CN107780854B - Following pipe pressurizing mechanism for ground large-diameter rapid drilling equipment - Google Patents
Following pipe pressurizing mechanism for ground large-diameter rapid drilling equipment Download PDFInfo
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- CN107780854B CN107780854B CN201710762254.0A CN201710762254A CN107780854B CN 107780854 B CN107780854 B CN 107780854B CN 201710762254 A CN201710762254 A CN 201710762254A CN 107780854 B CN107780854 B CN 107780854B
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- drill rod
- sleeve
- rescue
- movable sleeve
- diameter
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- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910020890 PHI 650 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000020057 cognac Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a pipe-following pressurizing mechanism for ground large-diameter rapid hole drilling equipment, which comprises an outer sleeve and an inner sleeve, wherein a drill rod is coaxially arranged in the inner sleeve; the grid bottom plate comprises a fixed short pipe sleeved on the outer side of the drill rod, the diameter of the fixed short pipe is larger than that of the drill rod, and a plurality of radial baffles are welded between the fixed short pipe and the inner wall of the movable sleeve around the circumferential direction; a sealing cover is integrally arranged at the top of the movable sleeve and is in sliding connection with the outer wall of the drill rod, and a supporting ring for limiting the movable sleeve is welded on the drill rod in the movable sleeve; the number of air compressors is effectively reduced, rescue equipment needed in rescue sites is reduced, rescue site arrangement is rapidly completed, rescue time can be greatly shortened in the mine rescue process, and rescue efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of ground drilling emergency, and particularly relates to a heel tube pressurizing mechanism for ground large-diameter rapid drilling equipment.
Background
At present, the ground rapid drilling is a new technology for mine rescue, a 'life channel' is developed for mine rescue, and particularly, the technology is proved to be rapid and obvious in effect, and the intelligent mine disaster and the cognac mine disaster in China are perfectly rescue. However, the opening of the life channel is only one step of mine rescue, and if trapped people are to be saved, the establishment of the escape channel, namely a large-diameter well (the diameter of the well is not smaller than phi 650 mm) is also needed. Currently, the main processes of the escape passage are a positive-circulation pneumatic down-the-hole hammer drilling technology and a reverse-circulation pneumatic down-the-hole hammer drilling technology.
The former needs large air quantity, 8-10 air compressors are needed to be put into, and the cost is high; the latter needs to be provided with a whole set of special tools, and has higher requirements on stratum conditions, great implementation difficulty and higher cost.
Disclosure of Invention
The invention aims to provide a pipe following pressurizing mechanism for ground large-diameter rapid drilling equipment, which effectively reduces the number of air compressors, reduces rescue equipment needed in rescue sites, rapidly completes rescue site arrangement and realizes rapid drilling. The technical scheme adopted for achieving the purpose is as follows:
the pipe following pressurizing mechanism for the ground large-diameter rapid hole drilling equipment comprises an outer sleeve and an inner sleeve, wherein a drill rod is coaxially arranged in the inner sleeve, the drill rod comprises a movable sleeve coaxially sleeved on the outer side of the inner sleeve, the diameter of the movable sleeve is larger than that of the inner sleeve, and a grid bottom plate is coaxially arranged at the inner bottom of the movable sleeve; the grid bottom plate comprises a fixed short pipe sleeved on the outer side of the drill rod, the diameter of the fixed short pipe is larger than that of the drill rod, and a plurality of radial baffles are welded between the fixed short pipe and the inner wall of the movable sleeve around the circumferential direction; the top of the movable sleeve is integrally provided with a sealing cover, the sealing cover is in sliding connection with the outer wall of the inner sleeve, and a supporting ring used for limiting the movable sleeve is welded on a drill rod in the movable sleeve.
Preferably, the pipe-following pressurizing mechanism is located at the top of the down-the-hole hammer impactor under the action of self gravity, and when the pipe-following pressurizing mechanism is located at the topmost position, the distance between the supporting ring and the sealing cover is equal to the length of one section of inner sleeve.
The invention has the beneficial effects that: by adopting the double-sleeve drilling process, the diameter of the inner sleeve is smaller than that of the outer sleeve, and the requirement of a ground air compressor can be reduced by using the inner sleeve. The diameter of the movable sleeve of the follow-up pipe pressurizing mechanism is larger than that of the inner sleeve, and under the condition that the rock debris flow is the same, the movable sleeve is low in flow speed, high in pressure, high in inner sleeve flow speed and low in pressure, so that the pressure difference is ensured, and the rock debris is quickly reversely discharged; meanwhile, in the drilling process, the follow-up pipe pressurizing mechanism can follow up at any time, the pressure difference is always kept, the number of air compressors is effectively reduced, rescue equipment needed in rescue sites is reduced, rescue site arrangement is rapidly completed, rescue time can be greatly shortened in the mine rescue process, and rescue efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of a grid floor;
fig. 3 is a use state diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the pipe following pressurizing mechanism for the ground large-diameter rapid drilling equipment comprises an inner sleeve 1, a drill rod 6 is coaxially arranged in the inner sleeve 1, a movable sleeve 4 is coaxially sleeved outside the inner sleeve 1, the diameter of the movable sleeve 4 is larger than that of the inner sleeve 1, and a grid bottom plate 5 is coaxially and integrally arranged at the inner bottom of the movable sleeve 4; as shown in fig. 2, the grid bottom plate 5 comprises a fixed short pipe 8 sleeved on the outer side of the drill pipe 6, the diameter of the fixed short pipe 8 is larger than that of the drill pipe 6, and a plurality of radial baffles 7 are welded between the fixed short pipe 8 and the inner wall of the movable sleeve 4 around the circumference to form a grid channel; the top of the movable sleeve 4 is integrally provided with a sealing cover 3, the sealing cover 3 is in sliding connection with the outer wall of the inner sleeve 1, and the inner sleeve 1 in the movable sleeve 4 is welded with a supporting ring 2 for limiting the movable sleeve 4.
As shown in fig. 3, the outer casing 11 is used for normal drilling, and the inner casing 1 is smaller than the outer casing 11 in diameter, so that the air amount required for reverse drainage is small, and the requirements of ground equipment can be reduced. When the heel tube pressurizing mechanism 14 is positioned at the topmost position, the distance between the support ring 2 and the top end of the sealing cover 3 is equal to the length of one section of the inner sleeve 1. When the drilling machine is used, the following pipe pressurizing mechanism 14 is located at the top of the down-the-hole hammer impactor 12 under the action of self gravity, the drilling machine and the air compressor are started, compressed air enters the pneumatic down-the-hole hammer 13 through the compressed air channel, the pneumatic down-the-hole hammer 13 is driven to do work and acts on a drill bit at the front end, and meanwhile, the drilling machine drives the pneumatic down-the-hole hammer 13 and the drill bit to rotate to impact, revolve and break rock to drill; compressed air sequentially enters the bottom of a well through a compressed air channel, a pneumatic down-the-hole hammer 13 and a drill bit, and then drives rock scraps to return to the ground through a down-the-hole hammer impactor 12, a well wall annular space, a heel tube pressurizing mechanism 14, a rock scraps anti-discharge channel and a rock scraps slag discharge port 9; in the process of the pneumatic down-the-hole hammer 13 and the drill bit advancing, the pipe-following pressurizing mechanism 14 is always located at the top of the down-the-hole hammer impact 12 under the action of self gravity to move downwards together, when one section of inner sleeve 1 is moved downwards for length, the supporting ring 2 plays a limiting role on the sealing cover 3, then one section of inner sleeve 1 is lowered from a wellhead, the moving range of one section of inner sleeve 1 length is obtained again by the pipe-following pressurizing mechanism 14, and the like until drilling is completed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. The pipe following pressurizing mechanism for the ground large-diameter rapid drilling equipment comprises an outer sleeve and an inner sleeve, wherein a drill rod is coaxially arranged in the inner sleeve; the grid bottom plate comprises a fixed short pipe sleeved on the outer side of the drill rod, the diameter of the fixed short pipe is larger than that of the drill rod, and a plurality of radial baffles are welded between the fixed short pipe and the inner wall of the movable sleeve around the circumferential direction; the top of the movable sleeve is integrally provided with a sealing cover, the sealing cover is in sliding connection with the outer wall of the inner sleeve, and a supporting ring used for limiting the movable sleeve is welded on a drill rod in the movable sleeve.
2. The heel tube supercharging mechanism for the ground large-diameter rapid drilling equipment according to claim 1, wherein the heel tube supercharging mechanism sits on the top of the down-the-hole hammer impactor under the action of self gravity, and when the heel tube supercharging mechanism is located at the topmost position, the distance between the supporting ring and the sealing cover is the length of one inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762254.0A CN107780854B (en) | 2017-08-30 | 2017-08-30 | Following pipe pressurizing mechanism for ground large-diameter rapid drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762254.0A CN107780854B (en) | 2017-08-30 | 2017-08-30 | Following pipe pressurizing mechanism for ground large-diameter rapid drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107780854A CN107780854A (en) | 2018-03-09 |
| CN107780854B true CN107780854B (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710762254.0A Active CN107780854B (en) | 2017-08-30 | 2017-08-30 | Following pipe pressurizing mechanism for ground large-diameter rapid drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780854B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294090B (en) * | 2021-06-11 | 2023-12-12 | 广州海洋地质调查局 | Integrated drilling tubular column suitable for deep water shallow layer hydrate development and drilling method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6843331B2 (en) * | 2001-02-15 | 2005-01-18 | De Boer Luc | Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| CN201531468U (en) * | 2009-10-22 | 2010-07-21 | 吴玮 | Water cycle supercharging device |
| CN202810680U (en) * | 2012-10-15 | 2013-03-20 | 中国石油天然气集团公司 | Well drilling combination device using double-wall drill pipe |
| CN104763368B (en) * | 2015-02-06 | 2017-04-05 | 中煤科工集团西安研究院有限公司 | Major diameter downhole hammer port seal and its reverse circulation construction technique |
| CN207229036U (en) * | 2017-08-30 | 2018-04-13 | 河南豫中地质勘察工程公司 | One kind is used for major diameter rapid drilling double-jacket tube with pipe supercharging device |
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- 2017-08-30 CN CN201710762254.0A patent/CN107780854B/en active Active
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| Publication number | Publication date |
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| CN107780854A (en) | 2018-03-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Floor 23, Henan Coalfield Science and Technology Center Building, No. 70, Shangding Road, Zhengzhou District (Zhengdong), Zhengzhou Free Trade Zone, 450,000, Henan Applicant after: Henan Yuzhong Geological Exploration Engineering Co.,Ltd. Address before: East of 1-6, 10th Floor, Henan Coalfield Science and Technology Center Building, No. 70 Shangding Road, Zhengdong New District, Zhengzhou City, Henan Province, 450000 Applicant before: HENAN YUZHONG GEOLOGICAL PROSPECTING ENGINEERING CO. |
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