CN103015899B - A kind of Mixed drilling bit strengthening heart portion cutting function - Google Patents
A kind of Mixed drilling bit strengthening heart portion cutting function Download PDFInfo
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- CN103015899B CN103015899B CN201210552556.2A CN201210552556A CN103015899B CN 103015899 B CN103015899 B CN 103015899B CN 201210552556 A CN201210552556 A CN 201210552556A CN 103015899 B CN103015899 B CN 103015899B
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Abstract
The present invention relates to a kind of Mixed drilling bit of the strengthening heart portion cutting function for oil, natural gas and geological drilling, include bit body, bit body is arranged wing and nozzle, wing profile is divided into heart portion, inner cone, nose, shoulder and gauge section from the inside to the outside; Fixing cutting teeth is installed in the inner cone of wing upper slitter wing contour, nose, shoulder and gauge section, bit leg is arranged between wing, described bit leg upper end and bit body are connected into one, gear wheel is installed in the lower end of bit leg, gear wheel is installed on gear wheel cutting teeth, it is characterized in that described heart portion, bit body lower end is provided with movable cutting teeth.The present invention not only combination property is strong, precracking effectively can be carried out to bottom rock, make the effective wedging rock of the fixing cutting teeth of drill bit, and the impact that can reduce fixing cutting teeth, strengthen stock-removing efficiency and the rate of penetration in drill bit heart portion, thus improve stock-removing efficiency and the rate of penetration of drill bit entirety.
Description
Technical field
The present invention relates to a kind of Mixed drilling bit of the strengthening heart portion cutting function for oil, natural gas and geological drilling, this drill bit is applicable to the drilling well at hard formation and interlayer stratum.
Background technology
In the prior art, when drilling well runs into hard formation, conventional PDC diamond bit mainly realizes down-hole by scraping motion mode and creeps into, on the nose of diamond bit and shoulder, main fixing cutting teeth is difficult to effective wedging bottom rock, and the rate of penetration of diamond bit will become slowly; And rock bit is to impact crushing mode fractured rock, easily make rock produce darker crushing teeth hole, but due to stratum hard, rock can not be made to produce volumetric fracture, therefore the stock-removing efficiency of rock bit cutting teeth is also very low.In addition on the one hand, when drill bit runs into the more stratum of some soft or hard interlayers, the fixing cutting teeth of PDC diamond bit is very easily subject to impacting breakage, in order to tackle this situation, Chinese patent literature CN200880016630.0 discloses the Mixed drilling bit combined by rock bit and PDC diamond bit, though this Mixed drilling bit has stronger combination property, but there is following deficiency: impact because tricone bit is peculiar the rock breaking mechanism crushed, gear wheel rotates the shock loading produced and easily causes the fixing cutting teeth composite sheet of drill bit broken, thus cause the reduction of drill bit rate of penetration, and be fixing cutting teeth near drill bit axial centre on this drill bit, because this fixing cutting teeth is too near to drill bit axial centre, the radius of gyration is little, cutting speed is low, thus stock-removing efficiency is low, and this fixing cutting teeth speed cuts separately shaft bottom axial centre rock, the load of bearing is comparatively large, easily occurs that composite bed is broken or come off.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art and provides a kind of Mixed drilling bit strengthening heart portion cutting function, not only combination property is strong for it, precracking effectively can be carried out to bottom rock, make the effective wedging rock of the fixing cutting teeth of drill bit, and the impact that can reduce fixing cutting teeth, strengthen stock-removing efficiency and the rate of penetration in drill bit heart portion, thus improve stock-removing efficiency and the rate of penetration of drill bit.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is: include bit body, bit body is arranged wing and nozzle, and wing profile is divided into heart portion, inner cone, nose, shoulder and gauge section from the inside to the outside; Fixing cutting teeth is installed in the inner cone of wing upper slitter wing contour, nose, shoulder and gauge section, bit leg is arranged between wing, described bit leg upper end and bit body are connected into one, gear wheel is installed in the lower end of bit leg, gear wheel is installed on gear wheel cutting teeth, its difference is described heart portion, bit body lower end is provided with movable cutting teeth.
By such scheme, the outermost profile of described gear wheel cutting teeth covers line and covers outside line at the outermost profile of described fixing cutting teeth, and the outermost profile distance covered between line that the outermost profile of described gear wheel cutting teeth covers line and fixing cutting teeth is 0.3 ~ 5 millimeter.
By such scheme, described wing is 2 ~ 4; Described gear wheel is 2 ~ 4.
By such scheme, described movable cutting teeth comprises axial blind hole and installs the movable cutting teeth in axial blind hole, and axis and the bit body axis of movable cutting teeth deviate, and departing from distance is 0.5 ~ 40 millimeter.
By such scheme, described movable cutting teeth is circular shaft shape, leading section is provided with petal cutting teeth, axle portion is stairstepping, anterior diameter is less, the stairstepping axial blind hole phase configuration that movable cutting teeth and drill bit body-centered portion are arranged, be installed on axial baffle ring in axial blind hole, baffle ring connects firmly mutually with bit body.
By such scheme, described movable cutting teeth diameter is 5 ~ 40 millimeters, and the petal cutting teeth in described leading section is circumferentially provided with 2 ~ 5 cutting edges.
By such scheme, described gear wheel is insert cone, and described movable cutting teeth is made up of carbide alloy or polycrystalline diamond, or is composited by carbide alloy and polycrystalline diamond.
By such scheme, described fixing cutting teeth is diamond compact.
By such scheme, the rotation of described gear wheel becomes the angle of 30 ° ~ 70 ° with the rotation of bit body.
Beneficial effect of the present invention is: 1, the impact press-in of rock bit organically combined mutually with the scraping campaign of diamond bit, realize shaft bottom precracking, ensure the fixing effective wedging rock of cutting teeth, eliminate drill bit at some special formation generation stick-slip phenomenons, reduce the shock loading of fixing cutting teeth, reduce fixing cutting teeth and impact damaged probability, improve bit cutting efficiency and rate of penetration; 2, the movable cutting teeth installed of drill bit body-centered portion, due to relative to bit body axis bias, thus movable cutting teeth is larger relative to the movement velocity of bottom rock, namely the cutting speed of movable cutting teeth is larger, and the multi-tool edge of movable cutting teeth cuts simultaneously, enhance stock-removing efficiency and the rate of penetration in drill bit heart portion; 3, cover outside line because the outermost profile of gear wheel cutting teeth covers line at the outermost profile of described fixing cutting teeth, the shock loading that drill bit produces in the course of the work is born primarily of gear wheel cutting teeth, reduce further the shock loading of PDC composite sheet, decrease PDC composite sheet and impact damaged probability, thus improve overall stock-removing efficiency and the rate of penetration of drill bit.
Accompanying drawing explanation
Stereogram when Fig. 1 is one embodiment of the invention handstand.
Top view when Fig. 2 is one embodiment of the invention handstand.
Fig. 3 is the perspective view that the outermost profile of gear wheel cutting teeth of the present invention and fixing cutting teeth covers line.
Fig. 4 is the A-A sectional view of Fig. 2.
Fig. 5 is the partial enlarged drawing of the movable cutting teeth region in Fig. 4.
Fig. 6 is the stereogram of movable cutting teeth.
Fig. 7 is the stereogram of baffle ring.
Fig. 8 is when the bit is rotated, the cutting speed distribution map of the fixing cutting teeth in existing Mixed drilling bit or PDC drill bit heart portion.
Fig. 9 is the cutting speed distribution map of movable cutting teeth time rotational.
Figure 10 is the cutting speed distribution map after the velocity composite in Fig. 8 and Fig. 9.
Detailed description of the invention
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
Include bit body 1, bit body is circumferentially arranged 3 wings 2 and nozzle 7, the profile 17 of wing is divided into heart portion 21, inner cone 22, nose 23, shoulder 24 and gauge section 25 from the inside to the outside; On wing, the inner cone 22 of profile, nose 23, shoulder 24 and gauge section 25 are installed on fixing cutting teeth 3 respectively, and fixing cutting teeth 3 is diamond compact; Bit body is provided with bit leg 4 between each wing, described bit leg upper end and bit body 1 integrally welded, the lower end of bit leg arranges axle journal, and gear wheel 5 to be sleeved on axle journal and by steel ball axially locking, and the rotation 9 of gear wheel and the rotation 8 of bit body be at 45 ° ~ the angle α of 60 °.Gear wheel is installed on gear wheel cutting teeth 6, the gear wheel cutting teeth on described gear wheel is positioned at nose 23 and the shoulder 24 of wing profile.In the heart portion 21 of wing profile, that is the heart portion, lower end of bit body is provided with an axial blind hole, a movable cutting teeth 10 is installed on and by axial baffle ring 13 axial location in axial blind hole, axial blind hole axis that is movable cutting teeth axis 11 depart from relative to bit body axis 8, and departing from distance is 5 ~ 25 millimeters; Described movable cutting teeth is circular shaft shape, diameter is 10 ~ 30 millimeters, leading section is provided with petal cutting teeth, cutting teeth is circumferentially provided with 3 cutting edges 12, and axle portion is stairstepping, and anterior diameter is less, movable cutting teeth and stairstepping axial blind hole phase configuration, be installed on axial baffle ring in axial blind hole, baffle ring connects firmly mutually with bit body, and described movable cutting teeth is composited by carbide alloy and polycrystalline diamond.Described axial blind hole is shoulder hole, and axial baffle ring 13 is installed in the shoulder hole of lower end, and movable cutting teeth 10 can rotate in axial blind hole.The outermost profile of described gear wheel cutting teeth covers line 19 and covers outside line 18 at the outermost profile of described fixing cutting teeth, and the outermost profile distance C covered between line that the outermost profile of gear wheel cutting teeth covers line and fixing cutting teeth is 0.5 ~ 1 millimeter.
When bit body rotates around own axes 8, as shown in Figure 8, the part cutting speed near bit body axis 8 on the fixing cutting teeth in now Mixed drilling bit or PDC drill bit heart portion is very low for the cutting speed distribution map of the fixing cutting teeth in existing Mixed drilling bit or PDC drill bit heart portion; Movable cutting teeth is around own axes 11 time rotational, and the cutting speed distribution map of movable cutting teeth as shown in Figure 9; When movable cutting teeth is both with drill bit revolution, again around own axes 11 time rotational, as shown in Figure 10, the part cutting speed now near bit body axis 8 on movable cutting teeth has a more substantial increase the cutting speed distribution map of synthesis.
When the present invention works, the impact press-in of rock bit and the scraping campaign of diamond bit are combined, gear wheel cutting teeth realizes shaft bottom precracking, ensure the fixing effective wedging rock of cutting teeth, eliminate drill bit at some special formation generation stick-slip phenomenons, reduce the shock loading of fixing cutting teeth, reduce fixing cutting teeth and impact damaged probability, improve bit cutting efficiency and rate of penetration; The movable cutting teeth 10 that the centre of bit body is installed, due to relative to bit body axis bias, thus movable cutting teeth is larger relative to the movement velocity of bottom rock, namely movable cutting teeth cutting speed is larger, and the multi-tool edge of movable cutting teeth cuts simultaneously, improve stock-removing efficiency and the rate of penetration in drill bit heart portion further.
Claims (8)
1. strengthen a Mixed drilling bit for heart portion cutting function, include bit body, bit body is arranged wing and nozzle, wing profile is divided into heart portion, inner cone, nose, shoulder and gauge section from the inside to the outside; Fixing cutting teeth is installed in the inner cone of wing upper slitter wing contour, nose, shoulder and gauge section, bit leg is arranged between wing, described bit leg upper end and bit body are connected into one, gear wheel is installed in the lower end of bit leg, gear wheel is installed on gear wheel cutting teeth, it is characterized in that described heart portion, bit body lower end is provided with movable cutting teeth; Described movable cutting teeth comprises axial blind hole and installs the movable cutting teeth in axial blind hole, and axis and the bit body axis of movable cutting teeth deviate, and departing from distance is 0.5 ~ 40 millimeter; Described movable cutting teeth is circular shaft shape.
2. by the Mixed drilling bit of strengthening heart portion according to claim 1 cutting function, it is characterized in that the outermost profile of described gear wheel cutting teeth covers line and covers outside line at the outermost profile of described fixing cutting teeth, the outermost profile distance covered between line that the outermost profile of described gear wheel cutting teeth covers line and fixing cutting teeth is 0.3 ~ 5 millimeter.
3., by the Mixed drilling bit of the strengthening heart portion cutting function described in claim 1 or 2, it is characterized in that described wing is 2 ~ 4.
4., by the Mixed drilling bit of strengthening heart portion according to claim 3 cutting function, it is characterized in that described gear wheel is 2 ~ 4.
5. by the Mixed drilling bit of strengthening heart portion according to claim 3 cutting function, it is characterized in that described movable cutting teeth leading section is provided with petal cutting teeth, axle portion is stairstepping, anterior diameter is less, the stairstepping axial blind hole phase configuration that movable cutting teeth and drill bit body-centered portion are arranged, be installed on axial baffle ring in axial blind hole, baffle ring connects firmly mutually with bit body.
6., by the Mixed drilling bit of strengthening heart portion according to claim 5 cutting function, it is characterized in that described movable cutting teeth diameter is 5 ~ 40 millimeters, the petal cutting teeth in described leading section is circumferentially provided with 2 ~ 5 cutting edges.
7., by the Mixed drilling bit of the strengthening heart portion cutting function described in claim 5 or 6, it is characterized in that described gear wheel is insert cone, described movable cutting teeth is made up of carbide alloy or polycrystalline diamond, or is composited by carbide alloy and polycrystalline diamond.
8., by the Mixed drilling bit of the strengthening heart portion cutting function described in claim 1 or 2, it is characterized in that the rotation of described gear wheel becomes 30 ° ~ 70 ° angles with the rotation of bit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552556.2A CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552556.2A CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
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| Publication Number | Publication Date |
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| CN103015899A CN103015899A (en) | 2013-04-03 |
| CN103015899B true CN103015899B (en) | 2015-07-29 |
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| CN201210552556.2A Active CN103015899B (en) | 2012-12-19 | 2012-12-19 | A kind of Mixed drilling bit strengthening heart portion cutting function |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113995A (en) * | 2015-08-10 | 2015-12-02 | 宝鸡石油机械有限责任公司 | Composite drill bit with core rock breaking capability improved |
| CN106014266B (en) * | 2016-08-02 | 2019-05-10 | 西南石油大学 | A kind of dise knife formula composite drill bit suitable for bad ground |
| CN106285490A (en) * | 2016-08-30 | 2017-01-04 | 宝鸡石油机械有限责任公司 | A kind of gear wheel is arranged in the composite drill bit on wing |
| CN106968595B (en) * | 2017-04-27 | 2019-04-26 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN107975341B (en) * | 2017-10-25 | 2019-07-09 | 中国石油天然气股份有限公司 | The installation method of drill hammer tooth, drill hammer and drill hammer tooth |
| US10907414B2 (en) * | 2017-11-09 | 2021-02-02 | Baker Hughes, A Ge Company, Llc | Earth boring tools having fixed blades and varying sized rotatable cutting structures and related methods |
| CN107747473B (en) * | 2017-11-16 | 2024-04-16 | 中石化江钻石油机械有限公司 | Insert cone hybrid bit |
| CN107905737B (en) | 2017-12-21 | 2021-07-27 | 中石化江钻石油机械有限公司 | Three-stage cutting insert cone hybrid bit |
| CN108500001B (en) * | 2018-03-19 | 2020-12-01 | 福建工程学院 | Spiral tool bit of cement silo cleaning machine |
| CN109898998A (en) * | 2019-03-03 | 2019-06-18 | 兰州城市学院 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
| CN109667545A (en) * | 2019-03-03 | 2019-04-23 | 兰州城市学院 | A kind of gear wheel PDC two-stage cutting composite drill bit |
| CN110792397B (en) * | 2019-12-11 | 2022-05-13 | 西南石油大学 | Composite drill bit |
| US11255128B2 (en) | 2020-01-23 | 2022-02-22 | Saudi Arabian Oil Company | Drilling boreholes with a hybrid bit |
| US11268325B2 (en) | 2020-03-31 | 2022-03-08 | Saudi Arabian Oil Company | Directional drilling |
| US11473813B2 (en) | 2020-05-13 | 2022-10-18 | Saudi Arabian Oil Company | Well completion converting a hydrocarbon production well into a geothermal well |
| US11599955B2 (en) | 2021-01-04 | 2023-03-07 | Saudi Arabian Oil Company | Systems and methods for evaluating and selecting completion equipment using a neural network |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1394769A (en) * | 1920-05-18 | 1921-10-25 | C E Reed | Drill-head for oil-wells |
| US2244537A (en) * | 1939-12-22 | 1941-06-03 | Archer W Kammerer | Well drilling bit |
| US2320136A (en) * | 1940-09-30 | 1943-05-25 | Archer W Kammerer | Well drilling bit |
| GB2123881B (en) * | 1982-07-20 | 1985-11-13 | Sumitomo Metal Mining Co | Well drilling bit |
| US7845435B2 (en) * | 2007-04-05 | 2010-12-07 | Baker Hughes Incorporated | Hybrid drill bit and method of drilling |
| US8678111B2 (en) * | 2007-11-16 | 2014-03-25 | Baker Hughes Incorporated | Hybrid drill bit and design method |
| CN101382045A (en) * | 2008-07-30 | 2009-03-11 | 江汉石油钻头股份有限公司 | Three-cone bit for horizontal well and hard formation well |
| US8047307B2 (en) * | 2008-12-19 | 2011-11-01 | Baker Hughes Incorporated | Hybrid drill bit with secondary backup cutters positioned with high side rake angles |
| US8141664B2 (en) * | 2009-03-03 | 2012-03-27 | Baker Hughes Incorporated | Hybrid drill bit with high bearing pin angles |
| CN101892810B (en) * | 2010-07-16 | 2012-07-25 | 西南石油大学 | Combined drill breaking rocks by cutting method |
| US8978786B2 (en) * | 2010-11-04 | 2015-03-17 | Baker Hughes Incorporated | System and method for adjusting roller cone profile on hybrid bit |
| CN202990861U (en) * | 2012-12-19 | 2013-06-12 | 江汉石油钻头股份有限公司 | Hybrid drill bit with strengthened core cutting function |
-
2012
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Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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Effective date of registration: 20180223 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION |
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