CN108104715B - Torsion impactor based on turbine and gear - Google Patents
Torsion impactor based on turbine and gear Download PDFInfo
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- CN108104715B CN108104715B CN201810130681.1A CN201810130681A CN108104715B CN 108104715 B CN108104715 B CN 108104715B CN 201810130681 A CN201810130681 A CN 201810130681A CN 108104715 B CN108104715 B CN 108104715B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 193
- 238000007789 sealing Methods 0.000 claims description 44
- 238000005553 drilling Methods 0.000 abstract description 42
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/02—Adaptations for drilling wells
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides a torsion impactor based on a turbine and a gear, which solves the problem of stick-slip vibration generated by a drill bit in the drilling process. The technical proposal is as follows: the drilling fluid drilling device comprises a turbine assembly, an adapter and an impact assembly, wherein the turbine assembly generates high-speed rotary motion under the impact action of drilling fluid so as to drive a flange transmission shaft to rotate; on one hand, the flange transmission shaft drives the eccentric impact hammer to rotate at a high speed through the transmission shaft and the transmission pin; on the other hand, the external gear is driven to rotate and meshed with the internal gear shell, a lower rotating speed is transmitted to the internal gear shell, and then the impact transmission shaft is driven to rotate at a lower rotating speed; thereby forming a rotation speed difference with the eccentric impact hammer, generating an impact effect, and transmitting torsional vibration generated by the impact to the lower joint through the impact transmission shaft. The invention can continuously generate torsional impact vibration, improve the rock breaking efficiency of the drill bit and effectively avoid the phenomena of drill sticking and sliding.
Description
Technical Field
The invention relates to a torsion impactor based on a turbine and a gear, which is used in the fields of petroleum and natural gas shale gas drilling, mining, geological drilling and the like.
Background
In recent years, as the national demand for petroleum and natural gas is increasing, the exploitation of shale gas is also a current hot spot and is also a challenge. Because during the drilling process, the drilling pressure applied to the drill bit is unstable due to the fact that the driller is not timely or the driller is too fast due to driller technology and experience problems or due to the problem of well wall friction, the rock breaking efficiency is affected, and even the drilling speed is possibly affected due to the fact that the drill bit, the cutting teeth of the broken drill bit and the like are damaged due to the fact that the drilling pressure is suddenly increased. On the other hand, PDC bits often do not have enough torque to break rock when drilling hard or abrasive formations, thereby creating a stuck bit, and release of torque from the drill rod downhole results in bit failure. The rock of the deep stratum of the oil field is hard and has high grinding extremum, the conventional roller bit is used for drilling, the single bit has small footage, multiple tripping is needed, and the mechanical drilling speed is low; when the screw is used for compound drilling, the service life of the screw is low and the use effect is not ideal due to higher temperature in a deep well; meanwhile, stick-slip vibration is frequently generated in the deep well drilling process, so that the drilling tool is easy to fail due to the stick-slip vibration, and the mechanical drilling speed is reduced. In addition, the mechanical drilling speed can be improved to a greater extent by adopting the gas drilling technology, but the underground complex situation is easy to occur under the condition of stratum water outlet, and the gas drilling supporting equipment is more, so that the cost is relatively high.
Aiming at the problems, various tools are tried at home and abroad, and a certain accelerating effect is achieved, wherein the high-frequency torsional impact type tools take the dominant role of the accelerating tools. Both field experiments and theoretical researches show that the tool can add high-frequency torsional impact force to the drill bit to assist the drill bit to break rock, reduce the stick-slip phenomenon of the drill string, improve the mechanical drilling speed, reduce the drilling cost, realize greater economic benefit and better ensure the safety of drilling.
Disclosure of Invention
The purpose of the invention is that: in order to solve the problems of failure of a drilling tool and lower mechanical drilling speed caused by sticking and sliding of a drill bit and a drill stem in the drilling process, the torsion impactor based on the turbine and the gear is particularly provided, so that the defects of the prior art are overcome, and the drilling speed is improved. The tool can effectively protect the drill bit, reduce cost, improve rock breaking efficiency and increase drilling efficiency.
The technical scheme of the invention is as follows: torsion impacter based on turbine and gear, its characterized in that: the torsion impactor based on the turbine and the gear consists of a turbine assembly, an adapter and an impact assembly, wherein the lower end of the turbine assembly is connected with the adapter, and the adapter is connected with the short connector so as to be connected with the impact assembly; the turbine assembly comprises a turbine shell, an angular contact ball bearing, an anti-drop ring A, a positioning sleeve A, a turbine stator, a turbine rotor, a transmission key, a positioning sleeve B, a rectangular sealing ring, a turbine shaft, a cylindrical roller bearing, a thrust ball bearing and the anti-drop ring B, wherein the turbine rotor, the turbine stator and the positioning sleeve B are sequentially arranged on the turbine shaft through the transmission key, the anti-drop ring A is arranged on the upper part of the turbine shaft, two angular contact ball bearings are reversely arranged on the turbine shell and the upper part of the turbine shaft, the positioning sleeve A and the rectangular sealing ring are arranged on the turbine shell in advance, the turbine stator is placed in the turbine shell through spline fit, the cylindrical roller bearing, the thrust ball bearing and the anti-drop ring B are sequentially arranged on the front step of the turbine shaft from top to bottom, and the lower end of the turbine shaft is in threaded connection with a turbine transmission shaft; the upper end of the conversion joint is connected with the turbine shell, and the lower end of the conversion joint is connected with the short joint; the impact assembly generates unidirectional torsion impact and comprises a flange transmission shaft, a screw, an external gear, a nut, a lower shell, an O-shaped sealing ring A, an internal gear shell, a combined bearing A, a spline transmission shaft, a radial bearing, a spline transmission block, an impact transmission shaft, an eccentric impact hammer, a transmission pin A, a transmission pin B, a transmission shaft, a combined bearing B, a combined bearing C, an impact outer cylinder, a diversion bearing group, a diversion sleeve, an O-shaped sealing ring B, a thrust bearing and an O-shaped sealing ring C; the upper part of the flange transmission shaft is provided with a threaded hole, the flange transmission shaft is connected with the lower end of the turbine transmission shaft 15 through threads, the lower end face of the flange transmission shaft is driven by the turbine transmission shaft to rotate, 3 uniformly distributed through holes are formed in the circumferential direction of the lower end face of the flange transmission shaft, the upper end of the flange transmission shaft is provided with 3 uniformly distributed through holes which are the same as the lower end face of the flange transmission shaft, positioning is realized for screws and nuts, the shaft shoulder in the middle of the transmission shaft is provided with two sealing ring grooves, an installation position is provided for an O-shaped sealing ring A, the lower section of the transmission shaft is milled into a plane in the direction of 180 degrees, and grooves for installing transmission pins are formed in the other 180 degrees; the center of the external gear is provided with a through hole along the axial direction, a sliding bearing is installed and fixed in the through hole, a screw axially penetrates through the sliding bearing, and the external gear is installed between the flange transmission shaft and the transmission shaft and is fixed through the screw and the nut; the upper end of the inner gear shell is provided with teeth meshed with the outer gear, the middle part of the inner gear shell is provided with a shaft shoulder, two fan-shaped flow passages are formed in the inner part in the 180-degree direction, and two opposite grooves are formed in the lower part of the inner gear shell in the 180-degree direction; the upper end of the impact outer cylinder is provided with 8 radial through holes in the circumferential direction, a circulation channel is provided for drilling fluid, the drilling fluid flows into the inner gear shell flow channel from the inside, the lower end is provided with two protruding transmission blocks opposite in the 180-degree direction in the circumferential direction, the protruding transmission blocks are matched with two grooves at the lower part of the inner gear shell, and the middle upper section in the impact outer cylinder is provided with an inner spline structure; the spline transmission shaft is provided with a through hole matched with the transmission shaft along the axial direction, the upper end of the spline transmission shaft is provided with an external spline structure matched with the impact outer cylinder, and the lower end of the spline transmission shaft is also provided with an external spline structure; the spline transmission block is internally provided with an internal spline building structure matched with the lower end of the spline transmission shaft, and the outer circumference direction is provided with a circumferential step; the inside of the impact transmission shaft is of a cavity structure, a step matched with the spline transmission block is arranged in the circumferential direction of the upper end, a circumferential step serving as an impact seat is arranged in the middle of the impact transmission shaft, a straight thread is arranged at the lower end of the impact transmission shaft, and the end face of the lower end is of an inner hexagon structure, so that the impact transmission shaft is convenient to install and fix; the eccentric impact hammer is of a hollow structure, a circumferential step which is matched with the impact transmission shaft and is used as the impact hammer is arranged on the outer circumferential direction, a transmission pin groove is formed in the eccentric impact hammer, and a sliding transmission pin groove is formed in the opposite direction of the eccentric impact hammer in a 180-degree direction; the O-shaped sealing ring A is arranged in a sealing ring groove of the transmission shaft, the combined bearing A is arranged at the upper middle section of the transmission shaft, and the combined bearing B is arranged at the lower end of the transmission shaft, so that the axial and radial fixation of the whole structure is realized; the spline transmission block is sleeved on the transmission shaft, the inside of the spline transmission block is matched with the spline transmission shaft, and the outside of the spline transmission block is matched with the impact transmission shaft, so that torque transmission is realized; the driving pin A and the driving pin B are respectively arranged in two driving pin grooves of the driving shaft to realize the fixation of the driving pin, the eccentric impact hammer is sleeved outside the lower end of the driving shaft, the driving pin A is clamped in the driving pin groove of the driving shaft, and the driving pin B is clamped in the sliding driving pin groove of the driving shaft; the matched transmission shaft, the transmission pin A, the transmission pin B, the eccentric impact hammer and the combined bearing B are all arranged in the cavity of the impact transmission shaft to realize installation and fixation; the radial bearing is sleeved on the spline transmission shaft and is fixed with the middle section shaft shoulder of the impact outer cylinder through the spline transmission shaft; the combined bearing C is sleeved at the lower end of the impact transmission shaft and is fixed through a shaft shoulder at the lower end of the impact outer cylinder; the impact outer cylinder is sleeved in the inner gear shell; the guide bearing group is sleeved at the lower section of the inner gear shell, positioned through the shaft shoulder of the inner gear shell and simultaneously installed in the lower shell; the upper end of the lower shell is connected with the short joint through threads, and the lower end of the lower shell is connected with the flow guiding sleeve through threads, so that the whole tool is assembled and fixed; the center of the lower joint is provided with a threaded through hole to realize connection and fixation with the impact transmission shaft, and the end face of the lower joint is provided with an axial through hole to provide a liquid flow channel for drilling fluid; the thrust bearing is arranged between the diversion bearing group and the lower joint, and the O-shaped sealing ring C is arranged between the lower shell and the lower joint to realize end face sealing.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the number of the screws, the external gear and the nuts is 3.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the guide bearing group can bear radial force and axial force, and the bearing is provided with 12 uniformly distributed axial through holes along the circumferential direction.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the radial bearings are arranged in a matched mode and are 2.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the combined bearing A, the combined bearing B and the combined bearing C are needle roller and thrust combined ball bearings.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the upper half part of the guide sleeve is of an outer cone structure.
In the above-mentioned scheme, torsion impacter based on turbine and gear, its characterized in that: the O-shaped sealing rings A, O are of double-sealing structures, and the O-shaped sealing rings C are of end face sealing structures.
The beneficial effects of the invention are as follows: (1) Impact is realized through the turbine and the differential gear, and the working performance is stable and reliable; (2) The difficult problem of blockage or clamping caused by a downhole drilling tool in the drilling process is solved; (3) The tool has reasonable design and reliable performance, effectively protects the drill bit by generating circumferential impact, eliminates the phenomena of sticking and slipping of the drill bit and the drill sticking phenomenon, and improves the mechanical drilling speed; (4) The tool has strong adaptability, not only can be applied to deep vertical wells, but also can be applied to directional wells and horizontal wells by matching with directional instruments; (5) The tool has a dead point or not, and provides high-frequency torsion impact; (6) The mechanical drilling speed of the deep well hard stratum can be effectively improved by being matched with the PDC drill bit.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a cross-sectional view A-A of FIG. 1 in accordance with the present invention.
FIG. 3 is a section B-B of FIG. 1 according to the present invention.
FIG. 4 is a cross-sectional view of the C-C of FIG. 1 in accordance with the present invention.
Fig. 5 is a sectional view of the D-D of fig. 1 according to the present invention.
Fig. 6 is a cross-sectional view of the invention from fig. 1.
FIG. 7 is a cross-sectional view of F-F in FIG. 1 in accordance with the present invention.
Fig. 8 is a sectional view of the G-G of fig. 1 according to the present invention.
FIGS. 9-12 illustrate a single impact cycle process of the present invention, with FIG. 9 illustrating the non-impact of the eccentric impact hammer with the impact drive shaft; FIG. 10 shows the eccentric impact hammer just contacting two impact surfaces of the impact drive shaft; FIG. 11 illustrates the eccentric impact hammer during a collision with an impact drive shaft; fig. 12 shows that the eccentric impact hammer and the impact transmission shaft have just separated from each other.
The turbine housing, 2, angular contact ball bearing, 3, drop-out prevention ring A,4, locating sleeve A,5, turbine stator, 6, turbine rotor, 7, drive key, 8, locating sleeve B,9, rectangular seal, 10, turbine shaft, 11, cylindrical roller bearing, 12, thrust ball bearing, 13, drop-out prevention ring B,14, adapter, 15, turbine drive shaft, 16, short joint, 17, flange drive shaft, 18, screw, 19, external gear, 20, nut, 21, lower housing, 22, O-ring seal A,23, internal gear housing, 24, composite bearing A,25, spline drive shaft, 26, radial bearing, 27, spline drive block, 28, impact drive shaft, 29, eccentric impact drive shaft, 30, drive pin A,31, drive pin B,32, composite bearing B,33, composite bearing C,34, drive shaft, 35, impact outer barrel, 36, guide bearing set, 37, guide sleeve, 38, bearing 39, O-ring seal B,40, O-ring seal C,41, lower joint.
Detailed Description
The invention is further described with reference to the accompanying drawings and examples:
referring to the drawings, a torsion impactor based on a turbine and a gear is characterized in that: the torsion impactor based on the turbine and the gear consists of a turbine assembly, an adapter 14, an impact assembly and a connecting device, wherein the lower end of the turbine assembly is connected with the adapter 14, and the adapter 14 is connected with a short connector 16 so as to be connected with the impact assembly; the turbine assembly comprises a turbine shell 1, an angular contact ball bearing 2, a drop-proof ring A3, a positioning sleeve A4, a turbine stator 5, a turbine rotor 6, a transmission key 7, a positioning sleeve B8, a rectangular sealing ring 9, a turbine shaft 10, a cylindrical roller bearing 11, a thrust ball bearing 12 and a drop-proof ring B13, wherein the turbine rotor 6, the turbine stator 5 and the positioning sleeve B8 are sequentially arranged on the turbine shaft 10 through the transmission key 7, the drop-proof ring A3 is arranged on the upper part of the turbine shaft 10, the two angular contact ball bearings 2 are reversely arranged on the turbine shell 1 and the upper part of the turbine shaft 10, the positioning sleeve A4 and the rectangular sealing ring 9 are arranged on the turbine shell 1 in advance, the turbine stator 5 is placed in the turbine shell 1 through spline fit, the cylindrical roller bearing 11, the thrust ball bearing 12 and the drop-proof ring B13 are sequentially arranged on the front step of the turbine shaft 10 from top to bottom, and the lower end of the turbine shaft 10 is in threaded connection with a turbine transmission shaft 15; the upper end of the adapter 14 is connected with the turbine shell 1, and the lower end is connected with the short joint 16; the impact assembly generates unidirectional torsional impact and comprises a flange transmission shaft 17, a screw 18, an external gear 19, a nut 20, a lower shell 21, an O-shaped sealing ring A22, an internal gear shell 23, a combined bearing A24, a spline transmission shaft 25, a radial bearing 26, a spline transmission block 27, an impact transmission shaft 28, an eccentric impact hammer 29, a transmission pin A30, a transmission pin B31, a transmission shaft 34, a combined bearing B32, a combined bearing C3329, an impact outer cylinder 35, a diversion bearing group 36, a diversion sleeve 37, an O-shaped sealing ring B39, a thrust bearing 38 and an O-shaped sealing ring C40; the upper part of the flange transmission shaft 17 is provided with a threaded hole, the flange transmission shaft is connected with the lower end of the turbine transmission shaft 15 through threads, the flange transmission shaft is driven by the turbine transmission shaft to rotate, the end face of the lower end of the flange transmission shaft 17 is provided with 3 uniformly distributed through holes along the circumferential direction, the upper end of the transmission shaft 34 is provided with 3 uniformly distributed through holes which are the same as the end face of the lower end of the flange transmission shaft, positioning is realized for the screw 18 and the nut 20, the shaft shoulder in the middle of the transmission shaft 34 is provided with two sealing ring grooves, an installation position is provided for an O-shaped sealing ring A22, the lower section of the transmission shaft is milled into a plane in the direction of 180 degrees, and the other 180 degrees is provided with a groove for installing a transmission pin; the center of the external gear 19 is provided with a through hole along the axial direction, a sliding bearing is installed and fixed in the through hole, a screw 18 axially penetrates through the sliding bearing, the external gear is installed between the flange transmission shaft 17 and the transmission shaft 34 and is fixed through the screw 18 and a nut 20; the upper end of the internal gear shell 23 is provided with teeth meshed with the external gear 19, the middle part of the internal gear shell is provided with a shaft shoulder, two fan-shaped flow passages are formed in the internal part in the 180-degree direction, and the lower part of the internal gear shell 23 is provided with two opposite grooves in the 180-degree direction; the upper end of the impact outer cylinder 35 is provided with 8 radial through holes in the circumferential direction, a flow passage is provided for drilling fluid to flow from the inside to the inner gear shell 23, the lower end is provided with two protruding transmission blocks opposite in the 180-degree direction in the circumferential direction, the protruding transmission blocks are matched with two grooves at the lower part of the inner gear shell 23, and the middle upper section in the impact outer cylinder 35 is provided with an internal spline structure; the spline transmission shaft 25 is provided with a through hole matched with the transmission shaft 34 along the axial direction, the upper end of the spline transmission shaft is provided with an external spline structure matched with the impact outer cylinder 35, and the lower end of the spline transmission shaft is also provided with an external spline structure; the spline transmission block 27 is internally provided with a built-in structure matched with the lower end of the spline transmission shaft 25, and the outer circumferential direction is provided with a circumferential step; the inside of the impact transmission shaft (28) is of a cavity structure, a step matched with the spline transmission block 27 is arranged in the circumferential direction of the upper end, a circumferential step serving as an impact seat is arranged in the middle of the impact transmission shaft, a straight thread is arranged at the lower end of the impact transmission shaft 28, and the end face of the lower end is of an inner hexagon structure, so that the impact transmission shaft is convenient to install and fix; the eccentric impact hammer 29 is of a hollow structure, a circumferential step which is matched with an impact transmission shaft and is used as an impact hammer is arranged in the outer circumferential direction, a transmission pin groove is formed in the eccentric impact hammer, and a sliding transmission pin groove is formed in the opposite direction in 180 degrees; the O-shaped sealing ring A22 is arranged in a sealing ring groove of the transmission shaft 34, the combined bearing A24 is arranged at the upper middle section of the transmission shaft 34, and the combined bearing B32 is arranged at the lower end of the transmission shaft, so that the axial and radial fixation of the whole structure is realized; the spline transmission shaft 25 is sleeved on the transmission shaft 34, the inside of the spline transmission block 27 is matched with the spline transmission shaft 25, and the outside of the spline transmission block is matched with the impact transmission shaft 28, so that torque transmission is realized; the driving pin A30 and the driving pin B31 are respectively arranged in two driving pin grooves of the driving shaft 34 to realize the fixation of the driving pins, the eccentric impact hammer 29 is sleeved outside the lower end of the driving shaft 34, the driving pin A30 is clamped in the driving pin groove of the driving shaft 34, and the driving pin B31 is clamped in the sliding driving pin groove of the driving shaft 34; the matched transmission shaft 34, the transmission pin A30, the transmission pin B31, the eccentric impact hammer 29 and the combined bearing B32 are all arranged in the cavity of the impact transmission shaft 28 to realize installation and fixation; the radial bearing 26 is sleeved on the spline transmission shaft 25 and is fixed with the middle section shaft shoulder of the impact outer cylinder 35 through the spline transmission shaft 25; the combined bearing C33 is sleeved at the lower end of the impact transmission shaft 28 and is fixed through a shaft shoulder at the lower end of the impact outer cylinder 35; the impact outer cylinder 35 is sleeved in the inner gear shell 23; the guide bearing group 36 is sleeved at the lower section of the inner gear shell 23, positioned through the shaft shoulder of the inner gear shell and simultaneously installed inside the lower shell 21; the upper end of the lower shell 21 is connected with the short joint 16 through threads, and the lower end of the lower shell is connected with the guide sleeve 37 through threads, so that the whole tool is assembled and fixed; the center of the lower joint 41 is provided with a threaded through hole to realize connection and fixation with an impact transmission shaft, and the end face is provided with 6 axial through holes to provide a liquid flow channel for drilling fluid; the thrust bearing 38 is installed between the guide bearing group 36 and the lower joint 41, and the O-ring is installed between the lower housing 21 and the lower joint 41 to realize end face sealing.
The torsion impactor based on the turbine and the gear is characterized in that: the number of the screws 18, the external gear 19 and the nuts 20 is 3.
The torsion impactor based on the turbine and the gear is characterized in that: the guide bearing group 36 can bear radial force and axial force, and the bearing is provided with 12 uniformly distributed axial through holes along the circumferential direction.
The torsion impactor based on the turbine and the gear is characterized in that: the radial bearings 26 are 2 mating installations.
The torsion impactor based on the turbine and the gear is characterized in that: the combined bearing A24, the combined bearing B32 and the combined bearing C33 are all needle roller and thrust combined ball bearings.
The torsion impactor based on the turbine and the gear is characterized in that: the upper half part of the guide sleeve 37 is of an outer cone structure.
The torsion impactor based on the turbine and the gear is characterized in that: the O-shaped sealing ring A22 and the O-shaped sealing ring B39 are of double-sealing structures, and the O-shaped sealing ring C40 is of an end face sealing structure.
During operation, high-pressure drilling fluid flows in from the turbine shell 1, flows to the flange transmission shaft 17 through the turbine stator 5, the turbine rotor 6, the turbine shaft 10 and the turbine transmission shaft 15, and most of the drilling fluid flows to the lower joint through the annular space between the flange transmission shaft 17 and the short joint 16 and the lower shell 21, and flows to the lower joint through the guide sleeve 37 after passing through the guide bearing group 36; a small portion of the drilling fluid passes through the annulus between the outer gear 19 and the inner gear housing 23 and then through the radial through-holes in the upper end of the impingement outer barrel 35 to the annulus between the inner gear housing 23 and the impingement outer barrel 35 to the lower joint. When the high-pressure drilling fluid enters the turbine shell 1 and flows through the turbine stator 5, the turbine rotor 6 is driven to rotate, and as the transmission key 7 is arranged between the turbine rotor 6 and the turbine shaft 10 to transmit torque, the turbine shaft 10 synchronously rotates along with the turbine rotor 6 and drives the turbine transmission shaft 15 to rotate, so that the flange transmission shaft 17 is driven to rotate; on one hand, the flange transmission shaft 17 drives the transmission shaft 34 to rotate, and the transmission shaft drives the eccentric impact hammer 29 to rotate at a high speed through the transmission pin A30 and the transmission pin B31; on the other hand, the flange transmission shaft 17 drives the external gear 19 to rotate, and the external gear 19 also rotates around the axis of the flange transmission shaft through a sliding bearing while revolving around the axis of the flange transmission shaft, is meshed with the internal gear shell 23, and transmits a lower rotating speed to the internal gear shell 23, and the internal gear shell drives the impact outer cylinder 35, so that the impact transmission shaft 28 is driven to rotate at a lower rotating speed through the spline transmission shaft 25 and the spline transmission block 27. Thereby forming a rotational speed difference with the eccentric impact hammer 29, generating an impact effect, and transmitting torsional vibration generated by the impact to the lower joint 41 through the impact drive shaft 28. As shown in fig. 9 to 12, after the eccentric impact hammer 29 collides with the impact transmission shaft 28, the eccentric impact hammer 29 moves eccentrically around the transmission pin a30 under the action of inertia force, the transmission pin B31 slides in the groove, the impact hammer separates from the collision surface of the impact seat under the interaction of the two, and the eccentric impact hammer 29 and the impact transmission shaft 28 continue to rotate in the same direction at different rotation speeds, so as to prepare for the next collision. In this way, the hammer face of the eccentric impact hammer 29 is constantly subjected to periodic circumferential impacts with the impact seat of the impact drive shaft 28, thereby forming high-frequency unidirectional circumferential impacts. The rotation and impact generated by the tool are transmitted to the drill bit through the lower connector 41, so that the purpose of providing power for the drill bit and enabling the drill bit to generate high-frequency unidirectional circumferential vibration is achieved, the rotation head is effectively protected, and the drilling efficiency is improved.
Claims (5)
1. Torsion impacter based on turbine and gear, its characterized in that: the torsion impactor based on the turbine and the gear consists of a turbine assembly, an adapter (14), an impact assembly and a lower connector (41), wherein the lower end of the turbine assembly is connected with the adapter (14), and the adapter (14) is connected with a short connector (16) so as to be connected with the impact assembly; the turbine assembly comprises a turbine shell (1), an angular contact ball bearing (2), a drop-proof ring A (3), a positioning sleeve A (4), a turbine stator (5), a turbine rotor (6), a transmission key (7), a positioning sleeve B (8), a rectangular sealing ring (9), a turbine shaft (10), a cylindrical roller bearing (11), a thrust ball bearing (12) and a drop-proof ring B (13), wherein the turbine rotor (6), the turbine stator (5) and the positioning sleeve B (8) are sequentially arranged on the turbine shaft (10) through the transmission key (7), the drop-proof ring A (3) is arranged on the upper part of the turbine shaft (10), the two angular contact ball bearings (2) are reversely arranged on the upper parts of the turbine shell (1) and the turbine shaft (10), the positioning sleeve A (4) and the rectangular sealing ring (9) are arranged on the turbine shell (1) in advance, the turbine stator (5) is placed in the turbine shell (1) through spline fit, the cylindrical roller bearing (11), the thrust ball bearing (12) and the drop-proof ring B (13) are sequentially arranged on the front of the turbine shaft (10) from top to bottom, and the front of the turbine shaft (10) is connected with the transmission shaft (15) in a threaded manner; the upper end of the adapter (14) is connected with the turbine shell (1), and the lower end is connected with the short joint (16); the impact assembly comprises a flange transmission shaft (17), a screw (18), an external gear (19), a nut (20), a lower shell (21), an O-shaped sealing ring A (22), an internal gear shell (23), a combined bearing A (24), a spline transmission shaft (25), a radial bearing (26), a spline transmission block (27), an impact transmission shaft (28), an eccentric impact hammer (29), a transmission pin A (30), a transmission pin B (31), a transmission shaft (34), a combined bearing B (32), a combined bearing C (33), an impact outer cylinder (35), a diversion bearing group (36), a diversion sleeve (37), an O-shaped sealing ring B (39), a thrust bearing (38) and an O-shaped sealing ring C (40); the upper part of the flange transmission shaft (17) is provided with a threaded hole which is connected with the lower end of the turbine transmission shaft (15) through threads, and the end surface of the lower end of the flange transmission shaft (17) is provided with 3 uniformly distributed through holes along the circumferential direction; the upper end of the transmission shaft (34) is provided with 3 uniformly distributed through holes which are the same as the end face of the lower end of the flange transmission shaft, the shaft shoulder in the middle of the transmission shaft (34) is provided with two sealing ring grooves, the lower section of the transmission shaft is milled into a plane in the direction of 180 degrees, and the other 180 degrees are provided with grooves for mounting transmission pins; the center of the external gear (19) is provided with a through hole along the axial direction, a sliding bearing is arranged and fixed in the through hole, the external gear is arranged between the flange transmission shaft (17) and the transmission shaft (34) and is fixed by a screw (18) and a nut (20); the upper end of the internal gear shell (23) is provided with teeth meshed with the external gear (19), the middle part of the internal gear shell is provided with a shaft shoulder, two fan-shaped flow passages are formed in the internal part in the direction of 180 degrees, and two opposite grooves are formed in the lower part of the internal gear shell (23) in the direction of 180 degrees; the upper end of the impact outer cylinder (35) is provided with 8 radial through holes in the circumferential direction, the lower end of the impact outer cylinder is provided with two protruding transmission blocks opposite in the 180-degree direction in the circumferential direction, the protruding transmission blocks are matched with two grooves at the lower part of the inner gear shell (23), and the middle upper section in the inner part of the impact outer cylinder (35) is provided with an inner spline structure; the spline transmission shaft (25) is provided with a through hole matched with the transmission shaft (34) along the axial direction, the upper end of the spline transmission shaft is provided with an external spline structure matched with the impact outer cylinder (35), and the lower end of the spline transmission shaft is also provided with an external spline structure; the spline transmission block (27) is internally provided with an internal spline structure matched with the lower end of the spline transmission shaft (25), and the outer circumferential direction is provided with a circumferential step; the inside of the impact transmission shaft (28) is of a cavity structure, a step matched with the spline transmission block (27) is arranged in the circumferential direction of the upper end, a circumferential step serving as an impact seat is arranged in the middle of the impact transmission shaft, a straight thread is arranged at the lower end of the impact transmission shaft (28), and the end face of the lower end is of an inner hexagon structure; the eccentric impact hammer (29) is of a hollow structure, a circumferential step which is matched with the impact transmission shaft and is used as an impact hammer is arranged in the circumferential direction, a transmission pin groove is formed in the eccentric impact hammer, and a sliding transmission pin groove is formed in the opposite direction in 180 degrees; the O-shaped sealing ring A (22) is arranged in a sealing ring groove of the transmission shaft (34), the combined bearing A (24) is arranged at the upper middle section of the transmission shaft (34), the combined bearing B (32) is arranged at the lower end of the transmission shaft, the spline transmission shaft (25) is sleeved on the transmission shaft (34), the inside of the spline transmission block (27) is matched with the spline transmission shaft (25), and the outside of the spline transmission block is matched with the impact transmission shaft (28); the driving pin A (30) and the driving pin B (31) are respectively arranged in two driving pin grooves of the driving shaft (34), the eccentric impact hammer (29) is sleeved outside the lower end of the driving shaft (34), the driving pin A (30) is clamped in the driving pin groove of the driving shaft (34), and the driving pin B (31) is clamped in the sliding driving pin groove of the driving shaft (34); the matched transmission shaft (34), the transmission pin A (30), the transmission pin B (31), the eccentric impact hammer (29) and the combined bearing B (32) are all arranged in a cavity of the impact transmission shaft (28); the two radial bearings (26) are arranged on the spline transmission shaft (25) in a matched manner, and are fixed with the middle section shaft shoulder of the impact outer cylinder (35) through the spline transmission shaft (25); the combined bearing C (33) is sleeved at the lower end of the impact transmission shaft (28) and is fixed through a shaft shoulder at the lower end of the impact outer cylinder (35); the impact outer cylinder (35) is sleeved in the inner gear shell (23); the guide bearing group (36) is sleeved at the lower section of the inner gear shell (23), positioned through the shaft shoulder of the inner gear shell and simultaneously installed in the lower shell (21); the upper end of the lower shell (21) is connected with the short joint (16) through threads, and the lower end of the lower shell is connected with the flow guiding sleeve (37) through threads, wherein the upper part of the flow guiding sleeve (37) is of an outer cone structure; the center of the lower joint (41) is provided with a threaded through hole, and the end face of the lower joint is provided with 6 axial through holes; the thrust bearing (38) is arranged between the diversion bearing group (36) and the lower joint (41), and the O-shaped sealing ring is arranged between the lower shell (21) and the lower joint (41).
2. The turbine and gear based torsional impactor of claim 1, wherein: the number of the screws (18), the number of the external gears (19) and the number of the nuts (20) are 3.
3. The turbine and gear based torsional impactor of claim 1, wherein: the guide bearing group (36) can bear radial force and axial force, and the bearing is provided with 12 uniformly distributed axial through holes along the circumferential direction.
4. The turbine and gear based torsional impactor of claim 1, wherein: the combined bearing A (24), the combined bearing B (32) and the combined bearing C (33) are needle roller and thrust combined ball bearings.
5. The turbine and gear based torsional impactor of claim 1, wherein: the O-shaped sealing ring A (22) and the O-shaped sealing ring B (39) are of double-sealing structures, and the O-shaped sealing ring C (40) is of an end face sealing structure.
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| CN108798503B (en) * | 2018-07-31 | 2023-08-08 | 西南石油大学 | Screw type circumferential impact drilling tool |
| CN109555471B (en) * | 2018-11-21 | 2020-10-27 | 中国石油大学(华东) | Rotary impact type torsion impact generating device and working method thereof |
| CN110259374B (en) * | 2019-07-26 | 2024-02-06 | 中国地质科学院勘探技术研究所 | High Wen Yingyan accelerating drilling tool |
| CN110529038A (en) * | 2019-08-22 | 2019-12-03 | 中国地质科学院勘探技术研究所 | A kind of anvil valve type hydraulic in-the-hole hammer |
| CN111364917B (en) * | 2020-04-03 | 2021-05-25 | 西南石油大学 | Drill bit for realizing axial impact function by utilizing turbine and gear |
| CN112593847A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Underground torsion impact speed-increasing tool |
| CN113006680B (en) * | 2021-03-19 | 2022-10-28 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
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