CN114991655B - Deep large-diameter annular well drilling system and working method - Google Patents
Deep large-diameter annular well drilling system and working method Download PDFInfo
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- CN114991655B CN114991655B CN202210700038.4A CN202210700038A CN114991655B CN 114991655 B CN114991655 B CN 114991655B CN 202210700038 A CN202210700038 A CN 202210700038A CN 114991655 B CN114991655 B CN 114991655B
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- floating
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- floating rotary
- mud
- rotary table
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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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
- E21B12/00—Accessories for drilling tools
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Abstract
The invention discloses a deep large-diameter annular well drilling system and a working method, and belongs to the field of underground engineering construction equipment. The annular drill bit comprises a central pipe connected with the end part of the drill rod, an input gear connected with the end part of the central pipe, a fixed disc connected with the end part of the central pipe through a thrust ring and hung on the central pipe through the thrust ring, a floating turntable movably connected with the fixed disc, an inner gear ring structure meshed with the input gear arranged in the floating turntable, an inner gear ring structure in the floating turntable and the input gear arranged eccentrically, and a supporting gear arranged between the input gear and the inner gear ring; a tool rest is connected below the floating rotary table, a tool is arranged on the tool rest, the floating rotary table drives the tool on the tool rest to rotate and cut along with the rotation of the input gear, the floating rotary table rotates around the center of the annular well at the same time, and the floating rotary table and the fixed disc are sealed. The construction method is simple in structure and convenient to use, and can be used for construction of deep and large-diameter annular wells.
Description
Technical Field
The invention relates to a deep large-diameter annular well drilling system and a working method, and belongs to the field of underground engineering construction machinery.
Background
Underground engineering is usually threatened by water damage and stratum sinking, and after an annular well is constructed around the underground engineering and a waterproof material and other functional materials are filled in the annular well, the stress of an underground structure and the use environment can be greatly improved. There is therefore a need for mechanical equipment that can be used to construct deep large diameter annular wells.
At present, 1 large-diameter drilling machine with a drill bit diameter of more than 10 meters can be adopted to dig a circular well, the drilling machine is driven to rotate through force transmission of a drill rod, and the maximum drilling diameter reaches 15m. The large-diameter annular well with small construction depth can be driven by a drilling machine to drill by a large-diameter core bit with the depth approximately equal to that of the annular well, or various grooving machines are adopted to complete the construction of the annular well. However, as the depth and the diameter increase, the coring bit is continuously lengthened to become very practical, the grooving depth of the grooving machine is also greatly limited, and the grooving efficiency is low.
The invention content is as follows:
aiming at the defects of the technology, the deep large-diameter annular well drilling system and the working method are provided, the annular well drill bit floating rotary disc is driven through the cooperative work of the drill group, the purpose of drilling the deep large-diameter annular well can be realized, and huge economic benefits and social benefits can be generated.
In order to achieve the technical purpose, the deep large-diameter annular well drilling system comprises a ground drill rig group and a plurality of drilling mechanisms, wherein each drilling machine in the ground drill rig group provides torque for the drilling mechanism connected with the drilling machine through a drill rig rotary table; the annular drill bit comprises a central pipe connected with the end part of the drill rod, the end part of the central pipe is connected with a horizontally arranged input gear through a key, the input gear synchronously rotates along with the central pipe, the end part of the central pipe is connected with a fixed disc through a thrust ring, the fixed disc is hung on the central pipe through the thrust ring and does not rotate along with the rotation of the central pipe, and the fixed disc is matched with an implemented annular well; the fixed disc is movably connected with a floating rotary disc, an inner gear ring structure meshed with the input gear is arranged in the floating rotary disc, the inner gear ring structure in the floating rotary disc and the input gear are eccentrically arranged, so that the floating rotary disc is driven to revolve around the center of the annular well after the input gear and the floating rotary disc rotate in an inner meshing manner, and a supporting gear is arranged between the input gear and the inner gear ring to reduce vibration; the lower part of the floating rotary table is connected with a tool rest, the tool rest is provided with a tool, the floating rotary table drives the tool on the tool rest to rotate and cut along with the rotation of the input gear, the floating rotary table rotates around the center of the annular well, the floating rotary table and the fixed disc are matched semi-semi split sealing structures, and the floating rotary table and the fixed disc are connected in a guiding sealing mode, so that rock debris is prevented from invading.
Further, including the mud circulation system, the mud circulation system includes the mud circulation passageway that sets up in the center tube, be equipped with the mud circulation ring channel of matching between fixed disk and the floating rotary table, be equipped with the fixed disk mud circulation hole of intercommunication mud circulation passageway and mud circulation ring channel in the fixed disk, be equipped with the thick liquid passageway of intercommunication mud circulation ring channel and floating rotary table bottom central authorities floating rotary table mud circulation hole in the floating rotary table, the side department that is close to the thrust collar below the center tube has the mud export, the mud export is located the thrust collar and is equipped with the mud chamber, the mud chamber communicates with fixed disk mud flow through-hole.
Furthermore, the slurry circulation holes of the fixed disc are connected with the slurry through holes in the tool rests, and a slurry outlet is formed when the slurry through holes are distributed to each tool rest, so that slurry is sprayed to a working area of the tool.
A working method using the deep large-diameter annular well drilling system comprises the following steps:
the drill rod is driven by the rotary table of the drilling machine to rotate, the drill rod drives the floating rotary table to rotate through the input gear, the drill rod rotates around the center of the annular well, the rock breaking tool rest fixedly connected with the floating rotary table rotates automatically at the same time, a tool on the tool rest breaks rock soil under the action of drilling pressure and torque, and the broken rock soil is reversely brought to the ground through the pressure of slurry sprayed out of the slurry circulating system, so that the drilling of the deep large-diameter annular well is realized; the mud circulating system pumps mud into an annular groove between the fixed disc and the floating rotary disc from the drill rod, washes the rock surface through a mud outlet beside the tool rest, reflows to a gap between the floating disc and the fixed disc and the stratum, and then continuously rises to flow to the ground through the annular well; or to reverse the mud circulation path in the mud circulation system.
Further, a plurality of tool rests are directly installed at the bottom of the floating rotary table, and the tools installed on the tool rests break rocks along with the rotation of the floating rotary table; the cutter can be rigidly and fixedly connected on the cutter frame, and the rotation rolling rock breaking can also be realized by installing a bearing on the cutter frame.
Further, the floating rotary table is arranged below and is matched with the diameter of the annular well to form a cylindrical ring for balancing weight and guiding, and the height of the floating rotary table is prolonged by installing the cylindrical ring, so that vibration during working is reduced.
Has the beneficial effects that: the annular well drill bit floating rotary table is driven by the cooperative work of the drill group, the purpose of drilling the deep large-diameter annular well can be realized, the structure is simple, the use is convenient, the drilling of the deep large-diameter annular well can be realized only by lengthening the drill rod in the drilling process, the construction is convenient, the cost is low, and the annular well drill bit floating rotary table has great economic benefit and social benefit.
Description of the drawings:
FIG. 1 is a schematic view of the construction of a deep large diameter annular well drilling system of the present invention;
FIG. 2 is a schematic structural view of a drilling mechanism in the drilling system of the deep large diameter annular well of the present invention;
FIG. 3 is a schematic view of the tool holder arrangement in the deep large diameter annular well drilling system of the present invention;
FIG. 4 is a schematic view of the arrangement of the surface rig rotary table in the deep large diameter annular well drilling system of the present invention.
In the figure: 1-a drill rod, 2-a drilling machine turntable, 3-a fixed disc, 4-an input gear, 5-a floating turntable, 6-a tool rest, 7-a supporting gear, 8-a thrust ring, 9-a stratum, 10-a fixed disc mud circulation hole, 11-a floating turntable mud circulation hole, 12-a central pipe and 13-a mud circulation annular groove.
The specific implementation mode is as follows:
embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the deep and large diameter circular well drilling system of the present invention comprises a ground drilling machine group and a plurality of drilling mechanisms, wherein each drilling machine in the ground drilling machine group provides torque to the drilling mechanism connected with the drilling machine group through a drilling machine turntable 2, the drilling machine 1 is connected with the drilling machine turntable 2 arranged on the ground, the drilling machine 1 comprises an active drilling rod and an elongated drilling rod added according to the drilling depth;
the annular drill bit comprises a central tube 12 connected with the end part of the drill rod 1, the end part of the central tube 12 is connected with a horizontally arranged input gear 4 through a key, the input gear 4 synchronously rotates along with the central tube 12, the end part of the central tube 12 is connected with a fixed disc 3 through a thrust ring 8, the fixed disc 3 is hung on the central tube 12 through the thrust ring 8, the fixed disc 3 does not rotate along with the central tube 12, and the fixed disc 3 is matched with an implemented annular well 14; the fixed disc 3 is movably connected with a floating rotary disc 5, an inner gear ring structure meshed with the input gear 4 is arranged in the floating rotary disc 5, the inner gear ring structure in the floating rotary disc 5 and the input gear 4 are eccentrically arranged, so that the floating rotary disc 5 is driven to revolve around the center of the annular well 14 after the input gear 4 and the floating rotary disc 5 rotate in a wheel inner meshing manner, and a supporting gear 7 is arranged between the input gear 4 and the inner gear ring for reducing vibration;
the middle part of the fixed disc 3 is provided with a mounting structure for arranging a thrust ring 8, the end part of the central tube 12 is movably connected with the thrust ring 8 so as to hang the fixed disc 3 on the central tube 12, the floating rotary disc 5 is provided with an inner gear ring above the mounting structure of the fixed disc 3, the inner gear ring is eccentrically arranged relative to the input gear 4, and the input gear 4 and the support gear 7 are arranged side by side to jointly engage with the inner gear ring.
As shown in fig. 3 and 4, a tool rest 6 is connected below the floating rotary disc 5, the tool rest 6 is provided with a tool, the floating rotary disc 5 drives the tool on the tool rest 6 to rotate and cut along with the rotation of the input gear 4, meanwhile, the floating rotary disc 5 rotates around the center of the annular well 14, the floating rotary disc 5 and the fixed disc 3 are matched in a half-and-half sealing structure, the floating rotary disc 5 and the fixed disc 3 are connected through guiding sealing, or outer shells are arranged on the outer sides of the floating rotary disc 5 and the fixed disc 3 as required, so that rock slag is prevented from invading.
The slurry circulation system comprises a slurry circulation system, wherein the slurry circulation system comprises a slurry circulation channel arranged in a central tube 12, a matched slurry circulation annular groove 13 is arranged between a fixed disc 3 and a floating rotary disc 5, a fixed disc slurry flow through hole 10 for communicating the slurry circulation channel with the slurry circulation annular groove 13 is arranged in the fixed disc 3, a slurry channel for communicating the slurry circulation annular groove 13 with a floating rotary disc slurry flow through hole 11 in the center of the bottom of the floating rotary disc 5 is arranged in the floating rotary disc 5, a slurry outlet is arranged at the side, close to a thrust ring 8, below the central tube 12, and is positioned in the thrust ring 8 and is provided with a slurry cavity, and the slurry cavity is communicated with the fixed disc slurry flow through hole 10. The fixed disc slurry flow through holes 10 are connected with the slurry through holes in the tool holders 6, and a slurry outlet is formed at the position where the slurry through holes are dispersed to each tool holder 6, so that the slurry is sprayed to the working area of the tool.
A working method of a deep large-diameter annular well drilling system comprises the following steps:
the drill rod 1 is driven by the rotary table 2 of the drilling machine to rotate, the drill rod 1 drives the floating rotary table 5 to rotate through the input gear 4, the drill rod rotates around the center of the annular well 14, the rock breaking tool rest 6 fixedly connected with the floating rotary table 5 rotates automatically at the same time, a tool on the tool rest 6 breaks rock soil under the action of drilling pressure and torque, and the broken rock soil is reversely brought to the ground through mud pressure sprayed by a mud circulating system, so that the deep and large-diameter annular well 14 is drilled; the mud circulating system pumps mud into an annular groove between the fixed disc 3 and the floating rotary disc 5 from the drill rod 1, washes the rock surface through a mud outlet beside the tool rest 6, returns to a gap between the floating disc 5 and the fixed disc 3 and the stratum, and then continuously rises to flow to the ground through the annular well 14; or to reverse the mud circulation path in the mud circulation system.
A plurality of tool rests 6 are directly arranged at the bottom of the floating rotary disc 5, and the tools arranged on the tool rests 6 break rocks along with the rotation of the floating rotary disc 5; the cutter can be rigidly and fixedly connected on the cutter frame 6, and the self-rotation rolling rock breaking can also be realized by mounting a bearing on the cutter frame 6.
The lower part of the floating rotary table 5 is provided with a cylindrical ring matched with the diameter of the annular well 14 for balancing weight and guiding, and the height of the floating rotary table 5 is prolonged by installing the cylindrical ring, so that the vibration during working is reduced.
Claims (6)
1. A deep major diameter annular well drilling system characterized in that: the ground drilling machine comprises a ground drilling machine group and a plurality of drilling mechanisms, wherein each drilling machine in the ground drilling machine group provides torque for the drilling mechanism connected with the drilling machine group through a drilling machine turntable (2), the drilling rod (1) is connected with the drilling machine turntable (2) arranged on the ground, and the drilling rod (1) comprises a driving drilling rod and a lengthened drilling rod added according to the drilling depth; the annular drill bit comprises a central tube (12) connected with the end part of the drill rod (1), the end part of the central tube (12) is connected with an input gear (4) horizontally arranged through a key, the input gear (4) synchronously rotates along with the central tube (12), the end part of the central tube (12) is connected with a fixed disc (3) through a thrust collar (8), the fixed disc (3) is hung on the central tube (12) through the thrust collar (8), the fixed disc (3) does not rotate along with the central tube (12), and the fixed disc (3) is matched with an implemented annular well (14); the fixed disc (3) is movably connected with a floating rotary disc (5), an inner gear ring structure meshed with the input gear (4) is arranged in the floating rotary disc (5), the inner gear ring structure in the floating rotary disc (5) and the input gear (4) are eccentrically arranged, so that the floating rotary disc (5) is driven to revolve around the center of the annular well (14) after the input gear (4) and the floating rotary disc (5) rotate in an inner gear engagement mode, and a supporting gear (7) is arranged between the input gear (4) and the inner gear ring to reduce vibration; the lower part of the floating rotary table (5) is connected with a tool rest (6), the tool rest (6) is provided with a tool, the floating rotary table (5) drives the tool on the tool rest (6) to rotate and cut along with the rotation of the input gear (4), meanwhile, the floating rotary table (5) rotates around the center of the annular well (14), the floating rotary table (5) and the fixed disc (3) are of a matched half-and-half split sealing structure, and the floating rotary table (5) and the fixed disc (3) are connected through guiding sealing, so that rock slag invasion is prevented.
2. The deep large diameter annular well drilling system of claim 1, wherein: including mud circulation system, mud circulation system includes the mud circulation passageway that sets up in center tube (12), be equipped with the mud circulation ring channel (13) of matching between fixed disk (3) and the carousel of floating (5), be equipped with fixed disk mud circulation hole (10) of intercommunication mud circulation passageway and mud circulation ring channel (13) in fixed disk (3), be equipped with the thick liquid passageway of intercommunication mud circulation ring channel (13) and the carousel mud circulation hole (11) of floating (5) bottom central authorities of carousel of floating (5) in the carousel of floating (5), the side department that center tube (12) below is close to thrust ring (8) opens there is the mud export, the mud export is equipped with the mud chamber in thrust ring (8), the mud chamber communicates with fixed disk mud circulation hole (10).
3. The deep large diameter annular well drilling system of claim 2, wherein: the slurry circulation holes (10) of the fixed disc are connected with the slurry through holes in the tool rests (6), and a slurry outlet is formed when the slurry through holes are distributed to each tool rest (6), so that slurry is sprayed to the working area of the tool.
4. A method of operating a drilling system for a deep large diameter annular well according to any of claims 1 to 3, characterized by the steps of:
the drilling rod (1) is driven by the drilling machine turntable (2) to rotate, the drilling rod (1) drives the floating turntable (5) to rotate through the input gear (4), the floating turntable rotates around the center of the annular well (14), the rock breaking tool rest (6) fixedly connected with the floating turntable (5) rotates automatically at the same time, a tool on the tool rest (6) breaks rock and soil under the action of drilling pressure and torque, and the broken rock and soil are reversely brought to the ground through the pressure of slurry sprayed by the slurry circulating system, so that the annular well (14) with the large diameter is drilled; the mud circulating system pumps mud into an annular groove between the fixed disc (3) and the floating rotary disc (5) from the drill rod (1), then washes a rock surface through a mud outlet beside the tool rest (6), and then flows back to a gap between the floating rotary disc (5) and the fixed disc (3) and a stratum, and then continuously rises to flow to the ground through the annular well (14); or to reverse the mud circulation path in the mud circulation system.
5. The method of operation of claim 4, wherein: a plurality of tool rests (6) are directly arranged at the bottom of the floating rotary table (5), and the tools arranged on the tool rests (6) break rock along with the rotation of the floating rotary table (5); the cutter can be rigidly and fixedly connected on the cutter rest (6), and the self-rotation rolling rock breaking can also be realized by mounting a bearing on the cutter rest (6).
6. The method of operation of claim 4, wherein: the floating rotary table (5) is provided with a cylindrical ring matched with the diameter of the annular well (14) for balancing weight and guiding, and the height of the floating rotary table (5) is prolonged by installing the cylindrical ring, so that the vibration during working is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210700038.4A CN114991655B (en) | 2022-06-20 | 2022-06-20 | Deep large-diameter annular well drilling system and working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210700038.4A CN114991655B (en) | 2022-06-20 | 2022-06-20 | Deep large-diameter annular well drilling system and working method |
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| Publication Number | Publication Date |
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| CN114991655A CN114991655A (en) | 2022-09-02 |
| CN114991655B true CN114991655B (en) | 2023-01-13 |
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| CN202210700038.4A Active CN114991655B (en) | 2022-06-20 | 2022-06-20 | Deep large-diameter annular well drilling system and working method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400641A (en) * | 2011-11-07 | 2012-04-04 | 连云港天明装备有限公司 | Floating device of drilling machine |
| CN204457423U (en) * | 2014-12-17 | 2015-07-08 | 王帆 | Continuous trepan |
| CN211448510U (en) * | 2019-11-29 | 2020-09-08 | 长安大学 | Reverse circulation drilling device |
| CN111677438A (en) * | 2020-03-24 | 2020-09-18 | 江苏航天鸿鹏数控机械有限公司 | High-pressure jet power tool for drilling in ground mine, petroleum, petrochemical and coal bed gas |
| CN111810048A (en) * | 2020-08-29 | 2020-10-23 | 山东益矿钻采科技有限公司 | Hydraulic propeller |
| CN113914802A (en) * | 2021-09-07 | 2022-01-11 | 广州海洋地质调查局 | Offshore casing surge compensation dual-drive three-layer casing drilling coring method |
| CN114086542A (en) * | 2021-10-14 | 2022-02-25 | 深圳市工勘岩土集团有限公司 | Full-rotation and gas-lift reverse circulation combined drilling construction method for large-diameter deep and long rock-socketed pile |
-
2022
- 2022-06-20 CN CN202210700038.4A patent/CN114991655B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400641A (en) * | 2011-11-07 | 2012-04-04 | 连云港天明装备有限公司 | Floating device of drilling machine |
| CN204457423U (en) * | 2014-12-17 | 2015-07-08 | 王帆 | Continuous trepan |
| CN211448510U (en) * | 2019-11-29 | 2020-09-08 | 长安大学 | Reverse circulation drilling device |
| CN111677438A (en) * | 2020-03-24 | 2020-09-18 | 江苏航天鸿鹏数控机械有限公司 | High-pressure jet power tool for drilling in ground mine, petroleum, petrochemical and coal bed gas |
| CN111810048A (en) * | 2020-08-29 | 2020-10-23 | 山东益矿钻采科技有限公司 | Hydraulic propeller |
| CN113914802A (en) * | 2021-09-07 | 2022-01-11 | 广州海洋地质调查局 | Offshore casing surge compensation dual-drive three-layer casing drilling coring method |
| CN114086542A (en) * | 2021-10-14 | 2022-02-25 | 深圳市工勘岩土集团有限公司 | Full-rotation and gas-lift reverse circulation combined drilling construction method for large-diameter deep and long rock-socketed pile |
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| CN114991655A (en) | 2022-09-02 |
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