CN102071876A - Multistage reducing combined drilling tool - Google Patents
Multistage reducing combined drilling tool Download PDFInfo
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- CN102071876A CN102071876A CN2011100062339A CN201110006233A CN102071876A CN 102071876 A CN102071876 A CN 102071876A CN 2011100062339 A CN2011100062339 A CN 2011100062339A CN 201110006233 A CN201110006233 A CN 201110006233A CN 102071876 A CN102071876 A CN 102071876A
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Abstract
The invention relates to a multistage reducing combined drilling tool, which is used for performing bedding drilling in soft extruded coal beds and highly-gassy coal beds of coal mines to solve the technical problems of shallow constructional depth and difficult construction of drilling holes due to hole spraying and drill clamping, ensuring the constructional depth and quality of the drilling holes and improving the effects of outburst prevention and gas exploitation. A first-stage drill 1, a second-stage drill 2, a third-stage 3 and a fourth-stage drill 4 are in threaded connection to form the multistage reducing combined drilling tool (which is shown as the figure). During drilling, the first-stage drill 1 drills a drill hole with a small diameter of 42 millimeters first; the next stage of drill cuts coal bodies in a plastic ring of the previous stage of drill hole to reduce the disturbance of coal cutting operation on the state of coal body stress and gas power and prevent hole spraying, and cuts the plastic deformation of the previous stage of drill hole to prevent the drill clamping and drill holding on drill rods due to the plastic deformation of the drill holes; and the construction of the drilling holes with the diameters of 75 millimeters, 89 millimeters and 108 millimeters is completed by performing reducing cutting for 3 and 4 times.
Description
Technical field
The present invention relates to the multi-stage reducing way-type drilling unit, be used in the soft projecting coal bed and suitable layer boring of high gas layer construction, prevent to cause the technical barrier of drilling construction depth as shallow and constructional difficulties, guarantee the drilling construction degree of depth and quality, improve protrusion-dispelling and mash gas extraction effect because of spray orifice, stick of tool.
Background technology
At present, China's coal-mine construction coal bed drilling mostly is conventional bit with drill bit, and general bit diameter is bore diameter, and diameter has specifications such as 42mm, 75mm, 89mm and 108mm.Under conventional bore diameter, do not find the similar patent of multi-stage reducing way-type drilling unit.The invention " automatic reducing borehole-enlarging drilling tool " that relevant patent has the utility model " but reducing coal-unloading drill " of CN96226431.8, utility model " automatic reducing borehole-enlarging drilling tool " that application number is CN03245809.6 and application number to be CN200710106673.5.
CN96226431.8 " reducing borehole-enlarging drilling tool " invention (design) people is Wang Kuijun, Cai Chenggong, Xin Xinping, Xu Zhaoze.This utility model drilling tool is made up of preceding drill body, back drill body, cutter hub, spring leaf, spacing ring etc., and when creeping into, alignment pin and fixed claw are fixed on cutter hub on the drill body; After boring is got at the bottom of the hole, strengthen rig thrust, alignment pin is cut off, and by spring cutter hub is flicked, cutter hub is realized ream operation under spring force and rotary centrifugal force effect.
CN 03245809.6 " automatic reducing borehole-enlarging drilling tool " invention (design) Ren Wei Xin Xinping, history are talented etc., it is the borehole-enlarging drilling tool of construction gas extraction hole under a kind of coal mine, form by preceding drill body, cutter hub, back drill body, spacing ring, coupling nut etc., preceding drill body is connected with coupling nut by spacing ring with the back drill body, on the drill body, back drill body was provided with sliding wedge before cutter hub was fixed on by pivot pin.When normally creeping into, sliding wedge is fixed on cutter hub on the drill body of back; During trip-out, sliding wedge withdraws from, and cutter hub opens, and realizes ream operation under the rotary centrifugal force effect.
Invention (design) people of CN200710106673.5 " automatic reducing borehole-enlarging drilling tool " is Cai Chenggong, Ma Piliang, and drilling tool is a kind of preceding drill body, back drill body, cut knife rest, supports the quadric chain that knife rest is formed.Be that minor diameter creeps into when normally creeping into, at the bottom of creeping into the hole after, implement the trip-out reaming, once finish the operation of large diameter borehole construction pore-creating.
Above-mentioned three kinds of drilling tools are the major diameter borehole-enlarging drilling tool, do not relate to anti-spray orifice, stick of tool problem.
Summary of the invention
The invention provides a kind of brand-new principle multi-stage reducing way-type drilling unit, arrive the level Four reducing, the drilling construction of realization 75mm, 89mm, 108mm diameter by three.At first, with the slim hole of one-level drill bit construction 42mm,, prevent that spray orifice from taking place to reduce the disturbance of coal cutting operation to stress in coal bed and mash gas dynamic state; Then, the exposed coal operation in the plastic circle of previous stage boring of back one-level drill bit is fallen the plastic strain of previous stage boring to cut; Through three to four cut plastic strain, after Completion of Drilling Hole, eliminate the plastic strain of holing, eliminate the boring distortion and drilling rod is produced behaviors such as stick of tool, armful brill; In addition, secondary drill bit, three grades of drill bits, level Four drill bits carry out the cut operation respectively in the boring plastic circle of prime drill bit construction, and the disturbance of stress in coal bed, mash gas dynamic state is reduced, and also prevent from the construction drill process spray orifice to take place.
The present invention solves construction and prevents that along layer boring the technical scheme of spray orifice, stick of tool from being: one-level drill bit 1, secondary drill bit 2, three grades of drill bits 3, level Four drill bits 4 are connected by the standard drill rod thread, be combined into a multi-stage reducing way-type drilling unit.The one-level bit diameter is 42mm, and the final stage bit diameter has three kinds of specifications of 75mm, 89mm or 108mm for the whole bore dia of design boring, and intergrade is by the whole bore dia appropriate design of boring; Bit diameters at different levels, the every level length of reducing sum of series can design on demand according to factors such as coal seam intensity, gas size, rate of penetrations.
The invention has the beneficial effects as follows and utilize slim hole perforate and coal cutting operation in the boring plastic circle, reduce of the disturbance of cut coal body, prevent spray orifice stress in coal bed and mash gas dynamic state; By the gradation pore-forming, the cut plastic strain of falling to hole, the plastic strain that prevents to hole to the stick of tool of drilling rod, embrace the brill behavior.Two technology combinations, solution causes the technical barrier of drilling construction difficulty and drilling construction depth as shallow soft projecting coal bed the construction with high gas layer along a layer generation spray orifice, stick of tool.The drilling tool construction technology is simple, and compliance is strong.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a multi-stage reducing way-type drilling unit working state schematic representation.One-level drill bit 1, secondary drill bit 2, three grades of drill bits 3, level Four drill bits 4 connect by the standard drill rod thread, are combined into a multi-stage reducing way-type drilling unit.
Fig. 2 is the cross sectional representation of multi-stage reducing way-type drilling unit.Pick is 120 degree three wings and distributes.
1. one-level drill bits among the figure, 2. secondary drill bit, 3. three grades of drill bits, 4. level Four drill bit, 5. hard metal tip.
The specific embodiment
Fig. 1 is for multi-stage reducing way-type drilling unit structure and normally creep into the job state schematic diagram.When creeping into, one-level drill bit 1 is at first beaten the 42mm small bore; Secondary drill bit 2 cut coal body in the plastic circle of one-level boring then, and the plastic strain of previous stage boring fallen to cut; Three grades of drill bits 3 are the cut coal body in the plastic circle of secondary boring, and the plastic strain of preceding secondary boring is fallen to cut; Through three to four times reducing cut coal body, finish drilling construction.
Claims (5)
- Patent of the present invention belongs to the safety of coal mines field, be used for the colliery in the soft projecting coal bed and suitable layer boring of high gas layer construction, prevent to cause the technical barrier of drilling construction depth as shallow and constructional difficulties, guarantee the drilling construction degree of depth and quality, improve protrusion-dispelling and mash gas extraction effect because of spray orifice, stick of tool.1. this multi-stage reducing way-type drilling unit is by one-level drill bit, secondary drill bit, three grades of drill bits, level Four drill bit, and by being threaded into a multi-stage reducing way-type drilling unit, pick is 120 degree three wings and distributes.When creeping into, one-level drill bit 1 is at first beaten the 42mm slim hole; Then, back one-level drill bit is the cut coal body in the plastic circle of previous stage boring, reduces the disturbance of coal cutting operation to stress in coal bed and mash gas dynamic state, prevents spray orifice, and cut falls the plastic strain of previous stage boring, the plastic strain that prevents to hole to the stick of tool of drilling rod, embrace the brill behavior; Through three to four reducing cuts, finish the construction of 75mm, 89mm and 108mm diameter boring.
- 2. according to the described multi-stage reducing way-type drilling unit of claim 1, it is characterized in that: adopt three to the level Four reducing, be implemented in soft projecting coal bed and high gas layer construction diameter 75mm, 89mm or 108mm boring, prevent spray orifice, stick of tool accident.
- 3. according to the described multi-stage reducing way-type drilling unit of claim 1, it is characterized in that: adopt one-level drill bit cut coal body method in the plastic circle of previous stage boring, reduce the disturbance of coal cutting operation, prevent spray orifice stress in coal bed and mash gas dynamic state.
- 4. according to the described multi-stage reducing way-type drilling unit of claim 1, it is characterized in that: adopt back one-level drill bit cut to fall the plastic deformation method of previous stage boring, stick of tool, armful brill behavior of plastic strain to drilling rod prevents to hole.
- 5. according to the described multi-stage reducing way-type drilling unit of claim 1, it is characterized in that: bit diameters at different levels, the every level length of reducing sum of series can adjust on demand according to factors such as coal seam intensity, gas size, rate of penetrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100062339A CN102071876A (en) | 2011-01-13 | 2011-01-13 | Multistage reducing combined drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100062339A CN102071876A (en) | 2011-01-13 | 2011-01-13 | Multistage reducing combined drilling tool |
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| CN102071876A true CN102071876A (en) | 2011-05-25 |
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| CN2011100062339A Pending CN102071876A (en) | 2011-01-13 | 2011-01-13 | Multistage reducing combined drilling tool |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383738A (en) * | 2011-06-27 | 2012-03-21 | 永贵能源开发有限责任公司 | Method and device for improving deep hole forming rate of bedding layer of coal mine |
| CN104196454A (en) * | 2014-09-03 | 2014-12-10 | 无锡中地地质装备有限公司 | Deflecting and counterboring drilling tool |
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
| CN105041219A (en) * | 2015-08-27 | 2015-11-11 | 淮北矿业（集团）勘探工程有限责任公司 | Large-caliber stepped combined drill |
| CN107433353A (en) * | 2017-09-14 | 2017-12-05 | 张家港钻通设备有限公司 | A kind of combined drill device with multistage drill bit |
| CN108278079A (en) * | 2018-01-10 | 2018-07-13 | 河南理工大学 | Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool |
| CN108316856A (en) * | 2018-01-10 | 2018-07-24 | 河南理工大学 | Strengthen cherry coal rock intensity drilling method and drilling tool step by step |
| CN109441366A (en) * | 2018-12-27 | 2019-03-08 | 河南理工大学 | It is a kind of can bidirectional rotation anchor cable drill-steel set |
| CN113047784A (en) * | 2021-04-01 | 2021-06-29 | 西南石油大学 | Intelligent diameter-variable stabilizer |
Citations (5)
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|---|---|---|---|---|
| CN2464924Y (en) * | 2000-12-13 | 2001-12-12 | 王效勤 | Multi-stage combined dimond composite piece drill |
| US20020108785A1 (en) * | 2001-02-13 | 2002-08-15 | Slaughter Robert Harlan | Back reaming tool |
| CN2611572Y (en) * | 2003-03-21 | 2004-04-14 | 袁啟法 | Combined rock drill |
| CN201062490Y (en) * | 2007-08-10 | 2008-05-21 | 石家庄中煤装备制造有限公司 | Anti-collapse highly effective combined drill |
| CN201152147Y (en) * | 2008-01-28 | 2008-11-19 | 三原石油钻头厂 | Multilevel tower type engineering drill head |
-
2011
- 2011-01-13 CN CN2011100062339A patent/CN102071876A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464924Y (en) * | 2000-12-13 | 2001-12-12 | 王效勤 | Multi-stage combined dimond composite piece drill |
| US20020108785A1 (en) * | 2001-02-13 | 2002-08-15 | Slaughter Robert Harlan | Back reaming tool |
| CN2611572Y (en) * | 2003-03-21 | 2004-04-14 | 袁啟法 | Combined rock drill |
| CN201062490Y (en) * | 2007-08-10 | 2008-05-21 | 石家庄中煤装备制造有限公司 | Anti-collapse highly effective combined drill |
| CN201152147Y (en) * | 2008-01-28 | 2008-11-19 | 三原石油钻头厂 | Multilevel tower type engineering drill head |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383738A (en) * | 2011-06-27 | 2012-03-21 | 永贵能源开发有限责任公司 | Method and device for improving deep hole forming rate of bedding layer of coal mine |
| CN104196454A (en) * | 2014-09-03 | 2014-12-10 | 无锡中地地质装备有限公司 | Deflecting and counterboring drilling tool |
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
| CN105041219A (en) * | 2015-08-27 | 2015-11-11 | 淮北矿业（集团）勘探工程有限责任公司 | Large-caliber stepped combined drill |
| CN107433353A (en) * | 2017-09-14 | 2017-12-05 | 张家港钻通设备有限公司 | A kind of combined drill device with multistage drill bit |
| CN108316856A (en) * | 2018-01-10 | 2018-07-24 | 河南理工大学 | Strengthen cherry coal rock intensity drilling method and drilling tool step by step |
| CN108278079A (en) * | 2018-01-10 | 2018-07-13 | 河南理工大学 | Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool |
| CN108278079B (en) * | 2018-01-10 | 2019-04-16 | 河南理工大学 | Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool |
| CN108316856B (en) * | 2018-01-10 | 2019-04-19 | 河南理工大学 | Strengthen cherry coal rock intensity drilling method and drilling tool step by step |
| CN109441366A (en) * | 2018-12-27 | 2019-03-08 | 河南理工大学 | It is a kind of can bidirectional rotation anchor cable drill-steel set |
| CN109441366B (en) * | 2018-12-27 | 2023-09-26 | 河南理工大学 | Anchor cable complete drilling tool capable of rotating bidirectionally |
| CN113047784A (en) * | 2021-04-01 | 2021-06-29 | 西南石油大学 | Intelligent diameter-variable stabilizer |
| CN113047784B (en) * | 2021-04-01 | 2022-04-26 | 西南石油大学 | Intelligent diameter-variable stabilizer |
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Addressee: Henan Polytechnic University Document name: the First Notification of an Office Action |
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Application publication date: 20110525 |