CN103015894B - Friction and resistance reducing tool with axial crawling function - Google Patents
Friction and resistance reducing tool with axial crawling function Download PDFInfo
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- CN103015894B CN103015894B CN201310020599.0A CN201310020599A CN103015894B CN 103015894 B CN103015894 B CN 103015894B CN 201310020599 A CN201310020599 A CN 201310020599A CN 103015894 B CN103015894 B CN 103015894B
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- worm
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- crawling wheel
- helical gear
- worm gear
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Abstract
The invention relates to a friction and resistance reducing tool with an axial crawling function and used for pneumatic drill large-displacement wells or horizontal wells. The friction and resistance reducing tool mainly comprises an upper joint, an upper conical part, an outer sleeve, a crawling wheel, a crawling wheel positioning lining, a frictional overrunning clutch, a worm gear, a worm mandrel, a lower joint and the like. The upper joint and the worm mandrel are in threaded connection to transfer drilling torque and axial pressure and matched with the outer sleeve and the lower joint to form a clamping mechanism with the hard alloy upper and lower conical parts used for mounting of a dynamic sealing mechanism, and the outer sleeve is clamped by the upper and lower conical parts through key slots. The worm mandrel is meshed with the worm gear to unidirectionally transfer torque to the crawling wheel through a worm and gear mechanism, a worm gear transmission shaft and a crawling wheel transmission shaft to form an axial crawling mechanism. During rotary drilling, a drilling stem drives the axial crawling mechanism to crawl forward initiatively, the outer sleeve does not rotate, and the drilling stem is driven to move forward axially. The friction and resistance reducing tool has the efficacies of axial crawling, friction and resistance reduction, improvement of extensibility of drilling stems of large-displacement wells or horizontal wells.
Description
Technical field
The present invention relates to a kind of for gas brill extended reach well or horizontal well, there is the antifriction instrument of function of axially creeping, for oilfield drilling engineering.
Background technology
The application of extended reach well and horizontal well technology improves well yield and oil gas field recovery ratio greatly, reduces oil and gas development cost, but key character when creeping into---high frictional resistance, high moment of torsion, cause horizontal section length limited.Air drilling can significantly shorten well construction period, reservoir protec-tion.The gas horizontal well drilling that air drilling and horizontal well, extended reach well combine with technique produce, extended reach well technology are that unconventionaloil pool is hidden, the powerful measure of marginal Reservoir Development, but this technology can meet with higher frictional resistance and moment of torsion in drilling process, inhibit the extensive use of this technology.
Improve gas bore extended reach well, horizontal well extension ability and to effectively reduce drag and torque be that this combination technology is successfully crucial.Therefore design has been invented one and has been bored extended reach well or horizontal well for gas, has the antifriction instrument of function of axially creeping.Conventional antifriction instrument is divided into rotation and non-rotating two large classes; mainly comprise non-rotating drill pipe protector, drilling rod bearing short joint, DSTR pipe nipple, low drilling rod moment of torsion and various underground vibrating device, tractor, boost motor etc.; it is reduce the effective contact size of drilling rod in pivoting friction by this type of instrument that resistance mechanism falls in anti-attrition, reduces the frictional resistance at effective contact point place.The present invention is based on the mechanics of materials, engineering mechanics and aerodynamics, by rational design, not only reduce the effective size of drilling rod in pivoting friction, reduce the frictional resistance at effective contact point place, simultaneously in conjunction with the principle drafting tool axial advancement of tractor, initiatively creep, effectively improve drill string extension ability in the wellbore.
Summary of the invention
Object of the present invention: provide a kind of and have the instrument improving drill string down-hole extension ability, reduce frictional resistance, a kind of gas of special proposition bores the antifriction instrument with axial function of creeping of extended reach well or horizontal well.
In order to achieve the above object, the present invention solves the technical scheme that this technical problem adopts: a kind of antifriction instrument with function of axially creeping, primarily of top connection, upper cone, outer sleeve, worm screw mandrel, lower cone, lower contact, worm gear, worm gear drive shaft, support, friction overdrive clutch, crawling wheel positioning lining, crawling wheel, left helical gear, right helical gear, the compositions such as crawling wheel power transmission shaft and cover plate, by worm screw mandrel, worm gear, friction overdrive clutch, left helical gear, the combination gearing of right helical gear and crawling wheel, this instrument is made in drilling process, to have driving shaft to the function of creeping.
Worm screw mandrel engages with worm gear, and torque energy part when being crept into by drill string converts tool spindle to the power of creeping.
Worm screw mandrel rotates and drives worm gear wheel, drives friction overdrive clutch to rotate by worm gear drive shaft, and power transmission to left helical gear and right helical gear, is eventually passed crawling wheel power transmission shaft and drives crawling wheel to travel forward by friction overdrive clutch.
Further provide the annexation of torque transmission mechanism, worm screw mandrel engages with worm gear, worm gear and friction overdrive clutch are fixed on the two ends of worm gear drive shaft, worm gear drive shaft is installed on two fixed supports, two supports are fixed in outer sleeve, by worm screw mandrel, worm gear and worm gear drive shaft, moment of torsion is delivered to friction overdrive clutch, forms torque transmission mechanism;
Further provide the annexation of climbing mechanism, friction overdrive clutch fixing on worm gear drive shaft engages with left helical gear and right helical gear simultaneously; Left helical gear and crawling wheel are fixed on the two ends of a crawling wheel power transmission shaft, and right helical gear and another crawling wheel are fixed on the two ends of another root crawling wheel power transmission shaft; Left helical gear, right helical gear, two crawling wheel power transmission shafts and two crawling wheels are all arranged in crawling wheel positioning lining, and crawling wheel positioning lining to be placed in the hole be located on outer sleeve and to be screwed, and crawling wheel positioning lining arranges cover plate; Friction overdrive clutch drives two crawling wheels to travel forward when rotating simultaneously, forms climbing mechanism, provides the ability of creeping.
Friction overdrive clutch is one-way rotation mechanism, when on carry drill string time, crawling wheel reversion but worm gear mandrel and drill string can not be transmitted torque to.
A preferred scheme is, worm screw mandrel engages with three worm gears distributed by 120 °, phase angle, form three groups of torque transmission mechanisms, outer sleeve arranges to have phase angle be the hole that 120 ° three are identical, one group of crawling wheel positioning lining is installed in each hole, arranging like this can ensure that crawling wheel contacts with the borehole wall in any circumferential orientation, traction drill string axial advancement.
Crawling wheel positioning lining is put into hole and is screwed, left helical gear and a crawling wheel are fixed on crawling wheel power transmission shaft two ends, right helical gear and another crawling wheel are fixed on another root crawling wheel power transmission shaft two ends, then respectively two groups of crawling wheel power transmission shafts are positioned in positioning lining, allow left helical gear and right helical gear engage with friction overdrive clutch simultaneously, add upper cover plate, crawling wheel positioning lining and cover plate are screwed.Friction overdrive clutch and worm gear are fixed on worm gear drive shaft two ends simultaneously, finally rotate worm screw mandrel in round buss, allow worm gear and worm engaging, to provide power of creeping.When friction overdrive clutch rotates, moment of torsion is delivered to crawling wheel power transmission shaft by left helical gear and right helical gear, finally drives crawling wheel to rotate forward, forms climbing mechanism, play antifriction, and driving shaft, to creeping, draws effect of drill string axial advancement.
The present invention is a kind of antifriction instrument with function of axially creeping, in order to reach the effect of worm screw mandrel outer sleeve geo-stationary with drill string rotating, top connection is connected with worm screw mandrel respectively by screw thread with lower contact inside, top connection and lower contact outside are connected by movable sealing mechanism with upper cone and lower cone respectively, and outer sleeve two ends are fixed by keyway with upper cone and lower cone respectively; Ensure upper cone, outer sleeve and the lower cone geo-stationary when drill string rotates, reduce drill string torque; Crawling wheel makes the sliding friction of outer sleeve and the borehole wall become rolling friction, reduces frictional resistance.
Top connection two ends of the present invention are female joint, one end jointed rod, other end connecting worm mandrel; Lower contact two ends are then a public female joint, male joint stacks, and worm screw mandrel is fixed in female joint; Meanwhile, upper and lower connector exterior has step, by upper lower cone and outer sleeve fastening, to reach, the moment of torsion of drilling rod can be passed to worm screw mandrel and the effect turning round tighter and tighter.
The antifriction instrument with function of axially creeping provided by the invention, the inclined-plane tapering of the upper cone after structure optimization and lower cone is 18 °, at upper lower cone inclined-plane and surface spraying hard alloy layer, improve this instrument and resistance to wear and erosion resistance, extend the application life of instrument.
The combination of the worm screw mandrel installed in outer sleeve of the present invention, worm gear, friction overdrive clutch and worm gear drive shaft, has the transmission mechanism of one-way movement.Worm screw mandrel not only can transmit tensile and compress power, also can transmitting torque.
Top connection is connected transmission with worm screw mandrel thread and creeps into moment of torsion and axial compression, and coordinate the upper and lower cone of carbide alloy of outer sleeve and lower contact and installation movable sealing mechanism to form clamping body, upper lower cone is by the stuck outer sleeve of keyway simultaneously.When worm screw mandrel engages with three worm gears distributed by 120 °, phase angle, by three worm-and-wheel gears, worm gear drive shaft and crawling wheel power transmission shaft unidirectional delivery moment of torsion in crawling wheel, form axial climbing mechanism.During rotary drilling, drill string drives axial climbing mechanism initiatively to creep forward, and outer sleeve does not rotate, traction drill string axial advancement.The present invention has the usefulness that axis is creeped, antifriction, raising extended reach well or drillstring in horizontal section extend ability.
The beneficial effect that the present invention has is: due to outer sleeve geo-stationary, this sleeve inner driver not only reduces drill string torque, more when rotary drilling, the torque portions of drill string can be converted into the power of drill string axial advancement, improve directional well and horizontal well extension ability, reduce frictional resistance and moment of torsion.And when on carry drill string time, because friction overdrive clutch is one-way mechanism, the reversion of crawling wheel can't produce reactive torque to drill string.
The crawling wheel that outer sleeve of the present invention is installed is fixed in positioning lining by cover plate through screw, only more need renew crawling wheel, and outer sleeve, crawling wheel positioning lining and cover plate can continue to use after crawling wheel wearing and tearing, is conducive to reducing drilling cost.The present invention can use different crawling wheels instead to improve efficiency of creeping according to Different Strata.
Compared with prior art, the antifriction instrument with function of axially creeping provided by the invention, when creeping into, outer sleeve geo-stationary, reduces moment of torsion; Crawling wheel can not only reduce frictional resistance when creeping into, and torque axis during drill string rotating can also be changed into the power that crawling wheel is creeped forward; While promoting drilling efficiency, traction drill string advances, and improves the extension ability that gas bores extended reach well or horizontal well.The present invention is that gas bores extended reach well or horizontal well technology provides a kind of equipment newly.
Accompanying drawing explanation
Fig. 1 is the 3-D view that the present invention has the antifriction instrument of function of axially creeping.
Fig. 2 is the topology view that the present invention has the antifriction instrument of function of axially creeping.
Fig. 3 is A close-up schematic view in position in Fig. 2.
Fig. 4 is B-B view in Fig. 2, is transmission mechanism schematic diagram of the present invention.
Fig. 5 is A-A view in Fig. 1, is climbing mechanism schematic diagram of the present invention.
Fig. 6 is B close-up schematic view in position in Fig. 2.
Fig. 7 is C close-up schematic view in position in Fig. 5.
Number in the figure: 1-top connection, 2-upper cone, 3-outer sleeve, 4-worm screw mandrel, 5-lower cone, 6-lower contact, 7-worm gear, 8-worm gear drive shaft, 9-support, 10-friction overdrive clutch, 11-crawling wheel positioning lining, 12-crawling wheel, the left helical gear of 13-, the right helical gear of 14-, 15-crawling wheel power transmission shaft, 16-cover plate.
Detailed description of the invention
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
The present embodiment provides a kind of antifriction instrument with function of axially creeping, as shown in accompanying drawing 1, Fig. 2, Fig. 3, form primarily of top connection 1, upper cone 2, outer sleeve 3, worm screw mandrel 4, lower cone 5, lower contact 6, worm gear 7, worm gear drive shaft 8, support 9, friction overdrive clutch 10, crawling wheel positioning lining 11, crawling wheel, left helical gear 13, right helical gear 14, crawling wheel power transmission shaft 15 and cover plate 16.
By the combination gearing of worm screw mandrel 4, worm gear 7, friction overdrive clutch 10, left helical gear 13, right helical gear 14 and crawling wheel 12, this instrument is made in drilling process, to have driving shaft to the function of creeping.
Worm screw mandrel 4 engages with worm gear 7, and torque energy part when being crept into by drill string converts tool spindle to the power of creeping.
Worm screw mandrel rotates and drives worm gear wheel, drives friction overdrive clutch to rotate by worm gear drive shaft, and power transmission to left helical gear and right helical gear, is eventually passed crawling wheel power transmission shaft and drives crawling wheel to travel forward by friction overdrive clutch.
As shown in Figure 4, worm screw mandrel 4 engages with worm gear 7, worm gear 7 and friction overdrive clutch 10 are fixed on the two ends of worm gear drive shaft 8, worm gear drive shaft 8 is installed on two fixed supports, two supports 9 are fixed in outer sleeve 3, by worm screw mandrel 4, worm gear 7, worm gear drive shaft 8, moment of torsion is delivered to friction overdrive clutch 10, forms torque transmission mechanism.
Friction overdrive clutch 10 fixing on worm gear drive shaft 8 engages with left helical gear 13 and right helical gear 14 simultaneously; Left helical gear 13 and crawling wheel are fixed on the two ends of a crawling wheel power transmission shaft, and right helical gear 14 and another crawling wheel are fixed on the two ends of another root crawling wheel power transmission shaft; Left helical gear 13, right helical gear 14, two crawling wheel power transmission shafts and two crawling wheels are all arranged in crawling wheel positioning lining 11, and crawling wheel positioning lining to be placed in the hole be located on outer sleeve and to be screwed, and crawling wheel positioning lining 11 is arranged cover plate 16; Drive two crawling wheels 12 to travel forward when friction overdrive clutch 10 rotates simultaneously, form climbing mechanism, the ability of creeping is provided.
Worm screw mandrel engages with three worm gears distributed by 120 °, phase angle, forms three groups of torque transmission mechanisms.Outer sleeve arranges to have phase angle be the hole that 120 ° three are identical, and install one group of crawling wheel positioning lining 11 in each hole, such arranging can ensure that crawling wheel contacts with the borehole wall in any circumferential orientation, draws drill string axial advancement.
Friction overdrive clutch 10 is one-way rotation mechanism, when on carry drill string time, crawling wheel reversion but worm gear mandrel 4 and drill string can not be transmitted torque to.
As depicted in figs. 1 and 2, in order to reach the effect of worm screw mandrel outer sleeve geo-stationary with drill string rotating, top connection 1 is connected with worm screw mandrel 4 respectively by screw thread with lower contact 6 inside, top connection 1 is connected by movable sealing mechanism with upper cone 2 and lower cone 5 respectively with lower contact 6 outside, outer sleeve 3 two ends are fixed by keyway with upper cone 2 and lower cone 5 respectively, make when worm screw mandrel 4 rotates, top connection 1, outer sleeve 3 and lower contact 6 geo-stationary, reduce drill string torque.
Top connection two ends of the present invention are female joint, one end jointed rod, other end connecting worm mandrel; Lower contact two ends are then a public female joint, male joint stacks, and worm screw mandrel is fixed in female joint; Meanwhile, upper and lower connector exterior has step, by upper lower cone and outer sleeve fastening, to reach, the moment of torsion of drilling rod can be passed to worm screw mandrel and the effect turning round tighter and tighter.
The antifriction instrument with function of axially creeping provided by the invention, the inclined-plane tapering of the upper cone after structure optimization and lower cone is 18 °, at upper lower cone inclined-plane and surface spraying hard alloy layer, improve this instrument and resistance to wear and erosion resistance, extend the application life of instrument.
As shown in Figure 5 and Figure 6, crawling wheel positioning lining 11 is put into the hole be located on outer sleeve and is screwed, a crawling wheel and left helical gear 13 are fixed on crawling wheel power transmission shaft two ends, another crawling wheel and right helical gear 14 are fixed on another root crawling wheel power transmission shaft two ends, respectively two groups of crawling wheel power transmission shafts are installed in crawling wheel positioning lining 11, allow left helical gear 13 and right helical gear 14 engage with friction overdrive clutch 10, crawling wheel positioning lining 11 and cover plate 16 are screwed simultaneously.When friction overdrive clutch 10 rotates, moment of torsion is delivered to crawling wheel power transmission shaft by left helical gear 13 and right helical gear 14, finally drives crawling wheel 12 to rotate forward, form climbing mechanism, play antifriction, driving shaft, to creeping, draws effect of drill string axial advancement.
Use during this instrument and will pay special attention to originally to have axially creep the antifriction instrument of function and the coupling direction of drill string.Coordinate the present invention to use, want conservative control speed when transferring drill string and rotary drill column.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. one kind has the antifriction instrument of function of axially creeping, it is characterized in that: primarily of top connection (1), upper cone (2), outer sleeve (3), worm screw mandrel (4), lower cone (5), lower contact (6), worm gear (7), worm gear drive shaft (8), support (9), friction overdrive clutch (10), crawling wheel positioning lining (11), crawling wheel, left helical gear (13), right helical gear (14), crawling wheel power transmission shaft (15) and cover plate (16) composition, by worm screw mandrel (4), worm gear (7), friction overdrive clutch (10), left helical gear (13), the combination gearing of right helical gear (14) and crawling wheel (12), this instrument is made in drilling process, to have driving shaft to the function of creeping,
Worm screw mandrel (4) engages with worm gear (7), worm gear (7) and friction overdrive clutch (10) are fixed on the two ends of worm gear drive shaft (8), worm gear drive shaft (8) is installed on two fixed supports, two supports (9) are fixed in outer sleeve (3), by worm screw mandrel (4), worm gear (7) and worm gear drive shaft (8), moment of torsion is delivered to friction overdrive clutch (10), forms torque transmission mechanism;
The upper fixing friction overdrive clutch (10) of worm gear drive shaft (8) engages with left helical gear (13) and right helical gear (14) simultaneously; Left helical gear (13) and crawling wheel are fixed on the two ends of a crawling wheel power transmission shaft, and right helical gear (14) and another crawling wheel are fixed on the two ends of another root crawling wheel power transmission shaft; Left helical gear (13), right helical gear (14), two crawling wheel power transmission shafts and two crawling wheels are all arranged in crawling wheel positioning lining (11), crawling wheel positioning lining to be placed in the hole be located on outer sleeve and to be screwed, and crawling wheel positioning lining (11) is arranged cover plate (16); Friction overdrive clutch (10) drives two crawling wheels (12) to travel forward when rotating simultaneously, forms climbing mechanism, provides the ability of creeping;
Top connection (1) is connected with worm screw mandrel (4) respectively by screw thread with lower contact (6) inside, top connection (1) is connected by movable sealing mechanism with upper cone (2) and lower cone (5) respectively with lower contact (6) outside, and outer sleeve (3) two ends are fixed by keyway with upper cone (2) and lower cone (5) respectively.
2. the antifriction instrument with function of axially creeping according to claim 1, it is characterized in that: worm screw mandrel (4) engages with worm gear (7), torque energy part when being crept into by drill string converts tool spindle to the power of creeping.
3. the antifriction instrument with function of axially creeping according to claim 1, it is characterized in that: worm screw mandrel rotates and drives worm gear wheel, friction overdrive clutch is driven to rotate by worm gear drive shaft, power transmission to left helical gear and right helical gear, is eventually passed crawling wheel power transmission shaft and drives crawling wheel to travel forward by friction overdrive clutch.
4. the antifriction instrument with function of axially creeping according to claim 1, is characterized in that: friction overdrive clutch (10) is one-way rotation mechanism.
5. the antifriction instrument with function of axially creeping according to claim 1, it is characterized in that: worm screw mandrel engages with three worm gears distributed by 120 °, phase angle, form three groups of torque transmission mechanisms, outer sleeve arranges to have phase angle be the hole that 120 ° three are identical, one group of crawling wheel positioning lining (11) is installed in each hole, to ensure that crawling wheel contacts with the borehole wall in any circumferential orientation, traction drill string axial advancement.
6. the antifriction instrument with function of axially creeping according to claim 1, is characterized in that: top connection two ends are female joint, one end jointed rod, other end connecting worm mandrel; Lower contact two ends are then a public female joint, male joint stacks, and worm screw mandrel is fixed in female joint; Meanwhile, upper and lower connector exterior has step, can by upper lower cone and outer sleeve fastening.
7. the antifriction instrument with function of axially creeping according to claim 1, is characterized in that: the inclined-plane tapering of upper cone and lower cone is 18 °, has hard alloy layer on upper lower cone inclined-plane and surface spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020599.0A CN103015894B (en) | 2013-01-21 | 2013-01-21 | Friction and resistance reducing tool with axial crawling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020599.0A CN103015894B (en) | 2013-01-21 | 2013-01-21 | Friction and resistance reducing tool with axial crawling function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103015894A CN103015894A (en) | 2013-04-03 |
| CN103015894B true CN103015894B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310020599.0A Expired - Fee Related CN103015894B (en) | 2013-01-21 | 2013-01-21 | Friction and resistance reducing tool with axial crawling function |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563908B (en) * | 2015-01-19 | 2016-06-22 | 西南石油大学 | Rub drag reduction moment of torsion arrangement of clutch and method thereof drop in one |
| CN105003211B (en) * | 2015-07-01 | 2017-03-08 | 西南石油大学 | A kind of self-advancing type the pressure of the drill applies instrument |
| CN104912493B (en) * | 2015-07-02 | 2017-01-04 | 西南石油大学 | A kind of hydraulic type anti-sliding drill tools |
| CN105927169B (en) * | 2016-05-12 | 2017-12-15 | 西南石油大学 | A kind of coiled tubing the pressure of the drill torque increaser |
| CN106837197B (en) * | 2017-03-09 | 2019-03-08 | 长江大学 | A kind of anti-disabling device of the anti-brake tool of flexible strand |
| CN113374429B (en) * | 2021-06-28 | 2023-03-10 | 中北大学 | Deep mine drilling draw gear |
| CN114293913B (en) * | 2022-03-11 | 2022-05-13 | 西南石油大学 | Downhole friction-reducing and resistance-reducing tool and method based on mechanical decoupling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1537291T3 (en) * | 2002-07-25 | 2007-11-19 | Schlumberger Technology Bv | drilling method |
| CN201246114Y (en) * | 2008-09-11 | 2009-05-27 | 大港油田集团有限责任公司 | Anti-friction and twist well drilling collar |
| GB0904574D0 (en) * | 2009-03-18 | 2009-04-29 | Wireline Engineering Ltd | Improved downhole device |
| CN201635674U (en) * | 2010-04-07 | 2010-11-17 | 中国石油集团川庆钻探工程有限公司 | Roller stabilizer for gas drilling |
| CN201972622U (en) * | 2010-12-17 | 2011-09-14 | 中国石油集团长城钻探工程有限公司 | Resistance-reduction and torque-reduction tool for large-displacement well |
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2013
- 2013-01-21 CN CN201310020599.0A patent/CN103015894B/en not_active Expired - Fee Related
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