CN103195372B - A kind of screw type bit and a kind of foam drilling device and foam drilling technique - Google Patents
A kind of screw type bit and a kind of foam drilling device and foam drilling technique Download PDFInfo
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- CN103195372B CN103195372B CN201310144491.2A CN201310144491A CN103195372B CN 103195372 B CN103195372 B CN 103195372B CN 201310144491 A CN201310144491 A CN 201310144491A CN 103195372 B CN103195372 B CN 103195372B
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Abstract
The present invention relates to drilling project field, particularly relate to a kind of screw type bit and a kind of foam drilling device employing this drill bit and a kind of novel foam drilling method using this foam drilling device.Increase drill bit intensity to extend the service life of drill bit and to save the problem of cooling water in drilling process for solving sufficiently cool drill bit in drilling process simultaneously, the invention provides a kind of screw type bit, during this spiral, drill bit has multiple spiral mouth of a river, the described spiral mouth of a river is made up of spiral water flow grooves and water filling port, described spiral water flow grooves is divided into partial cut-away shape at Bit face, described water filling port is bottom spraying type water filling port, described spiral water flow grooves preferably accounts for Bit face thickness 1/2 ~ 2/3 along drill bit radial direction at the thickness of Bit face part.Screw type bit drill bit labial surface when creeping into that the present invention provides can be adequately cooled, and the intensity of labial surface have also been obtained enhancing simultaneously, extends the service life of drill bit, has saved the cost of drilling project.
Description
Technical field
The present invention relates to drilling project field, particularly relate to a kind of screw type bit and a kind of foam drilling device employing this drill bit and a kind of novel foam drilling method using this foam drilling device.
Background technology
It is known that the temperature that drill bit can reach in drilling process is the highest, causing drill bit, especially Bit face part is usually because of the too high and too fast scaling loss of temperature.At present solve drill bit lower the temperature in drilling process the problem of loss prevention time, multiple sides formula or the bottom spraying type mouth of a river are generally set on drill bit, by drill bit provides cooling liquid to reduce the temperature of drill bit in drilling project, comparatively speaking, using the bottom spraying type mouth of a river that cooling liquid can be made to flow through drill bit more fully, cooling effect is preferable.In the selection of mouth of a river quantity, for reaching more preferable cooling effect, mouth of a river quantity is The more the better, but from the standpoint of collateral security drill bit intensity, the mouth of a river quantity being generally selected at present is 8 ~ 14.In the selection of mouth of a river shape, mouth of a river shape being designed with peg gate or spiral water flow grooves at present, but when using peg gate, cooling liquid can not sufficiently flow through drill bit, therefore cooling effect is poor, and drill bit scaling loss is very fast；And when using spiral water flow grooves, coolant greater area of can flow through drill bit, cooling effect is preferable.For the drill bit of spiral water flow grooves, current common type is that the mouth of a river is shaped as tunneling boring shape at drill bit labial surface, but when using this form, the current of cooling liquid still can not flow through the labial surface part of drill bit, is still difficult to reach optimal cooling effect；And the intensity of drill bit is less when using this form, therefore in drilling process, the labial surface part of drill bit especially drill bit appoints right scaling loss very fast.
Foam comprehensive exponent, starts application the eighties in China, is mainly used in during the deep-well such as oil drilling, deep well creeps into, also has application in engineering geological investigation, solves the cooling of drill bit in drilling process and lubrication to reduce burn out rate.The most general foam drilling device, being to add air compressor machine, dosing pump, pressurizer etc. on the basis of normal developing liquid drilling apparatus and utensil, concrete structure is disclosed herein entitled " air foam bores technology and applied research thereof " (Chinese science and technology paper is online).The water-saving result religion conventional flush liquid drilling apparatus of this device is obvious.But, if the hole depth of an exploratory hole is 30m, average drilling speed is 1.5m/h, then drilling time is 20 hours, during according to conventional foam drilling, namely when using regular-type foam cleanout fluid and normal drill bit, owing to regular-type foam cleanout fluid foaming effect is poor, therefore drilling process needs water consumption to be 20 × 60 × 15=18000L=18T, then during conventional foam probing, water consumption at least needs to want 15 more than L/min, and water consumption is the biggest；If but discharge reduction, drill bit will be caused to burn.Further, owing to regular-type foam cleanout fluid foaming effect is poor, therefore it is the most poor to the lubrication of drill bit, and drill bit scaling loss speed is the most very fast.In the case of meeting nominal situation (water yield is sufficient), the one-tenth porosity of the method at most can reach 90%.
In prior art, someone discloses foam solution CN200710118082.X and the method for drilling well thereof, also has the foaming agent (CN85105173) for air foam well-drilling.
But, due to developing rapidly of wind-power electricity generation in recent years, the engineering geological investigation water shortage problem of alpine region wind-power electricity generation highlights.Because wind park blower fan seat in the plane is frequently located in the mountain top that air quantity is good, geological prospecting work often is difficult to find because of water source, and water transport difficult is used in exploration, causes construction cost drastically to increase.Therefore, under conditions of water resource lacks, the drill bit in drilling process cooled down and lubricated into urgent problem.
Summary of the invention
The technical problem to be solved is: increase the intensity of drill bit in drilling process while sufficiently cool drill bit to extend the service life of drill bit and to save the problem of cooling water in drilling process.
For solving above-mentioned technical problem, the invention provides a kind of screw type bit.
A kind of screw type bit that the present invention provides, has multiple spiral mouth of a river, and the described spiral mouth of a river is made up of spiral water flow grooves and water filling port, and described spiral water flow grooves is divided into partial cut-away shape at Bit face.
Use such scheme, in drilling process, cooling liquid can flow to be arranged on the spiral water flow grooves of drill bit by water filling port, cooling liquid is made sufficiently to flow through Bit face part, ensure to enhance again while drill bit is substantially effectively cooled down the intensity of drill bit, extend the service life of drill bit；Simultaneously because cooling liquid can bigger flow through drill bit, the most also relatively reduce the cooling water amount in drilling process, saved cooling water.
Further, described water filling port is to be opened on the bottom surface of spiral water flow grooves.
Improved further by this, drill bit cooling effect can be improved further, make drill bit be adequately cooled in time.
Further, described spiral water flow grooves at the water flow grooves labial surface thickness of Bit face part for account for Bit face thickness 1/2 ~ 2/3 along drill bit radial direction.
In this further improvement project, described spiral water flow grooves being selected when accounting for the 1/2 ~ 2/3 of Bit face thickness along drill bit radial direction at the thickness of Bit face part can the intensity of significantly more efficient guarantee drill bit labial surface, make drill bit labial surface be not easy when creeping into collapse damage, extend the service life of drill bit.
Further, described spiral mouth of a river quantity is 12.
Improved further by this, improve drill bit cooling effect further, make drill bit be adequately cooled in time；Also assures that the intensity of drill bit simultaneously, extend the service life of drill bit.
And then, the invention provides a kind of foam drilling device, including foam cell, return pipe, rig and sump pit, it is characterized in that, described foam cell connects a multifunction plunger pump by return pipe, described multifunction plunger pump is connected by fluid flowmeter and a foam mixer, described foam mixer is connected by gas flowmeter and check valve and an air compressor, described foam mixer connects rig by Pressure gauge and check valve, described rig have employed screw type bit of the present invention, described screw type bit is connected with described rig by drilling rod, described rig connects described sump pit, described sump pit connects described foam cell.
On the basis of above, present invention also offers a kind of novel foam drilling method, comprise the following steps:
A. assemble the invention described above provided foam drilling device；
B. a kind of novel foam flushing liquor of configuration, described novel foam flushing liquor obtains for adding foaming agent in regular-type foam flushing liquor；
C. the foam drilling device described in applying step A and the novel foam flushing liquor described in step B creep into.
Further, the foaming agent in described step A is normal domestic detergent.
Further, the content of described normal domestic detergent is 0.3% ~ 0.5%.
Further, described multifunction plunger pump discharge 3L/min, pressure 5kg/cm2。
Further, the air quantity of described air compressor is 1.8m3/ min, pressure are 5kg/cm2。
The foam drilling device and the novel drilling process that use present invention offer are had the beneficial effect that and are increased multifunction plunger pump and air compressor in common drilling apparatus, plunger displacement pump and air compressor is started when creeping into, the foam solution of 3L/min-5L/min is mixed to form with air in foam device air foam cleansing medium, foaming effect can be improved, increase the lubricity of Foam flushing liquid, improve the lubricant effect to drill bit in drilling process；Simultaneously as the improvement to drill bit so that scouring media in drilling bit high-speed drilling process can bigger ground along Bit surface current mistake, substantially improve the cooling effect to drill bit, reduce the burn out rate of drill bit, extend the service life of drill bit.And, after using present invention process method, water consumption in drilling process is 20 × 60 × (3～5)=3600L～6000L=3.6T～6T, at least using water wisely 12T/(30m) hole, water-saving result is fairly obvious, this makes to further ensure the lubrication to drill bit and cooling under the operating mode that water resource lacks, and reduces the burn out rate of drill bit, extends the service life of drill bit.On this basis, owing to the foaming of described novel foam flushing liquor is the most abundant, therefore under the running up of drill bit, it is more prone to atomization, and this atomized foam flushing liquor is mixed with rock dust, broken formation can be played preferable viscous and filling effect by it, reduces rock dust serosity and washes away hole wall, wall stability increases, drilling accident rate is greatly reduced, substantially increases into porosity, become porosity up to more than 99%.
Accompanying drawing explanation
Fig. 1 is the labial surface part of screw type bit front schematic view under the state of creeping into.
Fig. 2 is screw type bit left view under the state of creeping into.
Fig. 3 by present invention process method used the overall system diagram of foam drilling device.
Wherein: 1-foam cell；2-return pipe；3-multifunction plunger pump；4-fluid flowmeter；5-foam mixer；6-gas flowmeter；7,10-check valve；8-air compressor；9-Pressure gauge；11-rig；12-drilling rod；14-sump pit；Screw type bit is sprayed at the bottom of 13-；The spiral water flow grooves of 15-；16-water filling port；Drill bit inner chamber when 17-creeps into；When 18-creeps into, cooling liquid flows to；19-drilling rod wall；20-water flow grooves labial surface thickness.
Detailed description of the invention
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is elaborated.
According to Fig. 1, Fig. 2, a kind of screw type bit, there is multiple spiral mouth of a river, the described spiral mouth of a river is made up of spiral water flow grooves 15 and water filling port 16, and described spiral water flow grooves 15 is divided into partial cut-away shape at Bit face.Described water filling port 16 is to be opened on the bottom surface of spiral water flow grooves 15.Described spiral water flow grooves 15 preferably accounts for Bit face thickness 1/2 ~ 2/3 along drill bit radial direction at the water flow grooves labial surface thickness 20 of Bit face part.Described spiral mouth of a river quantity is preferably 12.
As shown in Figure 3, including foam cell 1, return pipe 2, rig 11 and sump pit 14, described foam cell 1 connects a multifunction plunger pump 3 by return pipe 2, described multifunction plunger pump 3 is connected with a foam mixer 5 by fluid flowmeter 4, described foam mixer 5 is connected with an air compressor 8 by gas flowmeter 6 and check valve 7, described foam mixer 5 connects rig 11 by Pressure gauge 9 and check valve 10, described rig 11 have employed the screw type bit 13 described in claim 1 ~ 4, described screw type bit 13 is connected with described rig 11 by drilling rod 12, described rig 11 connects described sump pit 14, described sump pit 14 connects described foam cell 1.
When utilizing above-mentioned drilling apparatus to creep into, use following process: assemble the foam drilling device that the present invention provides, and configure a kind of novel foam flushing liquor, this novel foam flushing liquor obtains for adding foaming agent in regular-type foam flushing liquor, and this foaming agent content is the civilian detergent of common high bubble of 0.3% ~ 0.5%；Start multifunction plunger pump, set flow 3L/min, pressure 5kg/cm2, and start air compressor, set air quantity as 1.8m3/ min, pressure are 5kg/cm2, by the above-mentioned Foam flushing liquid of 3L/min-5L/min, foam device is mixed to form with air air foam cleansing medium；Start described foam drilling device to creep into.
Claims (6)
1. a screw type bit, has multiple spiral mouth of a river, it is characterised in that the described spiral mouth of a river is made up of spiral water flow grooves (15) and water filling port (16), and described water filling port (16) is for be opened on the bottom surface of spiral water flow grooves (15)；Described spiral water flow grooves (15) is divided into partial cut-away shape at Bit face, spiral water flow grooves (15) in water flow grooves labial surface thickness (20) of Bit face part for account for Bit face thickness 1/2 ~ 2/3 along drill bit radial direction.
Screw type bit the most according to claim 1, it is characterised in that described spiral mouth of a river quantity is 12.
null3. a foam drilling device，Including foam cell (1)、Return pipe (2)、Rig (11) and sump pit (14)，Described foam cell (1) connects a multifunction plunger pump (3) by return pipe (2)，Described multifunction plunger pump (3) is connected with a foam mixer (5) by fluid flowmeter (4)，Described foam mixer (5) is connected with an air compressor (8) by gas flowmeter (6) and check valve (7)，Described foam mixer (5) connects rig (11) by Pressure gauge (9) and check valve (10)，Described rig (11) connects described sump pit (14)，Described sump pit (14) connects described foam cell (1)，It is characterized in that，Described rig (11) have employed the screw type bit (13) described in claim 1 ~ 2，Described screw type bit (13) is connected with described rig (11) by drilling rod (12).
4. a foam drilling process, it is characterised in that comprise the following steps:
A. the foam drilling device in claim 3 is assembled；
B. a kind of novel foam flushing liquor of configuration, described novel foam flushing liquor obtains for adding foaming agent in regular-type foam flushing liquor；
C. the foam drilling device described in applying step A and the novel foam flushing liquor described in step B creep into；
Foaming agent in described step B is normal domestic detergent, and the content of detergent is 0.3% ~ 0.5%.
Foam drilling process the most according to claim 4, it is characterised in that described multifunction plunger pump (3) flow 3L/min, pressure 5kg/cm2。
Foam drilling process the most according to claim 4, it is characterised in that the air quantity of described air compressor (8) is 1.8m3/ min, pressure are 5kg/cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144491.2A CN103195372B (en) | 2013-04-24 | 2013-04-24 | A kind of screw type bit and a kind of foam drilling device and foam drilling technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144491.2A CN103195372B (en) | 2013-04-24 | 2013-04-24 | A kind of screw type bit and a kind of foam drilling device and foam drilling technique |
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| Publication Number | Publication Date |
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| CN103195372A CN103195372A (en) | 2013-07-10 |
| CN103195372B true CN103195372B (en) | 2016-08-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131796A (en) * | 2014-08-12 | 2014-11-05 | 吉林大学 | Well bottom foaming foam drilling method |
| CN104179456B (en) * | 2014-08-18 | 2017-01-11 | 中国地质大学（武汉） | Drill bit with spiral lip surfaces |
| CN105971517B (en) * | 2016-06-23 | 2017-11-10 | 中煤科工集团西安研究院有限公司 | The laddering gas pre-drainage directional hole drilling system in broken soft seam underground and method |
| CN106285713B (en) * | 2016-08-31 | 2019-02-19 | 中国铁建重工集团有限公司 | Cutter head for rock tunnel development machine |
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| US4915182A (en) * | 1988-07-01 | 1990-04-10 | Hilti Aktiengesellschaft | Cutter elements for hollow drill bit |
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| CN103195372A (en) | 2013-07-10 |
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Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant before: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant after: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Applicant before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group |
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Effective date of registration: 20180514 Address after: No. 16, camphor East Road, Yuhua District, Changsha, Hunan Co-patentee after: HUNAN ZHONGNAN WATER POWER HYDRAULIC ENGINEERING CONSTRUCTION CO.,LTD. Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: No. 16, camphor East Road, Yuhua District, Changsha, Hunan Patentee before: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. |