CN108194024B - Deep sea drilling machine equipped with variable-diameter core sampling drill rod power head and method - Google Patents
Deep sea drilling machine equipped with variable-diameter core sampling drill rod power head and method Download PDFInfo
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- CN108194024B CN108194024B CN201810112172.6A CN201810112172A CN108194024B CN 108194024 B CN108194024 B CN 108194024B CN 201810112172 A CN201810112172 A CN 201810112172A CN 108194024 B CN108194024 B CN 108194024B
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- 238000005070 sampling Methods 0.000 title claims abstract description 119
- 238000005553 drilling Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
- E21B7/136—Underwater drilling from non-buoyant support
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being specially adapted for operation under water
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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)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a deep sea drilling machine and a method provided with a variable-diameter core sampling drill rod power head, wherein the deep sea drilling machine comprises the variable-diameter sampling drill rod power head, a frame, a supporting leg system and a drill rod system, and the variable-diameter sampling drill rod power head comprises a feeding oil cylinder, an oil cylinder piston rod, a cross arm, a motor and an inverted tower type drill rod connector which are connected in sequence; the cross arm is a connecting rod in the horizontal direction, and the lower end of the motor is provided with an inverted tower type drill rod connector; the inverted tower type drill rod connector is of a plurality of layers of stepped round table structures with diameters decreasing from top to bottom, and a vertical surface of each layer of round table is provided with a thread structure; the drill rod system is provided with a plurality of sampling drill rods with different diameters, the upper end of each sampling drill rod is provided with a thread structure, and the thread of each sampling drill rod can correspond to one layer of thread of the inverted tower type drill rod connector. The invention has simple structure and strong reliability, and a single drilling machine can drill by using sampling drill rods with different diameters at one time.
Description
Technical Field
The invention relates to a deep sea drilling machine, in particular to a deep sea drilling machine with a variable-diameter core sampling drill rod power head and a method.
Background
With the increasing exhaustion of landed metal mineral resources, ocean solid mineral resources have become an object of attention of countries around the world, and the development of submarine resources can effectively relieve the situation of lack of global resources, so that the exploration of submarine mineral resources is particularly important. The deep sea core sampling drilling machine is a main technical means for carrying out deep sea submarine geological detection and submarine deep geological sampling, and is also an important tool for measuring the mechanical properties of submarine rocks.
In the process of exploration, a high-speed rotary drilling machine is generally adopted for sampling deep sea hard rock deposits. The difference in the matching relationship between the drilling parameters of the drill and the diameter of the drill rod can lead to a large difference in the coring rate when drilling core samples. In practical application, the power head connected with the motor can only be connected with a drill rod with a single diameter, and when facing deep sea ores with different hardness, such as multi-metal sulfides, cobalt-rich crust and the like, the optimal matching of drilling machine parameters and the diameter of a sampling drill rod for the ores cannot be found, so that the drilling effect is poor and the coring rate is low. Therefore, how to apply a drilling machine power head, which can be connected with drill rods with different diameters in one operation, and obtain the best drilling effect, and further obtain the best drilling parameters for a certain deep sea ore is a current urgent problem to be solved. At present, no report is found that the same drilling machine power head can be simultaneously connected with drill rods with different diameters.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a deep sea drilling machine with a variable diameter core sampling drill rod power head and a method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: a deep sea drilling machine with a variable diameter core sampling drill rod power head comprises the variable diameter sampling drill rod power head, a frame, a landing leg system and a drill rod system;
the rack and leg system comprises a drilling machine base and a rack arranged on the drilling machine base; the top end of the frame is provided with an umbilical cable joint, one side of the umbilical cable joint is connected with an umbilical cable of an external control system, the other side of the umbilical cable joint is connected with an in-machine umbilical cable, and the in-machine umbilical cable is connected with a variable-diameter sampling drill rod power head;
the diameter-variable sampling drill rod power head comprises a feeding oil cylinder, an oil cylinder piston rod, a cross arm, a motor and a reverse tower type drill rod connector which are sequentially connected, wherein the feeding oil cylinder is arranged in the vertical direction, the oil cylinder piston rod is positioned below the feeding oil cylinder, and one end of the oil cylinder piston rod is arranged in the feeding oil cylinder in the vertical direction; the cross arm is a connecting rod in the horizontal direction, two ends of the cross arm are respectively connected with an oil cylinder piston rod and a motor, and the lower end of the motor is provided with an inverted tower type drill rod connector; the inverted tower type drill pipe connector is of a plurality of layers of stepped round table structures with diameters decreasing from top to bottom, and a vertical surface of each layer of round table is provided with a thread structure;
the drill rod system comprises a drill rod frame and a sampling drill rod; the drill rod frame is fixed in the frame, the drill rod frame is provided with an annular horizontal frame, and the sampling drill rod is fixed on the horizontal frame through a buckle; the drill rod system is provided with a plurality of sampling drill rods with different diameters, the upper end of each sampling drill rod is provided with a thread structure, and the thread of each sampling drill rod can correspond to one layer of thread of the inverted tower type drill rod connector;
the frame and the landing leg system further comprise a hydraulic system, and the hydraulic system is arranged on the drilling machine base; the drill base is provided with an inclination sensor; the tilt sensor is connected to an external control system.
Further, the length of the cross arm is the same as the radius of the annular horizontal frame of the drill rod frame, the cross arm drives the motor and the inverted tower type drill rod connector to move freely in a circle taking the feeding oil cylinder as the center, and the upper ends of the sampling drill rods are all arranged on the circle of the movement of the inverted tower type drill rod connector.
Further, the inverted tower type drill rod connector is of a stepped round platform structure with 3 layers, and the drill rod system is provided with two sampling drill rods with three different diameters.
Further, a sample tube is arranged in the sampling drill rod; the bottom end of the sampling drill rod is connected with a sampling drill bit; the drill base is provided with a sampling borehole corresponding to the sampling drill bit.
Further, a tilt sensor is arranged on the drill base; the tilt sensor is connected to an external control system.
Further, the inverted tower type drill rod connector is connected with the sampling drill rod by adopting triangular single-line coarse tooth threads.
Further, the frame and support leg system further comprises leveling support legs, and the frame, the leveling support legs and the drill rod frame are connected with the drill base through welding.
Further, the motor is connected with the inverted tower type drill pipe connector through spline connection.
Further, the outer surface of the upper part of the sampling drill rod is square, so that the drill rod clamp is convenient to clamp.
The invention also discloses a method for obtaining the optimal drilling parameters of the deep sea ore by using the deep sea drilling machine, which comprises the following steps:
1. the deep sea drilling machine is hoisted into the sea by utilizing a winch and an umbilical cable, and is controlled by utilizing the operation of an external control system;
2. when the deep sea drilling machine reaches the rock, adjusting leveling support legs according to the data of the inclination sensor to level the deep sea drilling machine;
3. starting a variable-diameter sampling drill rod power head, driving a sampling drill rod and a sampling drill bit, enabling the sampling drill bit to penetrate through a sampling drill hole to break soil and sample, and enabling a core sample to enter a sample tube; after drilling is completed, the piston rod of the oil cylinder retracts to recover the sampling drill rod, and the core is stored in the sample tube;
4. a cross arm in the variable-diameter sampling drill rod power head rotates to drive the inverted tower type drill rod connector to move to the position of the sampling drill rod at the other position, and the motor operates to enable the inverted tower type drill rod connector to screw into the sampling drill rod at the other position;
5. repeating the third and fourth steps to complete one coring operation, wherein the drilling pressure and rotation speed parameters of the drilling machine can be changed for each coring until all drill rods complete sampling;
6. after the sampling is completed, recycling the deep sea drilling machine;
7. and testing the coring rate of drill rods with different diameters, and combining the drilling pressure and the rotation speed parameters of a drilling machine in the drilling process to measure the optimal drilling parameters for the deep sea ore.
The invention has simple structure and strong reliability, the number of the sampling drill rods can be increased or decreased according to the working requirement of the drilling machine, and a single drilling machine can drill by using a plurality of sampling drill rods with different diameters for one-time drainage; by comprehensively analyzing parameters such as deep sea ore characteristics, drilling pressure, rotating speed and the like of a drilling machine and coring rates of different drill rods, the optimal drilling parameters matched with the ore characteristics can be measured, and support is provided for deep sea mineral resource investigation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic diagram of a power head of a variable diameter sampling drill rod according to the present invention.
Fig. 3 is a schematic diagram of an inverted tower connector according to the present invention.
Fig. 4 is a schematic view of the drill pipe system of the present invention.
In the figure: 11. an external control system umbilical; 12. an umbilical cable inside the machine; 2. an umbilical connector; 31. feeding an oil cylinder; 32. a cylinder piston rod; 33. a cross arm; 34. a motor; 35. inverted tower drill pipe connector; 41. a frame; 42. a drill base; 43. leveling the support legs; 51. sampling a drill rod; 52. a drill rod rack; 53. a sampling drill bit; 54. a sample tube; 55. a horizontal frame; 6. a hydraulic system; 7. and (5) sampling and drilling holes.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The deep sea drilling machine provided with the variable diameter sampling drill rod power head shown in fig. 1 comprises the variable diameter sampling drill rod power head, a rack and supporting leg system, a drill rod system and a hydraulic system 6;
the rack and leg system includes a rig floor 42 and a rack 41 and leveling legs 43 mounted on the rig floor 42; the hydraulic system 6 is also mounted on the rig floor 42. The frame 41 is used for installing the umbilical cable joint 2, the variable-diameter sampling drill rod power head and the drill rod frame 52. The frame 41, leveling legs 43 are connected to the rig substructure 42 by welding.
The umbilical cable joint 2 is arranged at the top end of the frame, one side of the umbilical cable joint is connected with an umbilical cable 11 of an external control system, the other side of the umbilical cable joint is connected with an in-machine umbilical cable 12, and the in-machine umbilical cable 12 is connected with a variable-diameter sampling drill rod power head; wherein the external control system is located on a sea surface survey vessel, and an external control system umbilical is connected from the survey vessel to a deep sea rig at the seafloor. The drill base is provided with an inclination sensor; the tilt sensor is connected to an external control system located on the survey vessel.
The variable-diameter sampling drill rod power head shown in fig. 2 comprises a feeding oil cylinder 31, an oil cylinder piston rod 32, a cross arm 33, a motor 34 and a reverse tower type drill rod connector 35 which are sequentially connected, wherein the feeding oil cylinder 31 is arranged in the vertical direction, the oil cylinder piston rod 32 is positioned below the feeding oil cylinder 31, and one end of the oil cylinder piston rod is arranged in the feeding oil cylinder in the vertical direction; the cross arm 33 is a connecting rod in the horizontal direction, two ends of the cross arm 33 are respectively connected with the oil cylinder piston rod 32 and the motor 34 through threads, and the lower end of the motor 34 is connected with the inverted tower type drill rod connector 35 through a spline.
The inverted tower type drill rod connector is shown in fig. 3, and is provided with three layers of stepped round table structures with diameters decreasing from top to bottom, and the vertical surface of each layer of round table is provided with a triangular single-line thick-tooth thread structure; in this embodiment, three layers of threads may be used to connect sample drill pipes having diameters of 50mm, 100mm, 150mm, respectively.
The drill rod system includes a drill rod holder 52, a sampling drill rod 51 and a sampling drill bit 53. As shown in fig. 4, the drill rod frame 52 is welded and fixed inside the frame 41, the drill rod frame 52 is provided with an annular horizontal frame 55, and the sampling drill rod 51 is fixed on the horizontal frame 55 through a buckle; the drill rod system 5 is provided with two sampling drill rods 51 of three different diameters each, in this embodiment 50mm, 100mm, 150mm in diameter. The upper end of the sampling drill rod 51 is provided with a thread structure, and the thread of each sampling drill rod can correspond to one layer of thread of the inverted tower type drill rod connector. The threaded portion of the sampling drill pipe 51 is separated from the sampling portion, so that the rock and soil are prevented from damaging the threads, and the drill pipe is prevented from continuously screwing upwards to damage the threads when the drill pipe is stuck.
The length of the cross arm 33 is the same as the radius of the horizontal frame 55 of the drill rod frame 52, the cross arm drives the motor 34 and the inverted tower type drill rod connector 35 to move freely in a circle taking the feeding cylinder 31 as the center, and the upper ends of the sampling drill rods 51 are all arranged on the circle of the movement of the inverted tower type drill rod connector 35, so that the inverted tower type drill rod connector 35 is opposite to the sampling drill rods 51. The inverted tower type drill rod connector is connected with the sampling drill rod by adopting triangular single-line thick-tooth threads.
The bottom end of the sampling drill rod 51 is connected with a sampling drill bit 53; the drill base 42 is provided with sample drill holes 7 corresponding to a sample drill bit 53. The upper portion of the sampling drill rod 51 is provided as a kelly bar for easy clamping by the drill rod tongs.
The embodiment is used for drilling a deep sea hard rock sample and obtaining optimal drilling parameters, and comprises the following specific steps:
1. after the offshore exploration vessel arrives at the designated sampling location, it is confirmed that the rig of the present invention is in a normal operational state. The rig is hoisted into the sea using a winch and umbilical. The ship can control the drilling machine through the electronic monitoring system;
2. after the drilling machine reaches the rock, the inclination sensor on the drilling machine base 42 transmits inclination angle information to the ship through the umbilical cable, the ship controls the leveling system to adjust the inclination angle of the drilling machine, the drilling machine is realized through the leveling supporting legs 43, and the hydraulic system provides power. After the position of the drilling machine is determined, continuing to lower the 10-15m umbilical cable (depending on the power positioning condition and sea state);
3. after the drilling machine is leveled, the marine ship transmits a working signal through an umbilical cable, a variable-diameter sampling drill rod power head is started, the sampling drill rod 51 and the sampling drill bit 53 are driven to rotate together, the sampling drill bit 53 penetrates through the sampling drill hole 7 to break the earth for sampling, and a core sample enters the sample pipe 54 through the drill bit; after drilling is completed, the piston rod of the oil cylinder is retracted into the recovery drill rod, the core is pulled out and stored in the sample tube;
4. placing the drill rod with the sampling completed, rotating the variable-diameter sampling drill rod power head to enable the inverted tower type drill rod connector 35 to be opposite to the sampling drill rod 51, and screwing the motor 34 into the sampling drill rod with the other diameter;
5. repeating the third and fourth steps to complete one-time coring operation, wherein parameters such as drilling pressure, rotation speed and the like of the drilling machine can be changed for each coring until all drill rods complete sampling;
6. after the sampling is completed, the sea surface ship lifts the drilling machine through a winch and an umbilical cable for recovery;
7. and (3) testing the coring rate of drill rods with different diameters, and combining parameters such as the weight on bit and the rotation speed of the drilling machine in the drilling process to measure the optimal drilling parameters of the drilling machine for the deep sea ore.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be limited to the following claims.
Claims (9)
1. A deep sea drilling machine equipped with a variable diameter core sampling drill rod power head comprises a frame, a supporting leg system and a drill rod system, and is characterized in that: the variable-diameter sampling drill rod power head is also included;
the frame and leg system comprises a drill base (42) and a frame (41) mounted on the drill base (42); the top end of the frame (41) is provided with an umbilical cable joint (2), one side of the umbilical cable joint (2) is connected with an umbilical cable (11) of an external control system, the other side of the umbilical cable joint is connected with an umbilical cable (12) in the machine, and the umbilical cable (12) in the machine is connected with a variable-diameter sampling drill rod power head;
the diameter-variable sampling drill rod power head comprises a feeding oil cylinder (31), an oil cylinder piston rod (32), a cross arm (33), a motor (34) and a reverse tower type drill rod connector (35) which are sequentially connected, wherein the feeding oil cylinder (31) is arranged in the vertical direction, the oil cylinder piston rod (32) is positioned below the feeding oil cylinder (31), and one end of the oil cylinder piston rod is arranged in the feeding oil cylinder (31) in the vertical direction; the cross arm (33) is a connecting rod in the horizontal direction, two ends of the cross arm (33) are respectively connected with the oil cylinder piston rod (32) and the motor (34), and the lower end of the motor (34) is provided with an inverted tower type drill rod connector (35); the inverted tower type drill rod connector (35) is of a plurality of layers of stepped round table structures with diameters decreasing from top to bottom, and a vertical surface of each layer of round table is provided with a thread structure;
the drill rod system comprises a drill rod holder (52) and a sampling drill rod (51); the drill rod frame (52) is fixed inside the frame, the drill rod frame (52) is provided with an annular horizontal frame (55), and the sampling drill rod (51) is fixed on the horizontal frame (55) through a buckle; the drill rod system is provided with a plurality of sampling drill rods (51) with different diameters, the upper end of each sampling drill rod (51) is provided with a thread structure, and the thread of each sampling drill rod (51) can correspond to one layer of thread of the inverted tower type drill rod connector (35);
the frame and leg system further comprises a hydraulic system (6), wherein the hydraulic system (6) is arranged on a drilling machine base (42); a tilt sensor is arranged on the drill base (42); the tilt sensor is connected to an external control system.
2. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the length of the cross arm (33) is the same as the radius of an annular horizontal frame (55) of the drill rod frame (52), the cross arm (33) drives the motor (34) and the inverted tower type drill rod connector (35) to move freely in a circle taking the feeding cylinder (31) as the center, and the upper ends of the sampling drill rods (51) are all arranged on the circle of the movement of the inverted tower type drill rod connector (35).
3. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the inverted tower type drill rod connector (35) is of a stepped round platform structure with 3 layers, and the drill rod system is provided with two sampling drill rods (51) with three different diameters.
4. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: a sample tube (54) is arranged in the sampling drill rod (51); the bottom end of the sampling drill rod (51) is connected with a sampling drill bit (53); the drill base (42) is provided with a sampling drill (7) corresponding to a sampling drill bit (53).
5. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the inverted tower type drill rod connector (35) is connected with the sampling drill rod (51) through triangular single-line coarse tooth threads.
6. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the frame and leg system further comprises leveling legs (43), and the frame (41), the leveling legs (43) and the drill rod frame (52) are connected with the drill base (42) through welding.
7. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the motor (34) is connected with the inverted tower type drill rod connector (35) through spline connection.
8. The deep sea drill equipped with a variable diameter core sampling drill pipe power head of claim 1, wherein: the upper outer surface of the sampling drill rod (51) is square.
9. A method for obtaining optimal drilling parameters of deep sea ore using the deep sea rig of claim 1, characterized by: the method comprises the following steps:
1. the deep sea drilling machine is hoisted into the sea by utilizing a winch and an umbilical cable, and is controlled by utilizing the operation of an external control system;
2. when the deep sea drilling machine reaches the rock, adjusting leveling support legs (43) according to the data of the inclination sensor to level the deep sea drilling machine;
3. starting a variable-diameter sampling drill rod power head, driving a sampling drill rod (51) and a sampling drill bit (53), enabling the sampling drill bit (53) to penetrate through a sampling drill hole (7) for breaking soil and sampling, and enabling a core sample to enter a sample tube (54); after drilling is completed, the oil cylinder piston rod (32) is retracted into the recovery sampling drill rod (51), and the core is stored in the sample tube (54);
4. a cross arm (33) in the variable-diameter sampling drill rod power head rotates to drive the inverted tower type drill rod connector (35) to move to the position of the sampling drill rod (51) at the other position, and a motor (34) operates to enable the inverted tower type drill rod connector (35) to screw into the sampling drill rod (51) at the other position;
5. repeating the third and fourth steps to complete one coring operation, wherein the drilling pressure and rotation speed parameters of the drilling machine can be changed for each coring until all drill rods complete sampling;
6. after the sampling is completed, recycling the deep sea drilling machine;
7. and testing the coring rate of drill rods with different diameters, and combining the drilling pressure and the rotation speed parameters of a drilling machine in the drilling process to measure the optimal drilling parameters for the deep sea ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112172.6A CN108194024B (en) | 2018-02-05 | 2018-02-05 | Deep sea drilling machine equipped with variable-diameter core sampling drill rod power head and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810112172.6A CN108194024B (en) | 2018-02-05 | 2018-02-05 | Deep sea drilling machine equipped with variable-diameter core sampling drill rod power head and method |
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| CN108194024A CN108194024A (en) | 2018-06-22 |
| CN108194024B true CN108194024B (en) | 2023-09-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109989717B (en) * | 2019-04-16 | 2023-12-08 | 中国地质大学（武汉） | Drill rod warehouse capable of realizing automatic rod replacement |
| CN110261169A (en) * | 2019-07-22 | 2019-09-20 | 陕西理工大学 | A kind of pollution soil sample sampler for environment protection and monitoring |
| CN111643175B (en) * | 2020-04-29 | 2021-07-02 | 天衍医疗器材有限公司 | Power joint device adaptive to different power tools |
| CN111810071B (en) * | 2020-07-23 | 2022-07-12 | 北京探矿工程研究所 | Submarine drilling rig rope coring device |
| CN112127883B (en) * | 2020-11-03 | 2022-03-15 | 浙江大学 | Deep sea multitube rotary drilling type sampler |
| CN114000828B (en) * | 2021-10-27 | 2022-09-06 | 中国地质大学（北京） | Submarine multi-head continuous sampling drilling machine |
| CN114000829B (en) * | 2021-10-27 | 2022-09-27 | 中国地质大学（北京） | Central control type seabed multi-head continuous sampling drilling machine |
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| CN1362571A (en) * | 2002-02-06 | 2002-08-07 | 国家***第一海洋研究所 | Deep-sea multile-bit incrusting and coring rig |
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| CN108194024A (en) | 2018-06-22 |
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