CN113216861B - PDC drill bit suitable for directional drilling - Google Patents
PDC drill bit suitable for directional drilling Download PDFInfo
- Publication number
- CN113216861B CN113216861B CN202110584502.3A CN202110584502A CN113216861B CN 113216861 B CN113216861 B CN 113216861B CN 202110584502 A CN202110584502 A CN 202110584502A CN 113216861 B CN113216861 B CN 113216861B
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- drill bit
- heat dissipation
- several
- radiating
- pipe
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- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims abstract description 101
- 238000001816 cooling Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 34
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- 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
- E21B12/00—Accessories for drilling tools
- E21B12/04—Drill bit protectors
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)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of PDC drill bits, in particular to a PDC drill bit suitable for directional drilling, which effectively reduces the generation of internal stress during drilling to prolong the service life of the drill bit and comprises a drill bit base body, wherein the top end of the drill bit base body is provided with a drill handle, the bottom end of the drill bit base body is provided with a plurality of blades, a radiating block is arranged between the drill bit base body and the drill handle, the inside of the radiating block is provided with a radiating cavity, the periphery of the side surface of the radiating cavity is surrounded with a cooling cavity, the inside of the drill bit base body is provided with a plurality of water outlet pipes and water return pipes, the top end of each water outlet pipe is communicated with the periphery of the bottom end of the radiating cavity, the top end of each water return pipe extends into the periphery of the top part of the inside of the radiating cavity, the periphery of the inside of each blade is provided with a radiating pipe, the top end of each radiating pipe is respectively communicated with the bottom end of the water return pipe, and the top end of the radiating cavity is provided with a plurality of anti-expansion pipes, the inside of heat dissipation chamber, outlet pipe, wet return and cooling tube all is filled with the radiating fluid.
Description
Technical Field
The invention relates to the technical field of PDC drill bits, in particular to a PDC drill bit suitable for directional drilling.
Background
As is well known, PDC bits are important tools for oil drilling on land and in the ocean for china oil and gas group companies, china petrochemical group companies, and china marine oil group companies. The high-tech drilling fluid is a high-tech product introduced in China at the end of the last century, is used for drilling in homogeneous soft to medium-hard strata, and has the advantages of high speed, long service life, low unit footage cost and the like.
However, in the drilling process of the drill bit, water is often sprayed on the surface of the drill bit to cool the drill bit, but when the drill bit is subjected to friction cutting with a stratum in the drilling process of the drill bit, the inside of the drill bit generates more heat, and the heat is stored in the drill bit and cannot be cooled by the water sprayed on the surface of the drill bit, so that greater internal stress is generated in the drill bit, the service life of the drill bit cannot be further prolonged, and the replacement rate and the cost of the drill bit are increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the PDC drill bit suitable for directional drilling, which effectively reduces the generation of internal stress during drilling and prolongs the service life of the drill bit.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a PDC drill bit suitable for directional drilling comprises a drill bit base body, wherein a drill handle is arranged at the top end of the drill bit base body, a plurality of blades are arranged at the bottom end of the drill bit base body, the blades are arranged at the same interval and are arranged at the bottom end and the side surface of the drill bit base body, a radiating block is arranged between the drill bit base body and the drill handle, a radiating cavity is arranged inside the radiating block, a cooling cavity is arranged around the side surface of the radiating cavity and is annular, a plurality of cooling pipes are arranged around the cooling cavity, which is close to the side surface of the radiating block, each cooling pipe is communicated with the cooling cavity, a plurality of water outlet pipes and water return pipes are arranged inside the drill bit base body, the top end of each water outlet pipe is communicated with the periphery of the bottom end of the radiating cavity, the top end of each water return pipe extends into the periphery of the top of the inside of the radiating cavity and is communicated with the radiating cavity, radiating pipes are arranged around the inside of each blade, and the top ends of the radiating pipes are respectively communicated with the bottom ends of the water return pipes, the bottom of every cooling tube communicates with the bottom of outlet pipe respectively, and the top in heat dissipation chamber is provided with the several and prevents the expand tube to all communicate with the heat dissipation chamber, the top of every expansion tube of preventing all passes the top of radiating block and stretches into the inside of drillstock, and the inside of heat dissipation chamber, cooling chamber, several cooling tube, several outlet pipe, several wet return and several cooling tube all is filled with the radiating fluid.
Further, the heat dissipation liquid is heat dissipation oil.
Furthermore, the bottom of every cooling tube and the bottom of side all are provided with the several heat pipe to all communicate with the cooling tube.
Further, the interval between the several heat pipes all is the same setting.
Furthermore, a plurality of heat dissipation holes are formed in the top end of the heat dissipation cavity, and the intervals among the plurality of heat dissipation holes are arranged in the same mode.
Further, every heat pipe and cooling tube all are all the slice setting.
Furthermore, the diameter of each expansion-proof pipe is 2.5 times larger than that of the water outlet pipe and the water return pipe.
Furthermore, the inner walls of the heat dissipation cavity, the cooling cavity, the plurality of cooling pipes, the plurality of water outlet pipes, the plurality of water return pipes and the plurality of heat dissipation pipes are provided with antirust coatings.
(III) advantageous effects
Compared with the prior art, the PDC drill bit suitable for directional drilling provided by the invention has the following beneficial effects:
the PDC drill bit suitable for directional drilling absorbs heat generated by drilling of the blades through the heat dissipation liquid in the heat dissipation pipe, then the heat rises and flows upwards until the heat flows into the heat dissipation cavity, cold heat dissipation liquid in the heat dissipation cavity flows downwards through the water outlet pipe to form a loop, so that when the drill bit is used, the interior of the drill bit can have good heat dissipation, internal stress generated by drilling of the drill bit is effectively reduced, the heat dissipation liquid at the bottom of the heat dissipation pipe rises and moves upwards when the drill bit is used through the principle that high-temperature liquid moves upwards and low-temperature liquid moves downwards, the heat dissipation liquid in the drill bit cannot flow when the drill bit is not used, when the heat generated by the blades of the drill bit is transferred to the heat dissipation liquid, the heat dissipation liquid at the bottom of the heat dissipation pipe rises and moves upwards when the drill bit is used, the loop is formed, the drill bit can be effectively cooled when the drill bit is used, the plurality of expansion prevention pipes communicated with the heat dissipation cavity are arranged at the top end of the heat dissipation cavity, and the liquid in the heat dissipation cavity expands when being heated, can flow into the inside of several anti-expansion pipes, and effectively prevent the inside liquid of heat dissipation chamber because the thermal expansion extrudes this drill bit, increase the security of this drilling oil.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged, partial, schematic view of FIG. 1 at A;
FIG. 3 is an enlarged, partial, schematic view of FIG. 1 at B;
fig. 4 is a partial top view of the blade shown in fig. 1 according to the present invention.
In the figure: 1. a drill bit substrate; 2. a drill shank; 3. a blade; 4. a heat dissipating block; 5. a heat dissipation cavity; 6. a cooling chamber; 7. a cooling tube; 8. a water outlet pipe; 9. a water return pipe; 10. a radiating pipe; 11. preventing tube expansion; 12. a heat dissipating liquid; 13. a heat conducting pipe; 14. and (4) heat dissipation holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the PDC drill bit suitable for directional drilling according to the present invention includes a drill bit base 1, a drill shank 2 disposed at a top end of the drill bit base 1 for fixing the drill bit, a plurality of blades 3 disposed at a bottom end of the drill bit base 1 for providing cutting force for drilling, the blades 3 having the same spacing therebetween to make the drill bit more stable and reliable during drilling, and being disposed at a bottom end and a side surface of the drill bit base 1, a heat dissipation block 4 disposed between the drill bit base 1 and the drill shank 2, the heat dissipation block 4 being cylindrical and integrally disposed between the drill bit base 1 and the drill shank 2, a heat dissipation cavity 5 disposed inside the heat dissipation block 4, a cooling cavity 6 disposed around a side surface of the heat dissipation cavity 5, the cooling cavity 6 being annular, a plurality of cooling pipes 7 disposed around a side surface of the cooling cavity 6 near the heat dissipation block 4, each cooling pipe 7 being communicated with the cooling cavity 6, the liquid in the heat dissipation cavity 5 can be cooled faster through the cooling cavity 6 and the plurality of cooling pipes 7 arranged on the side surface of the heat dissipation cavity 5, the plurality of water outlet pipes 8 and the water return pipes 9 are arranged in the drill bit base body 1, the top end of each water outlet pipe 8 is communicated with the periphery of the bottom end of the heat dissipation cavity 5, the liquid in the heat dissipation cavity 5 can flow into the water outlet pipes 8, the top end of each water return pipe 9 extends into the periphery of the top part of the inside of the heat dissipation cavity 5 and is communicated with the heat dissipation cavity 5, the liquid in the water return pipe 9 is hot, as the hot liquid flows upwards, the cold liquid flows downwards, the liquid in the water return pipe 9 can flow into the top part of the heat dissipation cavity 5, the heat dissipation pipes 10 are arranged around the inside each blade 3, the top end of each heat dissipation pipe 10 is respectively communicated with the bottom ends of the plurality of water return pipes 9, the bottom ends of each heat dissipation pipe 10 are respectively communicated with the bottom ends of the plurality of the water outlet pipes 8, the radiating pipe 10 radiates heat to the inside of each blade 3, effectively preventing the inside of the blade 3 from generating more internal stress, thereby effectively preventing the blade 3 from cracking, increasing the hardness of the blade 3 and prolonging the service life of the blade 3, the top end of the heat dissipation cavity 5 is provided with a plurality of expansion-proof pipes 11, and are communicated with the heat dissipation cavity 5, the top end of each expansion-proof pipe 11 passes through the top end of the heat dissipation block 4 and extends into the drill shank 2, the liquid in the heat dissipation cavity 5 can flow into the anti-expansion pipes 11 when being heated and expanded through the plurality of anti-expansion pipes 11 arranged at the top end of the heat dissipation cavity 5 and communicated with the heat dissipation cavity, and the liquid in the heat dissipation cavity 5 is effectively prevented from extruding the drill bit due to thermal expansion, the safety of the drilling oil is improved, and the heat dissipation liquid 12 is filled in the heat dissipation cavity 5, the cooling cavity 6, the plurality of cooling pipes 7, the plurality of water outlet pipes 8, the plurality of water return pipes 9 and the plurality of heat dissipation pipes 10.
The heat dissipation liquid 12 is heat dissipation oil, so that the heat dissipation liquid 12 has a better heat dissipation effect.
Wherein, the bottom of each heat dissipation tube 10 and the bottom of the side surface are both provided with a plurality of heat conduction pipes 13 and are both communicated with the heat dissipation tube 10, and the heat dissipation liquid 12 inside the heat dissipation tube 10 flows into the plurality of heat conduction pipes 13, so that the heat dissipation effect of the heat dissipation tube 10 is greatly increased.
Wherein, the interval between the several heat pipes 13 all is the same setting, makes the radiating effect of heat pipe 13 can be more even.
Wherein, the top in heat dissipation chamber 5 is provided with several louvre 14, and the interval between the several louvre 14 all is the same setting, and the radiating fluid 12 in the heat dissipation chamber 5 can get into in the several louvre 14 after the thermal expansion, makes the radiating fluid 12 in the heat dissipation chamber 5 can cool off more fast.
Wherein, every heat pipe 13 and cooling tube 10 all are all the slice setting that is, can have more stable radiating effect around the bottom of messenger's wing 3, and radiating effect can be more even.
Wherein, the diameter of each anti-expansion pipe 11 is 2.5 times larger than the diameters of the water outlet pipe 8 and the water return pipe 9, so that more heat dissipation liquid 12 can flow into the expansion pipe, the expansion volume of the heat dissipation liquid 12 is effectively prevented from being too large, and the use stability of the drill bit is improved.
Wherein, all be provided with rust-resistant cladding material on the inner wall of heat dissipation chamber 5, cooling chamber 6, several cooling tube 7, several outlet pipe 8, several wet return 9 and several cooling tube 10, make the inside of heat dissipation chamber 5, cooling chamber 6, several cooling tube 7, several outlet pipe 8, several wet return 9 and several cooling tube 10 have good rust-resistant and anticorrosion effect.
To sum up, the PDC drill bit suitable for directional drilling has the working principle that when the drill bit is not used, the heat dissipation liquid 12 in the heat dissipation cavity 5 is in a static state at normal temperature, when the drill bit is used for drilling, the blades 3 on the drill bit generate heat through friction, and simultaneously the heat dissipation pipes 10 in the blades 3 absorb the heat generated by the blades 3, so that the blades move upwards due to temperature rise, and meanwhile, the heat dissipation liquid 12 in the heat dissipation cavity 5 flows into the water outlet pipe 8 due to the influence of water pressure, and the heat dissipation liquid 12 in the heat dissipation pipes 10 with the temperature rise flows into the water return pipe 9 and flows upwards until the heat dissipation liquid flows into the heat dissipation cavity 5 for heat dissipation, and the cooling cavity 6 and the cooling pipe 7 around the heat dissipation cavity 5 pour the heat dissipation liquid 12 into the side surface of the heat dissipation block 4 and dissipate the heat, so that the heat dissipation liquid 12 in the heat dissipation cavity 5 is cooled, and the cooled heat dissipation liquid 12 flows downwards, and the drill bit enters the water outlet pipe 8 and circulates in a reciprocating manner, so that the interior of the drill bit has a good heat dissipation effect, the internal stress generated in the drill bit is greatly reduced, the abrasion of the blade 3 is reduced, and the service life of the drill bit is prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a be suitable for PDC drill bit of directional drilling, includes drill bit base member (1), the top of drill bit base member (1) is provided with drillstock (2), the bottom of drill bit base member (1) is provided with several wing (3), the several interval between wing (3) is the same to all set up in the bottom and the side of drill bit base member (1), its characterized in that: be provided with radiating block (4) between drill bit base member (1) and drillstock (2), the inside of radiating block (4) is provided with heat dissipation chamber (5), it is provided with cooling chamber (6) to encircle around the side of heat dissipation chamber (5), cooling chamber (6) are cyclic annular, be provided with several cooling tube (7) around being close radiating block (4) side of cooling chamber (6), every cooling tube (7) all communicate with cooling chamber (6), the inside of drill bit base member (1) is provided with several outlet pipe (8) and wet return (9), every the top of outlet pipe (8) all communicates around the bottom of heat dissipation chamber (5), every the top of wet return (9) all stretches into around the top of the inside of heat dissipation chamber (5) to communicate with heat dissipation chamber (5), every cooling tube (10) all are provided with around the wing of a knife (3) is inside, every the top of cooling tube (10) communicates with the bottom of wet return (9) respectively, every the bottom of cooling tube (10) communicates with the bottom of outlet pipe (8) respectively, the top of heat dissipation chamber (5) is provided with the several and prevents expand tube (11) to all communicate with heat dissipation chamber (5), every the top of preventing expand tube (11) all passes the top of radiating block (4) and stretches into the inside of drillstock (2), the inside of heat dissipation chamber (5), cooling chamber (6), several cooling tube (7), several outlet pipe (8), several wet return (9) and several cooling tube (10) all is filled with radiating fluid (12).
2. The PDC drill bit suitable for directional drilling of claim 1 wherein: the heat dissipation liquid (12) is heat dissipation oil.
3. The PDC drill bit suitable for directional drilling according to claim 1, wherein: the bottom of each radiating pipe (10) and the bottom of the side surface are provided with a plurality of heat conduction pipes (13) which are communicated with the radiating pipes (10).
4. A PDC bit suitable for directional drilling according to claim 3, wherein: the intervals among the plurality of heat conduction pipes (13) are all the same.
5. The PDC drill bit suitable for directional drilling of claim 1 wherein: the top of heat dissipation chamber (5) is provided with several louvre (14), several the interval between louvre (14) all is the same setting.
6. The PDC drill bit suitable for directional drilling of claim 4, wherein: every heat pipe (13) and cooling tube (10) all are all the slice setting.
7. The PDC drill bit suitable for directional drilling according to claim 1, wherein: the diameter of each expansion-proof pipe (11) is 2.5 times larger than that of the water outlet pipe (8) and the water return pipe (9).
8. The PDC drill bit suitable for directional drilling according to claim 1, wherein: all be provided with rust-resistant cladding material on the inner wall of heat dissipation chamber (5), cooling chamber (6), several cooling tube (7), several outlet pipe (8), several wet return (9) and several cooling tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584502.3A CN113216861B (en) | 2021-05-27 | 2021-05-27 | PDC drill bit suitable for directional drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584502.3A CN113216861B (en) | 2021-05-27 | 2021-05-27 | PDC drill bit suitable for directional drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113216861A CN113216861A (en) | 2021-08-06 |
| CN113216861B true CN113216861B (en) | 2022-07-15 |
Family
ID=77099133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110584502.3A Active CN113216861B (en) | 2021-05-27 | 2021-05-27 | PDC drill bit suitable for directional drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113216861B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8710660D0 (en) * | 1986-05-10 | 1987-06-10 | Nl Petroleum Prod | Rotary drill bits |
| CN202467667U (en) * | 2011-12-28 | 2012-10-03 | 杨岗 | Diamond composite sheet drag-type bit |
| CN203835267U (en) * | 2014-05-16 | 2014-09-17 | 河北锐石钻头制造有限公司 | Intermittently-extruding type PDC bit system |
| CN206845104U (en) * | 2017-04-10 | 2018-01-05 | 泉州君寻贸易有限公司 | A kind of polycrystalline diamond compact bit of good heat dissipation effect |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253533A (en) * | 1979-11-05 | 1981-03-03 | Smith International, Inc. | Variable wear pad for crossflow drag bit |
| AU730523B2 (en) * | 1996-10-22 | 2001-03-08 | Sandvik Mining And Construction Australia (Production/Supply) Pty Ltd | Wear sleeve |
| GB2330787B (en) * | 1997-10-31 | 2001-06-06 | Camco Internat | Methods of manufacturing rotary drill bits |
| CN104763347B (en) * | 2015-01-23 | 2017-01-04 | 中国石油天然气集团公司 | Sweat coolling PDC drill bit |
| CN205349236U (en) * | 2016-02-03 | 2016-06-29 | 中国有色桂林矿产地质研究院有限公司 | Spout type laser welding diamond bit at bottom of major -minor |
| CN207332768U (en) * | 2017-09-23 | 2018-05-08 | 四川奥格特金刚石钻头有限公司 | A kind of shockproof PDC drill bit |
| CN211448520U (en) * | 2019-07-19 | 2020-09-08 | 高卫彦 | Shock attenuation drill bit for oil drilling |
| CN110656889A (en) * | 2019-10-22 | 2020-01-07 | 李茂林 | Oil field drill bit with self-washing heat dissipation function |
-
2021
- 2021-05-27 CN CN202110584502.3A patent/CN113216861B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8710660D0 (en) * | 1986-05-10 | 1987-06-10 | Nl Petroleum Prod | Rotary drill bits |
| CN202467667U (en) * | 2011-12-28 | 2012-10-03 | 杨岗 | Diamond composite sheet drag-type bit |
| CN203835267U (en) * | 2014-05-16 | 2014-09-17 | 河北锐石钻头制造有限公司 | Intermittently-extruding type PDC bit system |
| CN206845104U (en) * | 2017-04-10 | 2018-01-05 | 泉州君寻贸易有限公司 | A kind of polycrystalline diamond compact bit of good heat dissipation effect |
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| Publication number | Publication date |
|---|---|
| CN113216861A (en) | 2021-08-06 |
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