CN114109344B - Underground coal seam drilling, mining and gasifying integrated mining equipment - Google Patents
Underground coal seam drilling, mining and gasifying integrated mining equipment Download PDFInfo
- Publication number
- CN114109344B CN114109344B CN202111431861.1A CN202111431861A CN114109344B CN 114109344 B CN114109344 B CN 114109344B CN 202111431861 A CN202111431861 A CN 202111431861A CN 114109344 B CN114109344 B CN 114109344B
- Authority
- CN
- China
- Prior art keywords
- drill
- coal seam
- wall
- assembly
- drilling
- 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.)
- Active
Links
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
Abstract
The invention discloses underground coal seam drilling, mining and gasifying integrated mining equipment, which relates to the technical field of coal seam mining, and comprises drilling equipment which is erected on the ground; one end of the drill rod is fixed at the output end of the drilling equipment, and a drill bit is fixed at the other end of the drill rod; the centralizing components are at least three groups and are circumferentially distributed on the outer wall of the drill rod; the gasification system is fixed between the drill bit and the centralizing component, and a gap is reserved between the gasification system and the side wall of the drill hole through the centralizing component; the hole sealing assembly is rotatably arranged on the outer wall of the drill rod and is positioned at the junction of the rock stratum and the coal seam; and the gasification treatment equipment is communicated with the drill holes by adopting a plurality of acquisition holes and is used for collecting and treating gasified coal bed gas.
Description
Technical Field
The invention relates to the technical field of coal seam mining, in particular to underground coal seam drilling, mining and gasification integrated mining equipment.
Background
The underground coal seam gasification is to directly burn and gasify coal in situ underground by adopting a chemical mining method to generate combustible gas (mainly H2, CO and CH 4), and is a novel technology for developing clean energy by using high-carbon resources and low carbonization.
The existing coal seam gasification exploitation equipment needs to drill holes firstly and then carry out liquid injection on the drill holes, the working procedure is complex, and the gasification system is easy to collide with the side wall of the drill holes when being put into the drill holes, so that the gasification system is damaged, air bags are generally adopted for hole sealing when hole sealing is carried out, gas injection is needed to be carried out on the air bags, and the exploitation progress is influenced.
The invention provides underground coal seam drilling, mining and gasifying integrated mining equipment for solving the problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: an underground coal seam drilling, mining and gasification integrated mining device, comprising:
the drilling equipment is erected on the ground;
one end of the drill rod is fixed at the output end of the drilling equipment, and a drill bit is fixed at the other end of the drill rod;
the centralizing components are at least three groups and are circumferentially distributed on the outer wall of the drill rod;
the gasification system is fixed between the drill bit and the centralizing component, and a gap is reserved between the gasification system and the side wall of the drill hole through the centralizing component;
the hole sealing assembly is rotatably arranged on the outer wall of the drill rod and is positioned at the junction of the rock stratum and the coal seam; and
the gasification treatment equipment is communicated with the drill holes by adopting a plurality of collecting holes and is used for collecting and treating gasified coal bed gas.
Further, preferably, the hole sealing assembly includes:
the unidirectional wheel is sleeved on the drill rod;
the inner ring is rotationally sleeved on the drill rod by adopting two sealing bearings, and the two sealing bearings are symmetrically arranged on the upper side and the lower side of the inner ring;
an expansion assembly configured in plurality, circumferentially disposed on the inner ring;
the sealing ring body is hinged to one end, far away from the inner ring, of the expansion assembly; and
and the contraction assemblies are configured into a plurality of parts and are circumferentially distributed on the outer wall of the sealing ring body.
Further, preferably, the inner wall of the inner ring is hinged with at least two limiting claws, the limiting claws are contacted with the unidirectional wheel by adopting elastic sheets, a plurality of bosses are circumferentially arranged on the outer wall of the inner ring, and the bosses are connected with the expansion assembly;
the inner ring is internally provided with a plurality of first guide grooves, and the first guide grooves correspond to the expansion assembly.
Further, preferably, the expansion assembly includes:
one end of the connecting piece is hinged to the boss, and the other end of the connecting piece is hinged to the sealing ring body;
the first guide rod is fixed on one side, close to the inner ring, of the connecting piece and can slide in the first guide groove; and
and the expansion spring is sleeved on the first guide rod.
Further, preferably, the sealing ring body is made of a deformable material, and can be expanded or contracted along with rotation of the expansion assembly, and the outer wall of the sealing ring body is provided with a plurality of accommodating grooves for accommodating the contraction assembly.
Further, preferably, the retraction assembly includes:
the resistance plate is hinged in the accommodating groove;
the second guide rod is fixed on one side, close to the accommodating groove, of the resistance plate, and can slide in a second guide groove formed in the accommodating groove; and
and the reset spring is sleeved on the second guide rod.
Further, preferably, the elastic force of the return spring is smaller than that of the expansion spring, so that the contraction component can be contracted into the accommodating groove through the expansion spring when the sealing ring body is expanded.
Further, preferably, at least three groups of fixing grooves are formed in the outer wall of the drill rod, and a centralizing assembly is fixed in each fixing groove.
Further, preferably, the righting assembly comprises:
a fixing seat;
the two rotating plates are symmetrically hinged to two sides of the fixed seat;
a tension spring connected between the two rotating plates; and
the rotating wheel is rotatably arranged on one side, far away from the fixed seat, of the rotating plate.
Further, preferably, the rotating wheel is a spherical wheel, and can rotate in multiple directions on the inner wall of the drill hole.
Compared with the prior art, the invention provides underground coal seam drilling, mining and gasifying integrated mining equipment, which has the following beneficial effects:
according to the invention, the drill bit and the gasification system can be used for drilling and gasifying the coal seam, the gasified coal seam is collected through the plurality of collecting holes, the output efficiency of the coal seam gas is greatly improved, the gasification system is always not contacted with the inner wall of a drill hole through the righting component, the damage of the gasification system caused by collision is prevented, when the drill rod rotates, the hole sealing component contracts through the centrifugal force generated by the high-speed rotation of the drill rod, the force of contraction can be increased through the contraction component when the drill rod contracts, so that the hole sealing component moves along the drill rod into the drill hole, when the hole sealing position is reached, the rotation of the drill rod is stopped, the hole sealing component expands outwards through the internal expansion component, and therefore hole sealing operation is completed, the device is convenient, and after hole sealing is completed, the contraction component can also generate extrusion force to the drill hole through the resistance plate, so that the stability of the drill rod is improved.
Drawings
FIG. 1 is an overall schematic diagram of an underground coal seam drilling, mining and gasification integrated mining device;
FIG. 2 is a schematic diagram of a hole sealing assembly of an underground coal seam drilling, mining and gasification integrated mining device;
FIG. 3 is an enlarged schematic view of a position A of an underground coal seam drilling, mining and gasification integrated mining device;
FIG. 4 is a schematic diagram of a centralizing assembly of an underground coal seam drilling, production and gasification integrated mining device;
in the figure: 1. drilling equipment; 2. a drill rod; 3. a drill bit; 4. a gasification system; 5. a righting assembly; 6. a hole sealing assembly; 7. a collection hole; 8. a gasification treatment device; 61. a unidirectional wheel; 62. an inner ring; 63. an expansion assembly; 64. a seal ring body; 65. a retraction assembly; 66. a limit claw; 67. a spring plate; 621. a boss; 622. a first guide groove; 631. a connecting piece; 632. a first guide rod; 641. a receiving groove; 651. a resistance plate; 652. a second guide rod; 21. a fixing groove; 51. a fixing seat; 52. a rotating plate; 53. a tension spring; 54. a rotating wheel.
Detailed Description
Referring to fig. 1 to 4, the present invention provides a technical solution: an underground coal seam drilling, mining and gasification integrated mining device, comprising:
the drilling equipment 1 is erected on the ground;
one end of the drill rod 2 is fixed at the output end of the drilling equipment 1, and a drill bit 3 is fixed at the other end of the drill rod 2;
the centralizing components 5 are at least three groups and are circumferentially distributed on the outer wall of the drill rod 2;
the gasification system 4 is fixed between the drill bit 3 and the centralizing component 5, and a gap is reserved between the gasification system 4 and the side wall of the drill hole through the centralizing component 5;
the hole sealing assembly 6 is rotatably arranged on the outer wall of the drill rod 2, and the hole sealing assembly 6 is positioned at the junction of a rock stratum and a coal seam; and
and the gasification treatment equipment 8 is communicated with the drill holes by adopting a plurality of collecting holes 7 and is used for collecting and treating gasified coal bed gas.
It should be noted that, when the drilling rod 2 performs the drilling operation, the rotation direction of the drilling rod is clockwise, so that the drilling rod is convenient to drive the hole sealing assembly 6 to synchronously rotate, and the hole sealing assembly 6 can be contracted due to centrifugal force.
In this embodiment, the sealing assembly 6 includes:
a unidirectional wheel 61 sleeved on the drill rod 2;
the inner ring 62 is rotatably sleeved on the drill rod 2 by adopting two sealing bearings, and the two sealing bearings are symmetrically arranged on the upper side and the lower side of the inner ring 62;
an expansion assembly 63 configured in plurality, circumferentially disposed on the inner ring 62;
a sealing ring 64 hinged to the end of the expansion assembly 63 remote from the inner ring; and
the contraction assembly 65 is configured in a plurality and circumferentially arranged on the outer wall of the seal ring 64.
It should be explained that, the unidirectional wheel 61 is adopted to enable the drill rod 2 not to drive the hole sealing assembly 6 to rotate when rotating anticlockwise, so that the hole sealing effect is improved, and the gasification system 4 can be rotated through anticlockwise rotation of the drill rod 2, so that the coal seam is more uniform in gasification, and the collection efficiency is improved.
As a preferred embodiment, the inner wall of the inner ring 62 is hinged with at least two limiting claws 66, the limiting claws 66 are contacted with the unidirectional wheel 61 by adopting elastic sheets 67, a plurality of bosses 621 are circumferentially arranged on the outer wall of the inner ring 62, and the bosses 621 are connected with the expansion assembly 63;
the inner ring 62 is further provided with a plurality of guide grooves 622 therein, and the guide grooves 622 correspond to the expansion assembly 63.
As a preferred embodiment, the expansion assembly 63 includes:
a connecting member 631 having one end hinged to the boss 621 and the other end hinged to the seal ring 64;
a first guide rod 632 fixed on one side of the connecting piece 631 near the inner ring 62, and the first guide rod 632 can slide in the first guide groove 622; and
and an expansion spring sleeved on the first guide rod 632.
In a preferred embodiment, the sealing ring 64 is made of a deformable material and can be expanded or contracted along with the rotation of the expansion assembly 63, and a plurality of accommodating grooves 641 are formed in the outer wall of the sealing ring 64 for accommodating the contraction assembly 65.
As a preferred embodiment, the retraction assembly 65 includes:
a resistance plate 651 hinged in the receiving groove 641;
a second guide rod 652 fixed to a side of the resistance plate 651 adjacent to the accommodation groove 641, the second guide rod 652 being slidable in a second guide groove provided in the accommodation groove 641; and
and a return spring sleeved on the second guide rod 652.
It should be noted that, when the drill rod 2 rotates clockwise at a high speed, the resistance generated by the resistance plate 651 and the centrifugal force generated by the rotation of the drill rod 2 can increase the contraction degree of the seal ring body 64, thereby facilitating entry into the borehole.
As a preferred embodiment, the elastic force of the return spring is smaller than that of the expansion spring, so that the contraction assembly 65 can be contracted into the accommodating groove 641 by the expansion spring when the sealing ring body 64 is expanded, that is, the expansion spring can expand the sealing ring body 64 when the hole is sealed, so that the resistance plate 651 is contracted, and the return spring can enable the resistance plate 651 to generate extrusion force on the drill hole, so that the drill rod 2 is more stable in the drill hole.
In this embodiment, at least three groups of fixing grooves 21 are formed in the outer wall of the drill rod 2, and the righting assembly 5 is fixed in the fixing grooves 21.
As a preferred embodiment, the righting assembly 5 comprises:
a fixing base 51;
the two rotating plates 52 are symmetrically hinged to two sides of the fixed seat 51;
a tension spring 53 connected between the two rotation plates 52; and
the rotating wheel 54 is rotatably arranged on one side of the rotating plate 52 away from the fixed seat 51.
In a preferred embodiment, the wheel 54 is a spherical wheel capable of multi-directional rotation within the borehole wall.
Specifically, when using, make drilling rod 2 rotate clockwise at a high speed through drilling equipment 1 to with it to the rock stratum drilling, and make gasification system 4 can not contact with the drilling inner wall all the time through righting subassembly 5 at the drilling, prevented gasification system 4 because of the damage that the collision caused, when reaching the hole sealing position, stop the rotation of drilling rod, hole sealing subassembly 6 outwards expands through inside expansion assembly 63, thereby make sealed ring body 64 laminating drilling inner wall, accomplish hole sealing operation, it is comparatively convenient, and after the hole sealing is accomplished, shrink subassembly 65 can also produce the extrusion force to the drilling through resistance board 651, thereby increased drilling rod 2's stability, afterwards release the gasification agent through gasification system 4, and ignite the coal seam, coal seam gas after the gasification is collected into gasification treatment facility 8 through gathering hole 7.
The foregoing description 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 solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. An underground coal seam drilling, mining and gasifying integrated mining device is characterized in that: comprising the following steps:
the drilling equipment (1) is erected on the ground;
one end of the drill rod (2) is fixed at the output end of the drilling equipment (1), and the other end of the drill rod (2) is fixed with a drill bit (3);
the centralizing components (5) are at least three groups and are circumferentially distributed on the outer wall of the drill rod (2);
the gasification system (4) is fixed between the drill bit (3) and the centralizing component (5), and a gap is reserved between the gasification system (4) and the side wall of the drill hole through the centralizing component (5);
the hole sealing assembly (6) is rotatably arranged on the outer wall of the drill rod (2), and the hole sealing assembly (6) is positioned at the junction of a rock stratum and a coal seam; and
the gasification treatment equipment (8) is communicated with the drill holes by adopting a plurality of acquisition holes (7) and is used for collecting and treating gasified coal bed gas;
the hole sealing assembly (6) comprises:
a unidirectional wheel (61) sleeved on the drill rod (2);
the inner ring (62) is rotationally sleeved on the drill rod (2) by adopting two sealing bearings, and the two sealing bearings are symmetrically arranged on the upper side and the lower side of the inner ring (62);
an expansion assembly (63) configured in plurality, circumferentially disposed on the inner ring (62);
the sealing ring body (64) is hinged to one end of the expansion assembly (63) far away from the inner ring; and
a plurality of constriction assemblies (65) circumferentially arranged on the outer wall of the sealing ring body (64);
the inner wall of the inner ring (62) is hinged with at least two limiting claws (66), the limiting claws (66) are contacted with the unidirectional wheel (61) by adopting elastic sheets (67), a plurality of bosses (621) are distributed on the circumference of the outer wall of the inner ring (62), and the bosses (621) are connected with the expansion assembly (63);
a plurality of first guide grooves (622) are formed in the inner ring (62), and the first guide grooves (622) correspond to the expansion assembly (63);
the expansion assembly (63) comprises:
a connecting member (631) having one end hinged to the boss (621) and the other end hinged to the seal ring body (64);
a first guide rod (632) fixed on one side of the connecting piece (631) close to the inner ring (62), and the first guide rod (632) can slide in the first guide groove (622); and
an expansion spring sleeved on the first guide rod (632);
the sealing ring body (64) is made of deformable materials, can be unfolded or contracted along with the rotation of the expansion assembly (63), and a plurality of accommodating grooves (641) are formed in the outer wall of the sealing ring body (64) and are used for accommodating the contraction assembly (65).
2. An underground coal seam drilling, production and gasification integrated mining device according to claim 1, wherein: the retraction assembly (65) comprises:
a resistance plate (651) hinged in the accommodation groove (641);
a second guide rod (652) fixed to one side of the resistance plate (651) close to the accommodating groove (641), wherein the second guide rod (652) can slide in a second guide groove formed in the accommodating groove (641); and
and the return spring is sleeved on the second guide rod (652).
3. An underground coal seam drilling, production and gasification integrated mining device as claimed in claim 2, wherein: the elastic force of the return spring is smaller than that of the expansion spring, and the contraction component (65) can be contracted into the accommodating groove (641) through the expansion spring when the sealing ring body (64) is unfolded.
4. An underground coal seam drilling, production and gasification integrated mining device according to claim 1, wherein: at least three groups of fixing grooves (21) are formed in the outer wall of the drill rod (2), and a centralizing component (5) is fixed in each fixing groove (21).
5. An underground coal seam drilling, production and gasification integrated mining device as claimed in claim 4, wherein: the righting assembly (5) comprises:
a fixed seat (51);
the two rotating plates (52) are symmetrically hinged to two sides of the fixed seat (51);
a tension spring (53) connected between the two rotation plates (52); and
the rotating wheel (54) is rotatably arranged on one side of the rotating plate (52) far away from the fixed seat (51).
6. An underground coal seam drilling, production and gasification integrated mining device as claimed in claim 5, wherein: the rotating wheel (54) is a spherical wheel and can rotate in multiple directions on the inner wall of the drill hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431861.1A CN114109344B (en) | 2021-11-29 | 2021-11-29 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431861.1A CN114109344B (en) | 2021-11-29 | 2021-11-29 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114109344A CN114109344A (en) | 2022-03-01 |
| CN114109344B true CN114109344B (en) | 2023-09-19 |
Family
ID=80371378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111431861.1A Active CN114109344B (en) | 2021-11-29 | 2021-11-29 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114109344B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301875A (en) * | 1977-03-04 | 1981-11-24 | Messerschmitt-Bolkow-Blohm Gmbh | Method for making holes and producing gas in coal seams |
| CN104481535A (en) * | 2014-11-12 | 2015-04-01 | 中国矿业大学 | Drilling and production integrated method for steep-inclined coal seam |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
| CN106437522A (en) * | 2016-11-30 | 2017-02-22 | 淮南矿业(集团)有限责任公司 | Deep-level and high-ground-stress coal uncovering and drilling construction device and method |
| CN111963056A (en) * | 2020-08-31 | 2020-11-20 | 中国地质大学（北京） | Underground coal gasification drilling type mining process |
-
2021
- 2021-11-29 CN CN202111431861.1A patent/CN114109344B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301875A (en) * | 1977-03-04 | 1981-11-24 | Messerschmitt-Bolkow-Blohm Gmbh | Method for making holes and producing gas in coal seams |
| CN104481535A (en) * | 2014-11-12 | 2015-04-01 | 中国矿业大学 | Drilling and production integrated method for steep-inclined coal seam |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
| CN106437522A (en) * | 2016-11-30 | 2017-02-22 | 淮南矿业(集团)有限责任公司 | Deep-level and high-ground-stress coal uncovering and drilling construction device and method |
| CN111963056A (en) * | 2020-08-31 | 2020-11-20 | 中国地质大学（北京） | Underground coal gasification drilling type mining process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114109344A (en) | 2022-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011333809B2 (en) | Wireless downhole unit | |
| CN107290175B (en) | A kind of Portable field rock sampler and method | |
| US8127833B2 (en) | Methods and apparatus for harvesting potential energy downhole | |
| CN110186709A (en) | The multistage big depth drilling system of a kind of month base fidelity coring and method | |
| CN114109344B (en) | Underground coal seam drilling, mining and gasifying integrated mining equipment | |
| GB2492663A (en) | Deformed of blocked passage access | |
| CN105649611B (en) | A kind of electronic layering pressure fall-off test instrument and its test method with one heart | |
| CN115096647B (en) | Sampling device for petroleum geological exploration | |
| CN113605886A (en) | Deep drilling complex environment local wall stress relieving method test system | |
| CN105064992A (en) | Axial knocking type drilling and sampling device | |
| CN111156049A (en) | Coal mine gas extraction device | |
| CN205025395U (en) | Income instrument under underwater wellhead | |
| CN111852328A (en) | Soil layer peristaltic self-balancing static pressure feeding pore-forming system | |
| JP4017111B2 (en) | How to install a deep borehole measuring device | |
| CN110501756B (en) | Geothermal energy detection device based on heat conduction principle | |
| CN114459797A (en) | Shale gas exploration sampling device that little grid electricity generation was used | |
| Tian et al. | Design of a drilling unit for deep-sea stratum drilling robot | |
| CN211737048U (en) | Reaming and casing pipe laying integrated complete drilling tool | |
| CN101994500B (en) | Expansion support horizontal screen pipe device and using method thereof | |
| CN112983323A (en) | Electric cutting tool in oil pipe | |
| CN213807553U (en) | Drilling equipment for coal mine tunneling operation | |
| CN117167019A (en) | Drilling anchoring type asteroid mineral collection and cross-domain transportation system and method | |
| CN212958606U (en) | Ground stress test assembly | |
| US11236563B1 (en) | Autonomous downhole tool | |
| CN220448087U (en) | Anchoring robot |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |