CN104196452B - The guidance method of rotary steerable drilling system - Google Patents
The guidance method of rotary steerable drilling system Download PDFInfo
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- CN104196452B CN104196452B CN201410429499.8A CN201410429499A CN104196452B CN 104196452 B CN104196452 B CN 104196452B CN 201410429499 A CN201410429499 A CN 201410429499A CN 104196452 B CN104196452 B CN 104196452B
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- phase magnet
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- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000001808 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001105 regulatory Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention provides the guidance method of a kind of rotary steerable drilling system, wherein, system in the method includes: drill collar, bit drive shaft, mud tube, mud tube adapter, universal joint, mud sealing device and drill bit, and the oriented control module being connected with the inwall of drill collar；Bit drive shaft is mechanically coupled in drill collar by universal joint and oriented control module, and bit drive shaft can rotate around universal joint；Oriented control module is electromagnetic guiding structure；The method includes: by the magnetic force in electromagnetic guiding structure, bit drive shaft is oriented control.The present invention is by carrying out positioning control to bit drive shaft with the magnetic force of the oriented control module of electromagnetic guiding structure, and system structure is simple, it is easy to guides and controls.
Description
Technical field
The present invention relates to geological exploration field, in particular to a kind of rotary steerable drilling
The guidance method of system.
Background technology
At present, directional drilling system mainly has two kinds: 1) pushing type system；2) directional type
System.Wherein, pushing type system is by promoting the borehole wall on opposite, specific drilling well orientation to control
Drilling direction.Drill bit is directly directed at the drilling direction determined by directional type system.Directional type
System typically at least includes a bit drive shaft in drill collar, and bit drive shaft is by drill collar
Universal joint support, by drill collar realize rotate drive.
Fig. 1 is the rotary steerable drilling system 112 being furnished with traditional drill rod telemetry system 100
Front view.Tradition drill rod telemetry system 100 includes rig 102, drill string 106, drill bit 110
And a rotary steerable drilling system 112.Drill string 106 is supported by rig 102, permissible
108 are down extended to hole from surface, ground 104.Drill string 106 can with drill bit 110 and
Rotary steerable drilling system 112 coordinates, and is oriented drilling well.
In directed drilling, during drill collar rotates, need to keep bit drive shaft geo-stationary
And tilt towards drill collar direction, this directional type system can be in conjunction with directional controlling method, it is ensured that boring
When well tool rotates, drill bit can be to predetermined direction biasing.But, this rotary steerable drilling
The Machine Design of system is complex, guides process loaded down with trivial details.
Summary of the invention
It is an object of the invention to provide the guidance method of a kind of rotary steerable drilling system, with
Solve above-mentioned problem.
Provide the guiding side of a kind of rotary steerable drilling system in an embodiment of the present invention
Method, this system includes: drill collar, bit drive shaft, mud tube, mud tube adapter, ten thousand
Xiang Jie, mud sealing device and drill bit, and the oriented control being connected with the inwall of drill collar
Module；Bit drive shaft is mechanically coupled in drill collar by universal joint and oriented control module,
Bit drive shaft can rotate around universal joint；Oriented control module is electromagnetic guiding structure；Should
Method includes: by the magnetic force in electromagnetic guiding structure, bit drive shaft is oriented control.
Above-mentioned oriented control module includes: pair of guide rails and locating rack；Wherein, every pair of guide rail
It is oppositely arranged up and down by the guide rail that two cross sections are " L " shape and constitutes, the one of each guide rail
Side is fixed on the inwall of drill collar；Locating rack is made up of a transverse arm and a vertical arm, and it is horizontal
Cross section is "T"-shaped；Wherein, described vertical arm is parallel with the inwall of drill collar, described transverse arm position
In the middle part of the guide rail being oppositely arranged, the two ends of described vertical arm be provided with couple with guide rail
Support wheel；The opposite face of the guide rail being oppositely arranged up and down is respectively arranged with the first phase magnet group,
The position of the corresponding first phase magnet group of transverse arm is provided with the second phase magnet group；Locating rack
Transverse arm is provided with coupling pipe away from described vertical arm one end, and coupling pipe is connected with bit drive shaft；
Based on this, above by the magnetic force in electromagnetic guiding structure, bit drive shaft is oriented control
System includes: regulate between the first phase magnet group and the second phase magnet group according to positioning requirements
Magnetic force size, in order to push or pull on the transverse arm of described locating rack, control bit drive shaft with
Inclination angle between drill collar.
Above-mentioned first phase magnet group can be electromagnet group, often organizes described electromagnet group at least
Including four blocks of electric magnet；Described second phase magnet group can be permanent magnet group；Based on this,
Regulate between described first phase magnet group and described second phase magnet group according to positioning requirements
Magnetic force size may include that the size of current regulating described electric magnet according to positioning requirements.
Above-mentioned first phase magnet group can be permanent magnet group；Described second phase magnet group can
Think electromagnet group；Based on this, regulate the first phase magnet group and second according to positioning requirements
Magnetic force size between phase magnet group includes: regulate the electricity of described electric magnet according to positioning requirements
Stream size.
The guidance method of the rotary steerable drilling system that the embodiment of the present invention provides, by band
The magnetic force having the oriented control module of electromagnetic guiding structure carries out location control to bit drive shaft
System, system structure is simple, it is easy to guides and controls.
Accompanying drawing explanation
Fig. 1 is the front view of the rotary steerable drilling system being furnished with traditional drill rod telemetry system；
Fig. 2 is the front view of the rotary steerable drilling system that the embodiment of the present invention provides；
Fig. 3 is the orientation control of rotary steerable drilling system in Fig. 2 that the embodiment of the present invention provides
The concrete structure schematic diagram of molding block；
Fig. 4 A is AA ' first group of electric magnet along the line in Fig. 3 that the embodiment of the present invention provides
Profile；
Fig. 4 B is BB ' second group of electric magnet along the line in Fig. 3 that the embodiment of the present invention provides
Profile；
Fig. 5 A is the location coupled with bit drive shaft in Fig. 3 that the embodiment of the present invention provides
The upward view of frame；
Fig. 5 B is that locating rack, bit drive shaft and permanent magnet that the embodiment of the present invention provides are another
The upward view of one layout；
Fig. 6 is permanent magnet and the magnetic picture interaction of electric magnet of embodiment of the present invention offer
Schematic diagram；
Fig. 7 is the signal of the rotary steerable drilling system working mechanism that the embodiment of the present invention provides
Figure；
Fig. 8 is another portion of the oriented control module shown in Fig. 2 that the embodiment of the present invention provides
Management side formula schematic diagram；
Fig. 9 is the profile of AA ' permanent magnet along the line in Fig. 8 that the embodiment of the present invention provides；
Figure 10 A is the electricity being coupled on bit drive shaft in Fig. 8 that the embodiment of the present invention provides
Group of magnets and the upward view of locating rack；
Figure 10 B is locating rack, electromagnet group and the bit drive shaft that the embodiment of the present invention provides
Another deployment way schematic diagram.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing and the present invention is done further retouch in detail
State.
The master of the rotary steerable drilling system that the embodiment of the present invention as shown in Figure 2 provides regards
Figure, this rotary steerable drilling system 200 includes: drill collar 202, bit drive shaft 212, mud
Slurry pipe 210, mud tube adapter 208, universal joint 207, mud sealing device 204 and 214
And drill bit 216；And the oriented control module 206 being connected with the inwall of drill collar 202；
This bit drive shaft 212 is mechanically coupled to by universal joint 207 and oriented control module 206
In drill collar 202, bit drive shaft 212 can rotate around universal joint 207；Oriented control mould
Block 206 is electromagnetic guiding structure.Guidance method based on this system includes: led by electromagnetism
Magnetic force in structure is oriented control to bit drive shaft 212.
Use universal joint 207 and oriented control module 206, can be bit drive shaft 212
It is mechanical coupling in drill collar 202.Bit drive shaft 212 can rotate around universal joint 207,
Thus universal joint 207 is equivalent to a central point.Whole drill string and the weight of drill collar 202
All pass through universal joint 207 to be applied on drill bit 216.The torque of drill collar 202 can also be passed through
Universal joint 207 is sent on drill bit 216.Position and the deflection of bit drive shaft 212 can
To be controlled by oriented control module 206.
The guidance method of the rotary steerable drilling system that the embodiment of the present invention provides, by band
The magnetic force having the oriented control module of electromagnetic guiding structure carries out location control to bit drive shaft
System, system structure is simple, it is easy to guides and controls.
Seeing Fig. 3, oriented control module 206 includes: pair of guide rails 302 and locating rack 314
(also having locating rack 314 on the left of Fig. 3, in order to clear, do not illustrate)；Wherein, every pair of guide rail
302 are oppositely arranged by the guide rail about 302 that two cross sections 304 are " L " shape and to constitute, often
The side of individual guide rail 302 is fixed on the inwall of drill collar 202；
Locating rack 314 is made up of a transverse arm and a vertical arm, and its cross section is "T"-shaped；
Wherein, vertical arm is parallel with the inwall 316 of drill collar 202, and transverse arm is positioned at the guide rail being oppositely arranged
The middle part of 302, the two ends of vertical arm are provided with the support wheel 308 coupled with guide rail 302；
The opposite face of the guide rail 302 being oppositely arranged up and down is respectively arranged with the first phase magnet
First group of electric magnet 310 in group, such as Fig. 3 and second group of electric magnet 318, transverse arm pair
The position answering the first phase magnet group is provided with the second phase magnet group, such as in Fig. 3 forever
Group of magnets 312；
Concrete structure based on the oriented control module 206 shown in Fig. 3, above by electromagnetism
Magnetic force in guide frame is oriented the step of control and can wrap bit drive shaft 212
Include: regulate the magnetic force between the first phase magnet group and the second phase magnet group according to positioning requirements
Size, in order to push or pull on the transverse arm of described locating rack, controls bit drive shaft and drill collar
Between inclination angle.
Further, the first phase magnet group and the second phase magnet are regulated according to positioning requirements
The step of the magnetic force size between group may include that the electric current according to positioning requirements regulating magnet
Size, and then have adjusted the magnetic force size between the first phase magnet group and the second phase magnet group.
The transverse arm of locating rack 314 is provided with coupling pipe 306 away from vertical arm one end, couples pipe 306
It is connected with bit drive shaft 212.In some scheme, guide rail 302 can use high permeability
Metal manufactures, to strengthen magnetic flux.
In some scheme, first group of electric magnet 310 and second group of electric magnet 318 can be used
Coil replaces.
Locating rack 314 can control bit drive shaft 212 and drill bit 216 by following method
Orientation: 1) draw/push away bit drive shaft 212 to make it be inclined to the drill collar of band universal joint 207 202
Side；2) transverse arm of push/pull locating rack 314, in order to determine bit drive shaft 212 with
Inclination angle between drill collar 202；3) vertical arm rotates along guide rail 302.Locating rack 314 can lead to
Cross between first group of electric magnet 310 and second group of electric magnet 318 and permanent magnet group 312
Interact and drive.
As it is shown on figure 3, the first phase magnet group is electromagnet group, often group electromagnet group is permissible
At least include four blocks of electric magnet；Second phase magnet group is permanent magnet group.Permanent magnet group and electricity
Group of magnets radially aligned.
Above-mentioned permanent magnet group is fixed by the permanent magnet bracket being arranged on transverse arm, and permanent magnet props up
Frame is nonmagnetic material.
Fig. 4 A is the profile of AA ' first group of electric magnet 310 along the line in Fig. 3.First group
Electric magnet 310 can include electric magnet 402,406,410,414,418,422,426,
430,434,438,442,446,450,454,458,462,466 and 470.Excellent
Select and first group of electric magnet 310 at least includes four blocks of electric magnet.
Fig. 4 B is the profile of BB ' second group of electric magnet 318 along the line in Fig. 3.Second group
Electric magnet 318 can include electric magnet 404,408,412,416,420,424,428,
432,436,440,444,448,452,456,460,464,468 and 472.Excellent
Select and second group of electric magnet 318 at least includes four blocks of electric magnet.
In some scheme, first group of electric magnet 310 and the electromagnetism of second group of electric magnet 318
Ferrum quantity can be identical, can be from radially calibrating with azimuth direction.
When implementing, above-mentioned electric magnet and the quantity of permanent magnet and type are not fixed.
Fig. 5 A is the upward view of the locating rack 314 coupled with bit drive shaft 212 in Fig. 3.
One end of locating rack 314 can be connected on bit drive shaft 212 by coupling pipe 306,
The other end then can be coupled to guide rail 302 (not showing in Fig. 5 A) by supporting wheel 308
On.Use a set of bearing 504 coupling pipe 306 can be connected on bit drive shaft 212.
Locating rack 314 and coupling pipe 306 can form a firm entity, and along guide rail 302
Rotate.
In some scheme, the permanent magnet group 312 in Fig. 3 can use permanent magnet bracket 502
Fix.It is fabricated by with nonmagnetic metal, may be mounted on locating rack 314.Have
Permanent magnet bracket 502, locating rack 314 just can accommodate more permanent magnet, such as,
Permanent magnet 506,508 and 510 in Fig. 5 A.
In some scheme, permanent magnet group 312 can be with first group of electric magnet 310 and second
Group electric magnet 318 radially aligned, thus produce bigger magnetic force.
In operation, permanent magnet group 312 is with first group of electric magnet 310 and second group of electric magnet 318
Between produce magnetic force be sufficient to allow locating rack 314 rotate along guide rail 302.During drilling well,
The direction of rotation of locating rack 314 is contrary with the direction of rotation of drill collar 202 and drill bit 216, but
It is that speed between the two is identical.
According to some schemes of the present invention, Fig. 5 B is locating rack, bit drive shaft and permanent magnetism
The bottom view of another layout of ferrum.Multiple locating racks 513, support wheel 518, permanent magnet bracket
511 and permanent magnet 516,514 and 512 be alternatively coupled on bit drive shaft 212, with
This increases driving force.
In some scheme, the shape and size of permanent magnet 512,514 and 516 can be with
Permanent magnet 506,508 is identical with 510.
According to some schemes of the present invention, Fig. 6 is the magnetic picture of permanent magnet and electric magnet
The schematic diagram of interaction.For ease of explain, Fig. 6 only show six blocks of electric magnet 418,
420,422,424,426 and 428 and two block permanent magnets 508 and 510.Permanent magnet 508
Can upwardly-directed 620 and be magnetized on direction 622 down respectively with 510.According to electricity
Magnetic rule, homopolar-repulsion, heteropole is attracting.In order to permanent magnet 508 and 510 is moved to orientation
The left side of 614, can activate electric magnet 426 and 428, thus produce magnetic flux upwards respectively
Amount 616 and 618.It follows that permanent magnet 510 will be produced by electric magnet 426 and 428
Corresponding pulling force 602 and pulling force 604, thus pull permanent magnet 510 toward moving left.In like manner,
Electric magnet 418 and 420 can be activated, thus downward magnetic flux 624 will be produced respectively
With 626.Then, electric magnet 418 and 420 will produce corresponding thrust 606 and thrust
608, thus promote permanent magnet 510 toward moving left, and produce corresponding pulling force 610 and draw
Power 612, pulls permanent magnet 508 to be moved to the left.In this stage, electric magnet 422 and 424
It is in idle state, is positioned at the centre of permanent magnet 510, will not apply to permanent magnet 510
Pulling force or push away.
When the control polarity of voltage being applied on electric magnet 418,420,426 and 428 is contrary
Time, permanent magnet 508 and 510 just can be toward moving right.
In some scheme, Hall element (as shown in Figure 6) can be connected to electromagnetism and lead
In system (being equivalent to above-mentioned oriented control module 206), in order to accurately measure permanent magnet
And the relative position between electric magnet.Like this, when rotary steerable drilling system runs,
Just can accurately calculate magnitude of voltage, apply to the most again on electric magnet.
According to some schemes of the present invention, Tu7Shi rotary steerable drilling system working mechanism
Schematic diagram.As it was previously stated, locating rack 314 can control drill bit by following several ways
Drive shaft 212 and the orientation of drill bit 216: 1) draw/push away bit drive shaft 212 to make it incline
To drill collar 202 side 708 of band universal joint 207；2) push/pull transverse arm, in order to determine drill bit
Inclination angle between drive shaft 212 and drill collar 202；3) locating rack 314 is controlled along guide rail 302
Rotate.Locating rack 314 can pass through first group of electric magnet 310 and second group of electric magnet 318
And the interaction produced between permanent magnet group 312 drives.Such as, when locating rack 314
When being positioned at the orientation of negative y-axis, drill bit 216 will move towards the direction of positive y-axle.For another example
Saying, when drilling direction is towards positive x-axis, locating rack 314 will be maintained at the side of negative x-axle
To.
During drilling well, if drill collar 202 and drill bit 216 constantly rotate along direction 702, and
And locating rack 314 is positioned at and the fixed position of drill collar 202, then drill bit 216 will be at z-
Swing on axle, and the hole come outbreak out is the most relatively large.To bore in a predetermined direction
Well, it is necessary to carry out drill bit 216 synchronizing location.Such as, when drill collar 202 and drill bit
216 when rotating along direction 702, and drill bit 216 can constantly point to the direction of positive y-axle.In order to
Allowing bit drive shaft 212 and drill bit 216 keep stable with stratum, locating rack 314 will be along side
Rotate to 704,706, and this position be by chance positioned at the opposite in bit direction 702,
And drill collar 202 is identical with the speed of drill bit 216.This include permanent magnet and electric magnet
Electromagnetism guidance system can control the position of locating rack 314 and turn to, and finally control to bore
The position of drilling in hole.
According to some schemes of the present invention, above-mentioned first phase magnet group can also be permanent magnet
Group；Second phase magnet group is electromagnet group.Fig. 8 is the oriented control module shown in Fig. 2
Another deployment way schematic diagram of 206, its difference is the position by permanent magnet and electric magnet
Exchange.Such as: permanent magnet group 802 and 804 is arranged on guide rail 302, at locating rack
Electromagnet group 806 is installed on 314.
According to some schemes of the present invention, Fig. 9 is the section of AA ' permanent magnet along the line in Fig. 8
Figure.Permanent magnet group 802 can include permanent magnet 902,904,906 and 908.The most forever
Group of magnets 802 at least two permanent magnets.
In some scheme, permanent magnet polarity can change with guide rail 302.Such as, when
The arctic of permanent magnet 902 and 906 is upward, then the arctic of permanent magnet 904 and 908 will
Down, electromagnetism operation is driven with this.
In some scheme, the deployment of permanent magnet group 804 can be with the portion of permanent magnet group 802
Affix one's name to just the same.
According to some schemes of the present invention, Figure 10 A is to be coupled to bit drive shaft 212 in Fig. 8
On electromagnet group 806 and the upward view of locating rack 314.Electromagnet group 806 in Fig. 8
Can support with an electromagnetism support 1000.It is fabricated by with nonmagnetic metal, permissible
It is arranged on locating rack 314.Having had electromagnetism support 1000, locating rack 314 just can be simultaneously
Accommodate more electric magnet, electric magnet in such as Figure 10 A 1002,1004,1006,1008,
1010 and 1012.
According to some schemes of the present invention, Figure 10 B is that locating rack, electromagnet group and drill bit drive
Another deployment way schematic diagram of moving axis.Multiple locating racks 513, support wheel 518, electromagnetism prop up
Frame 1014 and electric magnet 1016,1018,1020,1022,1024 and 1026 also may be used
To be coupled on bit drive shaft 212, thus increase driving force.
In some scheme, above-mentioned oriented control module 206 can also arrange attachment means,
Such as slip ring (not shown), in order to the power of locating rack 314 is transferred to electromagnet group
On 806.
In some scheme, multiple electric magnet 1016,1018,1020,1022,1024
With 1026 shape and size can be with electric magnet 1002,1004,1006,1008,1010
Identical with the shape and size of 1012.
Above-mentioned bit drive shaft 212 be provided with multiple oriented control module in the radial direction
206。
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention,
For a person skilled in the art, the present invention can have various modifications and variations.All
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made,
Should be included within the scope of the present invention.
Claims (3)
1. a guidance method for rotary steerable drilling system, this system includes: drill collar (202), brill
Head drive shaft (212), mud tube (210), mud tube adapter (208), universal joint (207),
Mud sealing device (204) and drill bit (216)；It is characterized in that, this system also includes: with brill
The oriented control module (206) that quickly inwall of (202) is connected；Bit drive shaft (212) passes through
Universal joint (207) and oriented control module (206) are mechanically coupled in drill collar (202), drill bit
Drive shaft (212) can rotate around universal joint (207)；Oriented control module (206) is electromagnetism
Guide frame；
Wherein, oriented control module (206) including: pair of guide rails (302) and locating rack (314)；
Wherein, the every pair of guide rail (302) is the most relative by the guide rail (302) that two cross sections are " L " shape
Arranging composition, the side of each guide rail (302) is fixed on the inwall of drill collar (202)；
Locating rack (314) is made up of a transverse arm and a vertical arm, and its cross section is "T"-shaped；Wherein,
Described vertical arm is parallel with the inwall of drill collar (202), and described transverse arm is positioned at the guide rail (302) being oppositely arranged
Middle part, the two ends of described vertical arm be provided with couple with guide rail (302) support wheel；
The opposite face of the guide rail (302) being oppositely arranged up and down is respectively arranged with the first phase magnet group, described
The position of the corresponding described first phase magnet group of transverse arm is provided with the second phase magnet group；
The transverse arm of locating rack (314) is provided with coupling pipe (306), coupling pipe (306) away from described vertical arm one end
It is connected with bit drive shaft (212)；
Described method includes: regulate described first phase magnet group and described second location magnetic according to positioning requirements
Magnetic force size between ferrum group, in order to push or pull on the transverse arm of described locating rack, controls bit drive shaft
And the inclination angle between drill collar.
Method the most according to claim 1, it is characterised in that described first phase magnet group is electricity
Group of magnets, often organizes described electromagnet group and at least includes four blocks of electric magnet；Described second phase magnet group is
Permanent magnet group；
Described according between the positioning requirements described first phase magnet group of regulation and described second phase magnet group
Magnetic force size includes: regulate the size of current of described electric magnet according to positioning requirements.
Method the most according to claim 1, it is characterised in that described first phase magnet group is forever
Group of magnets；Described second phase magnet group is electromagnet group；
Described according between the positioning requirements described first phase magnet group of regulation and described second phase magnet group
Magnetic force size includes: regulate the size of current of described electric magnet according to positioning requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429499.8A CN104196452B (en) | 2014-08-27 | The guidance method of rotary steerable drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429499.8A CN104196452B (en) | 2014-08-27 | The guidance method of rotary steerable drilling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104196452A CN104196452A (en) | 2014-12-10 |
| CN104196452B true CN104196452B (en) | 2017-01-04 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113953A (en) * | 1988-11-03 | 1992-05-19 | Noble James B | Directional drilling apparatus and method |
| CN2264801Y (en) * | 1996-05-13 | 1997-10-15 | 辽河石油勘探局钻井二公司 | Borehole path controller |
| CN1299915A (en) * | 1998-02-05 | 2001-06-20 | 施卢默格控股有限公司 | Automatically controlled rotation-controllable drilling system and drilling method |
| CN1332308A (en) * | 2000-06-22 | 2002-01-23 | 石油勘探开发科学研究院钻井工艺研究所 | Remote controlled wall bent housing angle changing method and device and the application |
| CN201874460U (en) * | 2010-12-07 | 2011-06-22 | 中国石油集团西部钻探工程有限公司 | One-trip drilling tool for directional well |
| CN103163823A (en) * | 2011-12-08 | 2013-06-19 | 沈阳工业大学 | Control method of synchronous stable suspension of a plurality of maglev systems for numerically-controlled machine tools |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113953A (en) * | 1988-11-03 | 1992-05-19 | Noble James B | Directional drilling apparatus and method |
| CN2264801Y (en) * | 1996-05-13 | 1997-10-15 | 辽河石油勘探局钻井二公司 | Borehole path controller |
| CN1299915A (en) * | 1998-02-05 | 2001-06-20 | 施卢默格控股有限公司 | Automatically controlled rotation-controllable drilling system and drilling method |
| CN1332308A (en) * | 2000-06-22 | 2002-01-23 | 石油勘探开发科学研究院钻井工艺研究所 | Remote controlled wall bent housing angle changing method and device and the application |
| CN201874460U (en) * | 2010-12-07 | 2011-06-22 | 中国石油集团西部钻探工程有限公司 | One-trip drilling tool for directional well |
| CN103163823A (en) * | 2011-12-08 | 2013-06-19 | 沈阳工业大学 | Control method of synchronous stable suspension of a plurality of maglev systems for numerically-controlled machine tools |
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Effective date of registration: 20210114 Address after: 100120 No.6 liupukang, Xicheng District, Beijing Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 100101 No.101, Anli Road, Chaoyang District, Beijing Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |