CN118793368B - A multifunctional screw drilling tool - Google Patents
A multifunctional screw drilling tool Download PDFInfo
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- CN118793368B CN118793368B CN202411282816.8A CN202411282816A CN118793368B CN 118793368 B CN118793368 B CN 118793368B CN 202411282816 A CN202411282816 A CN 202411282816A CN 118793368 B CN118793368 B CN 118793368B
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- 238000005553 drilling Methods 0.000 title claims abstract description 140
- 230000005540 biological transmission Effects 0.000 claims abstract description 70
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 238000004146 energy storage Methods 0.000 claims description 64
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000002002 slurry Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E21B4/02—Fluid rotary type drives
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
本发明公开了一种多功能螺杆钻具，属于石油钻具技术领域。包括由上而下依次螺接的旁通阀组件、防脱组件、马达组件、万向轴组件、传动轴组件和连接组件，连接组件上连通安装有转动组件，转动组件上滑动连接有调节组件，转动组件上开设有若干分流孔和若干换流孔，转动组件和调节组件之间形成分流通道，调节组件上连通开设有若干第一引流孔，调节组件上开设有与换流孔连通的排水通道。本发明螺杆钻具和钻头的进给速度大于钻挖速度时，钻头和传动柱相对转动管向上滑动，分流孔逐渐被传动柱封堵，使钻井液压力逐渐增大并冲击传动柱，促使传动柱下移，泥浆泵持续输送钻井液，实现冲击和旋转结合式钻井，提高钻井效率。
The invention discloses a multifunctional screw drill, which belongs to the technical field of oil drilling tools. It comprises a bypass valve assembly, an anti-slip assembly, a motor assembly, a universal shaft assembly, a transmission shaft assembly and a connecting assembly which are screwed in sequence from top to bottom, a rotating assembly is connected and installed on the connecting assembly, an adjusting assembly is slidably connected on the rotating assembly, a plurality of shunt holes and a plurality of flow conversion holes are provided on the rotating assembly, a shunt channel is formed between the rotating assembly and the adjusting assembly, a plurality of first drainage holes are connected and provided on the adjusting assembly, and a drainage channel connected to the flow conversion holes is provided on the adjusting assembly. When the feed speed of the screw drill and the drill bit of the invention is greater than the drilling speed, the drill bit and the transmission column slide upward relative to the rotating tube, the shunt hole is gradually blocked by the transmission column, the drilling fluid pressure gradually increases and impacts the transmission column, prompting the transmission column to move downward, the mud pump continuously delivers the drilling fluid, and the impact and rotation combined drilling is realized, thereby improving the drilling efficiency.
Description
Technical Field
The invention relates to the technical field of petroleum drilling tools, in particular to a multifunctional screw drilling tool.
Background
The screw drilling tool is a volumetric underground power motor taking drilling fluid as power. The drilling fluid pumped by the drilling pump drives the rotor of the motor to rotate by utilizing the pressure difference formed when the drilling fluid flows through the inlet and the outlet of the motor, and drives the drill bit to rotate through the universal shaft and the transmission shaft in the drilling fluid, so that hydraulic power formed by the pressure difference and the flow of the drilling fluid is converted into mechanical power formed by torque and rotating speed for driving the drill bit to rotate, and the downhole power drilling tool for driving the drill bit to rotate is formed.
When the common screw drilling tool drills hard stratum, most of the common screw drilling tool excavates through rotation of a drill bit, the drill bit is shallow in rock penetration depth, and therefore the efficiency of single-circle rock breaking of the drill bit is low, and the drilling efficiency is low. In view of this, we propose a multi-functional screw drilling tool.
Disclosure of Invention
The invention aims to provide a multifunctional screw drilling tool, which solves the technical problems of low efficiency of single-circle rock breaking and low drilling efficiency of a drill bit caused by shallower rock penetration depth of the drill bit in the prior art, and realizes the technical effects of impact drilling and improving the drilling efficiency.
The embodiment of the invention provides a multifunctional screw drilling tool, the device comprises a bypass valve assembly, an anti-drop assembly, a motor assembly, a universal shaft assembly, a transmission shaft assembly and a connecting assembly which are sequentially connected in a screwed manner from top to bottom, wherein the connecting assembly is communicated with a liquid outlet of the transmission shaft assembly;
the connecting component is communicated with and provided with a rotating component, the rotating component is connected with an adjusting component in a sliding way, and the adjusting component is communicated with the rotating component;
The rotating assembly is provided with a plurality of diversion holes and a plurality of exchange holes, a diversion channel is formed between the rotating assembly and the adjusting assembly, and the diversion holes and the exchange holes are communicated with the diversion channel;
The adjusting component is communicated with a plurality of first drainage holes, and the first drainage holes are communicated with the diversion holes;
and the adjusting component is provided with a drainage channel communicated with the flow changing hole and used for conveying drilling fluid into the drill bit.
As an alternative scheme of the technical scheme of the invention, the connecting assembly comprises a connecting pipe and an elastic piece, wherein the connecting pipe is locked on the transmission shaft assembly through screw connection and is communicated with a liquid outlet of the transmission shaft assembly;
The connecting pipe is internally and fixedly provided with a fixed plate, the connecting pipe is fixedly provided with a supporting ring, the inner side of the connecting pipe is connected with an energy storage box in a sliding manner, the inner side of the energy storage box is open, one end of the elastic piece is fixedly connected with the fixed plate, the other end of the elastic piece is fixedly connected with the energy storage box, and the top of the energy storage box is fixedly provided with a plurality of lower locking blocks;
The rotating assembly comprises a rotating pipe, the rotating pipe is rotationally connected with the connecting pipe and communicated with the connecting pipe, and the energy storage box is movably connected with the rotating pipe;
A top plate is fixedly arranged on the rotating pipe and is abutted against the supporting ring;
a plurality of upper locking blocks are fixedly arranged below the top plate, and the upper locking blocks and the lower locking blocks are in staggered insertion limiting;
and the rotating pipe is provided with a plurality of energy storage holes, and the energy storage holes are communicated with the energy storage box.
As an alternative scheme of the technical scheme of the invention, the bottom of the upper locking block and the top of the lower locking block are arc-shaped, and the contact surface of the upper locking block and the lower locking block after opposite insertion is parallel to the axis of the connecting pipe.
Through adopting above-mentioned technical scheme, lower locking piece can be automatic with last locking piece to inserting, reduces the grafting degree of difficulty, goes up locking piece and down locking piece to after inserting, and the contact surface of two is the vertical face, can effectually transmit rotation thrust to the rotation pipe when guaranteeing the connecting pipe and rotate.
As an alternative scheme of the technical scheme of the invention, the connecting pipe is provided with a plurality of first drain holes, one side of the energy storage box, which is far away from the opening, is provided with a plurality of second drain holes, the second drain holes are communicated with the corresponding first drain holes and are used for guiding and draining drilling fluid in the energy storage box, and the height of the second drain holes is larger than that of the first drain holes.
As an alternative to the technical solution of the present invention, the energy storage hole is located at an upper side of the diversion hole, the drainage channel is located at a lower side of the diversion hole, the fixing plate and the energy storage tank are both located in the diversion channel, the fixing plate is located between the energy storage hole and the diversion hole, and the fixing plate is used for separating the diversion channel.
As an alternative of the technical scheme of the invention, the adjusting component comprises a transmission column, the outer diameter of the transmission column is equal to the inner diameter of the rotating pipe, and the transmission column is in sliding connection with the rotating pipe;
the transmission column is fixedly provided with an adjusting pipe, a plurality of first drainage holes are communicated with the adjusting pipe, and the drainage channel is arranged on the transmission column;
the bottom fixed mounting of transmission post has the connecting block, the connecting block is used for the fixed of drill bit.
As an alternative of the technical scheme of the invention, the drainage channel comprises a plurality of second drainage holes and a plurality of diversion slots, the second drainage holes are communicated with the diversion slots, and the second drainage holes are communicated with the corresponding exchange holes.
As an alternative to the technical solution of the present invention, the height of the first drainage hole is greater than the height of the diversion hole, and the height of the second drainage hole is greater than the height of the diversion hole.
By adopting the technical scheme, when the transmission column is subjected to resistance upward movement, the continuous flowing time of the drilling fluid can be prolonged, so that the drilling fluid injection pressure relief is carried out.
As an alternative scheme of the technical scheme of the invention, one end of the transmission column, which is close to the connecting block, is provided with a plurality of cleaning holes communicated with the diversion slot holes.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. The slurry pump continuously provides and conveys drilling fluid so as to drive the drill bit to continuously excavate, meanwhile, the drilling equipment downwards applies a feeding pressure to the screw drilling tool and the drill bit, when the feeding speed is higher than the drilling speed, the drill bit and the transmission column slide upwards relative to the rotating pipe, the diversion hole is gradually plugged by the transmission column along with the upward movement of the transmission column, the drilling fluid pressure is further gradually increased and impacts the transmission column, the transmission column is promoted to move downwards, and the drilling equipment continuously applies pressure to cooperate with the slurry pump to continuously convey the drilling fluid, so that the transmission column is formed to drive the drill bit to perform impact drilling, impact and rotation combined drilling is realized, and the drilling efficiency is improved.
2. When the feeding of the drill bit is blocked, drilling fluid enters the energy storage box from the energy storage hole to store energy, the energy storage box is subjected to the continuous pressure of the drilling fluid to compress the elastic piece, the energy storage box slides downwards under the guide of the inner wall of the connecting pipe through the first guide block, and then the lower locking block is separated from the upper locking block, and the connecting pipe and the rotating pipe are released from synchronous rotation due to the separation limit of the lower locking block and the upper locking block, so that the motor assembly, the universal shaft assembly, the transmission shaft assembly and the connecting pipe are in an idle state, the torque transmitted by the drill bit is unloaded, the motor assembly and other components are prevented from being damaged by excessive torque, the screw drilling tool is effectively protected, and the service life of the screw drilling tool is prolonged.
3. According to the invention, as the pressure of the drilling fluid is continuously increased, the pressure supply of the slurry pump is gradually increased until the pressure reaches the set value, and the slurry pump stops inputting the drilling fluid to the screw drilling tool, so that the pressure of the drilling fluid is monitored.
4. When the drilling fluid stops conveying, the continuous pressure born by the elastic pieces disappears, the elastic pieces drive the energy storage box to move upwards to reset, the lower locking piece is automatically spliced and limited with the upper locking piece again, the rotary pipe can rotate along with the connecting pipe again when the drilling fluid is driven next time, and the second water discharge hole is communicated with the corresponding first water discharge hole after the energy storage box is reset, so that the drilling fluid in the energy storage box is discharged into a well annulus.
Drawings
FIG. 1 is a cross-sectional view of a multi-functional progressive cavity drilling tool according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram showing the connection structure of a cardan shaft assembly and a transmission shaft assembly of a multifunctional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram showing a connecting structure of a drill bit of a multifunctional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the multifunctional screw drilling tool shown in FIG. 3A according to a preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view of a connection assembly of a multi-functional progressive cavity drilling tool according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view showing the connection structure of a connection assembly and a rotation assembly of a multifunctional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 7 is a schematic illustration showing the insertion of an upper lock block and a lower lock block of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 8 is a schematic diagram of the drilling fluid flow direction of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 9 is an enlarged view of the structure of the multifunctional screw drilling tool shown in FIG. 3B according to a preferred embodiment of the present invention;
FIG. 10 is a schematic view of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 11 is an enlarged view of the structure of the multifunctional screw drilling tool shown in FIG. 1 according to a preferred embodiment of the present invention;
FIG. 12 is an enlarged view of the structure of the multifunctional screw drilling tool shown at D in FIG. 1 according to a preferred embodiment of the present invention;
FIG. 13 is an enlarged view of the section E of FIG. 1 of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 14 is an enlarged view of the section F of FIG. 1 of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
FIG. 15 is an enlarged view of the portion G of FIG. 1 of a multi-functional screw drilling tool according to a preferred embodiment of the present invention;
Fig. 16 is an enlarged view of the structure H in fig. 2 of a multifunctional screw drilling tool according to a preferred embodiment of the present invention.
The reference numerals in the drawings indicate that the valve assembly comprises a bypass valve assembly 1, a drop-proof assembly 3, a motor assembly 4, a universal shaft assembly 5, a transmission shaft assembly 6, a connecting assembly 7, a rotating assembly 8, a regulating assembly 9, a diversion hole 10, a diversion hole 11, a diversion channel 12, a first diversion hole 13, a second diversion hole 13, a diversion slot 14, a diversion slot 15, a drill bit 16, a rotating ring 17, a spring pin 18, a third water draining hole 19, a water spraying hole 61, a connecting pipe 62, a conical screw table 63, a water draining hole 64, a first water draining hole 65, a supporting ring 66, a bearing 67, a penetrating hole 68, a first guiding groove 69, an energy storage box 71, a rotating pipe 72, a compression ring 73, a top plate 74, an upper locking block 75, an energy storage hole 76, a second guiding groove 81, a transmission post 82, a regulating pipe 83, a connecting block 84, a conical screw groove 85, a limiting groove 86, a limiting hole 87, a cleaning hole 611, a fixed plate 612, a first elastic piece 691, a second locking block 693 and a lower locking block 692.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7 and fig. 11 to 16, the embodiment discloses a multifunctional screw drilling tool, which comprises a bypass valve assembly 1, an anti-drop assembly 2, a motor assembly 3, a universal shaft assembly 4, a transmission shaft assembly 5 and a connecting assembly 6 which are sequentially connected in a threaded manner from top to bottom, wherein the structures, the interconnection and the communication modes of the bypass valve assembly 1, the anti-drop assembly 2, the motor assembly 3, the universal shaft assembly 4 and the transmission shaft assembly 5 are the prior art, and are not repeated here.
The connecting assembly 6 comprises a connecting pipe 61, a fixing plate 611 is fixedly arranged in the connecting pipe 61, an elastic piece 612 is arranged on the upper side of the fixing plate 611, a conical thread table 62 is fixedly arranged on the connecting pipe 61, the connecting pipe 61 is locked with a transmission shaft assembly 5 through the conical thread table 62, the locking effect of the connecting assembly 6 and the transmission shaft assembly 5 can be effectively increased through the conical thread, the connecting pipe 61 can be effectively driven, the falling risk is reduced, a water inlet hole 63 communicated with the inside of the connecting pipe 61 is formed in the conical thread table 62, after the connecting pipe 61 is locked with the transmission shaft assembly 5, the water inlet hole 63 is communicated with a water outlet of the transmission shaft assembly 5, a plurality of first water draining holes 64 are formed in the connecting pipe 61, a supporting ring 65 is fixedly arranged on the connecting pipe 61, a bearing 66 is arranged in the connecting pipe 61 in a matched mode, the top of an outer ring of the bearing 66 abuts against the bottom of the conical thread table 62, the bottom of the outer ring of the bearing 66 is supported on the supporting ring 65, a through hole 67 is formed in the connecting pipe 61, and the inner diameter of the through hole 67 is smaller than that of the connecting pipe 61.
The first guide way 68 has been seted up in the connecting pipe 61, coupling assembling 6 still includes energy storage case 69, the inboard (the less side of internal diameter) of energy storage case 69 is uncovered, the one end and the fixed plate 611 fixed connection of elastic component 612, the bottom fixed connection of the other end and energy storage case 69, fixed mounting has a plurality of first guide blocks 691 on the energy storage case 69, first guide block 691 and first guide way 68 sliding fit, the top fixed mounting of energy storage case 69 has a plurality of lower locking pieces 692, a plurality of second wash port 693 have been seted up to the one side that the energy storage case 69 kept away from the uncovered, second wash port 693 communicates with corresponding first wash port 64, be used for discharging the drilling fluid in the energy storage case 69, the height of second wash port 693 is higher than the height of first wash port 64.
It should be noted that, in order to prevent the drilling fluid and the mud in the borehole annulus from flowing back into the first drain hole 64, a filter plate is fixedly installed at the outlet position of the first drain hole 64 to prevent the mud from blocking the first drain hole 64 in a countercurrent manner, and meanwhile, a countercurrent valve is arranged in the first drain hole 64 and is positioned between the filter plate and the energy storage box 69, and the countercurrent valve is arranged to effectively ensure that the drilling fluid can only flow into the borehole annulus from the energy storage box 69.
Referring to fig. 3 and 5-9, the rotating assembly 7 is installed in the inner ring cooperation of the bearing 66, the rotating assembly 7 comprises a rotating pipe 71, the connecting pipe 61 and the axis of the rotating pipe 71 are collinear, the rotating pipe 71 is sleeved and matched on the inner side of the energy storage box 69, movable connection of the rotating pipe 71 and the energy storage box 69 is achieved, the rotating pipe 71 is in rotating fit with the fixed plate 611, the rotating pipe 71 rotates in the penetrating hole 67, a pressing ring 72 and a top plate 73 are fixedly installed on the rotating pipe 71, the pressing ring 72 is abutted with the top of the inner ring of the bearing 66, the top plate 73 is abutted with the bottom of the inner ring of the bearing 66, the rotating pipe 71 is in rotating connection with the connecting pipe 61 through the bearing 66, the bottom of the top plate 73 is supported on the supporting ring 65 and can rotate relative to the supporting ring 65, a plurality of upper locking blocks 74 are fixedly installed below the top plate 73, the upper locking blocks 74 are distributed in an array, the upper locking blocks 74 and the lower locking blocks 692 are distributed alternatively, the upper locking blocks 74 and the lower locking blocks 692 are used for keeping the rotating pipe 71 to rotate synchronously along with the energy storage box 69 and the connecting pipe 61, the bottom of the upper locking blocks 74 and the top of the lower locking blocks 692 are all in a mode, accordingly the upper locking blocks 74 and the lower locking blocks 692 can be automatically connected with the upper locking blocks and the lower locking blocks 74 are in a mode, the upper face of the connecting pipe 75 and the upper connecting pipe 75 can be in parallel to the connecting pipe and the connecting pipe 75, and the upper connecting pipe is in parallel to the connecting pipe and the upper connecting pipe 75 is in the connecting joint face between the connecting pipe and the upper connecting pipe and the connecting pipe 75.
When the feeding of the drill bit 15 is blocked, drilling fluid enters the energy storage box 69 from the energy storage hole 75 to store energy, the energy storage box 69 is compressed under the continuous pressure of the drilling fluid, the elastic piece 612 is compressed, the energy storage box 69 slides downwards in the inner wall guide of the connecting pipe 61 through the first guide block 691, the lower locking block 692 is separated from the upper locking block 74, and the connecting pipe 61 and the rotating pipe 71 are synchronously rotated due to the separation limit of the lower locking block 692 and the upper locking block 74, so that the motor assembly 3, the universal shaft assembly 4, the transmission shaft assembly 5 and the connecting pipe 61 are in an idle state, the torsional force transmitted by the drill bit 15 is unloaded, the motor assembly 3 and the like are prevented from being damaged by excessive torque, the screw drilling tool is effectively protected, and the service life of the screw drilling tool is prolonged. Along with the continuous increase of the pressure of the drilling fluid, the pressure supply of the slurry pump is gradually increased until the set value is reached, and the slurry pump stops inputting the drilling fluid to the screw drilling tool, so that the monitoring of the pressure of the drilling fluid is realized.
When the drilling fluid stops being conveyed, the continuous pressure born by the elastic pieces 612 disappears, the elastic pieces 612 drive the energy storage box 69 to move upwards to reset, the lower locking piece 692 is automatically inserted with the upper locking piece 74 again to limit, the rotating pipe 71 can rotate along with the connecting pipe 61 again when the drilling fluid is driven next time, and after the energy storage box 69 is reset, the second water drain holes 693 are communicated with the corresponding first water drain holes 64, so that the drilling fluid in the energy storage box 69 is discharged into the annular space of the well.
The rotation pipe 71 is provided with a plurality of diversion holes 9 and a diversion hole 10, the diversion hole 9 is positioned below the energy storage hole 75, the diversion hole 10 is positioned below the diversion hole 9, a diversion channel 11 is formed between the rotation pipe 71 and the connecting pipe 61, the diversion hole 9 and the diversion hole 10 are both communicated with the diversion channel 11, the fixing plate 611 is positioned in the diversion channel 11 and is positioned at the upper side of the diversion hole 9, the fixing plate 611 divides the diversion channel 11 into an upper side and a lower side, drilling fluid flowing into the diversion channel 11 from the diversion hole 9 is blocked by the fixing plate 611, and therefore, the drilling fluid flows from the lower part of the diversion channel 11 and flows out from the diversion hole 10.
Referring to fig. 4, 8 and 9, a plurality of second guide grooves 76 are formed in the inner side of the rotating tube 71, the screw drilling tool further comprises an adjusting component 8, the adjusting component 8 comprises a transmission column 81, the outer diameter of the transmission column 81 is equal to the inner diameter of the rotating tube 71, the transmission column 81 is collinear with the axis of the rotating tube 71, a plurality of second guide blocks are fixedly mounted on the transmission column 81 and are in sliding fit with the second guide grooves 76, so that the transmission column 81 slides in the rotating tube 71, an adjusting tube 82 is fixedly mounted on the transmission column 81, the outer diameter of the adjusting tube 82 is equal to the inner diameter of the rotating tube 71, the adjusting tube 82 is communicated with the inside of the rotating tube 71, a plurality of first drainage holes 12 are formed in the adjusting tube 82, the height of the first drainage holes 12 is higher than that of the diversion holes 9, a plurality of second drainage holes 13 and the diversion slots 14 are formed in the transmission column 81, the plurality of second drainage holes 13 are communicated with the diversion slots 14, the height of the second drainage holes 13 is higher than that of the corresponding diversion holes 10, and the second drainage holes 13 are communicated with the corresponding diversion slots 10. Drilling fluid flows into the corresponding second diversion holes 13 from the diversion holes 10 and flows into the drill bit 15 from the diversion slots 14 and is sprayed out, so that circulating flow of the drilling fluid is realized, the height of the first diversion holes 12 is higher than that of the diversion holes 9, the height of the second diversion holes 13 is higher than that of the diversion holes 10, and when the transmission column 81 is subjected to resistance upward movement, the continuous flow time of the drilling fluid can be prolonged, so that the drilling fluid is sprayed and decompressed.
The bottom fixed mounting of drive post 81 has connecting block 83, set up awl thread groove 84 on the connecting block 83, drill bit 15 passes through awl thread groove 84 and connecting block 83 screw thread locking is fixed, the connecting block 83 has certain interval with the bottom of swivelling joint pipe 71, thereby guarantee that connecting block 83 can be adjusted in certain within range, a plurality of clearance holes 87 with the guide slot 14 intercommunication have been seted up to the one end that drive post 81 is close to connecting block 83, when the silt heap is stifled in the bottom of drive post 81, drilling fluid is from the quick blowout in clearance hole 87, thereby automatic clear up silt, reduce silt and pile up the risk, install filter and the reverse flow valve the same in clearance hole 87 and the first wash port 64, avoid mud to block up or countercurrent.
In the drilling process, the slurry pump continuously provides the conveying drilling fluid to drive the drill bit 15 to continuously excavate, meanwhile, the drilling equipment also downwards provides feeding pressure for the screw drilling tool and the drill bit 15, therefore, the drill bit 15 and the transmission column 81 slide upwards relative to the rotating tube 71, the shunt hole 9 is gradually plugged by the transmission column 81 along with the upward movement of the transmission column 81, the drilling fluid pressure is further gradually increased and impacts the transmission column 81, the transmission column 81 is caused to move downwards, the drilling equipment continuously presses and is matched with the slurry pump to continuously convey the drilling fluid, and therefore, the transmission column 81 is formed to drive the drill bit 15 to perform impact drilling, impact and rotation multifunctional combined drilling is realized, and the drilling efficiency is improved.
Referring to fig. 8 and 10, a plurality of limiting grooves 85 are formed in the connecting block 83, limiting holes 86 communicated with the limiting grooves 85 are formed in the connecting block 83, a rotating ring 16 is rotatably connected to the drill bit 15, a plurality of spring pins 17 are fixedly installed on the rotating ring 16, when the drill bit 15 is inserted into the conical thread grooves 84 and in threaded connection with the connecting block 83, the spring pins 17 are compressed and inserted into the limiting grooves 85, when the drill bit 15 rotates, the rotating ring 16 and the drill bit 15 rotate relatively due to the fact that the spring pins 17 are limited in the limiting grooves 85, when the drill bit 15 is completely locked, the spring pins 17 are inserted into the limiting holes 86, further limiting fixation is carried out on the drill bit 15, stability of connection of the drill bit 15 is improved, after the drill bit 15 is connected, a blocking block is fixedly installed at an opening portion of the limiting holes 86, the problem that mud pushes against the spring pins 17 from the limiting holes 86 is avoided, failure risk of the spring pins 17 is reduced, third water holes 18 are formed in the drill bit 15, a plurality of water holes 19 are formed in a communicating mode, the third water holes 19 are obliquely downwards, the drill bit 19 and the drill bit 15 are distributed alternately, when the drill bit 15 is excavated, drilling mud and mud are continuously mixed with water spraying fluid is discharged from the drilling hole 15, drilling fluid is continuously, drilling water spraying effect is reduced, and drilling mud and water spraying effect is convenient to mix well drilling hole drilling effect is improved.
When the multifunctional screw drilling tool disclosed by the embodiment of the invention is used, drilling fluid converts the pressure energy of liquid into kinetic energy through the motor component 3 and transmits the kinetic energy to the connecting component 6 through the universal shaft component 4 and the transmission shaft component 5, the connecting component 6 drives the rotating component 7 to rotate through the first guide block 691, the energy storage box 69, the lower locking block 692 and the upper locking block 74, the rotating component 7 drives the adjusting component 8 to rotate through the second guide block on the transmission column 81, and the adjusting component 8 drives the drill bit 15 to rotate, so that the rotary drilling of the drill bit 15 is realized;
After the drilling fluid drives the rotor of the motor assembly 3 to rotate, the drilling fluid enters the water inlet hole 63 of the connecting assembly 6 through the universal shaft assembly 4 and the transmission shaft assembly 5, enters the adjusting pipe 82 from the water inlet hole 63 and pushes the transmission column 81 to move downwards, and flows into the drill bit 15 through the adjusting pipe 82, the first drainage hole 12, the diversion hole 9, the diversion channel 11, the diversion hole 10, the second drainage hole 13 and the diversion slot 14 and is sprayed out, so that the drilling fluid and slurry are mixed;
When the mud pump continuously conveys drilling fluid, the drilling equipment provides feeding pressure drop force for the screw drilling tool, so that the drill bit 15 is contacted with the bottom of the drilling well, and when the drill bit 15 fails to drill effectively, the drill bit 15 drives the transmission column 81 to slide upwards relative to the rotary pipe 71, so that the effective through flow port diameter of the shunt hole 9 is reduced, the outflow of the drilling fluid is reduced, the mud pump still continuously conveys the drilling fluid to the interior of the screw drilling tool, so that the drilling fluid pressure in the screw drilling tool is increased, the transmission column 81 is continuously impacted, and the transmission column 81 is forced to drive the drill bit 15 to move downwards to drill, so that continuous impact drilling is realized;
When the continuous feeding pressure drop force and the drilling fluid impact force cannot drive the drill bit 15 to drill, the diversion hole 9 is blocked by the transmission column 81, the supply pressure of the slurry pump is gradually increased, the first diversion hole 12 is communicated with the energy storage hole 75, the drilling fluid enters the energy storage box 69 from the energy storage hole 75 to store energy, the energy storage box 69 is compressed by the elastic piece 612 under the continuous pressure action of the drilling fluid, the energy storage box 69 slides downwards under the guide of the inner wall of the connecting pipe 61 through the first guide block 691, the lower lock block 692 is separated from the upper lock block 74, the connecting pipe 61 and the rotating pipe 71 are released from synchronous rotation, and the motor assembly 3, the universal shaft assembly 4, the transmission shaft assembly 5 and the connecting pipe 61 are in idle states, so that the feeding torsion transmitted by the drill bit 15 is unloaded, and the motor assembly 3 is prevented from being damaged by excessive torque;
Along with the continuous increase of the pressure of the drilling fluid, the supply pressure of the slurry pump is increased to a set value, the slurry pump stops inputting the drilling fluid to the screw drilling tool, the continuous pressure born by a plurality of elastic pieces 612 disappears, the elastic pieces 612 drive the energy storage box 69 to move upwards to reset, the lower locking piece 692 is automatically inserted with the upper locking piece 74 again to limit, the rotating pipe 71 can rotate along with the connecting pipe 61 again when being driven next time, and after the energy storage box 69 is reset, the second drain hole 693 is communicated with the corresponding first drain hole 64, so that the drilling fluid in the energy storage box 69 is discharged into the annular space of a well hole.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The multifunctional screw drilling tool is characterized by comprising a bypass valve assembly (1), an anti-falling assembly (2), a motor assembly (3), a universal shaft assembly (4), a transmission shaft assembly (5) and a connecting assembly (6), wherein the bypass valve assembly, the anti-falling assembly (2), the motor assembly, the universal shaft assembly (4), the transmission shaft assembly (5) and the connecting assembly (6) are sequentially connected in a screwed mode from top to bottom, and the connecting assembly (6) is communicated with a liquid outlet of the transmission shaft assembly (5);
The connecting component (6) is communicated with and provided with a rotating component (7), the rotating component (7) is connected with an adjusting component (8) in a sliding manner, and the adjusting component (8) is communicated with the rotating component (7);
a plurality of diversion holes (9) and a plurality of exchange holes (10) are formed in the rotating assembly (7), a diversion channel (11) is formed between the rotating assembly (7) and the adjusting assembly (8), and the diversion holes (9) and the exchange holes (10) are communicated with the diversion channel (11);
a plurality of first drainage holes (12) are formed in the adjusting assembly (8) in a communicating mode, and the first drainage holes (12) are communicated with the diversion holes (9);
the adjusting component (8) is provided with a drainage channel communicated with the flow changing hole (10) and used for conveying drilling fluid into the drill bit (15);
The connecting assembly (6) comprises a connecting pipe (61) and an elastic piece (612), a fixed plate (611) is fixedly installed in the connecting pipe (61), a supporting ring (65) is fixedly installed on the connecting pipe (61), an energy storage box (69) is connected to the inner side of the connecting pipe (61) in a sliding mode, the inner side of the energy storage box (69) is open, one end of the elastic piece (612) is fixedly connected with the fixed plate (611), the other end of the elastic piece is fixedly connected with the energy storage box (69), and a plurality of lower locking blocks (692) are fixedly installed at the top of the energy storage box (69);
The rotating assembly (7) comprises a rotating pipe (71), the rotating pipe (71) is in rotating connection with the connecting pipe (61) and communicated with the connecting pipe, and the energy storage box (69) is movably connected with the rotating pipe (71);
a top plate (73) is fixedly arranged on the rotating pipe (71), and the top plate (73) is abutted on the supporting ring (65);
A plurality of upper locking blocks (74) are fixedly arranged below the top plate (73), and the upper locking blocks (74) and the lower locking blocks (692) are in staggered insertion limiting;
A plurality of energy storage holes (75) are formed in the rotating pipe (71), and the energy storage holes (75) are communicated with the energy storage box (69);
A plurality of first drain holes (64) are formed in the connecting pipe (61), a plurality of second drain holes (693) are formed in one side, far away from the opening, of the energy storage box (69), and the second drain holes (693) are communicated with the corresponding first drain holes (64) and are used for guiding and draining drilling fluid in the energy storage box (69);
the energy storage hole (75) is positioned on the upper side of the diversion hole (9), the drainage channel is positioned on the lower side of the diversion hole (9), the fixing plate (611) and the energy storage box (69) are positioned in the diversion channel (11), the fixing plate (611) is positioned between the energy storage hole (75) and the diversion hole (9), and the fixing plate (611) is used for separating the diversion channel (11);
the adjusting assembly (8) comprises a transmission column (81), the outer diameter of the transmission column (81) is equal to the inner diameter of the rotating tube (71), and the transmission column (81) is in sliding connection with the rotating tube (71);
the transmission column (81) is fixedly provided with an adjusting pipe (82), a plurality of first drainage holes (12) are communicated with each other and are formed in the adjusting pipe (82), and the drainage channel is formed in the transmission column (81).
2. The multifunctional screw drilling tool according to claim 1, wherein the connecting pipe (61) is locked on the transmission shaft assembly (5) through a screw connection, and the connecting pipe (61) is communicated with a liquid outlet of the transmission shaft assembly (5).
3. A multi-functional screw drill according to claim 2, characterized in that the bottom of the upper lock block (74) and the top of the lower lock block (692) are arc-shaped, and the contact surface of the upper lock block (74) and the lower lock block (692) after the insertion is parallel to the axis of the connecting pipe (61).
4. A multi-functional screw drill according to claim 2, characterized in that the height of the second drain hole (693) is greater than the height of the first drain hole (64).
5. A multi-functional screw drilling tool according to claim 2, wherein a connection block (83) is fixedly mounted at the bottom of the transmission column (81), and the connection block (83) is used for fixing a drill bit (15).
6. A multi-functional screw drilling tool according to any one of claims 1-5, wherein the drainage channel comprises a plurality of second drainage holes (13) and a drainage slot (14), wherein the plurality of second drainage holes (13) are communicated with the drainage slot (14), and wherein the plurality of second drainage holes (13) are communicated with corresponding exchange holes (10).
7. A multi-functional screw drilling tool according to claim 6, wherein the first drainage hole (12) has a height greater than the height of the diversion hole (9) and the second drainage hole (13) has a height greater than the height of the diversion hole (10).
8. The multifunctional screw drilling tool according to claim 5, wherein a plurality of cleaning holes (87) communicated with the diversion slot holes (14) are formed in one end of the transmission column (81) close to the connecting block (83).
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| CN202411282816.8A CN118793368B (en) | 2024-09-13 | 2024-09-13 | A multifunctional screw drilling tool |
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| CN202411282816.8A CN118793368B (en) | 2024-09-13 | 2024-09-13 | A multifunctional screw drilling tool |
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| CN106703701A (en) * | 2017-01-20 | 2017-05-24 | 中国石油大学(华东) | Pulse impact producing mechanism and center differential pressure drill comprising same |
| CN107605404B (en) * | 2017-10-17 | 2019-02-05 | 中国石油大学(华东) | A drilling speed-increasing device capable of generating the double action of hydraulic pulse and shock vibration |
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| CN107542405A (en) * | 2017-09-28 | 2018-01-05 | 山西风雷钻具有限公司 | Waterpower pulse helicoid hydraulic motor |
| CN111636815A (en) * | 2020-05-28 | 2020-09-08 | 中石化江钻石油机械有限公司 | Downhole power drilling tool with unfreezing device |
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