CN114016943A - Coal bed gas well rope coring drilling device - Google Patents
Coal bed gas well rope coring drilling device Download PDFInfo
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- CN114016943A CN114016943A CN202111365814.1A CN202111365814A CN114016943A CN 114016943 A CN114016943 A CN 114016943A CN 202111365814 A CN202111365814 A CN 202111365814A CN 114016943 A CN114016943 A CN 114016943A
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- coring
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- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 title claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 4
- 238000005070 sampling Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 description 12
- 230000005484 gravity Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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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
- E21B47/00—Survey of boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a coal bed gas well rope coring drilling device which comprises a drill rod, a connecting pipe and a coring drill pipe, wherein the bottom of the drill rod is in threaded connection with the top of the connecting pipe; a measuring system is arranged in the coring and drilling device and comprises a pressure sensor module, an ultrasonic transmitting module, an ultrasonic receiving module, a data processing module, a parameter setting module and a display module. According to the invention, the connecting pipe and the core drilling pipe are moved upwards to drive the limiting structure to clamp the core, so that the limiting structure fixes the periphery of the core, and meanwhile, the core is monitored in real time through the measuring system, so that the core is prevented from being separated from continuous operation, the time is saved, and the core sampling capacity and the working efficiency are improved.
Description
Technical Field
The invention relates to the technical field of coring and drilling, in particular to a coal-bed gas well rope coring and drilling device.
Background
The layered solid combustible mineral product is formed by transforming plant remains through complex biochemical action and geological action, is present in a coal-containing rock series and is positioned between top and bottom rock, and coring refers to the process of sampling rocks from a drilled stratum in order to know the geological condition of the stratum.
Among the prior art, in order to understand the low-grade condition among the coal bed gas well, need get the core to the stratum that corresponds, it needs to use coring drilling equipment to get the core, coring drill pipe among the coring drilling equipment does not take out the core easily, the core can receive the influence of gravity at the in-process of rebound, when the core fracture, all be the reason that leads to the core to drop, when upwards drawing at the core simultaneously, can not clear understanding whether fix the core, lead to rock sample work efficiency to descend.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a coal bed gas well rope coring drilling device which can be used for assisting in fixing two sides of a rock core and judging whether the rock core is fixed or not so as to solve the problem of low rock core sampling efficiency in the existing coring drilling.
In order to achieve the purpose, the invention is realized by the following technical scheme: a coal bed gas well rope coring drilling device comprises a drill rod, a connecting pipe and a coring drill pipe, wherein the bottom of the drill rod is in threaded connection with the top of the connecting pipe, the bottom of the connecting pipe is in threaded connection with the top of the coring drill pipe, a limiting structure is sleeved on the surface of the connecting pipe, and the bottom of the limiting structure penetrates into the coring drill pipe and is matched with the inner wall of the coring drill pipe;
a measuring system is arranged in the coring and drilling device and comprises a pressure sensor module, an ultrasonic transmitting module, an ultrasonic receiving module, a data processing module, a parameter setting module and a display module.
Further, limit structure includes that the lantern ring and two are supported and move the pole, two the top of the pole is moved in the support respectively with lantern ring bottom both sides fixed connection, it has first dead lever to support the contact of pole bottom, the equal swing joint in inside top of first dead lever and bottom has the slide bar, the slide bar both sides all with get the inside fixed connection of core drill pipe, two first dead lever is close to one side top and the equal fixedly connected with second dead lever in bottom each other, the second dead lever is kept away from first dead lever one side and is run through the core drill pipe and extend to inside the core drill pipe, first dead lever one side fixedly connected with stopper is kept away from to the second dead lever.
Further, the stopper is kept away from second dead lever one side fixedly connected with rubber pad, core drill pipe inner wall seted up with stopper and rubber pad cooperation use the recess.
Further, first dead lever bottom fixedly connected with locating piece, the locating piece is close to one side each other and runs through coring drill pipe and extend to inside coring drill pipe, and uses with stopper and rubber pad cooperation.
Furthermore, a reset ring is fixedly connected to the top of the surface of the sleeve ring, and the cross-sectional area of the bottom of the reset ring is smaller than that of the top of the reset ring.
Further, the bottom of the abutting rod and the top of the first fixing rod are oblique angles and are matched with each other for use, and the oblique angles are formed at one side, close to each other, of the positioning block.
Further, the pressure sensor module is used for measuring the pressure of stopper department centre gripping, ultrasonic wave emission module and ultrasonic wave receiving module are used for measuring the distance between the lantern ring and the coring drill pipe, data processing module is used for handling the data of pressure sensor module, ultrasonic wave emission module and ultrasonic wave receiving module, according to parameter setting module data contrast, generates the calculated result, parameter setting module is used for inputing parameter data, display module is used for producing the calculated result to data processing module and shows.
Further, the data processing module is configured with a processing policy, and the processing policy is: setting the ratio of coring volume parameter and gravity to mass, taking the ratio of volume parameter and gravity to mass into the first algorithm to obtain the weight of the object, taking the weight of the object into the second algorithm to obtain the required clamping force, comparing the clamping force with the data measured by the ultrasonic transmitting module and the ultrasonic receiving module, and coring or adjusting according to the display data in the display module.
Further, the first algorithm is configured to: g ═ mg, where G is the weight of the object, m is the mass of the object, and G is the ratio of the weight to the mass, and the weight of the object is measured, the second algorithm is configured to: n is G/2 μ, where N is the weight of the object to be measured, G is the clamping force, and μ is the friction factor between the object and the clamped object.
Further, the measurement system further comprises an enforcement module configured with enforcement policies comprising: when the clamping force is smaller than the measuring pressure, the clamping force is extremely tight, when the clamping force is equal to the measuring pressure, the clamping force is tight, and when the clamping force is larger than the measuring pressure, the clamping force is loose;
when the force is extremely tight and tight, the coring is continued, and when the force is loose, the coring is timely adjusted;
the ultrasonic receiving module is configured with an adjusting strategy, wherein the adjusting strategy comprises that when the distance is 0, the resisting force is superstrong, when the distance is 0-X (excluding 0), the resisting force is strong, and when the distance is more than X, the resisting force is none;
x is the distance that the pole and the first dead lever just contacted, and when the distance was 0-X (including 0), the clamping-force was effective, continues to get the core, and when the distance was more than X, the clamping-force was invalid, in time adjusted.
The invention has the beneficial effects that: according to the invention, the connecting pipe and the core drilling pipe are moved upwards to drive the limiting structure to clamp the core, so that the limiting structure fixes the periphery of the core, and meanwhile, the core is monitored in real time through the measuring system, so that the core is prevented from being separated from continuous operation, the time is saved, and the core sampling capacity and the working efficiency are improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of a coring bit;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is a schematic diagram of the positions of the ultrasonic transmitting module and the ultrasonic receiving module;
FIG. 5 is a schematic view of a pressure sensor module position;
fig. 6 is a flow chart of a measurement system.
In the figure: 1. a drill stem; 2. a connecting pipe; 3. coring the drill pipe; 4. a limiting structure; 41. a collar; 42. pushing the rod; 43. a first fixing lever; 44. a slide bar; 45. a second fixing bar; 46. a limiting block; 5. a rubber pad; 6. a groove; 7. positioning blocks; 8. a reset ring; 9. a pressure sensor module; 10. an ultrasonic wave emitting module; 11. an ultrasonic receiving module; 12. a data processing module; 13. a parameter setting module; 14. and a display module.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of the present invention.
A coal bed gas well rope coring drilling device comprises a drill rod 1, a connecting pipe 2 and a coring drill pipe 3, wherein the bottom of the drill rod 1 is in threaded connection with the top of the connecting pipe 2, the bottom of the connecting pipe 2 is in threaded connection with the top of the coring drill pipe 3, a limiting structure 4 is sleeved on the surface of the connecting pipe 2, and the bottom of the limiting structure 4 penetrates into the coring drill pipe 3 and is matched with the inner wall of the coring drill pipe 3 for use;
a measurement system is arranged in the core drilling device and comprises a pressure sensor module 9, an ultrasonic transmitting module 10, an ultrasonic receiving module 11, a data processing module 12, a parameter setting module 13 and a display module 14.
Referring to fig. 2, 3, 4, 5 and 6, fig. 2 is a schematic view of the internal structure of the coring bit; FIG. 3 is an enlarged view of A in FIG. 2; FIG. 4 is a schematic diagram of the positions of the ultrasonic transmitting module and the ultrasonic receiving module; FIG. 5 is a schematic view of a pressure sensor module position; fig. 6 is a flow chart of a measurement system.
The limiting structure 4 comprises a lantern ring 41 and two abutting rods 42, the tops of the two abutting rods 42 are respectively fixedly connected with the two sides of the bottom of the lantern ring 41, the bottom of the abutting rods 42 is contacted with a first fixing rod 43, the top and the bottom of the inside of the first fixing rod 43 are movably connected with a sliding rod 44, the two sides of the sliding rod 44 are respectively fixedly connected with the inside of the coring drill pipe 3, the top and the bottom of the side, close to each other, of the two first fixing rods 43 are respectively fixedly connected with a second fixing rod 45, one side, far away from the first fixing rod 43, of the second fixing rod 45 penetrates through the coring drill pipe 3 and extends into the coring drill pipe 3, one side, far away from the first fixing rod 43, of the second fixing rod 45 is fixedly connected with a limiting block 46, the lantern ring 41 moves upwards through the connecting pipe 2, and the lantern ring 41 moves downwards under the action of gravity, therefore, the first fixing rod 43 is pushed by the pushing rod 42 to drive the second fixing rod 45 and the limiting block 46 to limit and fix the periphery of the rock core, and the rock core is prevented from falling due to small or cracked.
First dead lever 43 bottom fixedly connected with locating piece 7, inside locating piece 7 was close to one side each other and runs through coring drill pipe 3 and extend to coring drill pipe 3, and uses with stopper 46 and rubber pad 5 cooperation, through the setting of bottom locating piece 7, can play the effect of tentatively cutting off the core on the one hand, and on the other hand also can hold in the palm the end to the core, increases the fixed ability to the core.
The top fixedly connected with of lantern ring 41 surface resets ring 8, and 8 bottom cross-sectional areas of resets ring are less than the top cross-sectional area, through setting up resets ring 8 between lantern ring 41 and the well drilling, when coring drill pipe 3 when boring downwards, generate friction between resets ring 8 and the well drilling, make lantern ring 41 rebound, when needing to coring rebound, generate friction between resets ring 8 and the well drilling can make the fixed more stable of core.
All be the oblique angle bottom the pole 42 and first dead lever 43 top to the support, and the use of mutually supporting, locating piece 7 is close to one side each other and has been seted up the oblique angle, move the oblique angle setting of pole 42 and first dead lever 43 through the support, can conveniently move pole 42 and drive first dead lever 43 and be close to each other to drive stopper 46 joint core, through the oblique angle setting of locating piece 7, can play the purpose of the disconnected core of clamp and lifting core, can also make coring drill pipe 3 when boring downwards simultaneously, play the reset capability to first dead lever 43.
The pressure sensor module 9 is used for measuring the pressure of stopper 46 department centre gripping, ultrasonic emission module 10 and ultrasonic receiving module 11 are used for measuring the distance between lantern ring 41 and the coring drill pipe 3, data processing module 12 is used for handling the data of pressure sensor module 9, ultrasonic emission module 10 and ultrasonic receiving module 11, according to parameter setting module 13 data comparison, generate the calculated result, parameter setting module 13 is used for inputing parameter data, display module 14 is used for producing the calculated result to data processing module 12 and showing, can pass through pressure sensor module 9, ultrasonic emission module 10 and ultrasonic receiving module 11 measuring data, whether quick judgement is fixed the chucking to the core.
The data processing module 12 is configured with a processing policy, which is: the method comprises the steps of firstly setting a coring volume parameter and a ratio of gravity to mass, bringing the volume parameter and the ratio of gravity to mass into a first algorithm to calculate the weight of an object, bringing the weight of the object into a second algorithm to calculate required clamping force, comparing the clamping force with data measured by an ultrasonic transmitting module 10 and an ultrasonic receiving module 11, coring or adjusting according to display data in a display module 14, conveniently adjusting in time according to the measured data, and avoiding the problem of time waste caused by the fact that a core is not in a coring drill pipe 3.
The first algorithm is configured to: g ═ mg, where G is the object gravity, m is the object mass, G is the ratio of gravity to mass, the weight of the object is measured, and the second algorithm is configured to: n is G/2 μ, where N is the weight of the object to be measured, G is the clamping force, and μ is the friction factor between the object and the clamped object.
The measurement system further comprises an execution module configured with an execution policy, the execution policy comprising: when the clamping force is smaller than the measuring pressure, the clamping force is extremely tight, when the clamping force is equal to the measuring pressure, the clamping force is tight, and when the clamping force is larger than the measuring pressure, the clamping force is loose;
when the force is extremely tight and tight, the coring is continued, and when the force is loose, the coring is timely adjusted;
the ultrasonic receiving module 11 is configured with an adjustment strategy, wherein the adjustment strategy comprises that when the distance is 0, the resisting force is superstrong, when the distance is 0-X (excluding 0), the resisting force is strong, and when the distance is more than X, the resisting force is none;
x is the distance of the pole 42 and the first dead lever 43 contact of just, when the distance is 0-X (including 0), and the clamping-force is effective, continues to get the core, when the distance is more than X, and the clamping-force is invalid, and timely adjustment can make things convenient for preliminary judgement whether can fix the core, prevents that the core sample from not having the fixed core at the beginning, makes core sample operating speed grow.
The working principle is as follows: when the core drill pipe 3 drills downwards, friction is generated between the reset ring 8 and the drilled well, so that the sleeve ring 41 moves upwards, the sleeve ring 41 drives the abutting rod 42 to move upwards, when the abutting rod 42 is separated from the surface of the first fixing rod 43, the bottom rock or impurities abut against the positioning block 7, the positioning block 7 is forced to drive the first fixing rod 43 to move away from each other, the first fixing rod 43 drives the second fixing rod 45 and the limiting block 46 to move away from each other, so that the limiting block 46 enters the groove 6, when a rock core of the rock needs to be taken out upwards, the drill rod 1 is pulled upwards, the drill rod 1 drives the connecting pipe 2 and the core drill pipe 3 to move upwards, the sleeve ring 41 drives the sleeve ring 41 to move downwards through the friction force between the reset ring 8 and the drilled well, the sleeve ring 41 drives the abutting rod 42 to abut against the first fixing rod 43, so that the first fixing rod 43 approaches to each other, and the first fixing rod 43 slides on the surface of the sliding rod 44, drive second dead lever 45 and stopper 46 and be close to each other, make the rubber pad 5 on stopper 46 surface fixed core, locating piece 7 presss from both sides absolutely and holds in the palm the end to the core bottom simultaneously, when the dynamics is special tight and tight, continue to get the core, when the dynamics is the pine, in time adjust the core position, when the distance is 0-X (including 0), the clamping-force is effective, continue to get the core, when the distance is more than X, the clamping-force is invalid, in time adjust the core position to increase the stability that the core upwards drawed.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a coal bed gas well rope coring drilling equipment, includes drilling rod (1), connecting pipe (2) and coring drill pipe (3), its characterized in that: the bottom of the drill rod (1) is in threaded connection with the top of the connecting pipe (2), the bottom of the connecting pipe (2) is in threaded connection with the top of the coring drill pipe (3), the surface of the connecting pipe (2) is sleeved with a limiting structure (4), and the bottom of the limiting structure (4) penetrates into the coring drill pipe (3) and is matched with the inner wall of the coring drill pipe (3) for use;
a measuring system is arranged in the core drilling device and comprises a pressure sensor module (9), an ultrasonic transmitting module (10), an ultrasonic receiving module (11), a data processing module (12), a parameter setting module (13) and a display module (14).
2. The rope coring drilling device for the coal-bed gas well as the claim 1 is characterized in that: limiting structure (4) move pole (42), two including lantern ring (41) and two supports move pole (42) top respectively with lantern ring (41) bottom both sides fixed connection, the contact has first dead lever (43) bottom to support pole (42), the equal swing joint in inside top of first dead lever (43) and bottom has slide bar (44), slide bar (44) both sides all with the inside fixed connection of coring drill pipe (3), two first dead lever (43) are close to one side top and the equal fixedly connected with second dead lever (45) in bottom each other, second dead lever (45) are kept away from first dead lever (43) one side and are run through coring drill pipe (3) and extend to inside coring drill pipe (3), first dead lever (43) one side fixedly connected with stopper (46) is kept away from in second dead lever (45).
3. The rope coring drilling device for the coal-bed gas well as the claim 2 is characterized in that: stopper (46) keep away from second dead lever (45) one side fixedly connected with rubber pad (5), core drill pipe (3) inner wall has been seted up and has been used recess (6) with stopper (46) and rubber pad (5) cooperation.
4. The rope coring drilling device for the coal-bed gas well as the claim 3 is characterized in that: first dead lever (43) bottom fixedly connected with locating piece (7), locating piece (7) are close to one side each other and are run through coring drill pipe (3) and extend to inside coring drill pipe (3), and use with stopper (46) and rubber pad (5) cooperation.
5. The rope coring drilling device for the coal-bed gas well as the claim 2 is characterized in that: the top of the surface of the lantern ring (41) is fixedly connected with a reset ring (8), and the cross sectional area of the bottom of the reset ring (8) is smaller than that of the top.
6. The rope coring drilling device for the coal-bed gas well as the claim 4 is characterized in that: the bottom of the pushing rod (42) and the top of the first fixing rod (43) are oblique angles and are matched with each other for use, and the oblique angles are formed at one side, close to each other, of the positioning block (7).
7. The rope coring drilling device for the coal-bed gas well as the claim 2 is characterized in that: the pressure sensor module (9) is used for measuring the pressure of stopper (46) department centre gripping, ultrasonic wave emission module (10) and ultrasonic wave receiving module (11) are used for measuring the distance between the lantern ring (41) and the coring drill pipe (3), data processing module (12) are used for handling the data of pressure sensor module (9), ultrasonic wave emission module (10) and ultrasonic wave receiving module (11), according to parameter setting module (13) data comparison, generate the calculated result, parameter setting module (13) are used for inputing parameter data, display module (14) are used for producing the calculated result to data processing module (12) and show.
8. The measurement system of the coalbed methane well rope coring drilling device as set forth in claim 7, wherein: the data processing module (12) is configured with a processing policy, the processing policy being: setting a coring volume parameter and a gravity-mass ratio, substituting the volume parameter and the gravity-mass ratio into a first algorithm to calculate the weight of an object, substituting the weight of the object into a second algorithm to calculate required clamping force, comparing the clamping force with data measured by an ultrasonic transmitting module (10) and an ultrasonic receiving module (11), and coring or adjusting according to display data in a display module (14).
9. The measurement system of the coalbed methane well rope coring drilling device as set forth in claim 7, wherein: the first algorithm is configured to: g ═ mg, where G is the weight of the object, m is the mass of the object, and G is the ratio of the weight to the mass, and the weight of the object is measured, the second algorithm is configured to: n is G/2 μ, where N is the weight of the object to be measured, G is the clamping force, and μ is the friction factor between the object and the clamped object.
10. The measurement system of a coalbed gas well wireline coring drilling device of claim 9, further comprising an executive module configured with an executive strategy comprising: when the clamping force is smaller than the measuring pressure, the clamping force is extremely tight, when the clamping force is equal to the measuring pressure, the clamping force is tight, and when the clamping force is larger than the measuring pressure, the clamping force is loose;
when the force is extremely tight and tight, the coring is continued, and when the force is loose, the coring is timely adjusted;
the ultrasonic receiving module (11) is configured with an adjusting strategy, wherein the adjusting strategy comprises that when the distance is 0, the resisting force is superstrong, when the distance is 0-X (excluding 0), the resisting force is strong, and when the distance is more than X, the resisting force is none;
x is the distance between the pushing rod (42) and the first fixing rod (43) which are just contacted, when the distance is 0-X (including 0), the clamping force is effective, the core is continuously taken, and when the distance is more than X, the clamping force is ineffective and is timely adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365814.1A CN114016943A (en) | 2021-11-18 | 2021-11-18 | Coal bed gas well rope coring drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365814.1A CN114016943A (en) | 2021-11-18 | 2021-11-18 | Coal bed gas well rope coring drilling device |
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| Publication Number | Publication Date |
|---|---|
| CN114016943A true CN114016943A (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111365814.1A Withdrawn CN114016943A (en) | 2021-11-18 | 2021-11-18 | Coal bed gas well rope coring drilling device |
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| Country | Link |
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| CN (1) | CN114016943A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233227A (en) * | 2022-02-24 | 2022-03-25 | 陕西太合智能钻探有限公司 | Sealing device for core drill |
| CN114233226A (en) * | 2022-02-28 | 2022-03-25 | 陕西太合智能钻探有限公司 | Mining sealed core drill |
| CN115749653A (en) * | 2022-12-21 | 2023-03-07 | 青岛地质工程勘察院(青岛地质勘查开发局) | Drilling sampling device with core protection function for mine exploration |
-
2021
- 2021-11-18 CN CN202111365814.1A patent/CN114016943A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233227A (en) * | 2022-02-24 | 2022-03-25 | 陕西太合智能钻探有限公司 | Sealing device for core drill |
| CN114233226A (en) * | 2022-02-28 | 2022-03-25 | 陕西太合智能钻探有限公司 | Mining sealed core drill |
| CN114233226B (en) * | 2022-02-28 | 2022-05-24 | 陕西太合智能钻探有限公司 | Mining sealed core drill |
| CN115749653A (en) * | 2022-12-21 | 2023-03-07 | 青岛地质工程勘察院(青岛地质勘查开发局) | Drilling sampling device with core protection function for mine exploration |
| CN115749653B (en) * | 2022-12-21 | 2023-09-12 | 青岛地质工程勘察院(青岛地质勘查开发局) | Drilling sampling device with core protection function for mine exploration |
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Application publication date: 20220208 |