CN115182693A - Device for replacing PDC drill bit underground - Google Patents
Device for replacing PDC drill bit underground Download PDFInfo
- Publication number
- CN115182693A CN115182693A CN202210859569.8A CN202210859569A CN115182693A CN 115182693 A CN115182693 A CN 115182693A CN 202210859569 A CN202210859569 A CN 202210859569A CN 115182693 A CN115182693 A CN 115182693A
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- drill
- lifting platform
- drill bit
- blade
- blank
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000036346 tooth eruption Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 description 8
- 239000011435 rock Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Images
Classifications
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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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
- 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
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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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a device for replacing a PDC drill bit underground, which comprises a drill collar, a locking ring, a blade, a drill bit blank, a right lifting table, a drill bit pillar, a drill bit, a transmission rod and a left lifting table, wherein an auxiliary cutter is arranged at the upper part of the drill collar, two lifting tables are arranged at the lower part of the drill collar in a sliding manner along the up and down directions, the upper lifting table is hinged with the upper part of the drill bit, the lower lifting table is hinged with the lower end of the drill bit pillar, the middle part of the drill bit is hinged with the upper part of the drill bit pillar, a drill bit blade edge for cutting is arranged on the side surface of the drill bit, the drill bit blank is fixedly connected with the drill collar, and the drill bit blank is detachably connected with the blade; the outer surface of the blade blank is fixedly provided with cutting teeth, and the position of the drill blade is positioned between two blades arranged on the drill bit blank. The invention avoids the traditional process of tripping in the process of replacing the drill bit, so that the process of replacing the drill bit is simpler and safer, saves a lot of time, and effectively avoids the engineering problem possibly generated in the tripping process.
Description
Technical Field
The invention relates to the technical field of tools for petroleum and natural gas exploration equipment, in particular to a device for replacing a PDC drill bit underground.
Technical Field
PDC bits are a well drilling tool commonly used in the geological drilling industry, and during drilling operations, when the drill teeth are worn or the model of the existing bit is not matched with the geology, the bit needs to be replaced with a new one. The existing drill bit replacing mode is that all drilling tools in a well are taken out by equipment, an old drill bit is dismounted, a new drill bit is installed, and the drilling can be recovered by descending the old drill bit into the well according to the sequence of an original upright post.
At present, a plurality of devices capable of rapidly replacing drill bits are available, for example, chinese patent No. CN201610579685 discloses a PDC drill bit with detachable drill teeth, wherein the drill teeth are detachably connected to blades, and when the PDC drill bit is replaced, the old drill teeth are replaced by new drill teeth without replacing a drill bit matrix, so that the time for replacing the drill bit is reduced, and the waste of resources is reduced. However, the method needs to take all the drilling tools out first, and the time required by the tripping process cannot be saved.
Disclosure of Invention
The invention aims to design a device capable of replacing a drill bit underground, which simplifies the process of replacing the drill bit, avoids tripping in and out and saves more time.
The purpose of the invention is realized as follows: the utility model provides a change PDC drill bit device in pit, includes drill collar 1, locking ring 3, wing of a knife 5, drill bit embryo 6, its characterized in that: the underground PDC drill bit replacing device further comprises a right lifting platform 4, a drill bit support 7, a drill bit 8, a transmission rod 9 and a left lifting platform 10, wherein the upper part of the drill collar 1 is provided with an auxiliary cutter 2, the lower part of the drill collar 1 is provided with two lifting platforms in a sliding manner along the up-down direction, the upper lifting platform is hinged with the upper part of the drill bit 8, the lower lifting platform is hinged with the lower end of the drill bit support 7, the middle part of the drill bit 8 is hinged with the upper part of the drill bit support 7, a drill bit blade 81 for cutting is arranged on the side surface of the drill bit 8, the drill bit blank 6 is fixedly connected with the drill collar 1, and the drill bit blank 6 is detachably connected with the blade 5; the cutter wing 5 comprises a J-shaped cutter wing blank 52, cutting teeth 53 are fixedly arranged on the outer surface of the cutter wing blank 52, an outward extending boss 54 extending upwards is arranged at the tail end of the lower part of the cutter wing blank 52, the drill blade 8 is positioned between the two cutter wings 5 arranged on the drill head blank 6, and the diameters of the upper lifting platform and the lower lifting platform are smaller than the bore diameter of the well.
The lifting platform comprises a left lifting platform 10 and a right lifting platform 4, the left lifting platform 10 is detachably connected with the right lifting platform 4, the auxiliary cutter 2 comprises a blade 5 and a locking ring 3, the locking ring 3 is arranged in a locking block II 51 of the blade 5 in a penetrating mode, the auxiliary cutter 2 is detachably arranged on a supporting frame 12 of the drill collar 1 through the locking ring 3, a positioning block I13 is arranged in the middle of the drill collar 1 in the vertical direction, a penetrating threaded hole is formed in the positioning block I13 in the vertical direction, the threaded hole of the positioning block I13 is matched with the thread of the transmission rod 9, and the lifting platform is arranged below the positioning block I13.
The connecting platform 61 at the upper part of the drill bit blank 6 is fixedly connected with the lower end of the drill collar 1, the mounting platforms 62 at the lower part of the drill bit blank 6 are provided with mounting grooves 63 with the same number as the number of the blades 5 along the vertical direction, and the blades 5 are detachably connected with the mounting grooves 63. The lifting platform further comprises a locking ring 3, the middle of the right lifting platform 4 is a right bottom plate 41, the upper portion of the right bottom plate 41 is provided with a first locking block 43, the lower portion of the right bottom plate is provided with a second locking block 44, the left lifting platform 10 corresponds to the right lifting platform 4 in structure, the first locking block 43 is provided with a through hole, the locking ring 3 penetrates through the first locking block 43 of the left lifting platform 10 and the right lifting platform 4, the middle portions of the left lifting platform 10 and the right lifting platform 4 are provided with a guide groove 42 penetrating through in the vertical direction, the upper portion of the drill leaf 8 is hinged to the second locking block 44 of the upper lifting platform, and the lower portion of the drill leaf strut 7 is hinged to the second locking block 44 of the lower lifting platform.
The inner surface of the upper part of the blade 5 is provided with a second locking block 51, the second locking block 51 is provided with a circumferential through hole, the locking ring 3 movably penetrates through the second locking block 51, the locking ring 3 is made of plastic materials, the middle part of the locking ring 3 is provided with a locking strip 31, two ends of the locking ring are provided with outward extending strips 32, the whole shape of the locking ring 3 is circular, intervals are reserved among the outward extending strips 32, after the locking ring 3 penetrates through all blades 6 arranged on the drill bit blank 6, the intervals among the outward extending strips 32 are reduced through bolts, so that the purpose of fixing the relative positions of the blades 5 and the drill bit blank 6 is achieved, and the lower surface of the second locking block 51 is attached to the upper surface of the mounting table 62 after the blades 5 are mounted.
The middle section of the drill collar 1 is a guide rod 11 with the shape corresponding to that of the guide groove 42, a support frame 12 used for placing the auxiliary cutter 2 extends outwards from the upper part of the drill collar 1, a positioning block I13 is arranged in the middle of the drill collar 1 in the vertical direction, and a support table 14 used for supporting a lower lifting table is arranged at the lower part of the drill collar 1.
The drill blade 8 and the drill blade support 7 are rod-shaped, a drill blade edge 81 for cutting is arranged in the vertical direction of the side surface of the drill blade 8, a third positioning block 82 is arranged in the middle of the inner side surface of the drill blade 8, and the drill blade support 7 is hinged with the third positioning block 82.
The number of the blades 5 is set according to the actual situation, and is 3, 4, 5 or 6. The number of the drill leaves 8 is 5. The bottom of the drill blank 6 is provided with an upward groove. The shape of the support frame 12 is L-shaped.
Compared with the prior art, the invention has the following advantages:
1. the device for replacing the PDC drill bit in the well avoids the process of tripping in the traditional drill bit replacement, so that the process of replacing the drill bit is simpler and safer, and much time is saved.
2. According to the invention, the drill bit is not required to be replaced, so that the engineering problem possibly generated in the process of pulling out and pulling down the drill bit is effectively avoided.
3. When the drill bit is replaced, only the worn blade needs to be replaced, and the drill bit blank can be recycled, so that the material is saved, and the waste of resources is reduced.
Drawings
FIG. 1 is a schematic view of the overall PDC bit replacement downhole apparatus
FIG. 2 is a schematic view of a portion of a drill collar
FIG. 3 is a schematic view of a drill bit
FIG. 4 is a schematic view of a blade
Figure 5 is a schematic view of a locking ring
FIG. 6 is a schematic view of the front of the lift table
FIG. 7 is a schematic view of the reverse side of the lift table
FIG. 8 is a schematic view of the counter knife
Fig. 9 is a schematic reference numeral of a portion a of fig. 1: 1-drill collar, 2-auxiliary cutter, 3-locking ring, 4-right lifting platform, 5-blade, 6-drill bit blank, 7-drill bit support, 8-drill bit, 9-transmission rod, 10-left lifting platform, 11-guide rod, 12-support frame, 13-positioning block I, 14-support platform, 31-locking belt, 32-overhanging belt, 41-right bottom plate, 42-guide groove, 43-locking block I, 44-positioning block II, 51-locking block II, 52-blade blank, 53-cutting tooth, 54-overhanging lug boss, 61-connecting platform, 62-mounting platform, 63-mounting groove, 81-drill bit blade edge and 82-positioning block III.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 the up-down and left-right orientations in the drawings are taken as the up-down and left-right orientations described in the present application so as to describe the present application.
As shown in fig. 1 to 9, the device for replacing a PDC drill bit in a well comprises a drill collar 1, a locking ring 3, a right lifting platform 4, a blade 5, a drill blank 6, a drill blade support 7, a drill blade 8, a transmission rod 9 and a left lifting platform 10. As shown in FIG. 1, the upper part of the drill collar 1 is provided with an auxiliary cutter 2, the lower part of the drill collar 1 is provided with two lifting platforms in a sliding manner along the up-down direction, the upper lifting platform is hinged with the upper part of the drill blade 8, the lower lifting platform is hinged with the lower end of the drill blade strut 7, and the middle part of the drill blade 8 is hinged with the upper part of the drill blade strut 7. The lower end of the drill collar 1 is fixedly connected with a drill bit.
As shown in fig. 3 to 5, the drill includes: locking ring 3, wing of a knife 5, drill bit embryo 6. The drill bit blank 6 is characterized in that a connecting platform 61 on the upper portion of the drill bit blank 6 is fixedly connected with the lower end of the drill collar 1, mounting grooves 63 with the same number as the number of the blades 5 are formed in a mounting platform 62 on the lower portion of the drill bit blank 6 in the vertical direction, upward grooves are formed in the bottom of the drill bit blank 6, and the blades 5 are detachably connected with the mounting grooves 63. The inner surface of the upper part of the blade 5 is provided with a second locking block 51, the second locking block 51 is provided with a circumferential through hole, the locking ring 3 movably penetrates through the second locking block 51, the locking ring 3 is made of plastic materials, the middle part of the locking ring 3 is provided with a locking strip 31, two ends of the locking ring are provided with outward extending strips 32, the whole shape of the locking ring 3 is circular, intervals are reserved between the outward extending strips 32, and after the locking ring 3 penetrates through all blades 6 arranged on the drill bit blank 6, the intervals between the outward extending strips 32 are reduced through bolts, so that the purpose of fixing the relative positions of the blades 5 and the drill bit blank 6 is achieved. The lower surface of the second locking block 51 is attached to the upper surface of the mounting table 62 after the blade 5 is mounted, the blade 5 further comprises a J-shaped blade blank 52, cutting teeth 53 are fixedly arranged on the outer surface of the blade blank 52, and an extended boss 54 extending upwards is arranged at the tail end below the blade blank 52.
As shown in fig. 6 to 7, the lifting platform includes: the lifting device comprises a left lifting platform 10, a right lifting platform 4 and a locking ring 3, wherein the left lifting platform 10 and the right lifting platform 4 can be separated, the middle part of the right lifting platform 4 is a right bottom plate 41, a first locking block 43 is arranged at the upper part of the right bottom plate 41, a second positioning block 44 is arranged at the lower part of the right bottom plate 41, and the left lifting platform 10 corresponds to the right lifting platform 4 in structure. The first locking block 43 is provided with a through hole, and the locking ring 3 penetrates through the first locking block 43 of the left lifting platform 10 and the right lifting platform 4. And guide grooves 42 penetrating along the vertical direction are formed in the middle parts of the left lifting platform 10 and the right lifting platform 4. The upper part of the drill blade 8 is hinged with the second positioning block 44 of the upper lifting platform, and the lower part of the drill blade support 7 is hinged with the second positioning block 44 of the lower lifting platform.
As shown in fig. 1-2, the middle section of the drill collar 1 is a guide rod 11 having a shape corresponding to that of the guide groove 42, a support frame 12 for placing an auxiliary tool is extended from the upper part of the drill collar 1, a first positioning block 13 is arranged along the vertical direction of the drill collar 1, and a support table 14 for supporting a lower lifting table is arranged at the lower part of the drill collar 1. And the first positioning block 13 is provided with a through threaded hole along the vertical direction, and the threaded hole of the first positioning block 13 is matched with the thread of the transmission rod 9. The ascending and descending table is arranged below the first positioning block 13.
As shown in fig. 1 and 8, the counter knife includes a blade 5 and a locking ring 3, the locking ring 3 is inserted into a second locking block 51 of the blade 5, and the counter knife is arranged on a support frame 12 of the drill collar 1 through the locking ring 3. The shape of the support frame 12 is "L" shape, which is used to prevent the falling of the auxiliary knife.
As shown in fig. 1 and 9, the drill blade 8 and the drill blade support 7 are rod-shaped, the drill blade edge 81 for cutting is arranged in the vertical direction of the side surface of the drill blade 8, the positioning block III 82 is arranged in the middle of the inner side surface of the drill blade 8, and the drill blade support 7 is hinged to the positioning block 82.
In order that the drill blade 8 does not interfere with the drill when the drill bit is used for drilling, the drill blade 8 is positioned between two blades 5 arranged on a drill bit blank 6.
The diameters of the upper lifting platform and the lower lifting platform are smaller than the aperture of the well.
The number of the blades 5 is set according to the actual situation, and is usually 3, 4, 5 or 6.
When the device is used, the underground robot is placed into a well, the underground robot rotates the transmission rod 9, the transmission rod 9 pushes the upper lifting platform to move downwards, the drill bit 8 is slowly opened, surrounding rocks are cut while the drill bit 8 is opened, a cavity with the diameter larger than that of a drill bit is finally formed around the rocks along with the opening of the drill bit 8, the nut on the locking ring 3 in the upper lifting platform is screwed, the left lifting platform 10 and the right lifting platform 4 of the upper lifting platform are in a separated state, then the drill collar 1 stops rotating, and the nut on the locking ring 3 in the lower lifting platform is screwed by the underground robot, so that the left lifting platform 10 and the right lifting platform 4 of the lower lifting platform are in a separated state. Then, a downhole robot is used for unscrewing nuts on a locking ring 3 in a drill bit, so that a cutter wing 5 and a drill bit blank 6 are in a separable state, the cutter wing 5 below is taken down, the replaced cutter wing 5 is placed at a conical space formed on a rock by a drill leaf 1, a bolt of the locking ring 3 in a secondary cutter is unscrewed but is not completely unscrewed, the secondary cutter is separated from a support frame 12 and slides down to the position of the drill bit blank due to gravity, a locking block two 51 is arranged on the inner surface of the cutter wing 5, the secondary cutter stops falling after the locking block two 51 contacts a mounting table 62, the position of the secondary cutter and the diameter of the locking ring 3 are adjusted, so that each cutter wing 5 of the secondary cutter is correspondingly mounted in each mounting groove 63 of the drill bit blank 6, then the bolt of the locking ring 3 is screwed, the secondary cutter is fixed on the drill bit blank 6, and the drilling can be recovered after the robot is removed from the well.
Particularly, in order to make more use of materials, a plurality of auxiliary cutters 2 can be arranged according to requirements, after the auxiliary cutters are replaced, the left lifting platform 10 and the right lifting platform 4 of the upper lifting platform and the lower lifting platform are recombined together again, and the using steps can be repeated when the drill bit needs to be replaced next time.
The present invention is not limited to the above-mentioned alternative embodiments, and any other various products can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, all of which fall within the scope of the present invention, fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a change PDC drill bit device in pit, includes drill collar (1), locking ring (3), wing of a knife (5), drill bit embryo (6), its characterized in that: the underground PDC drill bit replacing device further comprises a right lifting platform (4), a drill blade support column (7), a drill blade (8), a transmission rod (9) and a left lifting platform (10), wherein an auxiliary cutter (2) is arranged on the upper portion of the drill collar (1), two lifting platforms are arranged on the lower portion of the drill collar in a sliding mode in the up-down direction, the upper lifting platform is hinged to the upper portion of the drill blade (8), the lower lifting platform is hinged to the lower end of the drill blade support column (7), the middle of the drill blade (8) is hinged to the upper portion of the drill blade support column (7), a drill blade edge (81) for cutting is arranged on the side face of the drill blade (8), the drill bit blank (6) is fixedly connected with the drill collar (1), and the drill bit blank (6) is detachably connected with the cutter blade (5); the cutter wing (5) comprises a J-shaped cutter wing blank (52), cutting teeth (53) are fixedly arranged on the outer surface of the cutter wing blank (52), an extended boss (54) extending upwards is arranged at the tail end below the cutter wing blank (52), the position of the drill blade (8) is positioned between two cutter wings (5) arranged on a drill bit blank (6), and the diameters of an upper lifting platform and a lower lifting platform are smaller than the aperture of a well;
the lifting platform comprises a left lifting platform (10) and a right lifting platform (4), the left lifting platform (10) and the right lifting platform (4) are detachably connected, the auxiliary cutter (2) comprises a cutter wing (5) and a locking ring (3), the locking ring (3) is arranged in a locking block II (51) of the cutter wing (5) in a penetrating mode, the auxiliary cutter (2) is detachably arranged on a supporting frame (12) of the drill collar (1) through the locking ring (3), a first positioning block (13) is arranged in the middle of the drill collar (1) along the vertical direction, a penetrating threaded hole is formed in the first positioning block (13) along the vertical direction, the threaded hole of the first positioning block (13) is matched with the thread of the transmission rod (9), and the lifting platform is arranged below the first positioning block (13).
2. The downhole PDC bit changing apparatus of claim 1 wherein: the drill bit blank is characterized in that a connecting platform (61) at the upper part of the drill bit blank (6) is fixedly connected with the lower end of the drill collar (1), mounting grooves (63) with the same number as the blades (5) are formed in a mounting platform (62) at the lower part of the drill bit blank (6) in the vertical direction, and the blades (5) are detachably connected with the mounting grooves (63).
3. The downhole PDC bit changing apparatus of claim 2, wherein: the lifting platform further comprises a locking ring (3), the middle of the right lifting platform (4) is a right bottom plate (41), the upper portion of the right bottom plate (41) is provided with a first locking block (43), the lower portion of the right lifting platform is provided with a second positioning block (44), the left lifting platform (10) corresponds to the right lifting platform (4) in structure, the first locking block (43) is provided with a through hole, the locking ring (3) penetrates through the first locking block (43) of the left lifting platform (10) and the first locking block (43) of the right lifting platform (4), the middle portions of the left lifting platform (10) and the right lifting platform (4) are provided with guide grooves (42) penetrating in the vertical direction, the upper portion of a drill bit (8) is hinged to the second positioning block (44) of the upper lifting platform, and the lower portion of a drill bit support post (7) is hinged to the second positioning block (44) of the lower lifting platform.
4. The downhole PDC bit changing apparatus of claim 3, wherein: the inner surface of the upper portion of the blade (5) is provided with a second locking block (51), the second locking block (51) is provided with a circumferential through hole, the locking ring (3) movably penetrates through the second locking block (51), the locking ring (3) is made of plastic materials, the middle of the locking ring (3) is provided with a locking belt (31), two ends of the locking ring are provided with outward extending belts (32), the whole locking ring (3) is circular, intervals are formed among the outward extending belts (32), after the locking ring (3) penetrates through all blades (6) installed on a drill bit blank (6), the intervals among the outward extending belts (32) are reduced through bolts, so that the purpose of fixing the relative positions of the blade (5) and the drill bit blank (6) is achieved, and after the blade (5) is installed, the lower surface of the second locking block (51) is attached to the upper surface of the installation table (62).
5. The downhole PDC bit changing apparatus of claim 4 wherein: the middle section of the drill collar (1) is a guide rod (11) with the shape corresponding to that of the guide groove (42), the upper part of the drill collar (1) extends outwards to form a support frame (12) for placing the auxiliary cutter (2), the middle part of the drill collar (1) is provided with a first positioning block (13) in the vertical direction, and the lower part of the drill collar (1) is provided with a support table (14) for supporting the lower lifting table.
6. The downhole PDC bit changing device according to claim 1 or 2, wherein: the drill blade (8) and the drill blade support (7) are rod-shaped, a drill blade edge (81) for cutting is arranged in the vertical direction of the side face of the drill blade (8), the third positioning block (82) is arranged in the middle of the inner side face of the drill blade (8), and the drill blade support (7) is hinged to the third positioning block (82).
7. The downhole PDC bit changing apparatus of claim 5 wherein: the number of the blades (5) is set according to the actual situation, and is 3, 4, 5 or 6.
8. The downhole PDC bit changing apparatus of claim 7 wherein: the number of the drill leaves (8) is 5.
9. The downhole PDC bit changing apparatus of claim 8, wherein: the bottom of the drill blank (6) is provided with an upward groove.
10. The downhole PDC bit exchange apparatus of claim 9, wherein: the support frame (12) is L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859569.8A CN115182693B (en) | 2022-07-21 | 2022-07-21 | PDC drill bit replacing device in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859569.8A CN115182693B (en) | 2022-07-21 | 2022-07-21 | PDC drill bit replacing device in pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115182693A true CN115182693A (en) | 2022-10-14 |
| CN115182693B CN115182693B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210859569.8A Active CN115182693B (en) | 2022-07-21 | 2022-07-21 | PDC drill bit replacing device in pit |
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| Country | Link |
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| CN (1) | CN115182693B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB709365A (en) * | 1952-01-29 | 1954-05-19 | Standard Oil Dev Co | Improvements in or relating to drill assemblies |
| US3603413A (en) * | 1969-10-03 | 1971-09-07 | Christensen Diamond Prod Co | Retractable drill bits |
| GB1453988A (en) * | 1974-07-16 | 1976-10-27 | Mcmahon H S | Apparatus for slant hole directional drilling |
| CA1049492A (en) * | 1976-04-23 | 1979-02-27 | Bernard K. Gross | Means and method of drilling wells |
| US4379494A (en) * | 1981-10-05 | 1983-04-12 | International Petroleum Engineering Corporation | Replaceable drill stabilizer sleeve |
| DE69423471D1 (en) * | 1993-06-16 | 2000-04-20 | Down Hole Tech Pty Ltd | Interchangeable cutting element segment for a drill bit |
| US20100200236A1 (en) * | 2008-08-01 | 2010-08-12 | Tesco Corporation | Method of Circulating While Retrieving Bottom Hole Assembly in Casing |
| CN203769696U (en) * | 2014-04-04 | 2014-08-13 | 四川川石金刚石钻头有限公司 | Small rock core sampling drill bit |
| AU2018205207A1 (en) * | 2017-07-13 | 2019-01-31 | Specialised Resource Products and Services Pty Ltd | Down-hole Hammer Drilling Tool with Interchangeable Drill Head |
| CN112145085A (en) * | 2020-11-23 | 2020-12-29 | 西南石油大学 | Controllable reducing drill bit |
| CN114251053A (en) * | 2021-12-14 | 2022-03-29 | 中国地质科学院勘探技术研究所 | Drill bit for casing drilling |
| CN114592797A (en) * | 2022-03-16 | 2022-06-07 | 西南石油大学 | PDC drill bit with nozzle on gauge block |
-
2022
- 2022-07-21 CN CN202210859569.8A patent/CN115182693B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB709365A (en) * | 1952-01-29 | 1954-05-19 | Standard Oil Dev Co | Improvements in or relating to drill assemblies |
| US3603413A (en) * | 1969-10-03 | 1971-09-07 | Christensen Diamond Prod Co | Retractable drill bits |
| GB1453988A (en) * | 1974-07-16 | 1976-10-27 | Mcmahon H S | Apparatus for slant hole directional drilling |
| CA1049492A (en) * | 1976-04-23 | 1979-02-27 | Bernard K. Gross | Means and method of drilling wells |
| US4379494A (en) * | 1981-10-05 | 1983-04-12 | International Petroleum Engineering Corporation | Replaceable drill stabilizer sleeve |
| DE69423471D1 (en) * | 1993-06-16 | 2000-04-20 | Down Hole Tech Pty Ltd | Interchangeable cutting element segment for a drill bit |
| US20100200236A1 (en) * | 2008-08-01 | 2010-08-12 | Tesco Corporation | Method of Circulating While Retrieving Bottom Hole Assembly in Casing |
| CN203769696U (en) * | 2014-04-04 | 2014-08-13 | 四川川石金刚石钻头有限公司 | Small rock core sampling drill bit |
| AU2018205207A1 (en) * | 2017-07-13 | 2019-01-31 | Specialised Resource Products and Services Pty Ltd | Down-hole Hammer Drilling Tool with Interchangeable Drill Head |
| CN112145085A (en) * | 2020-11-23 | 2020-12-29 | 西南石油大学 | Controllable reducing drill bit |
| CN114251053A (en) * | 2021-12-14 | 2022-03-29 | 中国地质科学院勘探技术研究所 | Drill bit for casing drilling |
| CN114592797A (en) * | 2022-03-16 | 2022-06-07 | 西南石油大学 | PDC drill bit with nozzle on gauge block |
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| CN115182693B (en) | 2023-06-16 |
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