CN111980578A - Light path transmission device for laser-mechanical rock breaking test - Google Patents
Light path transmission device for laser-mechanical rock breaking test Download PDFInfo
- Publication number
- CN111980578A CN111980578A CN202010910096.0A CN202010910096A CN111980578A CN 111980578 A CN111980578 A CN 111980578A CN 202010910096 A CN202010910096 A CN 202010910096A CN 111980578 A CN111980578 A CN 111980578A
- Authority
- CN
- China
- Prior art keywords
- laser
- drill rod
- rock breaking
- transmission device
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
Abstract
The invention discloses an optical path transmission device for a laser-mechanical rock breaking test, which comprises a laser generator and a laser head, wherein the laser head is fixed through a fixing frame, the fixing frame is connected with a drill rod through a flange plate, an axially through laser beam channel is arranged at the center inside the drill rod, a beam shaping device is fixed in the lower part of the drill rod through an adjusting device, and the bottom of the drill rod is connected with a drill bit through threads; two axial airflow channels are arranged in the upper portion of the drill rod, two air vents are arranged in the middle and at the bottom of the drill rod respectively, the two air vents in the middle are communicated with the axial airflow channels respectively, the two air vents on the same side are connected through an air vent pipeline, and the two air vents on the bottom are communicated with an internal light path channel of the drill bit. According to the optical path transmission device, the optical path channel and the air path channel are designed in the drill rod, so that the separation of the optical path and the air path is realized, dust and debris carried by air flow are prevented from entering the drill rod, and an optical lens group in a test device can be effectively protected.
Description
Technical Field
The invention belongs to the technical field of rock breaking equipment, and particularly relates to a light path transmission device for a laser-mechanical rock breaking test.
Background
With the further development of national economy, the demand for oil and gas resources is continuously increased, and because of long-term exploitation, oil and gas resources in shallow strata which are already discovered in part of regions are fully exploited, so that the development of deep oil and gas resources becomes a necessary trend. However, in the development process of deep wells and ultra-deep wells, due to the compact stratum, high hardness and strong abrasiveness, the traditional mechanical drilling mode has low drilling speed, short service life of a drill bit, long drilling period and high mining cost, and greatly hinders the pace of developing and utilizing deep oil and gas resources, so that the research on the method for efficiently crushing hard rock is of great significance.
In recent years, laser technology is gradually developed from rock cutting of a low-power laser to a drilling and rock breaking stage of a high-power laser, the rock is changed into easily-removed chips or magma by thermal fragmentation, thermal melting and thermal gasification of the rock surface when the high-power laser and the rock are subjected to thermal action, and the chips or the magma of the rock are removed by air flow or other auxiliary tools. Compared with the traditional mechanical rock breaking, the laser rock breaking has the unique advantages of high drilling speed, capability of drilling hard rock, improvement of well wall environment and the like. The laser-mechanical combined rock breaking technology is a new leading-edge technology capable of realizing efficient rock breaking by utilizing a mechanical drill bit after rock is impacted, damaged and thermally damaged by laser to generate pre-breaking on the rock, so that the internal stress of the rock is released to a certain extent, the strength of the rock is reduced, and the drillability of the rock is improved. The laser-mechanical combined rock breaking technology can integrate the advantages of the laser rock breaking technology and the mechanical rock breaking technology and overcome the inherent defects of the laser rock breaking technology and the mechanical rock breaking technology, so that the laser-mechanical combined rock breaking technology is the main development direction of the current laser drilling technology.
In the laser-mechanical combined rock breaking process, a light path channel and a gas path channel need to be designed reasonably to convey laser beams and high-speed airflow for the laser-mechanical combined rock breaking. If the optical lens group in the test device is exposed in the air, dust carried by high-speed airflow and debris generated by rock breaking are inevitably contacted with the optical lens group and attached to the lens surface, so that the heat of the lens surface is increased rapidly, and finally the optical lens group is burnt. In order to meet the requirement of laser-mechanical combined rock breaking, the optical lens group must be in a sealed and clean environment to avoid the lens group from directly contacting with high-speed airflow and debris. Therefore, the technical scheme of optical path transmission of the laser-mechanical rock breaking test device is provided, the separation of an optical path and an air path is realized, the optical lens group in the drill rod is in a sealed and clean environment, the optical lens group in the test device can be effectively protected, and the maintenance requirement of a test tool is lowered.
Disclosure of Invention
The invention aims to provide a light path transmission device for a laser-mechanical rock breaking test, which realizes the separation of a light path and a gas path through a light path channel and the gas path channel designed in a drill rod and improves the drilling efficiency.
The invention adopts the technical scheme that the light path transmission device for the laser-mechanical rock breaking test comprises a laser generator, wherein the laser generator is connected with the top end of a laser head through an optical fiber, the laser head is fixed through a fixing frame, the bottom of the fixing frame is connected with a drill rod through a flange plate, an axially through laser beam channel is arranged at the center inside the drill rod, an adjusting device is fixed inside the lower part of the drill rod, a beam shaping device is fixed inside the adjusting device, and the bottom of the drill rod is connected with a drill bit provided with the light path channel through threads; two axial airflow channels which are radially symmetrical are arranged in the upper portion of the drill rod, two radial air vents which are axially symmetrical are arranged in the middle portion and the bottom portion of the drill rod respectively, the two radial air vents which are located in the middle portion are communicated with the axial airflow channels respectively, the two radial air vents which are located on the same side are connected through vertically arranged air vent pipelines, and the two radial air vents which are located on the bottom portion are communicated with the internal light path channel of the drill bit.
The present invention is also characterized in that,
and ventilating devices are fixed on two sides of the top of the drill rod through rolling bearings.
Two radial airflow air inlets which are axially symmetrical are arranged at the top end of the drill rod, and the two radial airflow air inlets are opposite to the air inlet of the ventilation device.
The adjusting device is connected with the beam shaping device through threads, and the adjusting device can be fixed and can horizontally adjust the position of the beam shaping device so as to enable the laser beam to coincide with the center of a lens in the beam shaping device.
A window mirror is arranged at the joint of the interior of the drill rod and the light beam shaping device.
The invention has the beneficial effects that:
in the light path transmission device, the light path channel and the gas path channel are designed in the drill rod, so that the light path and the gas path are separated, dust and debris carried by gas flow are prevented from entering the drill rod, an optical lens group in the drill rod is in a sealed and clean environment, the optical lens group in a test device can be effectively protected, and the maintenance requirement of a test tool is reduced; in addition, the required bit pressure is lower, so that the abrasion of a drilling tool is reduced, the service life of a drill bit is prolonged, higher drilling speed is generated, and the drilling efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of an optical path transmission device for a laser-mechanical rock breaking test according to the present invention;
FIG. 2 is a cross-sectional view taken in the direction A-A of the upper portion of the drill rod of FIG. 1;
fig. 3 is a cross-sectional view in the direction of B-B in the middle of the drill rod of fig. 1.
In the figure: 1. the laser beam drilling device comprises a laser generator, 2 optical fibers, 3 laser heads, 4 fixing frames, 5 flange plates, 6 ventilation devices, 7 drill rods, 8 laser beam channels, 9 axial airflow channels, 10 window mirrors, 11 ventilation pipelines, 12 adjusting devices, 13 beam shaping devices, 14 ventilation ports and 15 drill bits.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses an optical path transmission device for a laser-mechanical rock breaking test, which mainly comprises a laser generator 1, an optical fiber 2, a laser head 3, a fixed frame 4, a flange plate 5, a ventilation device 6, a drill rod 7, a light beam channel 8, an axial air flow channel 9, a window mirror 10, a ventilation pipeline 11, an adjusting device 12, a light beam shaping device 13, a ventilation port 14 and a drill bit 15 as shown in figures 1 and 2. The laser generator 1 is connected with the top end of a laser head 3 through an optical fiber 2, a fixing frame 4 is fixed at the bottom end of the laser head 3, the fixing frame 4 provided with an adjusting screw rod is used for fixing the laser head 3, and the bottom of the fixing frame 4 is connected with a drill rod 7 through a flange 5;
an axially through laser beam channel 8 is arranged at the center inside the drill rod 7, as shown in fig. 3, an adjusting device 12 is fixed inside the lower part of the drill rod 7, the inside of the adjusting device 12 is connected with a beam shaping device 13 through threads, the position of the beam shaping device 13 can be fixed and horizontally adjusted, and the laser beam is ensured to coincide with the center of a lens in the beam shaping device 13; the adjusting device 12 and the beam shaping device 13 are two adjustable thread structures; the bottom of the drill rod 7 is connected with a drill bit 15 provided with a light path channel through threads; the laser beam channel 8 passes through the beam shaping device 13 and enters the drill bit 15;
a window mirror 10 is arranged at the joint of the interior of the drill rod 7 and the beam shaping device 13; the top end of the drill rod 7 is provided with two radial airflow air inlets which are axially symmetrical and are opposite to the air inlet of the ventilating device 6 arranged at the top end of the drill rod 7, two axial airflow channels 9 which are radially symmetrical are arranged in the upper part of the drill rod 7, and the tops of the axial airflow channels 9 are welded with the ventilating device 6;
two radial air vents 14 which are axially symmetrical are respectively arranged at the middle part and the bottom part of the drill rod 7, the two radial air vents 14 positioned at the middle part are respectively communicated with the axial airflow channel 9, the two radial air vents 14 positioned at the same side are connected through an air vent pipeline 11 which is vertically arranged, and the two radial air vents 14 positioned at the bottom part are communicated with an internal light path channel of the drill bit 15;
the invention relates to a light path transmission device for a laser-mechanical rock breaking test, which has the specific working principle that:
when a rock breaking test is carried out, laser beams emitted by a laser head 3 positioned at the top end of the whole device enter a beam shaping device 13 through a beam channel 8 in a drill rod 7, are shaped by the beam shaping device 13 and then irradiate the surface of a rock along an internal channel of a drill bit 15, and the shaped laser beams are rectangular light spots with the length of the radius of the drill bit or rectangular light spots with the length of the diameter of the drill bit; inside the high-speed draught got into the drilling rod by drilling rod 7 top air inlet, got into 15 inner passages of drill bit through inside axial airflow channel 9 of pole wall and vent line 11, the high-speed draught played the effect of carrying the detritus, and the light path and the gas circuit of whole device are separated completely, and inside optical lens group is in airtight clean environment not with high-speed draught direct contact, avoids inside optical lens group to be burnt out, reduces test tool's maintenance requirement.
Claims (5)
1. The light path transmission device for the laser-mechanical rock breaking test is characterized by comprising a laser generator (1), wherein the laser generator (1) is connected with the top end of a laser head (3) through an optical fiber (2), a fixing frame (4) is fixed at the bottom end of the laser head (3), the bottom of the fixing frame (4) is connected with a drill rod (7) through a flange plate (5), an axially through laser beam channel (8) is arranged at the center inside the drill rod (7), an adjusting device (12) is fixed in the lower part of the drill rod (7), a light beam shaping device (13) is fixed in the adjusting device (12), and the bottom of the drill rod (7) is connected with a drill bit (15) provided with a light path channel through threads; be equipped with two axial air current passageway (9) of radial symmetry in drilling rod (7) upper portion, drilling rod (7) middle part and bottom are equipped with two radial air vent (14) of axial symmetry respectively, are located two at the middle part radial air vent (14) communicate with each other with axial air current passageway (9) respectively, are located two with one side radial air vent (14) are all connected through vent line (11) of vertical setting, are located two of bottom radial air vent (14) communicate with each other with drill bit (15) inside light path passageway.
2. The optical path transmission device for the laser-mechanical rock breaking test is characterized in that the ventilating devices (6) are fixed on two sides of the top of the drill rod (7) through rolling bearings.
3. The optical path transmission device for the laser-mechanical rock breaking test is characterized in that two radial air flow air inlets which are axially symmetrical are formed in the top end of the drill rod (7), and the two radial air flow air inlets are opposite to the air inlet of the air breather device (6).
4. The optical path transmission device for the laser-mechanical rock breaking test is characterized in that the adjusting device (12) is in threaded connection with the beam shaping device (13), and the adjusting device (12) can be fixed and can horizontally adjust the position of the beam shaping device (13) so that the laser beam coincides with the center of a lens in the beam shaping device (13).
5. The optical path transmission device for the laser-mechanical rock breaking test is characterized in that a window mirror (10) is arranged at the joint of the interior of the drill rod (7) and the beam shaping device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910096.0A CN111980578A (en) | 2020-09-02 | 2020-09-02 | Light path transmission device for laser-mechanical rock breaking test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910096.0A CN111980578A (en) | 2020-09-02 | 2020-09-02 | Light path transmission device for laser-mechanical rock breaking test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111980578A true CN111980578A (en) | 2020-11-24 |
Family
ID=73448648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010910096.0A Pending CN111980578A (en) | 2020-09-02 | 2020-09-02 | Light path transmission device for laser-mechanical rock breaking test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111980578A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009005271A (en) * | 2007-06-25 | 2009-01-08 | Nec Corp | Optical communication device and optical communication method |
| CN104499943A (en) * | 2014-12-12 | 2015-04-08 | 中国石油天然气股份有限公司 | Laser drill, laser drilling tool and well drilling rock breaking method |
| CN207063909U (en) * | 2017-03-22 | 2018-03-02 | 中国矿业大学(北京) | A kind of laser rock fragmenting device for drilling well |
| CN109162640A (en) * | 2018-10-13 | 2019-01-08 | 西南石油大学 | A kind of laser-water jet combination drilling device |
| CN110094158A (en) * | 2019-05-05 | 2019-08-06 | 西南石油大学 | A kind of laser engine combination drilling device |
| CN110108543A (en) * | 2019-05-05 | 2019-08-09 | 西南石油大学 | A kind of drill string of coupled laser broken rock experimental provision |
| CN110847811A (en) * | 2019-12-06 | 2020-02-28 | 西南石油大学 | Phosgene mixing barrel device for laser-mechanical rock breaking |
| CN110905413A (en) * | 2019-12-11 | 2020-03-24 | 西南石油大学 | Laser-mechanical combined rock breaking system under mud drilling environment |
-
2020
- 2020-09-02 CN CN202010910096.0A patent/CN111980578A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009005271A (en) * | 2007-06-25 | 2009-01-08 | Nec Corp | Optical communication device and optical communication method |
| CN104499943A (en) * | 2014-12-12 | 2015-04-08 | 中国石油天然气股份有限公司 | Laser drill, laser drilling tool and well drilling rock breaking method |
| CN207063909U (en) * | 2017-03-22 | 2018-03-02 | 中国矿业大学(北京) | A kind of laser rock fragmenting device for drilling well |
| CN109162640A (en) * | 2018-10-13 | 2019-01-08 | 西南石油大学 | A kind of laser-water jet combination drilling device |
| CN110094158A (en) * | 2019-05-05 | 2019-08-06 | 西南石油大学 | A kind of laser engine combination drilling device |
| CN110108543A (en) * | 2019-05-05 | 2019-08-09 | 西南石油大学 | A kind of drill string of coupled laser broken rock experimental provision |
| CN110847811A (en) * | 2019-12-06 | 2020-02-28 | 西南石油大学 | Phosgene mixing barrel device for laser-mechanical rock breaking |
| CN110905413A (en) * | 2019-12-11 | 2020-03-24 | 西南石油大学 | Laser-mechanical combined rock breaking system under mud drilling environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1373675B1 (en) | Method for drilling and drilling apparatus | |
| CN110847811B (en) | Phosgene mixing barrel device for laser-mechanical rock breaking | |
| CN105618935B (en) | A kind of CO2Laser marking machine | |
| CN110108543A (en) | A kind of drill string of coupled laser broken rock experimental provision | |
| CN111982657A (en) | Rock breaking test device of laser-assisted machine | |
| CN111219189B (en) | Mining drill bit with femtosecond laser cutter and diamond cutter combined and mining method thereof | |
| CN206356741U (en) | A kind of carbon dioxide laser rig of rapid drilling | |
| CN108086899B (en) | Pneumatic torsional pendulum impact rock breaking drilling tool | |
| CN111980578A (en) | Light path transmission device for laser-mechanical rock breaking test | |
| CN111766170A (en) | Test method and test device for rock breaking by coupling laser | |
| CN209053558U (en) | A kind of laser assisted drilling test unit | |
| CN202684335U (en) | Coaxial nozzle used for thin-wall tube laser micromachining | |
| CN209969620U (en) | Guide rail machining lathe with follow-up chip blowing device | |
| CN113653447A (en) | Laser-mechanical drill bit for efficient rock breaking by combining laser and machine | |
| CN116117343A (en) | High-power groove laser cutting head and use method thereof | |
| CN201021604Y (en) | Bearing node for turbine driller | |
| CN209469430U (en) | A kind of general cutterhead of hierarchical modularity development machine | |
| CN206048357U (en) | A kind of foam sponge automatic drilling device of turning | |
| CN111794683B (en) | Split type laser drill bit | |
| CN110219583A (en) | A kind of large aperture pineapple hair style hard rock is crushed impactor and breaking method | |
| CN213597893U (en) | Drilling tool with drill cuttings recovery function | |
| CN214134541U (en) | Dust collecting device in laser processing device | |
| CN1269863A (en) | Rock drill and method for manufacturing said rock drill | |
| CN210475886U (en) | Optimized air flow composite high-speed laser nozzle | |
| CN109236179B (en) | Laser-assisted drilling test device and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
|
| RJ01 | Rejection of invention patent application after publication |