CN102865038A - Offset guide mechanism design method of dynamic directional type rotary steering well drilling tool - Google Patents
Offset guide mechanism design method of dynamic directional type rotary steering well drilling tool Download PDFInfo
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Abstract
An offset guide mechanism design method of a dynamic directional type rotary steering well drilling tool comprises a rotary outer barrel, a stabilizing platform, an offset guide mechanism, upper and lower support plates, a drill spindle, a drill bit, a conductive slip ring and a connection bearing. The device can achieve precise control of a structure corner, particularly a hole deviation angle and an azimuth angle in a well drilling process by keeping the stabilizing platform relatively still to the ground, and adjusting opposite positions of inner and outer eccentric rings and the opposite positions of the offset guide mechanism and a stabilizing platform body. The offset guide mechanism design method is reasonable and compact in structure design, and is an effective offset guide mechanism design method of the dynamic directional type rotary steering well drilling tool.
Description
Technical field
The present invention relates to a kind of biasing guiding mechanism that includes but not limited to the dynamic guiding type rotary steering drilling tool, particularly described drilling tool in petroleum gas field.
Background technology
Down-hole rotary steering drilling tool system is divided into pushing type and directional type according to its guidance mode, working method according to biasing mechanism can be divided into again quiescent biasing formula and dynamic bias formula, from applicable cases, the deflecting ability of directional type rotary steerable drilling system does not rely on and the contacting of the borehole wall, be more applicable for large hole diameter or out-of-round oversized hole, soft formation, the unsettled sidetracking of bore hole of dead-soft bottom and interlayer etc., so that creep into the dog-leg degree and the lateral drilling deflecting ability greatly improves, help well is controlled at the optimum position of oil reservoir, improve wellbore quality, guarantee downhole safety.And wherein dynamic directional type rotary steerable drilling system rotates fully owing to its drilling assembly especially, it is smooth, regular to get out well, but and the Effective Raise rate of penetration, increase moment of torsion, regulate the pressure of the drill, give full play to bit performance, be subject to the welcome of many oilfield drillings company in the world wide.
Can say that dynamically the guiding type rotary steering drilling tool system is the acme of world today's drilling technology development, represent the developing direction of high-precision directional drill well technology.Technically, dynamically the directional type rotary steerable drilling system is one and integrates closed loop automatic control system mechanical, electrical, liquid, and its deflecting ability does not rely on and the contacting of the borehole wall, and rotates to be technical characteristics fully with all parts of down-hole.
The world-renowned petroleum technology Baker Hughes of service company, Schlumberger, Halliburton etc. have developed rotary steering drilling tool system separately.The units such as domestic Xi'an Petroleum University, Shengli Oil Field drilling well institute, CNOOC Research Center, China University of Geosciences, Southwest Petrol University, Liaohe Oil Field providence petroleum equipment company have also carried out the rotary steerable drilling technical research, have obtained successively certain achievement in research.Generally, rotary steering closed loop drilling technology still is in the fast-developing stage, and international competition is very fierce.Chinese patent notification number CN 101586440A, open day on November 25th, 2009, the name of innovation and creation is called a kind of guiding type rotary steering drilling tool, and (this patent application also is the utility model patent mandate, notice of authorization number: CN 201450731U, May 12 2010 notice of authorization day), this application case discloses a kind of mechanics of surface characteristic that does not rely on the stratum, simple in structure, and can accurate and effective the guiding type rotary steering drilling tool system of control well track, it is quiescent biasing guiding type rotary steering drilling tool system in this system nature, urceolus did not rotate when its weak point was 1. described drilling tool work, and its action torque is less; 2. the guiding of described drilling tool realizes that by mandrel is crooked this guiding mandrel needs the alternating stresses of bearing high strength, and fatigue damage occurs easily.
U.S. Patent number 6,109,372, March 15 1999 applying date, authorize day on August 29th, 2000, the name of innovation and creation is called the rotary steering drilling tool system (Rotary Steerable Well Drilling System Utilizing Hydraulic Servo-loop) of servo apply hydraulic pressure circuit controls, this case discloses a kind of based on dynamic directional type rotary steerable tool, its urceolus directly drives biasing mechanism and then drives bit, the relative position of biasing mechanism and urceolus when controlling work by the uninterrupted motion of two groups of hydraulic drive piston of X-Y direction, to reach the purpose of sensing, its characteristics are at any time known accurately urceolus rotary speed, and the run location of two groups of hydraulic drive piston of servo-actuated control X-Y direction, the in addition high load capacity work of itself of simultaneous control of hydraulic drive piston displacement and urceolus rotating speed can increase the difficulty of accurate sensing control undoubtedly.
U.S. Patent number 6,092,610, February 5 1998 applying date, authorize day on July 25th, 2000, the name of innovation and creation is called the rotary steering drilling tool System and method for (Actively Controlled Rotary Steerable System and Method forDrilling Wells) of ACTIVE CONTROL, this case discloses a kind of dynamic guiding type rotary steering drilling tool system, its urceolus drives auger spindle and then drives bit, produce larger rotation torque, this case has proposed a kind of directional type guiding mechanism based on eccentric shaft simultaneously, its structure bent angle can change between the design maximum angle at 0 °, static by guaranteeing eccentric shaft geography, can constant structure bent angle value.Its characteristics are, when needing to adjust the azimuth when not adjusting the structure bent angle, to at first destroy the geographical inactive state of eccentric shaft, when treating that eccentric shaft turns to required orientation, make again its constant speed traceback urceolus rotating speed, this case is failed to know and is at length illustrated the eccentric hoop type of drive simultaneously, can't learn the eccentric stiffener details.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of biasing guiding mechanism method for designing of the dynamic guiding type rotary steering drilling tool based on two eccentric hoop motion principles, can realize structure bent angle, particularly hole angle and azimuthal accurate control in the drilling process.Reasonable in design of the present invention is compact, the biasing guiding mechanism method for designing of a kind of effectively dynamic guiding type rotary steering drilling tool of can yet be regarded as.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Dynamic guiding type rotary steering drilling tool biasing guiding mechanism, be the important component part of dynamic guiding type rotary steering drilling tool, comprise rotation urceolus, stabilized platform, guide offset mechanism, upper and lower support plate, auger spindle, drill bit, conducting slip ring and connection bearing.
The rotation urceolus is the thicker hollow ring body of a wall thickness, is driven by drilling rod and MTR the two or one, is used for applying larger the pressure of the drill and moment of torsion to drilling tool.
Stabilized platform places the rotation urceolus inner, comprise hollow cylindrical body, connection bearing, servomotor and supporting shaft coupling, the stabilized platform agent structure develops from the up-small and down-big Rotary-table of diameter, the upper end is stretched out longer, be connected and fixed by the lower supporting plate that is installed in the rotation urceolus and embedding bearing wherein, the lower end is the thinner hollow type cylinder of wall thickness, the connection bearing outside closely cooperates with the rotation outer tube inner wall, inboard stable connection main platform body, servomotor is installed on the upper backup pad of rotation urceolus, shaft coupling is used for connecting servomotor and stabilized platform main body, according to rotation urceolus rotation situation, the despining of driven by servomotor stabilized platform main body constant speed phase, lower maintenance is static over the ground in working order to make it.
Guide offset mechanism is positioned at the stabilized platform body interior, realize that by connection bearing the location rotates freely with relative, it comprises interior eccentric hoop and outer eccentric hoop and supporting driving servomotor and shaft coupling, interior eccentric hoop places among the outer eccentric hoop, its close contact cooperates to be realized by connection bearing with the relative connection status that rotates freely, eccentric ducted body central axis and eccentric hoop body central axis in two eccentric hoops are angled, and this angle has determined the maximum possible structure bent angle value that guide offset mechanism can lead.
The impact of rotation status caused power supply and control signal on the servomotor when dynamically the conducting slip ring in the guiding type rotary steering drilling tool can not be subjected to each component work.
Compact conformation of the present invention, reasonable in design, easy to adjust, by its rotary drilling mode of dynamically pointing to, can the drilling process of horizontal well, extended reach well, high angle hole and Multilateral Wells etc. effectively be led, and can increase moment of torsion, adjusting the pressure of the drill, improve rate of penetration, give full play to bit performance, and then improve drilling efficiency.
Description of drawings
Below in conjunction with accompanying drawing specific embodiments of the invention are described in further detail.
Fig. 1 embodiment of the invention generalized section;
Inside and outside eccentric hoop position view when Fig. 2 embodiment of the invention structure bent angle is maximum;
Inside and outside eccentric hoop position view when Fig. 3 embodiment of the invention structure bent angle is zero;
Fig. 4 embodiment of the invention structure bent angle and interior eccentric hoop calculate schematic diagram with respect to the anglec of rotation mathematical relationship of outer eccentric hoop;
The 1-drill bit, the 2-auger spindle, 3-rotates urceolus, the outer eccentric hoop of 4-, 5-stabilized platform connection bearing, 6-outer eccentric hoop connection bearing, the outer eccentric hoop conducting slip ring of 7-, 8-stabilized platform main body, 9-stabilized platform conducting slip ring, the 10-lower supporting plate, 11-stabilized platform servomotor, 12-upper end conducting slip ring, 13-upper backup pad, 14-stabilized platform servomotor shaft coupling, the embedded bearing of 15-lower supporting plate, the outer eccentric hoop servomotor of 16-, the outer eccentric hoop servomotor shaft coupling of 17-, eccentric hoop servomotor in the 18-, eccentric hoop connection bearing in the eccentric hoop in the eccentric hoop servomotor shaft coupling in the 19-, 20-, 21-, 22-auger spindle connection bearing, the 23-seal bellows;
The intersection point of eccentric hoop central axis C and interior eccentric hoop central axis C in the intersection point of the hollow hole axis B of eccentric hoop and outer (interior) eccentric hoop lower surface D, the F-in the intersection point of eccentric hoop central axis in the hollow hole axis of eccentric hoop, the C-in the outer eccentric hoop central axis of A-, the B-, outer (interior) eccentric hoop lower surface of D-, the outer eccentric hoop central axis A of E-and outer (interior) eccentric hoop lower surface D, the G-, the common intersection point of the hollow hole axis B of eccentric hoop central axis A and interior eccentric hoop and interior eccentric hoop central axis C outside the O-.
α-structure bent angle, β-Nei eccentric hoop with respect to the anglec of rotation of outer eccentric hoop be, θ-outer eccentric hoop central axis A and the angle of interior eccentric hoop central axis C, the hollow hole axis B of φ-Nei eccentric hoop and the angle of interior eccentric hoop central axis C.
The specific embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
The embodiment of the invention provide a kind of for but be not limited to the dynamic guiding type rotary steering drilling tool in down-hole of natural petroleum gas field, a kind of biasing guiding mechanism based on stabilized platform and inside and outside pair of eccentric hoop particularly is provided.The guidance mode of this instrument is directional type, and the working method of guide offset mechanism is the dynamic bias formula.The rotation urceolus links to each other with drill string or drilling rod system in the embodiment of the invention, and drill bit links to each other with auger spindle; Inside and outside two eccentric hoop biasing guiding mechanism places the stabilized platform body interior, makes itself and rotation urceolus speed of rotation equal and opposite in direction by motor-driven, and opposite direction keeps geographical inactive state; In drilling process, the rotation urceolus rotates all the time, and moment of torsion and the pressure of the drill are passed to drill bit efficiently; By adjusting interior eccentric hoop with the relatively rotation place of outer eccentric hoop, can realize that auger spindle center line and urceolus center line form the structure bent angle and change from 0 ° to arranging max architecture bent angle value; By adjusting the biasing guiding mechanism with the relatively rotation place of stabilized platform main body, can make the auger spindle center line point to any control azimuth in the 360 ° of scopes in the four corners of the world.
Fig. 1 is embodiment of the invention generalized section.This dynamic guiding type rotary steering drilling tool biasing guiding mechanism comprises rotation urceolus 3, stabilized platform, guide offset mechanism, upper backup pad 13, lower supporting plate 10, auger spindle 2, drill bit 1, conducting slip ring and connection bearing.
Specifically, stabilized platform places rotation urceolus 3 inside, comprise hollow cylindrical stabilized platform main body 8, stabilized platform connection bearing 5, stabilized platform servomotor 11 and supporting stabilized platform servomotor shaft coupling 14, stabilized platform main body 8 upper ends are connected and fixed by the lower supporting plate 10 and the embedded bearing 15 of lower supporting plate that are installed in rotation urceolus 3, the lower end closely cooperates by stabilized platform connection bearing 5 and rotation urceolus 3 inwalls, stabilized platform servomotor 11 is installed in upper backup pad 13 lower surfaces of rotation urceolus 3, upper backup pad 13 is rotating on the urceolus 3 by interior hexagonal screw threads for fastening with lower supporting plate 10, and thereupon together motion; Stabilized platform servomotor shaft coupling 14 is used for the stable connection platform and drives servomotor 11 and stabilized platform main body 8, stabilized platform servomotor 11 drives stabilized platform main body 8 with respect to the 3 constant speed phase despinings of rotation urceolus, and lower maintenance is static over the ground in working order to make it.
Guide offset mechanism is positioned at stabilized platform main body 8 inside, realize that by outer eccentric hoop connection bearing 6 location rotates freely with relative, it comprises interior eccentric hoop 20 and outer eccentric hoop 4 and supporting outer eccentric hoop servomotor 16 thereof, outer eccentric hoop servomotor shaft coupling 17, interior eccentric hoop servomotor 18, interior eccentric hoop servomotor shaft coupling 19 and interior eccentric hoop connection bearing 21, outer eccentric hoop servomotor 16 is used for the outer eccentric hoop 4 of rotary actuation, the two realizes connecting by outer eccentric hoop servomotor shaft coupling 17, interior eccentric hoop servomotor 18 is used for eccentric hoop 20 in the rotary actuation, the two realizes connecting by interior eccentric hoop servomotor shaft coupling 19, interior eccentric hoop 20 is together with interior eccentric hoop servomotor 18, interior eccentric hoop servomotor shaft coupling 19 places outer eccentric hoop 4 inside, and its close contact cooperates with the relative connection status that rotates freely to be realized by interior eccentric hoop connection bearing 21.The vacancy embeds in the interior eccentric hoop 20 auger spindle connection bearing 22, and inner ring places end joint on the auger spindle 2, and described auger spindle connection bearing 22 is used for guiding auger spindle 2 structure bent angle and azimuths, and realizes the independent rotation of auger spindle 2 and interior eccentric hoop 20.
Fig. 2, Fig. 3 have described the guide offset mechanism guiding principle of the embodiment of the invention.Outer eccentric hoop 4 central axis A are parallel with former well track axis, and auger spindle 3 upper ends are arranged in the hollow hole of eccentric hoop 20, and this axially bored line B and A form an angle, i.e. structure bent angle α.When inside and outside eccentric hoop has relative circular motion, structure bent angle α will change between 0 ° and the max architecture bent angle value that designed continuously; If when rotating together under inside and outside eccentric hoop is keeping relatively static state, this structure bent angle can point to arbitrary orientation.
It needs to be noted, outer eccentric hoop 4 hollow hole central axis and central axis A not only have a design offset distance at soffit, and there is an angle, interior eccentric hoop hollow hole central axis B and interior eccentric hoop central axis C have same design offset distance value at soffit, and this two central axis has same design angle value, and 2 times of values of this design angle value are max architecture bent angle value.
Inside and outside eccentric hoop position view when Fig. 2 has further described embodiment of the invention structure bent angle maximum.Among the figure, outer eccentric hoop central axis A meets at an E with outer (interior) eccentric hoop lower surface D, the hollow hole axis B of interior eccentric hoop and outer (interior) eccentric hoop lower surface D meet at a G, interior eccentric hoop central axis C meets at a F with outer (interior) eccentric hoop lower surface D, the hollow hole axis B of outer eccentric hoop central axis A and interior eccentric hoop and interior eccentric hoop central axis C intersect at an O jointly, outer eccentric hoop central axis A, the hollow hole axis B of interior eccentric hoop and interior eccentric hoop central axis C are positioned at same plane, intersection point E and intersection point G are the longest apart from EG, double the outside design offset E F of D lower surface, (interior) eccentric hoop lower surface of outer eccentric hoop 4 hollow hole central axis and central axis A, also namely double the outside design offset distance FG of D lower surface, (interior) eccentric hoop lower surface of interior eccentric hoop hollow hole central axis B and interior eccentric hoop central axis C; Structure bent angle α is angle theta and the hollow hole axis B of interior eccentric hoop and the included angle sum of interior eccentric hoop central axis C of outer eccentric hoop central axis A and interior eccentric hoop central axis C, because it is identical that this two angle requires when design, so structure bent angle α doubles θ or φ.
Inside and outside eccentric hoop position view when Fig. 3 has further described embodiment of the invention structure bent angle and is zero.At this moment, interior eccentric hoop 20 with respect to the angular displacement of outer eccentric hoop 4 in Fig. 3 clockwise or be rotated counterclockwise 180 °.Among the figure, outer eccentric hoop central axis A overlaps with the hollow hole axis B of interior eccentric hoop, give an E or G with outer (interior) eccentric hoop lower surface D, interior eccentric hoop central axis C meets at a F with outer (interior) eccentric hoop lower surface D, the hollow hole axis B of outer eccentric hoop central axis A and interior eccentric hoop and interior eccentric hoop central axis C intersect at an O jointly, the hollow hole axis B of outer eccentric hoop central axis A, interior eccentric hoop and interior eccentric hoop central axis C are positioned at same plane, and intersection point E and intersection point G are the shortest apart from EG to be zero; Structure bent angle α also is zero.
Fig. 4 has further described from the general extent embodiment of the invention structure bent angle and interior eccentric hoop calculates schematic diagram with respect to the anglec of rotation mathematical relationship of outer eccentric hoop; Figure China and foreign countries eccentric hoop central axis A meets at an E with outer (interior) eccentric hoop lower surface D, the hollow hole axis B of interior eccentric hoop and outer (interior) eccentric hoop lower surface D meet at a G, interior eccentric hoop central axis C meets at a F with outer (interior) eccentric hoop lower surface D, the hollow hole axis B of outer eccentric hoop central axis A and interior eccentric hoop and interior eccentric hoop central axis C intersect at an O jointly, outer eccentric hoop 4 hollow hole central axis and central axis A be the design offset E F of D lower surface, (interior) eccentric hoop lower surface outside, interior eccentric hoop hollow hole central axis B and interior eccentric hoop central axis C be the design offset distance FG of D lower surface, (interior) eccentric hoop lower surface outside, the angle theta of outer eccentric hoop central axis A and interior eccentric hoop central axis C equals the hollow hole axis B of interior eccentric hoop and the included angle of interior eccentric hoop central axis C, structure bent angle α is arranged in addition, interior eccentric hoop is β with respect to the anglec of rotation of outer eccentric hoop.
Further, have,
The embodiment of the invention comprises also that for three guide links that connect each servo motor power supply and control signal wire the outer eccentric hoop conducting slip ring 7 that is used for connecting interior eccentric hoop servomotor 18 power supplys and control signal wire that is installed in outer eccentric hoop 4 upper ends is arranged specifically; Be installed in the stabilized platform conducting slip ring 9 that is used for connecting outer eccentric hoop servomotor 16 and interior eccentric hoop servomotor 18 power supplys and control signal wire of stabilized platform main body 8 upper ends; Be installed in the upper end conducting slip ring 12 that is used for stable connection platform servomotor 11, outer eccentric hoop servomotor 16 and interior eccentric hoop servomotor 18 power supplys and control signal wire of upper backup pad 13 lower surfaces.
Each drives and all adopts hollow shaft type servomotor in the embodiment of the invention, leave hollow gap in the certain limit of this embodiment central axis, there is mud operation passage inside, from drill bit 1, eject after making mud move to drill bit 1 inside, then turn back to ground by the annular space between rotation urceolus 3 and the borehole wall.Especially, the mud sealing with rotation urceolus inside can realize that with seal bellows 23 similarly, seal bellows also can be realized the good mud sealing effectiveness of auger spindle 2 and interior eccentric hoop 20 and auger spindle connection bearing 22 as very important auger spindle 2.
The embodiment of the invention also provides a kind of servo-actuated and stable control method of well track for this dynamic guiding type rotary steering drilling tool biasing guiding mechanism.Calculated hole angle and the azimuth information that to control by computing unit according to presetting the well track parameter, and in conjunction with inside and outside eccentric hoop guide offset mechanical work principle, draw desired structure bent angle value, and then adjust interior eccentric hoop 20 with respect to outer eccentric hoop 4 relative positions and the relatively rotation place of guiding mechanism with respect to stabilized platform main body 8 of setovering.For realizing above-mentioned control, adopt two closed loop Based on Double Fuzzy-PID Controllers, wherein closed loop I realizes that mainly stabilized platform main body 8 follows the reverse constant speed control of rotation urceolus 3, realizes that its geography is static, this is extremely important to accurate sensing control; To rotate urceolus 3 actual speed measurement results and constantly be adjusted into servo-actuated tracking variable, optional sensor with different principle such as electric capacity, photoelectricity, Halls, the positive and negative drilling speed difference of perception rotation urceolus 3 and stabilized platform main body 8 utilizes fuzzy controller a to realize its accurately dynamically servo-actuated reverse constant speed tracking; In the closed loop II, adopt three axis accelerometer, magnetometer etc. can conveniently calculate real well oblique angle and azimuth; Utilize fuzzy controller b realize in the accurate control of eccentric hoop 20 and outer eccentric hoop 4 relative positions and biasing guiding mechanism and stabilized platform main body 8 relative positions, rotate the urceolus rotation speed change hole angle that will control and azimuthal impact can be compensated by the fine setting increment unit that is positioned at behind the closed loop I.
The technical method of the embodiment of the invention and scheme of machine design, can be under the prerequisite that does not affect drillng operation, in conjunction with hole angle and azimuth determination data, when keeping the over the ground inactive state of stabilized platform, realize hole angle and azimuthal accurate control by adjusting inside and outside eccentric hoop relative position and biasing guiding mechanism and stabilized platform main body relative position.
Above embodiment only in order to the technical scheme of the embodiment of the invention to be described, is not intended to limit; Although with reference to previous embodiment the embodiment of the invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the embodiment of the invention.
Claims (10)
1. the biasing guiding mechanism of a dynamic guiding type rotary steering drilling tool, comprise the rotation urceolus, stabilized platform, the biasing guiding mechanism, upper backup pad, lower supporting plate, auger spindle, drill bit, conducting slip ring and connection bearing, it is characterized in that, the rotation urceolus directly applies the pressure of the drill and moment of torsion to drill bit, the rotation urceolus drives auger spindle, drill bit rotates jointly, the biasing guiding mechanism is positioned at the stabilized platform body interior, realize that by outer eccentric hoop connection bearing the location rotates freely with relative, by adjusting the biasing guiding mechanism with the relatively rotation place of stabilized platform main body, can make auger spindle center line any control azimuth in 0 ~ 360 ° of scope.
2. the biasing guiding mechanism of a kind of dynamic guiding type rotary steering drilling tool as claimed in claim 1, it is characterized in that: stabilized platform places the rotation urceolus inner, comprise hollow cylindrical stabilized platform main body, the stabilized platform connection bearing, the stabilized platform servomotor, stabilized platform servomotor shaft coupling, stabilized platform main body upper end is connected and fixed by the lower supporting plate and the embedded bearing of lower supporting plate that are installed in the rotation urceolus, the lower end closely cooperates by stabilized platform connection bearing and rotation outer tube inner wall, the stabilized platform servomotor is installed on the upper backup pad of rotation urceolus, upper backup pad and lower supporting plate are rotating on the urceolus by interior hexagonal screw threads for fastening, and thereupon together motion.
3. the biasing guiding mechanism of a kind of dynamic guiding type rotary steering drilling tool as claimed in claim 2, it is characterized in that: stabilized platform servomotor shaft coupling is used for the stable connection platform and drives servomotor and stabilized platform main body, the driving driven by servomotor stabilized platform main body of stabilized platform is with respect to the despining of rotation urceolus constant speed phase, and lower maintenance is static over the ground in working order to make it.
4. the biasing guiding mechanism of a kind of dynamic guiding type rotary steering drilling tool as claimed in claim 1 is characterized in that: the biasing guiding mechanism comprises interior eccentric hoop and outer eccentric hoop and supporting outer eccentric hoop servomotor, outer eccentric hoop servomotor shaft coupling, interior eccentric hoop servomotor, interior eccentric hoop servomotor shaft coupling and interior eccentric hoop connection bearing.
5. the biasing guiding mechanism of a kind of dynamic guiding type rotary steering drilling tool as claimed in claim 4, it is characterized in that: outer eccentric hoop servomotor is used for the outer eccentric hoop of rotary actuation, the two realizes connecting by outer eccentric hoop servomotor shaft coupling, interior eccentric hoop servomotor is used for eccentric hoop in the rotary actuation, the two realizes connecting by interior eccentric hoop servomotor shaft coupling, interior eccentric hoop is together with interior eccentric hoop servomotor, interior eccentric hoop servomotor shaft coupling places outer eccentric hoop inner, its close contact cooperates with the relative connection status that rotates freely to be realized by interior eccentric hoop connection bearing, the outer eccentric hoop conducting slip ring that is installed in outer eccentric hoop upper end is used for connecting interior eccentric hoop servo motor power supply and control signal wire, and the upper end conducting slip ring that is installed in the upper backup pad upper end is used for stable connection platform servomotor, outer eccentric hoop servomotor and interior eccentric hoop servo motor power supply and control signal wire.
6. the biasing guiding mechanism of a kind of dynamic guiding type rotary steering drilling tool as claimed in claim 5, it is characterized in that: outer eccentric hoop servomotor and interior eccentric hoop servomotor are hollow shaft type motor.
7. such as claim 4, the biasing guiding mechanism of 5 described a kind of dynamic guiding type rotary steering drilling tools is characterized in that: outer eccentric hoop hollow hole central axis and its body central axis have a design offset distance in the lower surface, and have an angle; Interior eccentric hoop hollow hole central axis and its body central axis have same design offset distance value in the lower surface, and this two central axis has onesize design angle value.
8. such as claim 1, the biasing guiding mechanism of 4 described a kind of dynamic guiding type rotary steering drilling tools is characterized in that: the max architecture bent angle of described biasing guiding mechanism is outer eccentric hoop hollow hole central axis and its body central axis design angle value or interior eccentric hoop hollow hole central axis and its body central axis angle value 2 times.
9. such as claim 1, the biasing guiding mechanism of 5 described a kind of dynamic guiding type rotary steering drilling tools, it is characterized in that: when inside and outside eccentric hoop has relative circular motion, the structure bent angle will change between 0 ° and the max architecture bent angle value that designed continuously.
10. such as claim 1, the biasing guiding mechanism of 5 described a kind of dynamic guiding type rotary steering drilling tools, it is characterized in that: auger spindle seals and can realize with seal bellows with the mud of rotation urceolus inside, and the mud sealing of auger spindle and interior eccentric hoop can realize with seal bellows; This biasing mechanism can direct external drill bit, realizes the rotary steerable drilling function.
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| CN106677703A (en) * | 2016-12-23 | 2017-05-17 | 西安石油大学 | Eccentric mechanism of dynamic pointing type rotary guiding well-drilling tool |
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| CN110118058A (en) * | 2019-05-21 | 2019-08-13 | 北京工业大学 | Petal type rotary steering drilling tool |
| CN112878914A (en) * | 2021-02-08 | 2021-06-01 | 中国科学院地质与地球物理研究所 | Rotary steering drilling device |
| US11396777B1 (en) | 2021-02-08 | 2022-07-26 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Rotary steering drilling apparatus |
| CN116753243A (en) * | 2023-08-18 | 2023-09-15 | 凌远科技股份有限公司 | Dynamic directional rotary guiding force transmission bearing system |
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| US20020175003A1 (en) * | 2001-05-09 | 2002-11-28 | Pisoni Attilio C. | Rotary steerable drilling tool |
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| CN104120974A (en) * | 2014-07-22 | 2014-10-29 | 中国地质大学（武汉） | Swing type rotary steering well drilling rig |
| CN104265168A (en) * | 2014-07-28 | 2015-01-07 | 西南石油大学 | Dynamic internal bias point-the-bit rotary steering device |
| CN104832088A (en) * | 2015-03-25 | 2015-08-12 | 中国石油大学(华东) | Dynamic directional rotation guiding well-drilling tool and method for measurement and control |
| CN104832088B (en) * | 2015-03-25 | 2015-11-18 | 中国石油大学(华东) | Dynamic guiding type rotary steering drilling tool and investigating method thereof |
| US9587440B2 (en) | 2015-03-25 | 2017-03-07 | China University Of Petroleum | Dynamic point-the-bit rotary steerable drilling tool and measuring method thereof |
| CN105043447A (en) * | 2015-08-11 | 2015-11-11 | 北京航空航天大学 | Drilling rig testing device under selenographic environment |
| CN106677703A (en) * | 2016-12-23 | 2017-05-17 | 西安石油大学 | Eccentric mechanism of dynamic pointing type rotary guiding well-drilling tool |
| CN106677703B (en) * | 2016-12-23 | 2019-03-26 | 西安石油大学 | A kind of dynamic guiding type rotary steering drilling tool eccentric stiffener |
| US10837235B2 (en) | 2017-11-14 | 2020-11-17 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Hybrid rotary guiding device |
| WO2019095525A1 (en) * | 2017-11-14 | 2019-05-23 | 中国科学院地质与地球物理研究所 | Hybrid rotary guiding device |
| CN108952576A (en) * | 2018-07-24 | 2018-12-07 | 徐芝香 | Torticollis static state pushing type rotary steerable tool |
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| CN110118058A (en) * | 2019-05-21 | 2019-08-13 | 北京工业大学 | Petal type rotary steering drilling tool |
| CN112878914A (en) * | 2021-02-08 | 2021-06-01 | 中国科学院地质与地球物理研究所 | Rotary steering drilling device |
| CN112878914B (en) * | 2021-02-08 | 2021-11-19 | 中国科学院地质与地球物理研究所 | Rotary steering drilling device |
| US11396777B1 (en) | 2021-02-08 | 2022-07-26 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Rotary steering drilling apparatus |
| WO2022165936A1 (en) * | 2021-02-08 | 2022-08-11 | 中国科学院地质与地球物理研究所 | Rotary steerable drilling device |
| CN116753243A (en) * | 2023-08-18 | 2023-09-15 | 凌远科技股份有限公司 | Dynamic directional rotary guiding force transmission bearing system |
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