CN203374204U - Controllable bent connector guide device - Google Patents
Controllable bent connector guide device Download PDFInfo
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- CN203374204U CN203374204U CN201320386591.1U CN201320386591U CN203374204U CN 203374204 U CN203374204 U CN 203374204U CN 201320386591 U CN201320386591 U CN 201320386591U CN 203374204 U CN203374204 U CN 203374204U
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Abstract
A controllable bent connector guide device comprises a rotary outer sleeve. An altered universal shaft is arranged in the rotary outer sleeve, the left end of the altered universal shaft is inserted into an inner eccentric ring, the inner eccentric ring is installed in an outer eccentric ring and connected to a spherical bearing in a sleeved mode, the left end of the inner eccentric ring is provided with an eccentric controller, the outer eccentric ring is supported by a bearing and connected with an electromotor through a drive shaft, the right end of the altered universal shaft is provided with a spherical guide mechanism, the right end of the spherical guide mechanism is a torque transmission mechanism, a pressure compensation mechanism is installed in the rotary outer sleeve, the right end of the torque transmission mechanism is provided with a sealing device and enables the angular displacement of the altered universal shaft to continuously change, the phenomenon that the altered universal shaft is stuck or the angular displacement of the altered universal shaft cannot be changed continuously cannot occur, and accordingly guiding of a rotary guide drilling tool is stabilized. The utility model further provides an oval roller path, and therefore the stress condition of a steel ball when power transmission is carried out is improved.
Description
Technical field
The utility model relates to a kind of rotary steering drilling tool, particularly a kind of controllable bending joint guiding device.
Background technology
The rotary steerable drilling technology is the most advanced and sophisticated automated drilling technology grown up latter stage in 20th century, and at some complicated structures, as ocean, there is the wide application of sending out on the stratum that the exploration and development difficulty such as Hai， desert, beach and cost increase greatly.It has the frictional resistance of reduction and bit freezing risk, improves hole quality and drilling efficiency, reduces the characteristics such as drilling cost, is therefore research emphasis and the developing direction of modern steerable drilling.
Traditional drilling technology relies on the mode of bent sub and power drilling tool combination to be led, and bent sub is connected to not between rotary drill column and power drilling tool, and due to the bent angle of bent sub, the dilling angle of drill bit and drill string axis shape are at a certain angle.This steering drilling tool is simple in structure, and cost is less, is widely used in the guiding of directional well.But this kind of steerable drilling technology has a lot of defects, as bent sub bears larger moment of flexure and the pressure of the drill, easily damage; The mode that slip is crept into the frictional resistance of drill string is constantly increased so that the drilling well limit depth that causes limited; Can't complete the probing of the exceptional wells such as horizontal well; The well cleaning is bad etc.
The nineties in last century, a kind of brand-new closed loop drilling technology---rotary steerable drilling technology is come out, the rotary steerable drilling technology has overcome the defect of traditional direction drilling technology, can adapt to complex geological condition and the probing that completes the exceptional wells such as horizontal well, extended reach well.Rotary steering drilling tool is that the guiding that realizes wellbore trace under the state of drill string rotating operation is controlled, and is the last qualitative leap of drilling technology, is representing the highest level of current drilling technology.
The realization of rotary steering drilling tool guiding relies on the guiding mechanism of down-hole.Guiding mechanism, according to the difference of guidance mode, can be divided into pushing type and directional type; According to the difference of duty, can be divided into static type and dynamic type modulation system.
The characteristics of pushing type rotary steering system are that lateral force is large, and build angle rate is high, but the well dog-leg degree that rotary steering gets out is large, and the track fluctuation is large, and unsmooth, the wearing and tearing of drill bit and bit bearing are more serious, have the hypodynamic problem of guiding in soft stratum.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is to provide a kind of controllable bending joint guiding device, this device can make the angular displacement of variation variation universal drive shaft continuously change, can not produce the stuck phenomenon that maybe can not continuously change angular displacement of variation universal drive shaft, thereby stablize the guiding of rotary steering drilling tool; The utility model also provides a kind of oval raceway, and steel ball force-bearing situation when transferring power is improved.
To achieve these goals, the utility model adopts following technology:
A kind of controllable bending joint guiding device, comprise rotary sleeve 1, there is variation universal drive shaft 14 rotary sleeve 1 inside, the left end of variation universal drive shaft 14 inserts in interior eccentric hoop 4, interior eccentric hoop 4 is arranged on outer eccentric hoop 2 inside and is socketed on spherical bearing 15, the left end of interior eccentric hoop 4 is equipped with eccentricity control device 16, and outer eccentric hoop 2 is supported by bearing 3 and passes through driving shaft 17 and is connected with motor 18, variation universal drive shaft 14 right-hand members are equipped with the sphere guiding mechanism, the sphere guiding mechanism consists of four sphere guide pads, be respectively the first sphere guide pad 5, the 4th sphere guide pad 13, the 3rd sphere guide pad 12 and the second sphere guide pad 11, one side near the 3rd sphere guide pad 12 on the 4th sphere guide pad 13 has four pin-and-holes, four thrust pin 6 partial insertions are in pin-and-hole, part coordinates transmission of pressure to variation universal drive shaft 14 with sphere guide pad 13, the right-hand member of sphere guiding mechanism is torque-transmitting mechanisms, torque-transmitting mechanisms has ball cage shell 7, steel ball 8, retainer 9 and variation universal drive shaft 14 form, the spherical segment of ball cage shell 7 and variation universal drive shaft 14 has 8 raceways, the cross section of raceway is oval, the bus of raceway is circular arc, steel ball 8 is between ball cage shell raceway 20 and variation universal drive shaft raceway 21, it is tangent that steel ball face and roller surface keep, be placed with retainer 9 between the spherical segment of ball cage shell 7 and variation universal drive shaft 14, steel ball 8 also is arranged in the perforate of retainer 9 simultaneously, pressure compensation mechanism 19 is arranged in rotary sleeve 1, and the endoporus of pressure compensation mechanism 19 coordinates with eccentric stiffener 2, matches with bearing 3 in right side, the torque-transmitting mechanisms right-hand member is provided with sealing device 10.
The right-hand member of described variation universal drive shaft 14 has taper thread 22, variation universal drive shaft 14 has spheric profile section 23, spheric profile Duan23 center is the oscillation center of variation universal drive shaft, the left end of the spheric profile end 23 of variation universal drive shaft 14 has four variation universal drive shaft pin-and-holes 24, and it is suitable that the pin-and-hole on variation universal drive shaft pin-and-hole 24 and the 3rd sphere guide pad 12 is combined formation square space and thrust pin 6.
The utility model is owing to adopting above mechanism; It has the following advantages:
1, the utility model ball cage shell 7, steel ball 8, retainer 9 and a torque-transmitting mechanisms of variation universal drive shaft 14 common compositions, make the biasing displacement of this guiding mechanism can realize continuous variation.
2, when the utility model transmission of pressure, mode by sphere guiding mechanism and thrust pin 6 combinations is carried out, the sphere guiding mechanism is by sphere guide pad 5,13,12,11 form, and the centre of sphere of all guide pads, all in the center of torque-transmitting mechanisms, has played the effect of location and adaptation variation in angular displacement.
3, oval advantage the utility model adopts oval raceway, and 2 of steel ball and raceways are contacted, can be accurate when being subject to large load, transmit reliably motion and moment of torsion.
4, the utility model adopts the design of eccentric hoop group to carry out bias to show as Fig. 2, when the eccentric direction of two eccentric hoops is identical, and the displacement of described eccentric stiffener generation maximum eccentric, when both eccentric directions are contrary, eccentric throw is cancelled out each other, and center displacement is zero.Two outer eccentric hoops are respectively by power drive separately, and outer eccentric hoop drives by controllable motor, and interior eccentric hoop also can drive by motor or other modes.Two eccentric hoops, in the different displacement of each self-driven lower generation, make bias axis reach required angular displacement.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 be the A-A of Fig. 1 to sectional view, wherein Fig. 2 A is the schematic diagram of eccentric throw when maximum, Fig. 2 B is eccentric throw schematic diagram hour.
Fig. 3 is that the B-B of Fig. 1 is to sectional view.
Fig. 4 is steel ball 8 contact schematic diagram on elliptic roller track 20 in torque-transmitting mechanisms.
Fig. 5 is the schematic diagram of variation universal drive shaft 14.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
With reference to Fig. 1, Fig. 3, a kind of controllable bending joint guiding device, comprise rotary sleeve 1, there is variation universal drive shaft 14 rotary sleeve 1 inside, the left end of variation universal drive shaft 14 inserts in interior eccentric hoop 4, interior eccentric hoop 4 is arranged on outer eccentric hoop 2 inside and is socketed on spherical bearing 15, the left end of interior eccentric hoop 4 is equipped with eccentricity control device 16, eccentricity control device 16 is controlled interior eccentric hoop 4, interior eccentric hoop 4, outer eccentric hoop 2, spherical bearing 15 and eccentricity control device 16 form eccentricity control mechanism, outer eccentric hoop 2 is supported by bearing 3 and passes through driving shaft 17 and is connected with motor 18, motor 18 drives outer eccentric hoop 2 by driving shaft 17 and rotates, variation universal drive shaft 14 right-hand members are equipped with the sphere guiding mechanism, and the sphere guiding mechanism consists of four sphere guide pads, is respectively the first sphere guide pad 5, the 4th sphere guide pad 13, the 3rd sphere guide pad 12 and the second sphere guide pad 11.One side near the 3rd sphere guide pad 12 on the 4th sphere guide pad 13 has four pin-and-holes, and four thrust pin 6 partial insertions are in pin-and-hole, and part coordinates transmission of pressure to variation universal drive shaft 14 with sphere guide pad 13.The right-hand member of sphere guiding mechanism is torque-transmitting mechanisms, torque-transmitting mechanisms has ball cage shell 7, steel ball 8, retainer 9 and variation universal drive shaft 14 to form, the spherical segment of ball cage shell 7 and variation universal drive shaft 14 has 8 raceways, the cross section of raceway is oval, the bus of raceway is circular arc, and steel ball 8 is between ball cage shell raceway 20 and variation universal drive shaft raceway 21, and it is tangent that steel ball face and roller surface keep, steel ball moves in raceway, and the movement locus track is circular arc.Be placed with retainer 9 between the spherical segment of ball cage shell 7 and variation universal drive shaft 14, steel ball 8 also is arranged in the perforate of retainer 9 simultaneously.Retainer 9 swings along center of arc with steel ball.Described structure can make the relative urceolus of bias axis swing along center of arc.Pressure compensation mechanism 19 is arranged in rotary sleeve 1, and the endoporus of pressure compensation mechanism 19 coordinates with eccentric stiffener 2, matches with bearing 3 in right side, plays sealing and pressure compensated effect.The torque-transmitting mechanisms right-hand member is provided with sealing device 10, stops the intrusions such as mud in drilling process.
With reference to Fig. 5, the right-hand member of described variation universal drive shaft 14 has taper thread 22, for drill bit is installed; Variation universal drive shaft 14 has spheric profile section 23, spheric profile Duan23 center is the oscillation center of variation universal drive shaft, have 8 variation universal drive shaft raceways 21 on spheric profile section 23, the left end of the spheric profile end 23 of variation universal drive shaft 14 has four variation universal drive shaft pin-and-holes 24.It is suitable that pin-and-hole on variation universal drive shaft pin-and-hole 24 and the 3rd sphere guide pad 12 is combined formation square space and thrust pin 6.
Operating principle of the present utility model is: rotary sleeve 1 keeps rotation, and ball cage shell 7 is fixed on rotary sleeve 1, with rotary sleeve, moves, and ball cage shell 7, by steel ball 8, transfers a torque to variation universal drive shaft 14.Steel ball 8 is in raceway 20, the interior motion of raceway 21, and movement locus is circular arc, makes variation universal drive shaft 14 when self axis rotates, can also be swung along the center of circular arc.
With reference to Fig. 4, the sphere of steel ball 8 and elliptic roller track 20,21 are tangent, according to geometrical relationship, can be calculated the semi-minor axis a of elliptic roller track by steel ball size, pressure angle, semi-major axis b and the steel ball centre of sphere to elliptical center apart from e.In the design, steel ball size is 24, and pressure angle is 45 °.Steel ball remains that with track contact at 2, can be accurate, transmit reliably motion and moment of torsion.
The low order end of variation universal drive shaft 14 has taper thread, and for drill bit is installed, the corresponding change occurs the direction that the angular displacement that variation universal drive shaft 14 swings generation is crept into drill bit.
Have four groups of pin-and-holes on variation universal drive shaft 14, place thrust pin 6 in pin-and-hole, thrust pin 6 coordinates with the pin-and-hole of variation universal drive shaft 14 and the perforate of sphere guide pad 13.Drilling pressure is by rotary sleeve 1 like this, and through sphere guide pad 5, sphere guide pad 13, be delivered on variation universal drive shaft 14 by thrust pin 6.The left end of variation universal drive shaft 14 coordinates with spheric seat 15, forms a cylindrical pair, and spheric seat 15 and interior eccentric hoop group 14 form typed ball bearing pair, makes variation universal drive shaft 14 can not be stuck in the process swung.Interior eccentric hoop group is around the center of outer eccentric hoop 2 o
1rotation, outer eccentric hoop 2 is around rotary sleeve center o rotation, as shown in Figure 2.The variation of inside and outside eccentric hoop relative position, the variation that causes closing center displacement, when closing center displacement and being zero, the axis of variation universal drive shaft 14 and the dead in line of rotary sleeve, system enters straight line pattern; While closing the center displacement maximum, the variation universal drive shaft is with respect to the angular displacement maximum of rotary sleeve axis, and system enters guided mode.Because the resultant displacement of inside and outside eccentric hoop can realize that zero to the continuous adjusting between maximum value, so variation universal drive shaft 14 pendulum angles also can realize that zero to the continuous adjusting between maximum value.
Interior eccentric hoop 4 is subject to drive unit 16 to drive generation to rotatablely move, and outer eccentric hoop 2 is subject to controllable motor 18 to drive generation to rotatablely move.When controlled instruction, drive unit 16 and controllable motor 18 start to regulate inside and outside eccentric hoop, after arriving preposition, and drive unit 16 stop motions, the adjustment of rotational speed of controllable motor 18 is extremely equal with the speed of rotary sleeve 1, but opposite direction.
In sum, by adopting above-mentioned controllable bending joint design, can guarantee that the angular displacement of drill bit realizes continuous variation in drilling process, and be stabilized in certain angle.
Claims (2)
1. a controllable bending joint guiding device, it is characterized in that, comprise rotary sleeve (1), there is variation universal drive shaft (14) rotary sleeve (1) inside, the left end of variation universal drive shaft (14) inserts in interior eccentric hoop (4), interior eccentric hoop (4) is arranged on outer eccentric hoop (2) inside and is socketed on spherical bearing (15), the left end of interior eccentric hoop (4) is equipped with eccentricity control device (16), and outer eccentric hoop (2) is supported by bearing (3) and passes through driving shaft (17) and is connected with motor (18), variation universal drive shaft (14) right-hand member is equipped with the sphere guiding mechanism, the sphere guiding mechanism consists of four sphere guide pads, be respectively the first sphere guide pad (5), the 4th sphere guide pad (13), the 3rd sphere guide pad (12) and the second sphere guide pad (11), one side near the 3rd sphere guide pad (12) on the 4th sphere guide pad 13 has four pin-and-holes, four thrust pins (6) partial insertion is in pin-and-hole, part coordinates transmission of pressure to variation universal drive shaft (14) with the 4th sphere guide pad (13), the right-hand member of sphere guiding mechanism is torque-transmitting mechanisms, torque-transmitting mechanisms has ball cage shell (7), steel ball (8), retainer (9) and variation universal drive shaft (14) form, the spherical segment of ball cage shell (7) and variation universal drive shaft (14) has 8 raceways, the cross section of raceway is oval, the bus of raceway is circular arc, steel ball (8) is positioned between ball cage shell raceway (20) and variation universal drive shaft raceway (21), it is tangent that steel ball face and roller surface keep, be placed with retainer (9) between the spherical segment of ball cage shell (7) and variation universal drive shaft (14), steel ball (8) also is arranged in the perforate of retainer (9) simultaneously, pressure compensation mechanism (19) is arranged in rotary sleeve (1), the endoporus of pressure compensation mechanism (19) coordinates with eccentric stiffener (2), match with bearing (3) in right side, the torque-transmitting mechanisms right-hand member is provided with sealing device (10).
2. a kind of controllable bending joint guiding device according to claim 1, it is characterized in that, the right-hand member of described variation universal drive shaft (14) has taper thread (22), variation universal drive shaft (14) has spheric profile section (23), the center of spheric profile section (23) is the oscillation center of variation universal drive shaft, the left end of the spheric profile end (23) of variation universal drive shaft (14) has four variation universal drive shaft pin-and-holes (24), and it is suitable that the pin-and-hole on variation universal drive shaft pin-and-hole (24) and the 3rd sphere guide pad (12) is combined formation square space and thrust pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320386591.1U CN203374204U (en) | 2013-07-01 | 2013-07-01 | Controllable bent connector guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320386591.1U CN203374204U (en) | 2013-07-01 | 2013-07-01 | Controllable bent connector guide device |
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| Publication Number | Publication Date |
|---|---|
| CN203374204U true CN203374204U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320386591.1U Expired - Fee Related CN203374204U (en) | 2013-07-01 | 2013-07-01 | Controllable bent connector guide device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510872A (en) * | 2013-07-01 | 2014-01-15 | 西安石油大学 | Controllable bent joint guiding mechanism |
| CN104314469A (en) * | 2014-10-15 | 2015-01-28 | 洛阳市申甲机械设备有限公司 | Deviation mechanism for rotating guide drilling tool |
| CN105569569A (en) * | 2015-11-19 | 2016-05-11 | 西南石油大学 | Novel inwards pushing and directional type rotation guiding tool |
| CN108301770A (en) * | 2017-01-12 | 2018-07-20 | 通用电气公司 | Automatically adjust oriented drilling device and method |
| CN108979533A (en) * | 2018-07-23 | 2018-12-11 | 徐芝香 | There is the rotary steerable tool of packet |
| CN111287659A (en) * | 2020-03-30 | 2020-06-16 | 西安石油大学 | Build-up rate adjusting method based on full-rotation directional type guiding drilling tool |
| CN108661558B (en) * | 2018-06-26 | 2021-06-08 | 徐芝香 | Dynamic deflectable rotary steering tool |
-
2013
- 2013-07-01 CN CN201320386591.1U patent/CN203374204U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510872A (en) * | 2013-07-01 | 2014-01-15 | 西安石油大学 | Controllable bent joint guiding mechanism |
| CN104314469A (en) * | 2014-10-15 | 2015-01-28 | 洛阳市申甲机械设备有限公司 | Deviation mechanism for rotating guide drilling tool |
| CN105569569A (en) * | 2015-11-19 | 2016-05-11 | 西南石油大学 | Novel inwards pushing and directional type rotation guiding tool |
| CN105569569B (en) * | 2015-11-19 | 2017-08-25 | 西南石油大学 | Directional type rotary steerable tool is pushed away in new |
| CN108301770A (en) * | 2017-01-12 | 2018-07-20 | 通用电气公司 | Automatically adjust oriented drilling device and method |
| CN108301770B (en) * | 2017-01-12 | 2019-11-05 | 通用电气公司 | Automatically adjust oriented drilling device and method |
| CN108661558B (en) * | 2018-06-26 | 2021-06-08 | 徐芝香 | Dynamic deflectable rotary steering tool |
| CN108979533A (en) * | 2018-07-23 | 2018-12-11 | 徐芝香 | There is the rotary steerable tool of packet |
| CN111287659A (en) * | 2020-03-30 | 2020-06-16 | 西安石油大学 | Build-up rate adjusting method based on full-rotation directional type guiding drilling tool |
| CN111287659B (en) * | 2020-03-30 | 2021-09-07 | 西安石油大学 | Build-up rate adjusting method based on full-rotation directional type guiding drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |