrel of 38-；40-transition joint；50-connector；51-sealing ring；Cylinder sleeve in 60-；61-spline body；62-
Lower mandrel；63-float；64-sealing ring；Cylinder sleeve under 70-；71-pressure cap；72-goes here and there bearing inner race；73-ball；Outside 74-string bearing
Circle；75-is anti-to be capped off；76-power transmission shaft；W track chute；W1 primary importance；The W2 second position；W3 the 3rd position；
W4 the 4th position；W5 the 5th position.
Detailed description of the invention
Seeing shown in Fig. 1 to Figure 11, the present invention is drill string clutch instrument, including cylinder sleeve body.Described cylinder sleeve body is mainly by upper
Cylinder sleeve, transition joint, middle cylinder sleeve and lower cylinder sleeve composition.Main by under the upper cylinder sleeve 20 of mandrel in correspondence 38, correspondence from top to bottom
The middle cylinder sleeve 60 of mandrel 62, the lower cylinder sleeve 70 of corresponding power transmission shaft 76, play the centre of interconnection function between upper cylinder sleeve and middle cylinder sleeve
Joint.
See shown in Fig. 1, Figure 10, Figure 11: in above-mentioned cylinder sleeve body with axial order be disposed with bearing mechanism, upper mandrel 38,
Spline body 61, lower mandrel 62 and power transmission shaft 76.Described upper mandrel 38 is assemblied in cylinder sleeve body by guiding mechanism and back-moving spring 37
In, the upper end of this mandrel is connected with the bottom of bearing mechanism.See shown in Fig. 2, Fig. 4, Fig. 5, Fig. 6: the inner circumferential that described flower is healthy and strong
Axially spaced-apart is provided with two row's inner spline gears, sees shown in Fig. 7, Fig. 8, Fig. 9: the periphery on described lower mandrel 62 top be provided with
The external spline teeth that the inner spline gear that flower is healthy and strong in inner circumferential matches, and the be healthy and strong inner spline gear of upper row of inner circumferential of flower is corresponding with lower core
On axle 62, exclusive spline tooth finger coordinates.The inner spline gear height of spline body is consistently higher than the outer flower on lower mandrel 62 in the axial direction
Key tooth height.This lower mandrel 62 is assemblied on spline body by external spline teeth, the upper end of described power transmission shaft 76 and lower mandrel 62
Bottom connects, and is provided with string bearing between this power transmission shaft 76 and cylinder sleeve body, and cylinder sleeve body is extended in this power transmission shaft 76 lower end.Wherein,
Back of the body cap 35 it is provided with between guiding mechanism and the upper end of back-moving spring；Back-moving spring 37 lower end is kept out in correspondence with cylinder sleeve body place
Cylinder sleeve 20 lower end connects on the top end face of transition joint 40, and this transition joint 40 lower end is connected with the top of middle cylinder sleeve 60；Above-mentioned
String bearing is mainly made up of string bearing inner race 72, ball 73 and string bearing outer ring 74, and this string bearing inner race 72 is joined with power transmission shaft 76
Closing, this string bearing outer ring coordinates with lower cylinder sleeve 70, and the upper end of string bearing is provided with pressure cap 71, the lower end kept out at lower mandrel
It is provided with anti-lost 75, keeps out lower cylinder sleeve 70 of emerging bottom string bearing；The periphery of described spline body is provided with external spline teeth, and this flower is healthy and strong
Engaged with cylinder sleeve body inner circumferential by external spline teeth.
Above-mentioned bearing mechanism is mainly made up of valve seat 10, valve rod 12, piston 31, and described valve seat 10 is assemblied in by pin 13
On cylinder sleeve body, on the valve seat 10 that described valve rod 12 is axially mounted on cylinder sleeve body, the valve seat 10 outside this valve rod 12 is provided with many
Individual through hole, and the end of this valve rod 12 and orifice plate carrier 30 matched in clearance being assemblied on piston 31, described piston 31 and cylinder sleeve body
Interior upper mandrel 38 upper end is fixing to be connected.The present embodiment is preferred, and above-mentioned valve rod 12 is axially mounted on cylinder sleeve body by bonnet 11
Valve seat 10 on；Above-mentioned valve rod 12 and orifice plate carrier 30 are with conical surface matched in clearance.Wherein, be provided with between piston 31 and cylinder sleeve body close
Seal 32.
Shown in Figure 3: above-mentioned guiding mechanism is mainly by cam 34 and the spacer pin on shank 21 in being assemblied in cylinder sleeve body
22 compositions, described cam 34 two ends are assemblied on mandrel 38 by a bearing (33,36) respectively, this cam 34 outer wall set
Having " W " track guide chute, described spacer pin 22 extends radially in the guide chute of cam 34.The present embodiment is preferred, described
Spacer pin 22 is mainly made up of the block of blind cavernous structure, slide block and back-moving spring 23, and described block is assemblied on cylinder sleeve body, institute
Stating slide block to be assemblied in block by back-moving spring 23, this slide block mates with the guide chute of cam 34.
It addition, above-mentioned spline body 61 is connected with upper mandrel 38 by connector 50；The end of above-mentioned lower mandrel 62 is provided with
Float 63 and plug, the cylinder sleeve body wall between float 63 and plug has through hole.Wherein, at lower mandrel upper end and connector
Commonly connected part between be provided with sealing ring 51；Between float 63 and middle cylinder sleeve 60, it is all provided with between float 63 and lower mandrel 62
There is sealing ring 64；Form annular clearance between described lower mandrel and cylinder sleeve body inner circumferential, be provided with float in this annular clearance, under float
Pressure relief vent on side's respective cylinder body；Above-mentioned spline body constitutes clutch together with upper mandrel 38, lower mandrel 62 and middle cylinder sleeve 60 etc.
Perform assembly (shown in Figure 2).
Work process:
When upper mandrel 38 is in original position, spacer pin 22 is positioned in the guide chute of cam 34 at primary importance W1, transmission
Axle 76 is in contraction transition.
For the first time after turn on pump, under mud pressure effect, mandrel 38 is forced to move down, the cam 34 on upper mandrel 38
Also with moving down, spacer pin 22 is fixed on the first cylinder sleeve simultaneously, will not move so that cam 34 is relative to spacer pin 22
Raw rotating, spacer pin 22 slides in guide chute, and spacer pin 22 slides the primary importance by track chute W correspondence guide chute
To at second position W2 of track chute W correspondence guide chute at W1, now spacer pin 22 with guide sliding leaning, when cam 34
When no longer moving down, upper mandrel 38 also cannot continue to move down, and the distance that this stage, above mandrel 38 was descending is L1.Meanwhile,
The distance of the most downward descending L1 of piston 31, orifice plate carrier 30.Now, valve rod 12 is still located in orifice plate carrier 30 endoporus, and all mud must
Must pass through from valve rod 12 and orifice plate carrier 30, a narrow and small annular space formed, now area of passage is minimum, so mud pressure is
High；Meanwhile, the power transmission shaft 76 below upper mandrel 38 is still in stator transition.
Subsequently, slush pump stops for the first time, and mud annular pressure sheds, under the effect of back-moving spring 37, and upper mandrel 38
Moving up, now, spacer pin 22 slides to the 3rd at second position W2 of the track chute W correspondence guide chute of cam 34
Putting at W3, orifice plate carrier 30 returns to initial position.
When slush pump second time starts, and upper mandrel 38 moves down, and cam 34 moves down the most therewith, and spacer pin 22 is from cam 34
Track chute W correspondence guide chute the 3rd position W3 at slide at the 4th position W4, then slide to the 5th position W5, this time limit
Position pin 22 leans with guide chute, and cam 34 no longer moves down, and upper mandrel 38 also cannot continue to move down, this stage upper mandrel
38 descending distances are L2.Meanwhile, the distance of piston 31, orifice plate carrier 30 also downward L2.Now, valve rod 12 leaves orifice plate carrier
30 endoporus, the annulus access between them becomes suddenly big, when comparing with first time turn on pump, in the case of discharge capacity is identical, due to
Circulation passage becomes big, makes the mud pressure of system reduce；Meanwhile, upper mandrel 38 is joined with lower mandrel 62 tooth finger by spline body 61
Close, arrived the power transmission shaft 76 driving lower mandrel 62 lower end to connect and rotated.
Subsequently, slush pump second time stops, and mud annular pressure sheds, under the effect of back-moving spring 37, and upper mandrel 38
Moving up, upper mandrel 38 is coordinated with lower mandrel 62 tooth finger by spline body 61 and separates, now, and cam 34, orifice plate carrier 30 etc.
All return to the most initial position.
As above circulate, thus pass through startup and the stopping of slush pump, control the state whether power transmission shaft 76 rotates.Work as mud
When pressure is higher, spline body 61 of the present invention is in disengaged condition with lower mandrel 62, can be used for oriented sliding and creeps into, can effectively solve
De-pressure problem；When mud pressure is relatively low, in the present invention, spline body 61 and lower mandrel 62 are in engagement, can be used for non-slip
When creeping into.Being applicable to oriented sliding and creep into improve directive efficiency, adaptation oriented sliding creeps into and creeps into non-slip.By making brill
On post clutch instrument, lower drill separates, and makes the upper drilling string rotary drilling of slipping drilling originally, reduces the frictional resistance of upper drilling string, with
What the pressure of the drill just applied more preferably, was more concentrated is delivered to drill bit, and backing pressure when reaching to solve directional well, horizontal well slipping drilling is asked
Topic, improves rate of penetration.
The technical scheme of above example only in order to the present invention to be described, is not intended to limit.Although with reference to previous embodiment
Technical scheme the present invention has been described in detail, it will be understood by those within the art that: it still can be right
Preceding solution is modified, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, and
The essence not making appropriate technical solution departs from the spirit and scope of the present invention.
Claims (9)
1. a drill string clutch instrument, including cylinder sleeve body, it is characterised in that: it is disposed with pressure-bearing with axial order in described cylinder sleeve body
Mechanism, upper mandrel, spline body, lower mandrel and power transmission shaft, described upper mandrel is assemblied in cylinder sleeve by guiding mechanism and back-moving spring
Internal, on this, the upper end of mandrel is connected with the bottom of bearing mechanism, and the inner circumferential axially spaced-apart that described flower is healthy and strong is provided with in two rows
Spline tooth, the periphery on described lower mandrel top is provided with the external spline teeth that the inner spline gear being healthy and strong in inner circumferential with flower matches, should
Lower mandrel is assemblied on spline body by external spline teeth, and the upper end of described power transmission shaft is connected with the bottom of lower mandrel, this power transmission shaft
And being provided with string bearing between cylinder sleeve body, cylinder sleeve body is extended in this power transmission shaft lower end.
Drill string clutch instrument the most according to claim 1, it is characterised in that: described bearing mechanism is mainly by valve seat, valve rod, work
Plug composition, described valve seat is assemblied on cylinder sleeve body, and described valve rod is axially mounted on the valve seat on cylinder sleeve body, the valve outside this valve rod
Multiple through hole it is provided with on Zuo, and the end of this valve rod and the orifice plate carrier matched in clearance being assemblied on piston, described piston and cylinder
Overlap the fixing connection in internal upper mandrel upper end.
The most according to claim 2, drilling well is with compound sleeve pipe pipeline scraper, it is characterised in that: described valve rod and orifice plate carrier are with cone
Face matched in clearance.
The most according to claim 1, drilling well is with compound sleeve pipe pipeline scraper, it is characterised in that: described guiding mechanism is mainly by convex
Wheel and the spacer pin composition being assemblied in cylinder sleeve body, described cam two ends are assemblied on upper mandrel by thrust bearing, this cam
Outer wall is provided with " W " track guide chute, and described spacer pin extends radially in the guide chute of cam.
The most according to claim 4, drilling well is with compound sleeve pipe pipeline scraper, it is characterised in that: described spacer pin is mainly by blind hole
The block of shape structure, slide block and back-moving spring composition, described block is assemblied on cylinder sleeve body, and described slide block is filled by back-moving spring
Fitting in block, this slide block mates with the guide chute of cam.
Drill string clutch instrument the most according to claim 1, it is characterised in that: described spline body is by connector with upper mandrel even
Connect.
7. according to drill string clutch instrument described in claim 1 or 6, it is characterised in that: the periphery of described spline body is provided with external splines
Tooth, this flower is healthy and strong and is engaged with cylinder sleeve body inner circumferential by external spline teeth.
Drill string clutch instrument the most according to claim 1, it is characterised in that: formed between described lower mandrel and cylinder sleeve body inner circumferential
Annular clearance, is provided with float in this annular clearance, the pressure relief vent on respective cylinder body below float.
9. according to drill string clutch instrument described in claim 1 or 8, it is characterised in that: described cylinder sleeve body is mainly by upper cylinder sleeve, centre
Joint, middle cylinder sleeve and lower cylinder sleeve composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654696.9A CN106050159A (en) | 2016-08-11 | 2016-08-11 | Drill string clutching tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654696.9A CN106050159A (en) | 2016-08-11 | 2016-08-11 | Drill string clutching tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106050159A true CN106050159A (en) | 2016-10-26 |
Family
ID=57480747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610654696.9A Pending CN106050159A (en) | 2016-08-11 | 2016-08-11 | Drill string clutching tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050159A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485923A (en) * | 2019-09-06 | 2019-11-22 | 中国石油集团长城钻探工程有限公司 | A kind of half way rotation borehole trace control tool |
| CN114109252A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device for realizing full rotation orientation of drill column |
| CN114109250A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Controller for realizing drill column full-rotation composite orientation |
| CN114109251A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device and use method of composite directional drilling |
| CN114876366A (en) * | 2022-05-11 | 2022-08-09 | 西南石油大学 | Pump pressure controlled drill string composite drilling state controller |
| CN115387729A (en) * | 2022-08-02 | 2022-11-25 | 西南石油大学 | Directional drilling drill column rotation controller |
| CN115628011A (en) * | 2022-12-19 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Continuous rotary sliding drilling system and method |
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| CN105525871A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Hydraulic torque converter |
| CN206000482U (en) * | 2016-08-11 | 2017-03-08 | 中石化石油工程技术服务有限公司 | Drill string clutch instrument |
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| EP0580056A1 (en) * | 1992-07-17 | 1994-01-26 | Smith International, Inc. | Air percussion drilling assembly for directional drillig applications |
| FR2742177A1 (en) * | 1995-12-06 | 1997-06-13 | Spie Fondations | Attachment for small diameter drills for inserting posts or rods in foundations |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485923A (en) * | 2019-09-06 | 2019-11-22 | 中国石油集团长城钻探工程有限公司 | A kind of half way rotation borehole trace control tool |
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| CN114109251B (en) * | 2021-11-18 | 2023-08-22 | 西南石油大学 | Control device for composite directional drilling and use method |
| CN114109250A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Controller for realizing drill column full-rotation composite orientation |
| CN114109251A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device and use method of composite directional drilling |
| CN114109252B (en) * | 2021-11-18 | 2023-07-28 | 西南石油大学 | Control device for realizing full rotation orientation of drill string |
| CN114109252A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device for realizing full rotation orientation of drill column |
| CN114109250B (en) * | 2021-11-18 | 2023-10-27 | 西南石油大学 | Controller for realizing full-rotation composite orientation of drill string |
| CN114876366A (en) * | 2022-05-11 | 2022-08-09 | 西南石油大学 | Pump pressure controlled drill string composite drilling state controller |
| CN114876366B (en) * | 2022-05-11 | 2024-01-19 | 西南石油大学 | Pump pressure controlled drill string composite drilling state controller |
| CN115387729A (en) * | 2022-08-02 | 2022-11-25 | 西南石油大学 | Directional drilling drill column rotation controller |
| CN115387729B (en) * | 2022-08-02 | 2023-12-08 | 西南石油大学 | Directional drilling drill string rotation controller |
| CN115628011A (en) * | 2022-12-19 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Continuous rotary sliding drilling system and method |
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Application publication date: 20161026 |