CN112943103B - Drill bit, rock breaking tool and drill bit manufacturing method - Google Patents
Drill bit, rock breaking tool and drill bit manufacturing method Download PDFInfo
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- CN112943103B CN112943103B CN201911171347.1A CN201911171347A CN112943103B CN 112943103 B CN112943103 B CN 112943103B CN 201911171347 A CN201911171347 A CN 201911171347A CN 112943103 B CN112943103 B CN 112943103B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000011435 rock Substances 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 49
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000036346 tooth eruption Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- 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)
- Earth Drilling (AREA)
Abstract
According to the drill bit, the rock breaking tool and the drill bit manufacturing method, the plurality of chip teeth are arranged on the blades on the drill bit body, the included angle between the side wall of the protruding portion of each chip tooth and the body portion is related to the drilling speed, the set rotating speed of the drill bit body and the distance between the central axis of the drill bit body and the body portion of the chip teeth, and therefore the combination of static data, dynamic data and target data is achieved, the combination of 3 types of parameters is achieved, the outside chip speed is fast, the smoothness of a well hole is guaranteed, and the purposes of prolonging the service life of the drill bit and improving the quality of the well hole are achieved. The design of the drill bit considers the drill bit attribute, the production dynamics and the target parameter of drilling speed, and the economic maximization under the conditions of specific blocks and specific production parameters is realized.
Description
Technical Field
The invention relates to the field of petroleum exploration, in particular to a drill bit, a rock breaking tool and a drill bit manufacturing method.
Background
Along with the continuous deep development work of oil and gas field exploration, the stratum structure of the drilled well is more and more complex, the drilling difficulty is more and more great, and in order to reduce the comprehensive drilling cost, the higher requirement is put forward on the quality of the drill bit. Since the last eighties of PDC (Polycrystalline Diamond Compact bit) drill bits, the high-efficiency rock breaking tool has the characteristics of high average mechanical drilling speed, large footage, long service life and the like, and has become a high-efficiency rock breaking tool widely popularized and applied in the petroleum and natural gas industry gradually, and the production technology of the high-efficiency rock breaking tool is continuously improved and the use amount is increased year by year along with the continuous deep understanding of people on the next-generation PDC drill bits.
The PDC rock breaking tool mainly comprises chip teeth, the quality of the chip teeth directly determines the drilling speed, and the drilling speed is driven by the drilling process, the drill bit design and the drill bit hydraulic structure from the late seventies of the twentieth century to the late eighties. Paving a road for the rapid development of PDC cutting teeth. The competition in the field of cutters, the growing bit market, the demands of bit company customers, etc. has also driven the forward development of PDC technology.
Disclosure of Invention
To address at least one of the above-mentioned deficiencies, a first aspect of the present application provides a drill bit comprising:
a bit body;
the edge of each blade is provided with a plurality of chip teeth, and each chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body.
In certain embodiments, the set drilling speed is an average drilling speed.
In some embodiments, a calculation formula of an angle between an end surface of the body portion, which is far away from the blade, and the protruding portion side wall is:
In certain embodiments, the number of blades is 4 to 6.
In certain embodiments, the number of chip teeth on each of the blades is 4 to 10.
An embodiment of a second aspect of the present application provides a method for manufacturing a drill, including:
forming a drill bit body;
fixing a plurality of blades on the side of the bit body;
a plurality of chip teeth are arranged on the edge of each blade; the chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body.
In certain embodiments, the set drilling speed is an average drilling speed.
In some embodiments, a calculation formula of an angle between an end surface of the body portion, which is far away from the blade, and the protruding portion side wall is:
In certain embodiments, the number of blades is 4 to 6.
A third aspect of the present application provides a rock breaking tool comprising a driving device and a drill bit connected to the driving device, driven by the driving device, the drill bit comprising:
a bit body;
the edge of each blade is provided with a plurality of chip teeth, and each chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body.
The beneficial effects of this application are as follows:
according to the drill bit, the rock breaking tool and the drill bit manufacturing method, the plurality of chip teeth are arranged on the blades on the drill bit body, the included angle between the side wall of the protruding portion of each chip tooth and the body portion is related to the drilling speed, the set rotating speed of the drill bit body and the distance between the central axis of the drill bit body and the body portion of the chip teeth, and therefore the combination of static data, dynamic data and target data is achieved, the combination of 3 types of parameters is achieved, the outside chip speed is fast, the smoothness of a well hole is guaranteed, and the purposes of prolonging the service life of the drill bit and improving the quality of the well hole are achieved. The design of the drill bit considers the drill bit attribute, the production dynamics and the target parameter of drilling speed, and the economic maximization under the conditions of specific blocks and specific production parameters is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a bit structure diagram in an embodiment of the present application.
Fig. 2 shows a schematic view of the structure of the chip teeth provided on the wing panel of the drill in the embodiment of the present application.
Fig. 3 shows a schematic view of the structure of a chip tooth in an embodiment of the present application.
Fig. 4 shows a schematic view of the dimensions of a chip tooth in an embodiment of the present application.
Fig. 5a to 5e show different sizes of 5 chip teeth in an embodiment of the present application.
Fig. 6 shows a schematic flow chart of a method for manufacturing a drill bit in an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 shows a bit structure diagram in an embodiment of the present application, fig. 2 shows a schematic diagram of a structure in which chip teeth are provided on a vane of a bit in an embodiment of the present application, fig. 3 shows a schematic diagram of a chip tooth in an embodiment of the present application, and fig. 4 shows a schematic diagram of a size of a chip tooth in an embodiment of the present application. The drill bit provided by the embodiment of the invention specifically comprises: a bit body 1; and a plurality of blades 2 inserted at the side of the bit body, the edge of each blade 2 being provided with a plurality of chip teeth 3 including a body portion 31 and a protrusion portion 32 formed by protruding outward from one end surface of the body portion 31; the included angle between the side wall of the protruding part 32 of each chip tooth 3 and the surface of the body part 31 forming the protruding part is determined according to the distance between the central axis of the drill bit body 1 and the body part 31 of the chip tooth 3, the set drilling speed and the set rotating speed of the drill bit body.
According to the drill bit, the plurality of chip teeth are arranged on the blades on the drill bit body, the included angle between the side wall of the protruding part of each chip tooth and the body part is related to the drilling speed, the set rotating speed of the drill bit body and the distance between the central axis of the drill bit body and the body part of the chip teeth, so that the combination of static data, dynamic data and target data is realized, the combination of 3 types of parameters is realized, the outside chip speed is fast, the smoothness of a well hole is guaranteed, and the purposes of prolonging the service life of the drill bit and improving the quality of the well hole are achieved. The design of the drill bit considers the drill bit attribute, the production dynamics and the target parameter of drilling speed, and the economic maximization under the conditions of specific blocks and specific production parameters is realized.
Specifically, the calculation formula of the included angle between the end face of the body part far away from the blade and the side wall of the protruding part is as follows:
In the formula, the combination of static data, dynamic data and target data is realized, and the combination belongs to the combination of 3 types of parameters, which is not considered by any other drill bit, and belongs to the first time at home and abroad, wherein R is the size of the drill bit, is the characteristic parameter of the drill bit, and belongs to the static parameter.
N is production data when rotating speed, is dynamic data, and the rotating speed of the drilling machine in China is divided into 45 revolutions per minute, 50 revolutions per minute, 60 revolutions per minute, 70 revolutions per minute and 90 revolutions per minute. v is the average drilling speed, the rotational speed is listed in a calculation formula, the basic condition of the current production power is considered, the drill bit parameter design is more targeted,
v is the average drilling speed, directly influences the length of drilling time and the manpower and material resources consumed by drilling, different blocks have different drilling design quota and limit drilling speed, and below the speed, the drilling cost is exponentially increased, so the drilling operation speed directly influences the economic benefit of the final operation.
It will be appreciated that the present drill bit design takes into account both drill bit attributes and production dynamics as well as target parameters including drilling speed to achieve economic maximization at specific block and production parameters.
Preferably, the PDC drill bit comprises 4-6 blades, each blade is provided with 4-10 cutting teeth, the main material is hard alloy steel, and the drill bit rotates and pressurizes in the drilling process, and the cutting teeth eat into a milk stratum to break and drill.
The larger the R of the chip tooth is, the larger the angle is, and in the actual use process, the abrasion of the chip tooth at the outermost part is the most serious, but the height difference balances the difference of the abrasion at the inner part and the outer part, so that the service life of the drill bit is prolonged.
In the embodiment shown in fig. 2, the drill body is provided with 5 chip teeth on each blade, the middle part of the chip teeth is protruded, the included angle theta (see fig. 1) between the line of the chip teeth protruded by the cone of the chip teeth and the chip teeth body is gradually increased from inside to outside, and the angle design is related to the drilling speed, so that the external chip speed is high, the smoothness of a well hole is ensured, and the purposes of prolonging the service life of the drill and improving the quality of the well hole are achieved.
The parameters of the chip tooth in fig. 5a to 5e are shown in table 1 below:
TABLE 1 parameter Table of chip teeth
| Chip tooth numbering | 1 | 2 | 3 | 4 | 5 |
| |
5 | 9.5 | 14.3 | 18.2 | 22.3 |
| H(mm) | 1.21 | 1.82 | 2.21 | 2.69 | 3.07 |
Through data verification, the drill bit drills to 4000m high-abrasive stratum in certain oil field application, the drilling speed of the original drill bit is reduced due to high stratum strength, the mechanical drilling speed is 9m/h, and the service life of the drill bit is prolonged from 162 hours to 215 hours, and is improved by 32.7%.
Fig. 6 shows a method for manufacturing a drill bit according to an embodiment of the present application, which specifically includes:
s1: forming a drill bit body;
s2: fixing a plurality of blades on the side of the bit body;
s3: a plurality of chip teeth are arranged on the edge of each blade; the chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body.
Based on the same inventive concept, in certain embodiments, the set drilling speed is an average drilling speed.
Based on the same inventive concept, in some embodiments, a calculation formula of an included angle between an end surface of the body portion, which is far away from the blade, and the protruding portion side wall is:
Based on the same inventive concept, in certain embodiments, the number of blades is 4 to 6.
It can be appreciated that by the drill bit manufacturing method provided by the embodiment of the application, by installing the plurality of chip teeth on the blades on the drill bit body, the included angle between the side wall of the protruding part of each chip tooth and the body part is related to the drilling speed, the set rotating speed of the drill bit body and the distance between the central axis of the drill bit body and the body part of the chip teeth, so that the combination of static data, dynamic data and target data is realized, the combination of 3 types of parameters is realized, the external chip speed is fast, the smoothness of a well hole is ensured, and the purposes of prolonging the service life of the drill bit and improving the quality of the well hole are achieved. The design of the drill bit considers the drill bit attribute, the production dynamics and the target parameter of drilling speed, and the economic maximization under the conditions of specific blocks and specific production parameters is realized.
An embodiment of a third aspect of the present application provides a rock breaking tool, including a driving device and a drill bit connected to the driving device, the drill bit being driven by the driving device, the drill bit comprising: a bit body; the edge of each blade is provided with a plurality of chip teeth, and each chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body.
It can be appreciated that, according to the rock breaking tool provided by the application, as the plurality of chip teeth are arranged on the blade on the bit body, the included angle between the side wall of the protruding part of each chip tooth and the body part is related to the drilling speed, the set rotating speed of the bit body and the distance between the central axis of the bit body and the body part of the chip teeth, so that the combination of static data, dynamic data and target data is realized, the combination of 3 types of parameters is realized, the external chip speed is fast, the smoothness of a well hole is ensured, and the purposes of prolonging the service life of the bit and improving the quality of the well hole are achieved. The design of the drill bit considers the drill bit attribute, the production dynamics and the target parameter of drilling speed, and the economic maximization under the conditions of specific blocks and specific production parameters is realized.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present specification. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. The foregoing is merely an example of an embodiment of the present disclosure and is not intended to limit the embodiment of the present disclosure. Various modifications and variations of the illustrative embodiments will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the embodiments of the present specification, should be included in the scope of the claims of the embodiments of the present specification.
Claims (8)
1. A drill bit, comprising:
a bit body;
the edge of each blade is provided with a plurality of chip teeth, and each chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body;
wherein, the calculation formula of the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is as follows:
2. The drill bit of claim 1, wherein the set drilling speed is an average drilling speed.
3. The drill bit of claim 1, wherein the number of blades is 4 to 6.
4. The drill bit of claim 1, wherein the number of chip teeth on each of the blades is 4 to 10.
5. A method of making a drill bit, comprising:
forming a drill bit body;
fixing a plurality of blades on the side of the bit body;
a plurality of chip teeth are arranged on the edge of each blade; the chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body;
wherein, the calculation formula of the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is as follows:
6. The method of claim 5, wherein the set drilling speed is an average drilling speed.
7. The method of claim 5, wherein the number of blades is 4 to 6.
8. A rock breaking tool comprising a driving device and a drill bit connected to the driving device and driven by the driving device, the drill bit comprising:
a bit body;
the edge of each blade is provided with a plurality of chip teeth, and each chip tooth comprises a body part fixed on the blade and a protruding part combined and fixed on the end face of the body part far away from the blade; wherein,,
the included angle between the end face of the body part far away from the blade and the side wall of the protruding part is determined according to the distance between the central axis of the drill bit body and the body part of the chip tooth, the set drilling speed and the set rotating speed of the drill bit body;
wherein, the calculation formula of the included angle between the end face of one end of the body part far away from the blade and the side wall of the protruding part is as follows:
Priority Applications (1)
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| CN201911171347.1A CN112943103B (en) | 2019-11-26 | 2019-11-26 | Drill bit, rock breaking tool and drill bit manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911171347.1A CN112943103B (en) | 2019-11-26 | 2019-11-26 | Drill bit, rock breaking tool and drill bit manufacturing method |
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| CN112943103B true CN112943103B (en) | 2023-05-26 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4341054A1 (en) * | 1993-12-02 | 1995-06-08 | Hawera Probst Kg Hartmetall | Rock drilling tool esp. for percussive drilling |
| US20040231894A1 (en) * | 2003-05-21 | 2004-11-25 | Dvorachek Harold A | Rotary tools or bits |
| CN201513124U (en) * | 2009-09-21 | 2010-06-23 | 深圳市海明润实业有限公司 | Plowing type diamond compound plate drill tooth |
| CN104727752B (en) * | 2013-12-18 | 2017-12-26 | 中国石油化工股份有限公司 | A kind of polycrystal diamond composite teeth and its manufacture method and a kind of drill bit |
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN105178868B (en) * | 2015-08-07 | 2017-07-07 | 中国石油天然气股份有限公司 | Design method and device of PDC drill bit and PDC drill bit |
| CN105134084A (en) * | 2015-08-17 | 2015-12-09 | 宝鸡石油机械有限责任公司 | PDC drilling bit with mixed pre-crushing tooth arrangement |
| CN207436926U (en) * | 2017-11-08 | 2018-06-01 | 宝鸡市秦新金属制品有限责任公司 | The tapered metal cup of tooth is bored for drill bit |
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