CN111395970B - Active anti-sticking PDC drill bit with rotary rock breaking device - Google Patents
Active anti-sticking PDC drill bit with rotary rock breaking device Download PDFInfo
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- CN111395970B CN111395970B CN202010363267.2A CN202010363267A CN111395970B CN 111395970 B CN111395970 B CN 111395970B CN 202010363267 A CN202010363267 A CN 202010363267A CN 111395970 B CN111395970 B CN 111395970B
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- cutter head
- rock breaking
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- 239000011435 rock Substances 0.000 title claims abstract description 63
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 19
- 229910003460 diamond Inorganic materials 0.000 abstract description 3
- 239000010432 diamond Substances 0.000 abstract description 3
- 239000004575 stone Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
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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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
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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
The invention relates to the technical field of PDC (polycrystalline Diamond compact) drill bits for stone drilling, in particular to an active anti-blocking PDC drill bit with a rotary rock breaking device, which comprises a drill bit body provided with a cutter bit, wherein a plurality of drill bit blades are arranged on the cutter bit, an outer flow channel at the side edge of the cutter bit is formed between the drill bit blades, inner flow channels which are communicated and through which fluid passes are arranged in the cutter bit body and the drill bit body, and the fluid flows into the inner flow channel from the tail end of the drill bit body, passes through the drill bit body and the interior of the cutter bit and then flows out from an outlet; the rotary rock breaking device is arranged in an outer flow channel of the cutter head and comprises an impeller, wherein the impeller is arranged in the inner flow channel of the cutter head, the impeller penetrates through the side edge of the cutter head and is arranged in a manner that the tail of the cutter head is inserted into the impeller, the head of the cutter head is exposed out of the outer flow channel, and fluid flows through the rotating piece, which is driven by the impeller, in the inner flow channel of the cutter head to rotate.
Description
Technical Field
The invention relates to the technical field of well drilling PDC drill bits, in particular to an active anti-jamming PDC drill bit with a rotary rock breaking device.
Background
During drilling, the drill bit is the primary tool for breaking rock and the borehole is formed by the drill bit breaking rock. The formation quality of a well bore is good, the time used is related to the mutual matching degree between the drill bit and the stratum besides the characteristics of the rock of the drilled stratum and the performance of the drill bit, and the reasonable type selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive drilling cost.
The PDC drill bit is a rock breaking tool widely used in the oil and gas exploration development industry at present, effectively improves a mechanical drilling tool, and shortens the drilling period.
The PDC drill bit, namely the polycrystalline diamond compact drill bit, is a compact which is circular in shape and is inlaid and welded on a cylindrical cutting tool, and the cutting tool is inlaid on a drill bit body to form the PDC drill bit. PDC bits are far less expensive than natural diamond bits, but are only suitable for soft to medium hard formations. The PDC drill bit is rapidly developed after being manufactured and used successfully in the early 70 th of the 20 th century, and can be used with lower drilling pressure and higher rotating speed, the drill bit has high footage and the unit footage cost is low.
At present, the PDC drill bit is widely applied to the fields of petroleum and geology due to the characteristics of high rock breaking efficiency, high drilling speed, more footage, high reliability and the like, and is a sharp tool for breaking rocks to form a well hole in the drilling process. While some formations are very brittle due to the presence of small fractures. In the process of horizontal drilling of the drill bit, the phenomena of rock mass falling from the well wall and well collapse often occur, the drill bit is tightly clamped, and the falling rock mass can reduce the capability of drilling fluid for moving rock debris, so that the friction between the drill bit and the well wall is increased. The clamped drill bit can be taken out of the well only through complex operation, and even the drill bit and the rotary guide device connected with the drill bit cannot be taken out under extreme conditions, so that the drilling efficiency can be reduced due to the clamping of the drill bit, and the drilling cost is increased. However, the falling of the well wall rock formations and the collapse of the well are unavoidable in the prior art and the prior art PDC bit is not sufficient to cope with the stuck condition.
Disclosure of Invention
In order to overcome the problems and disadvantages in the prior art, the present invention is directed to a novel anti-seize PDC drill bit having a rotary rock breaking device on a bit body, the rotary rock breaking device being driven by a fluid in a flow channel in the bit body and having a head end located between blades of the bit body.
The invention discloses an active anti-blocking PDC drill bit with a rotary rock breaking device, which comprises a drill bit body provided with a cutter head, wherein a plurality of drill bit blades are arranged on the cutter head, and an outer flow passage at the side edge of the cutter head is formed between the drill bit blades, and the active anti-blocking PDC drill bit is characterized in that: the cutter head and the drill bit body are internally provided with inner flow channels which are communicated and used for fluid to pass through, and the fluid flows into the inner flow channels from the tail end of the drill bit body and flows out from an outlet at the front end of the cutter head after passing through the drill bit body and the interior of the cutter head; a rotary rock breaking device is arranged in the outer flow passage of the cutter head, the rotary rock breaking device comprises an impeller of which the bottom is arranged in the inner flow passage of the cutter head, and a rotating member which is arranged by penetrating the side edge of the cutter head, the tail part of the rotating member is inserted in the impeller, and the head part of the rotating member is exposed out of the outer flow passage, the length of the rotating part extending out of the outer flow passage is less than or equal to the gauge protection thickness of the drill bit wing, the rotary rock breaking device further comprises a protection plate and a fixed block, the outer flow passage at the side edge of the cutter head is provided with a mounting hole for mounting the rotary rock breaking device, the fixed block is mounted in the mounting hole to limit the middle part of the rotating piece and the impeller at the bottom of the rotating piece in the mounting hole, the protection plate is provided with a hole for the head of the rotating part to pass through, the protection plate is arranged on the fixed block, and the upper surface of the protection plate is flush with the outer flow channel on the side edge of the tool bit; when fluid flows through the inner flow passage of the cutter head, the rotating piece is driven to rotate by the impeller.
Preferably, this internal flow of drill bit is greater than the internal diameter of internal flow in the tool bit, this internal flow of drill bit's fluid is entering because flow difference produces certain pressure differential during the internal flow in the tool bit to great impact force has during making the internal flow in the tool bit, the drive of being more convenient for rotatory broken rock device, just this internal flow of drill bit is located the drill bit body axis, internal flow in the tool bit then arranges along the outer runner direction of tool bit side from the drill bit body link, can form an effectual buffering region at the internal flow of drill bit body and tool bit hookup location department like this, avoids pressure too big, and the internal flow in the tool bit is pressed close to the outer runner surface of tool bit side, is more convenient for the installation and arranges rotatory broken rock device.
Furthermore, the inner flow passage outlet in the cutter head is positioned at the top of the cutter head and close to the edge of the outer flow passage on the side edge of the cutter head, namely the outflow direction of the fluid is close to the outer flow passage, so that the fluid is convenient to discharge.
Preferably, the bottom of the rotating part is detachably inserted into the impeller through a locking structure, and the locking structure fixes the rotating part on the central axis of the impeller, namely the rotating part is relatively fixed after being inserted into the impeller.
Then, further, the bottom surface of fixed block flushes with the interior runner internal surface of its mounted position department tool bit, and the thickness of impeller is less than the height of the interior runner of mounted position department tool bit, makes the impeller have a surplus space of activity from top to bottom in mounted position department, and fluid pressure can promote the impeller and drive the rotation piece and realize along impeller and rotation piece axial removal in the surplus scope when passing, plays an impact crushing effect.
Preferably, the impeller is a cylindrical side blade miniature impeller with a rotating part fixing socket arranged in the middle, the side blades are perpendicular to the flow direction of fluid in an inner flow channel in the cutter head, and the perpendicular direction can convert fluid force into rotary driving force to the maximum extent.
Moreover, the rotating part comprises a conical crushing body at the head part, a cylindrical shaft body in the middle and a socket with the bottom shape corresponding to the shape of the fixed socket of the impeller rotating part, the conical crushing body is used for contacting with a blocking object, and the rotation and the impact force are more easily concentrated at the tip.
Preferably, the rotating member fixing socket is a cross-shaped opening, each side of the cross-shaped opening is a wedge with a distal end dimension larger than a proximal end dimension, and correspondingly, the socket is also a wedge-shaped cross socket with a distal end dimension larger than a proximal end dimension, i.e., the rotating member fixing socket and the socket form a cross spline structure which can be detachably mounted, so that sufficient torque is provided to transfer rotating force, and the socket is convenient to mount in a plugging manner.
Furthermore, on the longitudinal section of the rotating part, an inverted T-shaped structure is formed between the plug socket and the cylindrical shaft body, and the inverted T-shaped structure is convenient for limiting the rotating part in the inner flow passage.
Preferably, the fixed block includes two left and right semi-cylindrical block bodies, and the beginning that two semi-cylindrical block body middle part positions correspond has the size to correspond rotate the fluting of middle cylindrical axis body, just two left and right semi-cylindrical block bodies of fixed block merge after the cylinder type external diameter size that constitutes be greater than the mounting hole internal diameter of the outer runner of tool bit side, promptly the fixed block with interference fit installs between the mounting hole, and interference mounting structure fastens.
Or alternatively, the protection plate and the fixing block can be welded at the mounting hole.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
according to the technical scheme, the rotating device is arranged in the PDC drill bit flow channel for crushing large rock debris, so that the risk of sticking the drill bit at the bottom of the well is greatly reduced. Fluid impacts the impeller through a micro flow channel in the bit body to enable the impeller to rotate, splines are arranged in the impeller, the impeller transmits power on the impeller to the rotating piece in a spline connection mode to enable the rotating piece to rotate, the structure of the flow channel in the PDC bit is fully utilized, fluid such as drilling fluid sprayed by the bit is used as power for driving the rotating device, the design space is saved to the greatest extent, the active crushing function with the driving force is realized, the scheme which is never provided in the prior art is that no matter the crushing unit is structurally arranged or the inner flow channel is designed to eject fluid, the technical scheme that the rotating part which is driven to actively act by the fluid is blocked and crushed is not related in the prior art, the technical scheme is limited by the factors of the size, the design structure and the like of the active driving structure, and the technical scheme that the inner flow channel fluid is used as the driving force to drive the active crushing dynamic structure to overcome the blockage of crushed stones is never provided.
Meanwhile, the rotating device arranged in the inner flow channel separates the flow channel of the drill bit, so that a relatively independent chip removal flow field is formed, and the chip removal capability of the PDC drill bit is effectively improved.
The spiral structure at the upper end of the rotating part can drill into the rock clamped in the flow channel, the position of the rock in the outer flow channel is not fixed due to the impact of fluid and the vibration of the drill bit in the drilling process of the drill bit, so that the crushing unit on the rotating part is not used for crushing the rock but used for crushing the rock in a whirling mode, and the spiral structure is integrally conical, so that the rock can be wedged towards two sides in the drilling process, and the rock is crushed.
Drawings
The foregoing and following detailed description of the invention will be apparent when read in conjunction with the following drawings, in which:
FIG. 1 is a schematic view of an installation structure of a preferred embodiment of the present invention;
FIG. 2 is a schematic perspective view of a preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a preferred embodiment of the rotary rock breaking device of the present invention;
in the drawings:
1. a cutter head; 2. a drill bit body; 3. a drill blade; 4. an outer flow passage; 5. an inner flow passage; 6. an outlet; 7. rotating the rock breaking device; 7.1, an impeller; 7.2, protecting plates; 7.3, fixing blocks; 7.4, a conical crushing body; 7.5, cylindrical shaft body; 7.6, a socket.
Detailed Description
The technical solutions for achieving the objects of the present invention are further illustrated by the following specific examples, and it should be noted that the technical solutions claimed in the present invention include, but are not limited to, the following examples.
Example 1
As a most basic embodiment of the invention, as shown in fig. 1 and 2, an active anti-blocking PDC drill bit with a rotary rock breaking device is disclosed, which comprises a drill bit body 2 provided with a cutter head 1, wherein a plurality of drill bit blades 3 are arranged on the cutter head 1, an outer flow channel 4 on the side edge of the cutter head 1 is formed between the drill bit blades 3, an inner flow channel 5 which is communicated and through which fluid passes is arranged in the cutter head 1 and the drill bit body 2, and the fluid flows into the inner flow channel 5 from the tail end of the drill bit body 2, passes through the drill bit body 2 and the cutter head 1 and then flows out from an outlet 6 at the front end of the cutter head 1; in the outer runner 4 of tool bit 1, be provided with rotatory broken rock device 7, rotatory broken rock device 7 includes that the bottom is used for setting up impeller 7.1 in the inner flow way 5 of tool bit 1 to and run through 1 side setting of tool bit and the afterbody is pegged graft in impeller 7.1, the head exposes the rotation piece of outer runner 4, the length less than or equal to that the rotation piece stretches out outer runner 4 the thickness of the guarantor diameter of drill bit wing 3.
As shown in fig. 2, the rotary rock breaking device 7 further includes a protection plate 7.2 and a fixed block 7.3, a mounting hole for mounting the rotary rock breaking device 7 is opened in the outer flow channel 4 at the side of the cutter head 1, the fixed block 7.3 is mounted in the mounting hole to limit the impeller 7.1 at the middle part and the bottom part of the rotary member in the mounting hole, the protection plate 7.2 is opened with a hole for the head part of the rotary member to pass through, the protection plate 7.2 is mounted on the fixed block 7.3, and the upper surface of the protection plate 7.2 is flush with the outer flow channel 4 at the side of the cutter head 1; when the fluid flows through the inner flow passage 5 of the tool bit 1, the rotating part is driven to rotate by the impeller 7.1. According to the technical scheme, fluid is used for impacting the impeller 7.1 through a micro flow channel in the drill bit body to enable the impeller 7.1 to rotate, splines are arranged in the impeller 7.1, the impeller 7.1 transmits power on the impeller 7.1 to the rotating piece in a spline connection mode to enable the rotating piece to rotate, the scheme is not provided in the prior art, and the technical scheme that the rotating piece which is driven to actively act by the fluid to block and crush is not involved no matter a crushing unit is structurally arranged or the inner flow channel 5 is designed to eject the fluid in the prior art.
Example 2
As a preferred embodiment of the present invention, preferably, as shown in fig. 1, the inner diameter of the inner flow channel 5 in the drill body 2 is larger than the inner diameter of the inner flow channel 5 in the cutter head 1, that is, when the fluid in the inner flow channel 5 in the drill body 2 enters the inner flow channel 5 in the cutter head 1, a certain pressure difference is generated due to the flow difference, so that a larger impact force is generated when the fluid enters the inner flow channel 5 in the cutter head 1, and it is more convenient to drive the rotary rock breaking device 7, and the inner flow channel 5 in the drill body 2 is located on the central axis of the drill body 2, and the inner flow channel 5 in the cutter head 1 is arranged along the outer flow channel 4 on the side of the cutter head 1 from the end connected with the drill body 2, so that an effective buffer area can be formed in the inner flow channel 5 at the position where the drill body 2 and the cutter head 1 are connected, and the pressure is prevented from being too large, and the surface of, it is more convenient to install and arrange the rotary rock breaking device 7.
Further, the outlet 6 of the inner flow channel 5 in the cutter head 1 is located at the top of the cutter head 1 and close to the edge of the outer flow channel 4 on the side of the cutter head 1, that is, the outflow direction of the fluid is close to the outer flow channel 4, so that the fluid is convenient to discharge.
Preferably, the bottom of the rotating element is detachably connected to the impeller 7.1 by a locking structure, and the locking structure fixes the rotating element to the central axis of the impeller 7.1, that is, the rotating element is fixed relatively to the impeller 7.1 after being connected.
Correspondingly, the bottom surface of the fixed block 7.3 is flush with the inner surface of the inner flow channel 5 of the tool bit 1 at the installation position, the thickness of the impeller 7.1 is smaller than the height of the inner flow channel 5 of the tool bit 1 at the installation position, so that the impeller 7.1 has a margin space moving up and down at the installation position, and the fluid can push the impeller 7.1 to drive the rotating piece to move axially along the impeller 7.1 and the rotating piece within the margin range by the pressure when passing through, thereby playing a role in impact crushing.
Preferably, the impeller 7.1 is a cylindrical side blade micro-impeller 7.1 provided with a rotating part fixing socket at the middle part, the side blade is perpendicular to the fluid flowing direction of the inner flow channel 5 in the cutter head 1, and the fluid force can be converted into the rotating driving force in the perpendicular direction to the greatest extent.
Moreover, the rotating part comprises a conical crushing body 7.4 at the head part, a cylindrical shaft body 7.5 in the middle and a socket 7.6 with the bottom shape corresponding to the shape of the fixed socket of the rotating part of the impeller 7.1, the conical crushing body 7.4 is used for contacting with a blocking object, and the rotating and impacting forces are more easily concentrated at the tip.
Preferably, the rotating member fixing socket is a cross-shaped opening, each side of the cross-shaped opening is a wedge with a distal end dimension larger than a proximal end dimension, and correspondingly, the socket 7.6 is also a wedge-shaped cross socket with a distal end dimension larger than a proximal end dimension, that is, the rotating member fixing socket and the socket 7.6 form a cross spline structure capable of being detachably mounted, so that sufficient torque is provided to transmit rotating force, and the socket mounting is facilitated.
Furthermore, on the longitudinal section of the rotating part, an inverted T shape is formed between the plug socket 7.6 and the cylindrical shaft body 7.5, and the inverted T shape is convenient for limiting the rotating part in the inner flow passage 5.
Preferably, fixed block 7.3 includes two left and right semi-cylindrical block bodies, and the beginning that two semi-cylindrical block body middle part positions correspond has the size to correspond rotate the fluting of middle cylindrical axis body 7.5, just the cylinder type external diameter size that constitutes after two left and right semi-cylindrical block bodies of fixed block 7.3 merge is greater than the mounting hole internal diameter of the outer runner 4 of 1 side of tool bit, promptly fixed block 7.3 with interference fit installs between the mounting hole, and interference mounting structure fastens.
The spiral structure at the upper end of the rotating part can drill into the rock clamped in the flow channel, the position of the rock in the outer flow channel 4 is not fixed due to the impact of fluid and the vibration of the drill bit in the drilling process of the drill bit, so that the crushing unit on the rotating part is not used for crushing the rock but used for crushing the rock in a whirling mode, and the spiral structure is integrally conical, so that wedge force towards two sides can be generated on the rock in the drilling process, and the rock is crushed.
The portion of the rotor used to break up the rock also requires the use of high strength alloys to resist rock impact and fluid erosion.
Claims (10)
1. The utility model provides an initiative anti-sticking PDC drill bit with rotatory broken rock device, is provided with a plurality of drill bit wing (3) including drill bit body (2) that are provided with tool bit (1) on tool bit (1), constitutes outer runner (4) of tool bit (1) side between drill bit wing (3), its characterized in that: an inner flow passage (5) which is communicated with each other and is used for fluid to pass through is arranged in the cutter head (1) and the drill bit body (2), and the fluid flows into the inner flow passage (5) from the tail end of the drill bit body (2) and flows out from an outlet (6) at the front end of the cutter head (1) after passing through the drill bit body (2) and the cutter head (1); the rotary rock breaking device is characterized in that a rotary rock breaking device (7) is arranged in an outer flow channel (4) of the cutter head (1), the rotary rock breaking device (7) comprises an impeller (7.1) with the bottom arranged in an inner flow channel (5) of the cutter head (1) and a rotating piece which runs through the side edge of the cutter head (1) and has the tail inserted in the impeller (7.1) and the head exposed out of the outer flow channel (4), the length of the rotating piece extending out of the outer flow channel (4) is less than or equal to the thickness of the gauge of the drill wing (3), the rotary rock breaking device (7) further comprises a protective plate (7.2) and a fixed block (7.3), the outer flow channel (4) on the side edge of the cutter head (1) is provided with a mounting hole for mounting the rotary rock breaking device (7), the fixed block (7.3) is mounted in the mounting hole, and the middle of the rotating piece and the impeller (7.1) at the bottom of the, the protection plate (7.2) is provided with a hole for the head of the rotating part to pass through, the protection plate (7.2) is arranged on the fixed block (7.3), and the upper surface of the protection plate (7.2) is flush with the surface of the outer flow channel (4) on the side edge of the tool bit (1); when fluid flows through the inner flow channel (5) of the cutter head (1), the rotating piece is driven to rotate through the impeller (7.1).
2. The active anti-seize PDC drill bit with a rotary rock breaking device of claim 1, wherein: the inner diameter of the inner flow channel (5) in the drill bit body (2) is larger than that of the inner flow channel (5) in the cutter head (1), the inner flow channel (5) in the drill bit body (2) is located on the central axis of the drill bit body (2), and the inner flow channel (5) in the cutter head (1) is arranged along the direction of the outer flow channel (4) on the side edge of the cutter head (1) from the connecting end of the inner flow channel and the drill bit body (2).
3. The active anti-seize PDC drill bit with a rotary rock breaking device according to claim 1 or 2, wherein: the inner runner (5) outlet (6) in the tool bit (1) is positioned at the top of the tool bit (1) and close to the edge of the outer runner (4) on the side edge of the tool bit (1).
4. The active anti-seize PDC drill bit with a rotary rock breaking device of claim 1, wherein: the bottom of the rotating piece is detachably connected to the impeller (7.1) in an inserting mode through a locking structure, and the rotating piece is fixed to the central axis of the impeller (7.1) through the locking structure.
5. The active anti-seize PDC drill bit with a rotary rock breaking device according to claim 1 or 4, wherein: the bottom surface of the fixed block (7.3) is flush with the inner surface of the inner flow channel (5) of the tool bit (1) at the installation position, and the thickness of the impeller (7.1) is smaller than the height of the inner flow channel (5) of the tool bit (1) at the installation position.
6. The active anti-seize PDC drill bit with a rotary rock breaking device of claim 1, wherein: the impeller (7.1) is a cylindrical side blade miniature impeller (7.1) with a rotating part fixing insertion port arranged in the middle, and the side blade is perpendicular to the fluid flowing direction of an inner flow channel (5) in the cutter head (1).
7. The active anti-seize PDC drill bit with a rotary rock breaking device of claim 1, wherein: the rotating piece comprises a conical crushing body (7.4) at the head part, a cylindrical shaft body (7.5) in the middle and a socket (7.6) with the bottom shape corresponding to the shape of the fixed socket of the rotating piece of the impeller (7.1).
8. The active anti-seize PDC drill bit with a rotary rock breaking apparatus of claim 7, wherein: the rotary part fixing inserting port is a cross-shaped opening, each edge of the cross-shaped opening is a wedge with the size of the far end larger than that of the near end, correspondingly, the inserting seat (7.6) is also a wedge-shaped cross seat with the size of the far end larger than that of the near end, namely, the rotary part fixing inserting port and the inserting seat (7.6) form a cross spline structure which can be detachably installed.
9. The active anti-seize PDC drill bit with a rotary rock breaking apparatus of claim 7, wherein: on the longitudinal section of the rotating part, an inverted T shape is formed between the plug socket (7.6) and the cylindrical shaft body (7.5).
10. The active anti-seize PDC drill bit with a rotary rock breaking apparatus of claim 7, wherein: fixed block (7.3) include two left and right semi-cylindrical block bodies, and the beginning that two semi-cylindrical block body middle part positions correspond has the size to correspond rotate the fluting of middle cylindrical axis body (7.5), just the cylinder type external diameter that constitutes after two left and right semi-cylindrical block bodies of fixed block (7.3) merge is greater than the mounting hole internal diameter of the outer runner (4) of tool bit (1) side, promptly fixed block (7.3) with interference fit installs between the mounting hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363267.2A CN111395970B (en) | 2020-04-30 | 2020-04-30 | Active anti-sticking PDC drill bit with rotary rock breaking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363267.2A CN111395970B (en) | 2020-04-30 | 2020-04-30 | Active anti-sticking PDC drill bit with rotary rock breaking device |
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| Publication Number | Publication Date |
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| CN111395970A CN111395970A (en) | 2020-07-10 |
| CN111395970B true CN111395970B (en) | 2021-05-18 |
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| CN113338808A (en) * | 2021-07-13 | 2021-09-03 | 中国石油大学(北京) | Main power rotary cutting wheel drill bit |
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| CN203729882U (en) * | 2014-01-07 | 2014-07-23 | 成都百施特金刚石钻头有限公司 | Cutting tooth self-rotating type drill bit |
| CN107762417A (en) * | 2017-09-24 | 2018-03-06 | 陈江 | Shockproof loss prevention PDC drill bit with drilling equipment defencive function |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN108756733A (en) * | 2018-03-29 | 2018-11-06 | 西南石油大学 | A kind of pulsatile impact broken rock drill bit |
| CN109915024A (en) * | 2019-04-08 | 2019-06-21 | 无锡锡钻地质装备有限公司 | A kind of prospecting bore bit and its manufacturing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140138091A1 (en) * | 2012-11-20 | 2014-05-22 | Baker Hughes Incorporated | Downhole Cutting Arrangement and Method |
| US20190063162A1 (en) * | 2017-08-30 | 2019-02-28 | Baker Hughes, A Ge Company, Llc | Cutting element assemblies comprising rotatable cutting elements, downhole tools comprising such cutting element assemblies, and related methods |
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| CN2187221Y (en) * | 1993-03-31 | 1995-01-11 | 胜利石油管理局钻井工艺研究院 | Swirl-nozzle |
| CN203729882U (en) * | 2014-01-07 | 2014-07-23 | 成都百施特金刚石钻头有限公司 | Cutting tooth self-rotating type drill bit |
| CN107762417A (en) * | 2017-09-24 | 2018-03-06 | 陈江 | Shockproof loss prevention PDC drill bit with drilling equipment defencive function |
| CN108756733A (en) * | 2018-03-29 | 2018-11-06 | 西南石油大学 | A kind of pulsatile impact broken rock drill bit |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN109915024A (en) * | 2019-04-08 | 2019-06-21 | 无锡锡钻地质装备有限公司 | A kind of prospecting bore bit and its manufacturing process |
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| CN111395970A (en) | 2020-07-10 |
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