CN101876236A - Locally expanded multi-wing expanding bit - Google Patents
Locally expanded multi-wing expanding bit Download PDFInfo
- Publication number
- CN101876236A CN101876236A CN 201010164278 CN201010164278A CN101876236A CN 101876236 A CN101876236 A CN 101876236A CN 201010164278 CN201010164278 CN 201010164278 CN 201010164278 A CN201010164278 A CN 201010164278A CN 101876236 A CN101876236 A CN 101876236A
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- China
- Prior art keywords
- reaming
- wing
- bit
- drill bit
- air flue
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Abstract
The invention relates to a locally expanded multi-wing expanding bit comprising an expanding multi-wing bit and a drill stem (16) which are connected through an upper connector (17). The locally expanded multi-wing expanding bit is characterized in that a bit (7) and the expanding multi-wing bit are connected through a lower connector (18). The invention has the advantages of simple structure, safe and reliable performance and convenient use and simultaneously solves the problem of difficult construction on soft and hard rock stratums with larger expanding radii.
Description
(1) technical field
The present invention relates to coal geological drilling, coal bed gas, mine gas drainage well brill, hole enlargement aperture apparatus, be specially locally expanded multi-wing expanding bit.
(2) background technology
In recent years, for the comprehensive utilization that improves coal resources and eliminate in the progress of coal mining and the accident that gas jeopardizes safety in production occurs, before coal mining, to be provided with the coal bed gas (gas) on construction ground and take out well in advance, perhaps the drawing-off gas well is set, extracts, collect coal bed gas in mine main.In construction; coal bed gas is taken out the coal seam well section of well or the certain well section of drawing-off gas well in advance; often need to carry out the part and make cave or hole enlargement;, can not be extruded and fracture, damage and scrap being lowered into the sleeve pipe in the well with the output that improves coal bed gas or protection because of depression, the dislocation that cause of being mined in the stratum.
Currently used reaming hole digging device, the patent No. that sees also the applicant is the 200620032323.x patent.This device comprises joint and reaming hole digging knife, hinge axis.Hinged between reaming hole digging knife and the joint, referring to accompanying drawing 1.The reaming hole digging device is connected with drilling rod during work, carry fluid (liquid, gas or gas liquid mixture) by ground by drilling tool, this fluid is by the air flue 1 of air flue 4---hollow hinge 3---the reaming hole digging knife body 2 of joint inside, the spouting generation thrust of nozzle from the reaming hole digging knife body 2 at last, reaming hole digging knife body 2 is deflected around hinge 3 lift, it is big that diameter becomes.Joint 5 rotates under the drive of drilling tool and makes scraping tooth scraping broken formation, reaches the purpose that the cave is drawn in reaming.Reaming finishes, and stops to supply with fluid, and reaming hole digging knife body 2 sagging resetting are finished reaming and drawn the cave operation.
The problem that this reamer exists: 1, reaming hole digging knife head is a single armed, the low poor stability of efficient during reaming, and the cave is drawn in the reaming that only suits in the coal seam; 2, because the intersect vertical axis of the axle center of the hinge axis of its design and joint is hinged, if change the both arms reaming cutter into, certainly will cause in joint diameter the same terms UR cutter head thickness attenuation intensity and reduce frangibility, have an accident, the reaming that equally sincerely suits in softer coal seam is drawn the cave and can not reaming be drawn the cave in harder rock stratum; 3, because the joint body lower end is short, do not set upright guide function, can not guarantee the desired aperture size quality requirement of reaming, the cave is drawn in the reaming that sincerely suits too in softer coal seam, can not satisfy in the rock stratum reaming and creep into.In sum, this hole digging device is difficult to realize that major diameter draws cave and reaming in small-bore rock stratum, do not reach the engineering construction requirement.
(3) summary of the invention
The present invention's purpose is to overcome reamer arm frangibility of the prior art, aperture quality and can not guarantees etc. defective to provide a kind of novel locally expanded multi-wing expanding bit.
In order to realize above-mentioned purpose, the present invention is according to following technical scheme.This locally expanded double-vane reaming bit is connected by last connector with drilling rod by reaming wing drill bit, it is characterized in that drill bit is connected by lower connector with reaming wing drill bit.
Described reaming wing drill bit is connected successively by drill bit guide sub, reaming wing body and drilling rod guide sub three parts, reaming wing and hollow hinge are hinged, the hollow hinge is fixed on the reaming wing body, have air flue in reaming wing body and the drilling rod guide sub, the perforation mode of air flue is drilling rod air flue, hollow hinge air flue and reaming wing air flue, and the three communicates successively.
Described hollow hinge is fixedly on the reaming wing body and depart from guide way axle center symmetric arrangement.
Superior part of the present invention is: simple in structure, performance is safe and reliable, easy to use, has solved simultaneously at construction difficult problem soft, the big reaming radius of ground consisting of hard rock.
(4) description of drawings
Fig. 1 is the structural representation of injecting type hole hole digging device.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is the structural representation of reaming wing body of the present invention.
(5) specific embodiment
Concrete structure of the present invention sees also accompanying drawing 2.This device is connected by lower connector 17 with drilling rod 16 by reaming wing drill bit, it is characterized in that drill bit 7 is connected by last connector 18 with reaming wing drill bit.
The concrete structure of described reaming wing drill bit sees also accompanying drawing 3.It is connected successively by drill bit guide sub 8, reaming wing body and drilling rod guide sub 19 3 parts, reaming wing 9,11 is hinged with hollow hinge 10,13 respectively, hollow hinge 10,13 is fixed on the reaming wing body, have air flue in reaming wing body and the drilling rod guide sub 19, the perforation mode of air flue is drilling rod air flue 15, hollow hinge and reaming wing air flue 12,14, and the three communicates successively.
Going up connector 17 when the present invention works is connected with drilling rod 16, carry fluid (liquid, gas or gas liquid mixture) by ground by drilling tool, the air flue 15 of this fluid by drilling rod guide sub 19 inside be hollow hinge 10,13 one by one---the air flue 12,14 in the high strength reaming wing 9,11, the spouting generation thrust of nozzle from the reaming wing 9,11 at last, make high strength reaming wing 9,11, can deflect around hinge 10,13 respectively and lift, it is big that diameter becomes.
If the hollow hinge adopts the three wings formula, be that then 120 degree are uniform.
Compare with injecting type reaming hole digging device, locally expanded double-vane reaming bit cloth cutter is reasonable, has increased guide function and has crept into the function that reaming is constructed simultaneously, can reaming in the rock stratum, draw the cave, more can in the coal seam, reaming draw the cave, and stability and safety more.
The present invention both can reaming in existing boring, also can realize boring and reaming after the bottom connects drill bit, draw the cave and carry out synchronously, improved efficiency of construction.
Claims (3)
1. locally expanded multi-wing expanding bit is connected by last connector (17) with drilling rod (16) by reaming wing drill bit, it is characterized in that drill bit (7) is connected by lower connector (18) with reaming wing drill bit.
2. locally expanded multi-wing expanding bit as claimed in claim 1 is characterized in that described reaming wing drill bit is connected successively by drill bit guide sub (8), reaming wing body and drilling rod guide sub (19) three parts; Reaming wing (9), (11) are hinged with hollow hinge (10), (13) respectively, and hollow hinge (10), (13) are fixed on the reaming wing body; Have air flue in reaming wing body and drilling rod guide sub (19), drilling rod air flue (15), hollow hinge air flue and reaming wing air flue (12), (14) communicate successively.
3. locally expanded multi-wing expanding bit as claimed in claim 2 is characterized in that described hollow hinge (10), (13) are fixedly on the reaming wing body and depart from guide way axle center symmetric arrangement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010164278 CN101876236A (en) | 2010-05-06 | 2010-05-06 | Locally expanded multi-wing expanding bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010164278 CN101876236A (en) | 2010-05-06 | 2010-05-06 | Locally expanded multi-wing expanding bit |
Publications (1)
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CN101876236A true CN101876236A (en) | 2010-11-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 201010164278 Pending CN101876236A (en) | 2010-05-06 | 2010-05-06 | Locally expanded multi-wing expanding bit |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102828695A (en) * | 2012-08-03 | 2012-12-19 | 杨国发 | Reverse-circulation slag-removal reamer bit |
CN104405290A (en) * | 2014-11-28 | 2015-03-11 | 淮南宏昌科技有限责任公司 | Reamer bit for drilling through coal seam to pre-extract gas |
CN109236190A (en) * | 2018-10-31 | 2019-01-18 | 山西晋城无烟煤矿业集团有限责任公司 | Double-vane waterpower, which expands, rushes integration drills technique |
CN111456636A (en) * | 2020-04-17 | 2020-07-28 | 赵金明 | Oil field drilling and production drill bit mounting rack |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB497877A (en) * | 1936-11-30 | 1938-12-30 | Macclatchie Mfg Company Of Cal | Expansible cutter tool |
US4565252A (en) * | 1984-03-08 | 1986-01-21 | Lor, Inc. | Borehole operating tool with fluid circulation through arms |
WO2001075261A1 (en) * | 2000-03-31 | 2001-10-11 | Gebr. Van Leeuwen Harmelen B.V. | Back reamer |
CN2653113Y (en) * | 2003-06-25 | 2004-11-03 | 胜利石油管理局钻井工艺研究院 | Hydraulic expansion type PDC hole expander |
CN200943446Y (en) * | 2006-08-28 | 2007-09-05 | 彭桂湘 | Jet type hole-enlarging dredging device |
CN201747278U (en) * | 2010-05-06 | 2011-02-16 | 彭桂湘 | Local radius-expanding multi-wing expanding drill bit |
-
2010
- 2010-05-06 CN CN 201010164278 patent/CN101876236A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB497877A (en) * | 1936-11-30 | 1938-12-30 | Macclatchie Mfg Company Of Cal | Expansible cutter tool |
US4565252A (en) * | 1984-03-08 | 1986-01-21 | Lor, Inc. | Borehole operating tool with fluid circulation through arms |
WO2001075261A1 (en) * | 2000-03-31 | 2001-10-11 | Gebr. Van Leeuwen Harmelen B.V. | Back reamer |
CN2653113Y (en) * | 2003-06-25 | 2004-11-03 | 胜利石油管理局钻井工艺研究院 | Hydraulic expansion type PDC hole expander |
CN200943446Y (en) * | 2006-08-28 | 2007-09-05 | 彭桂湘 | Jet type hole-enlarging dredging device |
CN201747278U (en) * | 2010-05-06 | 2011-02-16 | 彭桂湘 | Local radius-expanding multi-wing expanding drill bit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102828695A (en) * | 2012-08-03 | 2012-12-19 | 杨国发 | Reverse-circulation slag-removal reamer bit |
CN102828695B (en) * | 2012-08-03 | 2014-12-10 | 杨国发 | Reverse-circulation slag-removal reamer bit |
CN104405290A (en) * | 2014-11-28 | 2015-03-11 | 淮南宏昌科技有限责任公司 | Reamer bit for drilling through coal seam to pre-extract gas |
CN109236190A (en) * | 2018-10-31 | 2019-01-18 | 山西晋城无烟煤矿业集团有限责任公司 | Double-vane waterpower, which expands, rushes integration drills technique |
CN111456636A (en) * | 2020-04-17 | 2020-07-28 | 赵金明 | Oil field drilling and production drill bit mounting rack |
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PB01 | Publication | ||
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Application publication date: 20101103 |