CN111577181A - Hydraulic propelling rotary type rope coring drilling system and coring method thereof - Google Patents
Hydraulic propelling rotary type rope coring drilling system and coring method thereof Download PDFInfo
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- CN111577181A CN111577181A CN202010365681.7A CN202010365681A CN111577181A CN 111577181 A CN111577181 A CN 111577181A CN 202010365681 A CN202010365681 A CN 202010365681A CN 111577181 A CN111577181 A CN 111577181A
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- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
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- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
- E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being specially adapted for operation under water
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Abstract
The invention discloses a hydraulic propelling rotary rope coring drilling system and a coring method thereof, wherein the hydraulic propelling rotary rope coring drilling system is connected with a drill rod; comprises a coring outer pipe assembly and a coring inner pipe assembly which is put into or put out of the coring outer pipe assembly through a rope fisher with a steel wire rope; the top of the coring outer tube assembly is communicated with a drill rod; the coring inner tube assembly comprises a rope fishing mechanism, a hanging mechanism, a shearing sliding mechanism, a sealing mechanism, a high-speed rotary tube and a coring device mechanism which are sequentially connected from top to bottom; the high-speed rotary pipe is driven by high-pressure slurry in the drill rod to rotate, unlock and shear the sliding mechanism, so that the high-speed rotary pipe can slide up and down simultaneously, and the coring device mechanism is driven to rotate to drill into the stratum to obtain the cylindrical sample. The invention designs a simple and reliable hydraulic propelling rotary drilling system, drives a high-speed rotary pipe by means of high-pressure slurry in a drill rod, pushes a coring mechanism to perform rotary coring drilling, and solves the problems of low core sampling rate and low efficiency in complex stratum drilling.
Description
Technical Field
The invention relates to the field of drilling, in particular to a hydraulic propelling rotary rope coring drilling system and a coring method thereof, which are suitable for drilling coring construction of lakes, rivers, oceans and the like.
Background
With the rapid development of national economy and the implementation of national ocean strategy, the exploration work tasks of water areas, particularly ocean resources are greatly increased, drilling coring is the only means for acquiring seabed material data, and how to efficiently acquire seabed high-quality geological samples has great significance for national ocean scientific research and energy development.
At present, the research on the marine exploration drilling coring technology in China just starts, the engineering practice is very limited, and particularly for the drilling coring of seabed bedrock, the core sampling rate is low, and the drilling efficiency is very low.
Therefore, how to provide an efficient wireline coring drilling system and a coring method thereof under a riser-free working condition is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a hydraulic propelling rotary rope coring drilling system, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic propelling rotary rope coring drilling system is connected with a drill rod; the method comprises the following steps: the core-taking outer pipe assembly and the core-taking inner pipe assembly are put in or put out of the core-taking outer pipe assembly through a rope fisher with a steel wire rope;
the top of the coring outer tube assembly is communicated with the drill rod;
the coring inner tube assembly comprises a rope fishing mechanism, a hanging mechanism, a shearing sliding mechanism, a sealing mechanism, a high-speed rotary tube and a coring device mechanism which are sequentially connected from top to bottom; the rope fishing mechanism is used for being connected with the rope fisher; the hanging mechanism is used for connecting the rope fishing mechanism and the shearing sliding mechanism; the sealing mechanism is used for connecting the shearing sliding mechanism and the high-speed rotary pipe and forming a sealed space to obtain mud pressure; the high-speed rotary pipe is driven by high-pressure slurry in the drill rod to rotate and unlock the shearing sliding mechanism, so that the high-speed rotary pipe can simultaneously slide up and down, and the coring device mechanism is driven to rotate to drill into the stratum to obtain the cylindrical sample.
Through the technical scheme, the hydraulic propelling rotary drilling system is simple and reliable, the high-speed rotary pipe is driven by high-pressure slurry in the drill rod, the core taking mechanism is pushed to carry out rotary coring drilling, the problems of low core taking rate and low efficiency in complex stratum drilling are solved, and the hydraulic propelling rotary drilling system has a positive promoting effect on deep sea scientific research and exploration industries in China.
Preferably, in the above hydraulic propelling rotary rope core drilling system, the rope fishing mechanism comprises a rope fishing spearhead, a sliding tube, a spring, an elastic clip and an elastic clip seat; the rope fishing spearhead is connected to the sliding pipe through an open elastic pin; the spring and the elastic clamp are arranged in the elastic clamp seat, the elastic clamp and the elastic clamp seat are connected through an open elastic pin, and the spring is in a tensioned state to expand the elastic clamp and is clamped and positioned with the inner wall of the coring outer tube assembly; the elastic clamping seat is connected with the suspension mechanism through threads. The anti-twisting function of the high-speed rotary pipe can be realized through the arrangement of the elastic clamp.
Preferably, in the above hydraulic propelling rotary rope core drilling system, the suspension mechanism comprises a suspension ring and a connection seat; the suspension ring is sleeved on the elastic clamping seat, and the connecting seat and the elastic clamping seat are connected through threads and clamp and fix the suspension ring. The connecting structure is stable and reliable.
Preferably, in the above hydraulic propelling rotary rope coring drilling system, the shearing sliding mechanism includes a guide pipe outer sleeve, a limit joint, a guide pipe and a shearing pin; one end of the guide pipe outer sleeve is connected with the connecting seat through threads; the limiting joint is connected with the other end of the guide pipe outer sleeve through threads; the guide pipe is coaxially sleeved inside the guide pipe outer sleeve and is in sliding connection with the limiting joint, so that the guide pipe and the guide pipe outer sleeve can axially slide; the shearing pin is installed on the shearing hole of the guide pipe outer sleeve through threads and is inserted into the end side wall of the guide pipe. The guide pipe and the guide pipe are sleeved in a relative static state before core drilling, a shearing pin is cut off during core drilling, the guide pipe cannot rotate relative to the guide pipe outer sleeve but can freely slide up and down, when the high-speed rotating pipe drives the coring mechanism to enter stratum core drilling, the guide pipe is driven to slide downwards, when the high-speed rotating pipe drives the coring mechanism to enter a limiting joint, one-time core drilling is completed, and the limiting joint has a locking function on the coring inner pipe assembly and plays a limiting role.
Preferably, in the above hydraulic propelling rotary rope coring drilling system, the sealing assembly mechanism includes a sealing upper seat, a sealing group and a sealing lower seat; the sealing upper seat is connected with the guide pipe through threads; the sealing group is sleeved on the sealing upper seat; the lower sealing seat is connected with the upper sealing seat through threads and clamps and fixes the sealing group, and the lower sealing seat is connected with the high-speed rotary pipe through threads. The sealing mechanism can freely slide up and down in the sealing outer pipe to form a sealing space, and thus, the mud pressure is obtained, the high-speed rotary pipe is driven, and the coring mechanism is pushed to rotate for coring drilling.
Preferably, in the hydraulic propelling rotary rope coring drilling system, the coring mechanism comprises an outer pipe joint, a single action assembly, an outer pipe, a core clamping assembly, a drill bit, an inner pipe and a reamer; the outer pipe joint is connected with the high-speed rotary pipe through threads; one end of the single-acting assembly is connected with the outer pipe joint through threads; one end of the outer pipe is connected with the single-action assembly; one end of the core clamping assembly is connected with the other end of the outer pipe through threads; the drill bit is connected with the other end of the rock core clamping assembly through threads; the inner pipe is coaxially sleeved inside the outer pipe, and one end of the inner pipe is fixedly connected with the single-action assembly; the reamer is fixedly connected with the other end of the inner pipe. The core drilling sampling can be effectively realized.
Preferably, in the hydraulic propelling rotary rope coring drilling system, the coring outer tube assembly comprises a drill rod joint, a snapping chamber, a seat ring chamber, a sealing outer tube, a centralizer and a coring bit which are sequentially connected through threads; the drill rod joint is connected with the drill rod through threads. The coring outer tube assembly can be effectively connected with the coring inner tube assembly in a matching manner.
Preferably, in the hydraulic propelling rotary rope coring drilling system, a seat ring is sleeved in the seat ring chamber; the seat ring is close to the connecting end of the elastic clamping chamber and the seat ring chamber. The stability and the sealed effect of connection structure can further be improved.
Preferably, in the hydraulic propelling rotary rope coring drilling system, the elastic clamp is arranged in the elastic clamp chamber, so that the anti-twisting function of the high-speed rotary pipe can be realized.
The invention also provides a coring method of the hydraulic propelling rotary rope coring drilling system, which comprises the following steps:
s1, assembling the coring inner tube assembly, putting the coring inner tube assembly into a drill rod by using a rope fisher with a steel wire rope, and finally entering the coring outer tube assembly to finish the assembly of the drilling tool assembly;
s2, releasing the clamp of the rope fisher through the clamp releasing device, lifting the fisher out, starting a mud pump circulating system and starting coring;
s3, adjusting the discharge capacity of a slurry pump, driving a high-speed rotary pipe to shear a shear pin by means of slurry pressure, and pushing a coring mechanism to rotate for coring drilling;
s4, after the set coring stroke is finished, the pressure of the slurry pump suddenly drops in a short time through the pressure relief hole, and the coring drilling is finished;
s5, putting the rope fisher into the drill rod, and lifting the coring inner tube assembly away from the ground layer through the rope fishing system to finish coring operation;
and S6, starting a slurry pump, and sweeping the hole of the coring outer tube assembly to the next coring position to prepare for the next coring operation.
According to the technical scheme, compared with the prior art, the hydraulic propelling rotary rope coring drilling system and the coring method thereof are designed, the simple and reliable hydraulic propelling rotary drilling system is designed, the high-speed rotary pipe is driven by high-pressure slurry in the drill pipe, the core taking mechanism is pushed to perform rotary coring drilling, the problems of low core taking rate and low efficiency in complex stratum drilling are solved, and the system and the method have a positive promoting effect on deep sea scientific research and exploration industries in China.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the external structure provided by the present invention;
FIG. 2 is a cross-sectional view of the coring outer tube assembly provided by the present invention;
FIG. 3 is a cross-sectional view of the coring internal tube assembly provided by the present invention;
FIG. 4 is an enlarged view, partially in section, of the connection of the cable fishing mechanism and the hitch provided by the present invention;
FIG. 5 is an enlarged view of a portion of the suspension mechanism, shear slide mechanism, seal mechanism and high speed rotary pipe coupling provided in accordance with the present invention;
FIG. 6 is an enlarged view, partially in section, of the high speed rotary tube and coring mechanism connection provided by the present invention.
Wherein:
1-a drill pipe joint;
2-a cartridge chamber;
3-a seat ring;
4-a seat ring chamber;
5-sealing the outer tube;
6-a centralizer;
7-coring bit;
8-a rope fishing mechanism;
9-a suspension mechanism;
10-a shear slide mechanism;
11-a sealing mechanism;
12-a high speed rotary pipe;
13-a corer mechanism;
14-fishing spearhead with rope;
15-a sliding tube;
16-a spring;
17-a bullet card;
18-cartridge holder;
19-a suspension ring;
20-a connecting seat;
21-shear pins;
22-a guide tube;
23-guiding pipe outer sleeve;
24-a spacing joint;
25-sealing the upper seat;
26-a sealing group;
27-sealing the lower seat;
28-outer tube joint;
29-single-action assembly;
30-an outer tube;
31-an inner tube;
32-a reamer;
33-core gripping assembly;
34-bit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the accompanying drawings 1 to 6, the embodiment of the invention discloses a hydraulic propelling rotary type rope coring drilling system which is connected with a drill rod; the method comprises the following steps: the core-taking outer pipe assembly and the core-taking inner pipe assembly are put in or put out of the core-taking outer pipe assembly through a rope fisher with a steel wire rope;
the top of the coring outer tube assembly is communicated with a drill rod;
the coring inner tube assembly comprises a rope fishing mechanism 8, a hanging mechanism 9, a shearing sliding mechanism 10, a sealing mechanism 11, a high-speed rotary tube 12 and a coring device mechanism 13 which are sequentially connected from top to bottom; the rope fishing mechanism 8 is used for connecting with a rope fishing device; the hanging mechanism 9 is used for connecting the rope fishing mechanism 8 and the shearing sliding mechanism 10; the sealing mechanism 11 is used for connecting the shearing sliding mechanism 10 and the high-speed rotary pipe 12 and forming a sealing space to obtain slurry pressure; the high-speed rotary pipe 12 is driven by high-pressure slurry in the drill rod to rotate to unlock the shearing sliding mechanism 10, so that the high-speed rotary pipe 12 can simultaneously slide up and down and drive the coring device mechanism 13 to rotate and drill into the stratum to obtain a cylindrical sample.
In order to further optimize the above technical solution, the rope fishing mechanism 8 includes a rope fishing spearhead 14, a sliding tube 15, a spring 16, an elastic clip 17 and an elastic clip seat 18; the rope fishing spearhead 14 is connected to the sliding tube 15 through a split elastic pin; the spring 16 and the elastic clamp 17 are arranged in the elastic clamp seat 18, the elastic clamp 17 and the elastic clamp seat 18 are connected through an elastic pin with an opening, and the spring 16 is in a tensioned state to prop the elastic clamp 17 open and is clamped and positioned with the inner wall of the coring outer tube assembly; the elastic card 17 seat is connected with the suspension mechanism 9 through threads.
In order to further optimize the above technical solution, the suspension mechanism 9 comprises a suspension ring 19 and a connection seat 20; the suspension ring 19 is sleeved on the elastic clamping seat 18, and the connecting seat 20 and the elastic clamping seat 18 are connected through threads and tightly clamp and fix the suspension ring 19.
In order to further optimize the technical scheme, the shearing sliding mechanism 10 comprises a guide pipe outer sleeve 23, a limiting joint 24, a guide pipe 22 and a shearing pin 21; one end of the guide pipe outer sleeve 23 is connected with the connecting seat 20 through threads; the limit joint 24 is connected with the other end of the guide pipe outer sleeve 23 through threads; the guide tube 22 is coaxially sleeved inside the guide tube outer sleeve 23 and is in sliding connection with the limiting joint 24, so that the guide tube 22 and the guide tube outer sleeve 23 can axially slide; the shear pin 21 is threadedly mounted in a shear hole of the guide tube housing 23 and inserted into the end side wall of the guide tube 22.
In order to further optimize the above technical solution, the seal assembly mechanism 11 comprises a seal upper seat 25, a seal group 26 and a seal lower seat 27; the upper sealing seat 25 is connected with the guide pipe 22 through threads; the sealing group 26 is sleeved on the sealing upper seat 25; the lower sealing seat 27 is connected with the upper sealing seat 25 through threads and clamps and fixes the sealing group 26, and the lower sealing seat 27 is connected with the high-speed rotary pipe 12 through threads.
In order to further optimize the above technical solution, the coring mechanism 13 comprises an outer tube joint 28, a single action assembly 29, an outer tube 30, a core gripping assembly 32, a drill bit 34, an inner tube 31 and a reamer 33; the outer pipe joint 28 is connected with the high-speed rotary pipe 12 through threads; one end of the single-acting component 29 is connected with the outer pipe joint 28 through threads; one end of the outer pipe 30 is connected with the single-action assembly 29; one end of the core clamping assembly 32 is connected with the other end of the outer pipe 30 through threads; the drill bit 34 is connected with the other end of the core clamping assembly 32 through threads; the inner tube 31 is coaxially sleeved inside the outer tube 30, and one end of the inner tube is fixedly connected with the single-action component 29; the reamer 33 is fixedly connected to the other end of the inner tube 31.
In order to further optimize the technical scheme, the coring outer tube assembly comprises a drill rod joint 1, an elastic clamping chamber 2, a seat ring chamber 4, a sealing outer tube 5, a centralizer 6 and a coring bit 7 which are sequentially connected through threads; the drill rod joint 1 is connected with a drill rod through threads.
In order to further optimize the technical scheme, the seat ring chamber 4 is internally sleeved with the seat ring 3; the seat ring 3 is close to the connecting end of the elastic clamping chamber 2 and the seat ring chamber 4.
In order to further optimize the technical scheme, the elastic clamp 17 is clamped in the elastic clamp chamber 2, so that the anti-twisting function of the high-speed rotary pipe 12 can be realized.
The coring method of the hydraulic propelling rotary rope coring drilling system provided by the invention comprises the following steps:
s1, assembling the coring inner tube assembly, putting the coring inner tube assembly into a drill rod by using a rope fisher with a steel wire rope, and finally entering the coring outer tube assembly to finish the assembly of the drilling tool assembly;
s2, releasing the clamp of the rope fisher through the clamp releasing device, lifting the fisher out, starting a mud pump circulating system and starting coring;
s3, adjusting the discharge capacity of a slurry pump, driving the high-speed rotary pipe 12 to shear the shear pin 21 by means of slurry pressure, and pushing the coring mechanism 13 to rotate for coring drilling;
s4, after the set coring stroke is finished, the pressure of the slurry pump suddenly drops in a short time through the pressure relief hole, and the coring drilling is finished;
s5, putting the rope fisher into the drill rod, and lifting the coring inner tube assembly away from the ground layer through the rope fishing system to finish coring operation;
and S6, starting a slurry pump, and sweeping the hole of the coring outer tube assembly to the next coring position to prepare for the next coring operation.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hydraulic propelling rotary rope coring drilling system is connected with a drill rod; it is characterized by comprising: the core-taking outer pipe assembly and the core-taking inner pipe assembly are put in or put out of the core-taking outer pipe assembly through a rope fisher with a steel wire rope;
the top of the coring outer tube assembly is communicated with the drill rod;
the coring inner tube assembly comprises a rope fishing mechanism (8), a hanging mechanism (9), a shearing sliding mechanism (10), a sealing mechanism (11), a high-speed rotary tube (12) and a coring device mechanism (13) which are sequentially connected from top to bottom; the rope fishing mechanism (8) is used for being connected with the rope fishing device; the suspension mechanism (9) is used for connecting the rope fishing mechanism (8) and the shearing sliding mechanism (10); the sealing mechanism (11) is used for connecting the shearing sliding mechanism (10) and the high-speed rotary pipe (12) and forming a sealed space to obtain mud pressure; the high-speed rotary pipe (12) is driven by high-pressure slurry in the drill rod to rotate to unlock the shearing sliding mechanism (10), so that the high-speed rotary pipe (12) can slide up and down simultaneously and drive the coring device mechanism (13) to drill in a stratum in a rotary mode to obtain a cylindrical sample.
2. A hydraulic pusher rotary wireline core drilling system according to claim 1 characterized in that the wireline fishing mechanism (8) comprises wireline fishing spearhead (14), sliding tube (15), spring (16), snap-in (17) and snap-in seat (18); the rope fishing spearhead (14) is connected to the sliding tube (15) through a split elastic pin; the spring (16) and the elastic clamp (17) are arranged in the elastic clamp seat (18), the elastic clamp (17) and the elastic clamp seat (18) are connected through an open elastic pin, and the spring (16) is in a tightened state to prop the elastic clamp (17) open and is clamped and positioned with the inner wall of the coring outer tube assembly; the elastic clamp (17) seat is connected with the suspension mechanism (9) through threads.
3. Hydraulic advancing rotary wireline core drilling system according to claim 2, characterized in that the suspension means (9) comprises a suspension ring (19) and a connection socket (20); the suspension ring (19) is sleeved on the elastic clamping seat (18), and the connecting seat (20) is connected with the elastic clamping seat (18) through threads and clamps and fixes the suspension ring (19).
4. Hydraulic push rotary wireline core drilling system according to claim 3, characterized in that the shear slide mechanism (10) comprises a guide tube housing (23), a limit joint (24), a guide tube (22) and a shear pin (21); one end of the guide pipe outer sleeve (23) is connected with the connecting seat (20) through threads; the limiting joint (24) is connected with the other end of the guide pipe outer sleeve (23) through threads; the guide pipe (22) is coaxially sleeved inside the guide pipe outer sleeve (23) and is in sliding connection with the limiting joint (24), so that the guide pipe and the guide pipe outer sleeve (23) can axially slide; the shearing pin (21) is installed on the shearing hole of the guide pipe outer sleeve (23) through threads and is inserted into the end side wall of the guide pipe (22).
5. Hydraulic pusher rotary wireline core drilling system according to claim 4, characterized in that the sealing assembly means (11) comprises a sealing upper seat (25), a sealing group (26) and a sealing lower seat (27); the sealing upper seat (25) is connected with the guide pipe (22) through threads; the sealing group (26) is sleeved on the sealing upper seat (25); the lower sealing seat (27) is connected with the upper sealing seat (25) through threads and clamps and fixes the sealing group (26), and the lower sealing seat (27) is connected with the high-speed rotary pipe (12) through threads.
6. A hydraulic pusher rotary wireline coring drilling system as in claim 5 wherein the coring mechanism (13) comprises an outer tubular joint (28), a single action assembly (29), an outer tubular (30), a core gripping assembly (32), a drill bit (34), an inner tubular (31) and an underreamer (33); the outer pipe joint (28) is connected with the high-speed rotary pipe (12) through threads; one end of the single-action component (29) is connected with the outer pipe joint (28) through threads; one end of the outer pipe (30) is connected with the single-action component (29); one end of the core clamping assembly (32) is connected with the other end of the outer pipe (30) through threads; the drill bit (34) is connected with the other end of the core clamping assembly (32) through threads; the inner pipe (31) is coaxially sleeved inside the outer pipe (30), and one end of the inner pipe is fixedly connected with the single-action component (29); the reamer (33) is fixedly connected with the other end of the inner pipe (31).
7. The hydraulic propelling rotary rope coring drilling system as claimed in claim 6, wherein the coring outer tube assembly comprises a drill rod joint (1), a bullet clamping chamber (2), a seat ring chamber (4), a sealing outer tube (5), a centralizer (6) and a coring bit (7) which are connected in sequence through threads; the drill rod joint (1) is connected with the drill rod through threads.
8. The hydraulic propelling rotary rope coring drilling system as set forth in claim 7, wherein the seat ring chamber (4) is internally sleeved with a seat ring (3); the seat ring (3) is close to the connection end of the elastic clamping chamber (2) and the seat ring chamber (4).
9. The hydraulic propelling rotary rope coring drilling system as set forth in claim 7 or 8, wherein the said bullet catch (17) is stuck in the said bullet catch chamber (2) to realize the function of anti-twisting the said high speed rotary pipe (12).
10. A coring method of a hydraulically propelled rotary wireline coring drilling system as described in any one of claims 1-9, comprising the steps of:
s1, assembling the coring inner tube assembly, putting the coring inner tube assembly into a drill rod by using a rope fisher with a steel wire rope, and finally entering the coring outer tube assembly to finish the assembly of the drilling tool assembly;
s2, releasing the clamp of the rope fisher through the clamp releasing device, lifting the fisher out, starting a mud pump circulating system and starting coring;
s3, adjusting the discharge capacity of a slurry pump, driving a high-speed rotary pipe (12) to shear a shear pin (21) by means of slurry pressure, and pushing a coring mechanism (13) to rotate for coring and drilling;
s4, after the set coring stroke is finished, the pressure of the slurry pump suddenly drops in a short time through the pressure relief hole, and the coring drilling is finished;
s5, putting the rope fisher into the drill rod, and lifting the coring inner tube assembly away from the ground layer through the rope fishing system to finish coring operation;
and S6, starting a slurry pump, and sweeping the hole of the coring outer tube assembly to the next coring position to prepare for the next coring operation.
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| CN202010365681.7A CN111577181B (en) | 2020-04-30 | 2020-04-30 | Hydraulic propelling rotary type rope coring drilling system and coring method thereof |
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| CN202010365681.7A CN111577181B (en) | 2020-04-30 | 2020-04-30 | Hydraulic propelling rotary type rope coring drilling system and coring method thereof |
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| CN111577181B CN111577181B (en) | 2022-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112112588A (en) * | 2020-09-08 | 2020-12-22 | 中国地质科学院勘探技术研究所 | Press-in type rope coring drilling tool and coring process method thereof |
| CN112112588B (en) * | 2020-09-08 | 2024-05-14 | 中国地质科学院勘探技术研究所 | Press-in type rope coring drilling tool and coring process method thereof |
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| CN108360993A (en) * | 2018-04-23 | 2018-08-03 | 无锡锡钻地质装备有限公司 | A kind of exploration core plugging notifying mechanism of rope core drilling |
| CN109854195A (en) * | 2018-12-11 | 2019-06-07 | 广州海洋地质调查局 | The rotary coring drilling with keep up pressure method of drilling at the sea |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112588A (en) * | 2020-09-08 | 2020-12-22 | 中国地质科学院勘探技术研究所 | Press-in type rope coring drilling tool and coring process method thereof |
| CN112112588B (en) * | 2020-09-08 | 2024-05-14 | 中国地质科学院勘探技术研究所 | Press-in type rope coring drilling tool and coring process method thereof |
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