CN111911080A - Laser-mechanical combined rock breaking power drilling tool - Google Patents
Laser-mechanical combined rock breaking power drilling tool Download PDFInfo
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- CN111911080A CN111911080A CN202010769421.6A CN202010769421A CN111911080A CN 111911080 A CN111911080 A CN 111911080A CN 202010769421 A CN202010769421 A CN 202010769421A CN 111911080 A CN111911080 A CN 111911080A
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- 238000005553 drilling Methods 0.000 title claims abstract description 43
- 239000011435 rock Substances 0.000 title claims abstract description 39
- 238000007493 shaping process Methods 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 210000002445 nipple Anatomy 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 29
- 238000000034 method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 13
- 230000018109 developmental process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
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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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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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
- E21B7/00—Special methods or apparatus for drilling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a laser-mechanical combined rock breaking power drilling tool which mainly comprises an oil submersible motor, a laser beam short section, a laser head, a beam shaping lens group and a laser drill bit. An inner channel and an outer channel are arranged in the submersible motor, and gas/clean water and slurry are respectively introduced into the submersible motor; the lower part of the submersible motor is provided with a rotor flange plate which is connected with a laser beam short joint. The laser beam short section is provided with an inner channel and an outer channel, the outer channel transmits slurry, and the inner channel transmits gas/clean water. Further, the inner channel is provided with a laser head and a light beam shaping lens group, and under the cooling and cleaning of gas/clean water, laser is generated and shaped into a strip-shaped output. The laser drill bit is driven by the submersible motor to rotate and is provided with a light beam channel and a slurry flow channel. The invention combines the laser mechanical rock breaking and leads in gas/clean water to ensure that the laser effectively acts on the surface of the rock, and further, the gas/clean water cooperates with the mud to clean the well bottom together, thereby providing a method for using the laser rock breaking technology in mud drilling.
Description
Technical Field
The invention relates to a laser-mechanical combined rock breaking power drilling tool, in particular to the field of petroleum drilling for deep and complex formations difficult to drill.
Background
As a country with large energy demand in China, the main battlefield of oil and gas exploration and development is gradually transferred to a deep and complex stratum which is difficult to drill, the drilling difficulty is multiplied, and in the current view, the conventional rotary drilling increases the mechanical drilling speed by means of high drilling pressure, high torque and high rotation speed, so that the requirements of green, environment-friendly, safe and efficient rock breaking indexes and low-cost oil and gas development in China are difficult to meet.
Laser drilling technology is a new technology which has emerged in recent years, and researches show that: the laser beam is directly acted on the rock to damage and damage the rock, the strength of the rock is reduced, the drillability is improved, and if the laser beam is further combined with a mechanical method to break the rock, the drilling speed can be increased in a complex and difficult-to-drill stratum, and the drilling cost is saved. Laser drilling is combined with a mechanical drilling mode, and the development direction of the laser drilling technology is the current development direction.
In the field of oil drilling, mud drilling can effectively balance drilling pressure, prevent well collapse and plan to make lost circulation, is a safer drilling mode and is the main flow direction of current drilling. The laser combined mechanical drilling can reduce the rock breaking difficulty, reduce the abrasion of a drill bit and save the rock breaking energy, is a relatively efficient rock breaking mode and is a development direction of future drilling. Therefore, if the future novel laser combined mechanical drilling can be applied to the current mud drilling condition, the safety and the high efficiency of drilling can be realized together, and the method has very important significance.
However, in the mud drilling process, the laser optical element is used as a precision instrument, and is suitable for the working condition environment with high temperature and high pollution in the pit; how the laser beam overcomes the mud effectively acts on the surface of the well bottom; how to match the coupling design of the laser optical element with the mechanical rock breaking tool is a difficult point of current research.
Disclosure of Invention
Aiming at the problems, the invention provides a laser-mechanical combined rock breaking power drilling tool. The submersible motor is considered to be arranged underground, and the traditional rotary table drilling is replaced by a mode that the submersible motor drives the drill bit to rotate to break rocks, so that the transmission of cables is effectively guaranteed, and the vibration of drilling is reduced. Furthermore, clear water/gas is taken as a transmission medium of the laser beam, is isolated from the mud sub-channel and is used for cleaning the well bottom together, so that the cleanness of the laser optical element is ensured, and a new method is provided for the laser rock breaking technology for mud drilling.
The invention is based on the current mud drilling, and the mechanical rock breaking tool is matched with the laser optical element to carry out structural coupling design, thereby having important significance for developing the laser-mechanical combined drilling technology and realizing the safety and high efficiency of mud drilling.
The invention adopts the following technical scheme:
a laser-mechanical combined rock breaking power drilling tool mainly comprises an oil submersible motor (1), a laser beam short joint (2), a laser head (7), a beam shaping mirror group (8) and a laser drill bit (3); the method is characterized in that: the upper part of the submersible motor (1) is provided with a threaded joint (11), the end face of the threaded joint (11) is provided with a sealing groove (12), and the submersible motor can be sealed by metal to realize the isolation of clear water/gas and slurry; two channels are arranged in the submersible motor (1), the inner channel (4) is hollow and penetrates through the center of the submersible motor (1), and the section of the outer channel (5) is designed into two sectors; a rotor flange (6) is arranged at the lower part of the submersible motor (1), the rotor flange (6) is connected in an inner channel (4) of the submersible motor (1), and an angular contact bearing (13) is arranged at the connecting part to ensure the rotary motion of the rotor flange (6); further, rotor flange dish (6) inside is equipped with two passageways, and interior passageway (4) cavity, outer passageway (5) cross-section are established to 4 fan-shaped, and rotor flange dish (6) outer end is equipped with bolt hole (14) of 6 equipartitions, connects fixed laser beam nipple joint (2).
The upper end of the laser beam short section (2) is provided with 6 bolt holes (14) which are matched with the bolt holes (14) of the rotor flange plate (6), and the upper end face of the laser beam short section (2) is provided with a sealing groove (12) which is matched with the sealing groove (12) of the rotor flange plate (6); an inner channel and an outer channel are arranged inside the laser beam short section (2) and are matched with the inner channel and the outer channel of the rotor flange plate (6); the cross sections of outer channels (5) of the laser beam short joints (2) are designed into 2 sectors and are used for transmitting slurry; the inner channel (4) of the laser beam short section (2) is hollow and is designed to be step-shaped, so that the diameter of the upper end of the inner channel (4) of the laser beam short section (2) is smaller than that of the lower end;
furthermore, an optical cable (17) is placed at the upper end of the inner channel (4), and fine threads (15) are arranged on the inner wall of the lower end of the inner channel (4) and used for fixedly placing the laser head (7) and the beam shaping mirror group (8); furthermore, the lower end of the laser beam short section (2) is provided with a threaded female buckle (16) for connecting the laser drill bit (3) and realizing the synchronous rotation of the laser beam short section (2) and the laser drill bit (3).
Laser head (7) upper portion is equipped with optical cable (17), makes laser head (7) produce circular laser beam, and the external diameter of laser head (7) lower part equals the inner wall diameter of light beam plastic mirror group (8), and further, the outer wall of laser head (7) lower part is attacked fine screw thread (15), matches with fine screw thread (15) of light beam plastic mirror group (8) inner wall.
The beam shaping mirror group (8) is in a short cylinder shape, fine threads (15) are arranged on the inner wall and the outer wall of the beam shaping mirror group, and the fine threads (15) on the inner wall are matched with the fine threads (15) on the lower part of the laser head (7); the fine thread (15) on the outer wall is matched with the fine thread (15) at the lower end of the laser beam short section (2); furthermore, 3 uniformly distributed fan-shaped through holes (18) are arranged between the fine threads (15) of the light beam shaping mirror group (8), so that gas/clean water can be conveniently transmitted downwards through the inner channel (4); furthermore, a shaping lens (19) is arranged in the light beam shaping mirror group (8) to shape the circular laser beam emitted by the laser head (7) into a strip shape.
A step groove (20) is formed in the center of the laser drill bit (3), wherein the upper end of the step groove (20) is large, and the lower end of the step groove is small and is used for accommodating a light beam shaping mirror group (8); the upper end surface of the step groove (20) is provided with a sealing groove (12), and the bottom surface of the step groove (20) is communicated with the light beam channel (9); the light beam channel (9) is a trapezoidal opening, penetrates through the laser drill bit (3), and can allow laser beams and gas/clean water to be emitted from the light beam channel (9); furthermore, a slurry flow channel (10) is arranged outside the laser drill bit (3), and finally, slurry is sprayed out from a nozzle (21) of the laser drill bit (3) and mixed with gas/clean water.
The invention has the beneficial effects that:
1. the submersible motor (1) is arranged underground, two channels are arranged inside the submersible motor, the inner channel (4) is hollow, the cross section of the outer channel (5) is designed into two fan shapes, and the submersible motor is beneficial to realizing the isolation and conveying of clear water/gas and slurry. The submersible motor (1) drives the laser beam short joint (2) and the laser drill bit (3) to synchronously rotate through the rotor flange (6) to break rocks, and the mode reduces drilling vibration and effectively ensures the transmission of the optical cable (17).
2. Inside two inside, outer passageways that are equipped with of laser beam nipple joint (2), wherein, set up laser head (7) and fixed the laying including in passageway (4) of beam shaping mirror group (8), gaseous/clear water is in passageway (4) circulation, helps the cooling of laser head (7) and the clean and tidy of plastic lens (19).
3. The laser head (7) emits a circular laser beam, the circular laser beam is shaped into a strip shape by using the beam shaping lens group (8), and the laser beam is transmitted and protected by means of a gas/clear water medium, so that the laser beam is enabled to act on the surface of a well bottom, and the acting area and the damage effect of the laser beam are increased; furthermore, the gas/clean water is matched with mud to clean the well bottom, so that the rock carrying effect is enhanced.
4. A mechanical rock breaking tool and a laser optical element structure of the laser-mechanical combined rock breaking power drilling tool are designed in a matched mode, so that two media of gas, clean water and mud can be isolated and transmitted, and a new method is provided for applying a laser rock breaking technology to mud drilling.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a laser-mechanical combined rock breaking power drill according to the invention;
fig. 2 is a schematic structural diagram of the submersible motor of the invention;
FIG. 3 is a cross-sectional view of FIG. 2 of the present invention;
FIG. 4 is an assembly schematic diagram of a laser beam short section, a beam shaping mirror group and a laser head of the invention;
FIG. 5 is an assembly diagram of the laser head and the beam shaping mirror set according to the present invention;
FIG. 6 is a schematic view of a laser drill according to the present invention.
Shown in the figure: the method comprises the following steps of 1-submersible motor, 2-laser beam short section, 3-laser drill bit, 4-inner channel, 5-outer channel, 6-rotor flange plate, 7-laser head, 8-beam shaping lens group, 9-beam channel, 10-slurry flow channel, 11-threaded joint, 12-sealing groove, 13-angular contact bearing, 14-bolt hole, 15-fine thread, 16-threaded female buckle, 17-optical cable, 18-fan-shaped through hole, 19-shaping lens, 20-step groove, 21-nozzle and 22-cutting tooth.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Based on the described embodiments of the present invention, "upper", "lower", "outer", "inner", and the like used in the present disclosure are only used to indicate relative positional relationships, and when the absolute position of the described object is changed, the relative positional relationships may also be changed accordingly.
The invention is further illustrated with reference to the following figures and examples:
fig. 1, 2 and 3 show that a laser-mechanical combined rock-breaking power drilling tool mainly comprises an oil-submersible motor (1), a laser beam short section (2), a laser head (7), a beam shaping mirror group (8) and a laser drill bit (3); the method is characterized in that: the upper part of the submersible motor (1) is provided with a threaded joint (11), the matching end surface of the threaded joint (11) is provided with a sealing groove (12), and the submersible motor can be sealed by metal to realize the isolation of clear water/gas and slurry; two channels are arranged in the submersible motor (1), wherein the inner channel (4) is hollow and penetrates through the center of the submersible motor (1) and is used for conveying clear water/gas, and the section of the outer channel (5) is designed into two sectors and is used for conveying slurry; a rotor flange (6) is arranged at the lower part of the submersible motor (1), the rotor flange (6) is connected in an inner channel (4) of the submersible motor (1), and an angular contact bearing (13) is arranged at the connecting part to ensure the rotary motion of the rotor flange (6); furthermore, two channels are arranged inside the rotor flange plate (6), and the inner channel (4) is hollow and used for conveying clean water/gas; the section of the outer channel (5) is designed into 4 sectors, so that the slurry is effectively conveyed in the relative rotation process of the rotor flange (6) and the upper part of the submersible motor (1); furthermore, the outer end of the rotor flange (6) is provided with 6 uniformly distributed bolt holes (14) for connecting and fixing the laser beam short section (2).
As shown in fig. 4, the upper end of the laser beam nipple (2) is provided with a bolt hole (14) matched with the rotor flange (6), and the upper end face of the laser beam nipple (2) is provided with a sealing groove (12) matched with the sealing groove (12) of the rotor flange (6); an inner channel and an outer channel are arranged inside the laser beam short section (2) and are matched with the inner channel and the outer channel of the rotor flange plate (6); the cross section of an outer channel (5) of the laser beam short section (2) is designed into two sectors and is used for transmitting slurry; the inner channel (4) of the laser beam short section (2) is hollow and is designed to be step-shaped, so that the diameter of the upper end of the inner channel (4) of the laser beam short section (2) is smaller than that of the lower end; wherein, an optical cable (17) is arranged at the upper end of the inner channel (4), and the inner wall of the lower end of the inner channel (4) is provided with fine threads (15) for fixedly placing a laser head (7) and a beam shaping mirror group (8); furthermore, the lower end of the laser beam short section (2) is provided with a threaded female buckle (16) for connecting the laser drill bit (3) and realizing the synchronous rotation of the laser beam short section (2) and the laser drill bit (3).
As shown in fig. 5, an optical cable (17) is arranged at the upper part of the laser head (7) to enable the laser head (7) to generate a circular laser beam, the outer diameter of the lower part of the laser head (7) is equal to the diameter of the inner wall of the light beam shaping mirror group (8), and further, a fine thread (15) is tapped on the outer wall of the lower part of the laser head (7) and matched with the fine thread (15) on the inner wall of the light beam shaping mirror group (8); the beam shaping mirror group (8) is in a short cylinder shape, fine threads (15) are arranged on the inner wall and the outer wall of the beam shaping mirror group, and the fine threads (15) on the inner wall are matched with the fine threads (15) on the lower part of the laser head (7); the fine thread (15) on the outer wall is matched with the fine thread (15) at the lower end of the channel (4) in the laser beam short section (2); furthermore, 3 uniformly distributed fan-shaped through holes (18) are arranged between the fine threads (15) of the light beam shaping mirror group (8), so that gas/clean water can be conveniently transmitted downwards through the inner channel (4); furthermore, a shaping lens (19) is arranged in the light beam shaping mirror group (8) to shape the circular laser beam emitted by the laser head (7) into a strip shape. Further, referring to fig. 1, the laser beam passes through a beam channel (9) of the laser drill bit (3), and by means of the flowing and transparent characteristics of gas/clear water, the obstruction of mud at the bottom of the well can be broken through, and finally the laser beam and the gas/clear water act on the surface of rock at the bottom of the well together to damage and damage the rock.
As shown in fig. 6, a step groove (20) is formed in the center of the laser drill (3), wherein the upper end of the step groove (20) is large, and the lower end of the step groove (20) is small, so as to accommodate the light beam shaping mirror group (8), and referring to fig. 1, the side surface and the bottom surface of the step groove (20) are ensured not to be in contact with the outer surface of the light beam shaping mirror group (8), so that the whole shaping mirror (19) can be effectively cleaned by circulating gas/clean water, and a protective vortex is; furthermore, a sealing groove (12) is formed in the upper end face of the step groove (20) of the laser drill bit (3), and the step groove can be sealed by metal to realize the isolation of clear water/gas and slurry; the bottom surface of the stepped groove (20) of the laser drill bit (3) is communicated with the light beam channel (9), wherein the light beam channel (9) is a trapezoidal opening and penetrates through the laser drill bit (3), so that laser beams and gas/clean water can be emitted from the light beam channel (9), and an environment capable of being effectively transmitted to the surface of a rock is created for laser; furthermore, a slurry flow channel (10) is arranged inside the laser drill bit (3), and finally, slurry is sprayed out from a nozzle (21) of the laser drill bit (3) and mixed with gas/clean water, so that the rock carrying effect is enhanced, and the slurry returns to the ground.
Furthermore, the working principle of the invention is further supplemented by combining the attached drawings:
a laser-mechanical combined rock breaking power drilling tool is characterized in that in a normal drilling process, gas/clean water is transmitted to the underground in a coordinated mode with a cable, an optical cable and slurry in an isolated mode from the ground; the gas/clear water mixed cable and the optical cable (17) enter an inner channel (4) of the submersible motor (1), and the cable supplies power to the submersible motor (1) to enable a rotor flange plate (6) of the submersible motor (1) to mechanically rotate; meanwhile, the tail end of the optical cable (17) is connected with a laser head (7) of the laser beam nipple (2), so that the laser head (7) emits circular laser, and the circular laser passes through the beam shaping mirror group (8) to shape the laser beam into a strip shape.
Further, researches show that the laser beam with special wave band frequency can be effectively transmitted in gas/clear water, and the laser beam can effectively act on the surface of the rock at the bottom of the well by virtue of the flowing and transparent characteristics of the gas/clear water through a beam channel (9) of the laser drill bit (3) to damage the rock.
Furthermore, a rotor flange (6) of the submersible motor (1) rotates to drive a laser beam short section (2) connected with the rotor flange, and the laser beam short section (2) drives a laser head (7), a beam shaping mirror group (8) and a laser drill bit (3) to synchronously rotate. So far, the shaped strip laser can synchronously rotate along with the laser drill bit (3) to damage and destroy the surface of the rock. Subsequently, the cutting teeth (22) perform further rotary scraping action on the laser irradiation area to realize laser-mechanical combined drilling in a mud environment.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The utility model provides a rock breaking power drilling tool is united to laser-machinery, mainly comprises latent oily motor (1), laser beam nipple joint (2), laser head (7), beam shaping mirror group (8), laser drill bit (3), its characterized in that: the upper part of the submersible motor (1) is provided with a threaded joint (11), and the end face of the threaded joint (11) is provided with a sealing groove (12); two channels are arranged in the submersible motor (1), the inner channel (4) is hollow and penetrates through the center of the submersible motor (1), and the section of the outer channel (5) is designed into two sectors; a rotor flange (6) is arranged at the lower part of the submersible motor (1), the rotor flange (6) is connected in an inner channel (4) of the submersible motor (1), and an angular contact bearing (13) is arranged at the connecting part; furthermore, two channels are arranged inside the rotor flange (6), and the inner channel (4) is hollow; the section of the outer channel (5) is set to be 4 sectors; furthermore, the outer end of the rotor flange (6) is provided with 6 uniformly distributed bolt holes (14) for connecting and fixing the laser beam short section (2).
2. The laser-mechanical combined rock breaking power drill according to claim 1, characterized in that: the upper end of the laser beam short section (2) is provided with 6 bolt holes (14), and the upper end face of the laser beam short section (2) is provided with a sealing groove (12); an inner channel and an outer channel are arranged inside the laser beam short section (2), wherein the section of the outer channel (5) of the laser beam short section (2) is designed to be 2 sectors, and the inner channel (4) of the laser beam short section (2) is hollow and is designed to be step-shaped; furthermore, the inner wall of the lower end of the inner channel (4) is provided with fine threads (15), and the lower end of the laser beam nipple (2) is provided with a threaded female buckle (16) which is connected with a laser drill bit (3).
3. The laser-mechanical combined rock breaking power drill according to claim 1, characterized in that: the beam shaping mirror group (8) is in a short cylinder shape, fine threads (15) are arranged on the inner wall and the outer wall of the beam shaping mirror group, and the fine threads (15) on the inner wall are matched with the fine threads (15) on the lower part of the laser head (7); the fine thread (15) on the outer wall is matched with the fine thread (15) at the lower end of the laser beam short section (2); furthermore, 3 uniformly distributed fan-shaped through holes (18) are arranged between the fine threads (15) of the light beam shaping mirror group (8); furthermore, a shaping lens (19) is arranged inside the light beam shaping mirror group (8).
4. The laser-mechanical combined rock breaking power drill according to claim 1, characterized in that: a step groove (20) is formed in the center of the laser drill bit (3), and the upper end of the step groove (20) is large while the lower end is small; the upper end face of the step groove (20) is provided with a sealing groove (12), the bottom face of the step groove (20) is communicated with a light beam channel (9), and the light beam channel (9) is a trapezoidal opening and penetrates through the laser drill bit (3); furthermore, a slurry flow channel (10) is arranged inside the laser drill bit (3).
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| CN202010769421.6A CN111911080B (en) | 2020-08-03 | 2020-08-03 | Laser-mechanical combined rock breaking power drilling tool |
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| CN202010769421.6A CN111911080B (en) | 2020-08-03 | 2020-08-03 | Laser-mechanical combined rock breaking power drilling tool |
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| CN111911080B CN111911080B (en) | 2022-04-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653447A (en) * | 2021-06-17 | 2021-11-16 | 西南石油大学 | Laser-mechanical drill bit for efficient rock breaking by combining laser and machine |
| CN115142794A (en) * | 2022-06-24 | 2022-10-04 | 山东大学 | Rock breaking test system adopting laser mechanical combined drilling |
| CN116556839A (en) * | 2023-04-24 | 2023-08-08 | 山东大学 | Laser drilling machine and method for continuous and rapid drilling |
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