CN104265177A - Clamping prevention drilling tool - Google Patents
Clamping prevention drilling tool Download PDFInfo
- Publication number
- CN104265177A CN104265177A CN201410418745.XA CN201410418745A CN104265177A CN 104265177 A CN104265177 A CN 104265177A CN 201410418745 A CN201410418745 A CN 201410418745A CN 104265177 A CN104265177 A CN 104265177A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drilling tool
- gap length
- circle
- gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 230000002265 prevention Effects 0.000 title abstract 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- ZGDWHDKHJKZZIQ-UHFFFAOYSA-N cobalt nickel Chemical compound [Co].[Ni].[Ni].[Ni] ZGDWHDKHJKZZIQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005070 sampling Methods 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 description 8
- 238000007710 freezing Methods 0.000 description 8
- 239000011435 rock Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 206010060904 Freezing phenomenon Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- E21B10/00—Drill bits
- E21B10/02—Core bits
Landscapes
- 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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to a clamping prevention drilling tool, which comprises a drill bit and a drill rod, wherein the drill bit (1) is formed by a semicircle (9) and a semiellipse (10); the outer surface of the semicircle (9) is in a semicircular shape; the outer surface of the semiellipse (10) is in a semi-elliptic shape; the semicircular shape and the semi-elliptic shape jointly form the outer surface of the drill bit (1); the inner surface of the drill bit (1) is in a circular shape; a chip removal notch (11) is formed in the outer surface of the drill bit (1); and the circle center of the circular shape of the inner surface of the drill bit (1) is concentric with the circle center of the semicircle (9) and is also concentric with the semiellipse (10). The clamping prevention drilling tool has the advantages that the occurrence of bit bouncing or drill clamping phenomena during sampling is effectively prevented; internal and external eccentricity combination is utilized; according to long-time practice summary, the relationship among the lengths is allocated in a wide range, so an improved drilling tool is provided; and practice proves that the clamping prevention effect is better.
Description
Technical field
The present invention relates to a kind of drill bit, particularly relate to a kind of anti-sticking drilling tool.
Background technology
Bit freezing phenomenon usually occurs, and bit freezing is caused by Different factor usually, and such as, when (1) constructs with Churn drill, occur plum blossom hole, drill hammer is blocked by narrow positions; (2) collapse hole, falling rocks or instrument falls in hole, blocks drill bit; (3) long casing tilts, and lower end is drill bit impact distortion, with drill chuck together; (4) not timely soldering drill bit, bore diameter reduces gradually, and soldering is transfinited, and fiercelys attack again with high-stroke, and bit freezing occurs; (5) stretch into probe stone little in hole not broken, block and impact the vertex of a cone or cone pin; (6) bore too violent under, large rope unclasps too many, and drill bit collision is toppled in hole, withstands hole wall.And cause all indifferent with the anti-card of bit freezing itself in the middle of the factor of bit freezing or drill bit design imperfection to cause, this is most the underlying cause.Especially petroleum drilling and mining field, oil exploration needs to obtain stratum core sample, and mechanical type rotating side-wall core extractor is exactly a kind of instrument laterally drilling through rock core sample on the borehole wall, and the rotary drilling-head that it is equipped with is a very important instrument.Rotary drilling-head is hollow-core construction, and its inside and outside circle and drilled object, as stratum or rock core etc. close contact, produce larger friction.Once drilling cuttings is many or the micro-movement of instrument, all the accident such as bit bouncing, bit freezing is caused to occur sticky for appearance card phenomenon.
Summary of the invention
In order to overcome the shortcoming existed in above-mentioned prior art, the present invention is exactly for this problem, solve on the basis of bit freezing in existing employing deflection mode, inside and outside bias is utilized to combine, according to long practice summary, the relation between allotment length in very large range, thus a kind of improvement anti-sticking drilling tool is proposed, facts have proved that anti-sticking effect is better, beyond the scope that those skilled in the art expect.
In order to solve the problems of the technologies described above, the technical scheme adopted is: a kind of anti-sticking drilling tool, comprise drill bit and drilling rod, described drill bit is made up of a semicircle and a semiellipse, the external surface of described semicircle is semicircle, described semielliptical external surface is half elliptic, described semicircle and described half elliptic together constitute the external surface of described drill bit, the inner surface of described drill bit is rounded, the external surface of described drill bit has chip removal notch, the center of circle and the described semicircle of the described circle of the inner surface of described drill bit) the center of circle concentric, and it is also concentric with semiellipse, be concentric point, some inside projections are evenly placed with at the inner surface of described drill bit, described projection is that cobalt-nickel alloy is made, there is drill bit internal clearance A between drill bit and interior core, drill bit external series gap B is formed between drill bit and outer core, the gap length of described external series gap B is greater than the gap length of described internal clearance A, certain distance is offset between the drilling rod junction of described drilling rod and described concentric point, for eccentric throw C, and meet following relation: the 2-3 that the gap length of described external series gap B equals eccentric throw C doubly with the gap length sum of described internal clearance A, described semielliptical semi-major axis equals the 1.5-1.8 of described half radius of a circle doubly.
Preferably, the gap length of described external series gap B equal 3 times of eccentric throw C with the gap length sum of described internal clearance A, described semielliptical semi-major axis equals the 1.5-1.6 of described half radius of a circle doubly, preferably 1.5 times.
Preferably, the gap length of described external series gap B equal 2 times of eccentric throw C with the gap length sum of described internal clearance A, described semielliptical semi-major axis equals the 1.6-1.8 of described half radius of a circle doubly, preferably 1.7 times.
Preferably, the gap length of described external series gap B equal 2 times of eccentric throw C with the gap length sum of described internal clearance A, described semielliptical semi-major axis equals 1.6 times of described half radius of a circle.
Preferably, use described drilling tool 30 stuck number of times to be no more than 3 times, preferably 2 times, more select 1 time, most preferably 0 time.
Technique effect
The advantage that the present invention has and good effect are:
Compared with prior art, the center of circle that The embodiment provides inner circle and cylindrical on a kind of cross section all declines the drill bit on axis of rotation, the generation of bit bouncing or bit freezing phenomenon when effectively prevent sampling.Comprising the drilling tool of this drill bit when sampling, whole drilling tool can be taken out easily.Drilling tool prepared by the present invention overcomes the deficiency that current stratum coring bit easily causes the accident such as bit bouncing, bit freezing to occur.The present invention solves on the basis of bit freezing in existing employing deflection mode, inside and outside bias is utilized to combine, according to long practice summary, the relation between allotment length in very large range, thus a kind of improvement anti-sticking drilling tool is proposed, facts have proved that anti-sticking effect is better.Specifically see table 1.
Accompanying drawing explanation
Fig. 1 is drilling tool schematic cross-section of the present invention.
1 drill bit, 2 drilling rod junctions, 3 concentric points, 4 outer cores, core in 5,6 semiellipse semi-major axis, 7 semicircle radius, 8 (between drill bit 1 and interior core 5) drill bit internal clearance, 9 semicircles, 10 semiellipses, 11 chip removal notches, 12 (between drill bit 1 and outer core 4) drill bit external series gap, 13 projections.
Detailed description of the invention
Embodiment 1
A kind of anti-sticking drilling tool, comprise drill bit and drilling rod, it is characterized in that: described drill bit (1) is made up of a semicircle (9) and a semiellipse (10), the external surface of described semicircle (9) is semicircle, the external surface of described semiellipse (10) is half elliptic, described semicircle and described half elliptic together constitute the external surface of described drill bit (1), the inner surface of described drill bit (1) is rounded, the external surface of described drill bit (1) has chip removal notch (11), the center of circle of the described circle of the inner surface of described drill bit (1) is concentric with the center of circle of described semicircle (9), and it is also concentric with semiellipse (10), be concentric point (3), some inside projections (13) are evenly placed with at the inner surface of described drill bit (1), described projection (13) is made for cobalt-nickel alloy, there is drill bit internal clearance A (8) between drill bit (1) and interior core (5), drill bit external series gap B (12) is formed between drill bit (1) and outer core (4), the gap length of described external series gap B is greater than the gap length of described internal clearance A, certain distance is offset between the drilling rod junction (2) of described drilling rod and described concentric point (3), for eccentric throw C (not shown), and meet following relation: the gap length of described external series gap B equal 3 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals 1.8 times of described half radius of a circle (7).
Embodiment 2
A kind of anti-sticking drilling tool, comprise drill bit and drilling rod, it is characterized in that: described drill bit (1) is made up of a semicircle (9) and a semiellipse (10), the external surface of described semicircle (9) is semicircle, the external surface of described semiellipse (10) is half elliptic, described semicircle and described half elliptic together constitute the external surface of described drill bit (1), the inner surface of described drill bit (1) is rounded, the external surface of described drill bit (1) has chip removal notch (11), the center of circle of the described circle of the inner surface of described drill bit (1) is concentric with the center of circle of described semicircle (9), and it is also concentric with semiellipse (10), be concentric point (3), some inside projections (13) are evenly placed with at the inner surface of described drill bit (1), described projection (13) is made for cobalt-nickel alloy, there is drill bit internal clearance A (8) between drill bit (1) and interior core (5), drill bit external series gap B (12) is formed between drill bit (1) and outer core (4), the gap length of described external series gap B is greater than the gap length of described internal clearance A, certain distance is offset between the drilling rod junction (2) of described drilling rod and described concentric point (3), for eccentric throw C, and meet following relation: the gap length of described external series gap B equal 2 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals 1.6 times of described half radius of a circle (7).By embodiment 1 and 2, the mechanical property of its drilling efficiency and drill bit is tested, and the concrete outcome of the stuck number of times of important indicator is in table 1.
Table 1: performance test table
As can be seen from the above table, the indices of drill bit of the present invention is obviously better than plain bearing of the prior art, and drilling efficiency improves greatly, and anti-sticking effect completely outstripped the expection level of those skilled in the art.Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (9)
1. an anti-sticking drilling tool, comprise drill bit and drilling rod, it is characterized in that: described drill bit (1) is made up of a semicircle (9) and a semiellipse (10), the external surface of described semicircle (9) is semicircle, the external surface of described semiellipse (10) is half elliptic, described semicircle and described half elliptic together constitute the external surface of described drill bit (1), the inner surface of described drill bit (1) is rounded, the external surface of described drill bit (1) has chip removal notch (11), the center of circle of the described circle of the inner surface of described drill bit (1) is concentric with the center of circle of described semicircle (9), and it is also concentric with semiellipse (10), be concentric point (3), some inside projections (13) are evenly placed with at the inner surface of described drill bit (1), described projection (13) is made for cobalt-nickel alloy, there is drill bit internal clearance A (8) between drill bit (1) and interior core (5), drill bit external series gap B (12) is formed between drill bit (1) and outer core (4), the gap length of described external series gap B is greater than the gap length of described internal clearance A, certain distance is offset between the drilling rod junction (2) of described drilling rod and described concentric point (3), for eccentric throw C, and meet following relation: the 2-3 that the gap length of described external series gap B equals eccentric throw C doubly with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals the 1.5-1.8 of described half radius of a circle (7) doubly.
2. drilling tool as claimed in claim 1, it is characterized in that, the gap length of described external series gap B equal 3 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals the 1.5-1.6 of described half radius of a circle (7) doubly.
3. drilling tool as claimed in claim 1, it is characterized in that, the gap length of described external series gap B equal 2 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals the 1.6-1.8 of described half radius of a circle (7) doubly.
4. drilling tool as claimed in claim 1, it is characterized in that, the gap length of described external series gap B equal 3 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals 1.6 times of described half radius of a circle (7).
5. drilling tool as claimed in claim 3, it is characterized in that, the gap length of described external series gap B equal 2 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals 1.7 times of described half radius of a circle (7).
6. drilling tool as claimed in claim 2, it is characterized in that, the gap length of described external series gap B equal 3 times of eccentric throw C with the gap length sum of described internal clearance A (8), described semielliptical semi-major axis (6) equals 1.5 times of described half radius of a circle (7).
7. the application of drilling tool as described in any one of claim 1-6, is characterized in that, use described drilling tool 30 stuck number of times to be no more than 3 times.
8. the application of drilling tool as described in any one of claim 7, is characterized in that, use described drilling tool 30 stuck number of times to be 2 times.
9. the application of drilling tool as described in any one of claim 7, is characterized in that, use described drilling tool 30 stuck number of times to be 1 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410418745.XA CN104265177A (en) | 2014-08-25 | 2014-08-25 | Clamping prevention drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410418745.XA CN104265177A (en) | 2014-08-25 | 2014-08-25 | Clamping prevention drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265177A true CN104265177A (en) | 2015-01-07 |
Family
ID=52156737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410418745.XA Pending CN104265177A (en) | 2014-08-25 | 2014-08-25 | Clamping prevention drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265177A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434106A (en) * | 2011-12-21 | 2012-05-02 | 中国海洋石油总公司 | Stratum core bit and stratum core drilling tool |
| CN202380978U (en) * | 2011-12-21 | 2012-08-15 | 中国海洋石油总公司 | Stratum coring drilling bit and stratum coring drilling tool |
| CN202645434U (en) * | 2012-04-26 | 2013-01-02 | 田仁礼 | Eccentric simultaneous casing drilling tool for expanding holes through rotation |
| CN202970490U (en) * | 2012-12-17 | 2013-06-05 | 谢龙水 | Novel diamond anchor rod drill |
| CN203125736U (en) * | 2012-12-27 | 2013-08-14 | 张卫岗 | Electroforming thin wall and continuous wave-shaped drilling tooth diamond drill bit |
-
2014
- 2014-08-25 CN CN201410418745.XA patent/CN104265177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434106A (en) * | 2011-12-21 | 2012-05-02 | 中国海洋石油总公司 | Stratum core bit and stratum core drilling tool |
| CN202380978U (en) * | 2011-12-21 | 2012-08-15 | 中国海洋石油总公司 | Stratum coring drilling bit and stratum coring drilling tool |
| CN202645434U (en) * | 2012-04-26 | 2013-01-02 | 田仁礼 | Eccentric simultaneous casing drilling tool for expanding holes through rotation |
| CN202970490U (en) * | 2012-12-17 | 2013-06-05 | 谢龙水 | Novel diamond anchor rod drill |
| CN203125736U (en) * | 2012-12-27 | 2013-08-14 | 张卫岗 | Electroforming thin wall and continuous wave-shaped drilling tooth diamond drill bit |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |