CN108612480B - Vortex pulse impact drill bit - Google Patents
Vortex pulse impact drill bit Download PDFInfo
- Publication number
- CN108612480B CN108612480B CN201810692727.9A CN201810692727A CN108612480B CN 108612480 B CN108612480 B CN 108612480B CN 201810692727 A CN201810692727 A CN 201810692727A CN 108612480 B CN108612480 B CN 108612480B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pdc
- upper joint
- bit body
- inner core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005553 drilling Methods 0.000 claims abstract description 44
- 238000009826 distribution Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 229910003460 diamond Inorganic materials 0.000 claims description 38
- 239000010432 diamond Substances 0.000 claims description 38
- 239000002131 composite material Substances 0.000 claims description 25
- 230000010355 oscillation Effects 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 9
- 238000009527 percussion Methods 0.000 claims description 7
- 230000000737 periodic effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 21
- 238000003825 pressing Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 11
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- E21B10/36—Percussion drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
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 discloses an eddy current pulse impact drill bit, which comprises a PDC drill bit body and an upper joint, wherein the PDC drill bit body is connected with the upper joint, the PDC drill bit body is communicated with the inside of the upper joint, a flow passage distribution baffle integrally formed with the PDC drill bit body is arranged in an inner cavity of the PDC drill bit body, an eddy current pulse inner core is arranged in the inner cavity of the upper joint, and one end of the eddy current pulse inner core is embedded in the flow passage distribution baffle. The vortex pulse impact drill bit with impact function can pre-impact rock, greatly reduce the strength of rock, release the stress of surrounding rock, greatly reduce the transverse force applied to the PDC drill bit in the secondary drilling process and the stick-slip vibration of a drill rod due to the stress release of the rock, greatly prolong the service lives of the drill bit and a drilling tool, reduce the drilling time and the cost, and greatly relieve the dragging and pressing phenomenon in sliding construction, thereby improving the stability and the drilling speed of drilling.
Description
Technical Field
The invention belongs to the technical field of mechanical drilling tools for oil and gas resource exploitation, and particularly relates to an eddy current pulse percussion drill bit.
Background
With the increase of the oil and gas resource exploration and development efforts at home and abroad, the oil and gas resource exploitation work is gradually developed to deep wells, ultra-deep wells and complex difficult-to-drill stratum, and the drill bit is a tool for directly acting on rocks in oil and gas drilling exploitation, however, the traditional PDC drill bit has low rock breaking efficiency, low rotating speed and sliding dragging pressure in the drilling process, and cannot meet the current drilling process requirements of speed increasing and efficiency, so that the length of the service life of the drill bit, the adaptability of the drill bit to rocks and the important functions of improving the drilling speed and reducing the drilling cost are realized.
The most used PDC drill bit in the current petroleum drilling, the phenomenon such as unstable tool face, sliding dragging pressure and the like frequently occurs in the conventional PDC drill bit in the composite and sliding construction, and how to reduce the low-efficiency construction of the PDC drill bit in the sliding process and enhance the rock breaking efficiency in the drilling process is a problem which needs to be solved urgently.
The hydraulic oscillation tool is a new technology which is rapidly developed in recent years, the hydraulic oscillation tool is generally installed in a drilling tool to slow down the drag pressure of the drill bit, but the installation position is generally at a position about 80 meters away from the drill bit, and the drag pressure of the drill bit can not be slowed down, so that the development of the drill bit for effectively solving the drag pressure of the drill bit has a market prospect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an eddy current pulse impact drill bit, which overcomes the defects of 1: the rock breaking efficiency is low, the rotating speed is slow, and 2: the tool face is unstable, and the phenomenon of sliding and dragging of the drill bit is easy to occur, and 3: poor stability of drilling, etc.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides an vortex pulse impact drill bit, includes PDC bit body and top connection, and wherein PDC bit body connects the top connection and PDC bit body and the inside intercommunication of top connection, PDC bit body inner chamber is provided with rather than integrated into one piece's runner distribution baffle, the top connection inner chamber is provided with vortex pulse inner core, and wherein vortex pulse inner core one end is embedded in the runner distribution baffle.
Preferably, the PDC bit body is further provided with PDC bit blades, junk slots, bit nozzle water holes and impact-resistant diamond composite sheets, wherein a plurality of PDC bit blades are arranged on the crown surface of the PDC bit body, a plurality of impact-resistant diamond composite sheets are arranged on the PDC bit blades, bit nozzle water holes are arranged at the clearance between every two adjacent PDC bit blades, and the bit nozzle water holes are communicated with the inside of the runner distribution baffle.
Preferably, the impact-resistant diamond composite sheet is arranged at the edge of one side, far away from the PDC bit body, of the PDC bit blade, wherein the plane of the impact-resistant diamond composite sheet is vertical to the horizontal plane.
Preferably, the PDC bit blade includes a main blade and an auxiliary blade, wherein the number of the main blade is two, the number of the auxiliary blade is four, one side end of the two main blades is connected with the crown of the PDC bit body and is arranged in a U-shaped manner, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body on two sides of the crown of the PDC bit body divided by the two main blades.
Preferably, a chip removing groove is arranged between the main blade wing/the auxiliary blade wing and the auxiliary blade wing, wherein drill nozzle water holes are arranged on the chip removing groove, and the number of the chip removing groove and the number of the drill nozzle water holes are six.
Preferably, the upper joint comprises an upper joint shell, an upper joint threaded female buckle, an upper joint pressing cap and connecting threads, wherein the upper joint shell is internally communicated, one end of the upper joint shell is provided with the upper joint threaded female buckle, the other end of the upper joint shell is provided with the connecting threads, one side of an inner cavity of the upper joint shell is provided with an eddy current pulse inner core, the upper joint shell is provided with the upper joint pressing cap close to the end part of the eddy current pulse inner core, one end of the PDC bit body is provided with PDC bit body threaded screw threads, and the PDC bit body threaded screw threads are in threaded connection with the upper joint threaded female buckle.
Preferably, a drill bit water hole is arranged at one end of the upper joint shell close to the connecting thread.
Preferably, the center of the vortex pulse inner core is provided with an vortex pulse oscillation inner core flow channel, wherein the vortex pulse oscillation inner core flow channel is in an 8 shape.
Compared with the prior art, the invention has the advantages that:
(1) The vortex pulse impact drill bit with impact function can pre-impact the rock, greatly reduce the strength of the rock, release the stress of surrounding rock, greatly reduce the transverse force applied to the PDC drill bit in the secondary drilling process and the stick-slip vibration of a drill rod due to the stress release of the rock, greatly improve the service life of the drill bit and a drilling tool, reduce the drilling time and cost, greatly relieve the dragging and pressing phenomenon in sliding construction, and greatly improve the transverse force of the PDC drill bit and the stick-slip vibration of the drill rod, thereby improving the stability and drilling speed of drilling, prolonging the service life of the drill bit and the drilling tool, and realizing the development requirement of the drilling process for accelerating and enhancing the efficiency;
(2) The vortex pulse inner core can improve the axial radial periodic oscillation effect of the drill bit and the construction efficiency in the sliding construction of the drill bit, thereby improving the stability and the drilling speed of drilling;
(3) The invention has the advantages of smooth structure, simple manufacturing process, high rock breaking efficiency and high rotating speed, and can be widely applied to deep wells, ultra-deep wells and complex difficult-to-drill stratum drilling operation processes.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Fig. 2, a schematic of the semi-sectional structure of the present invention.
Reference numerals illustrate:
The drilling tool comprises a connecting thread, a 2-impact-resistant diamond compact, a 3-upper joint shell, a 4-vortex pulse oscillation inner core runner, a 5-runner distribution baffle, a 6-drill nozzle water hole, a 7-vortex pulse inner core, an 8-PDC drill bit body, a 9-junk slot, a 10-PDC drill bit body thread, a 11-upper joint thread box, a 12-upper joint pressing cap, a 13-PDC drill bit blade and a 14-drill bit water hole.
Detailed Description
The following describes specific embodiments of the invention with reference to the drawings and examples:
It should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present invention, and are not intended to limit the applicable limitations of the present invention, but any modification, variation in proportions, or adjustment of the size of the structures, proportions, etc. should be construed as falling within the scope of the disclosure without affecting the efficacy or achievement of the present invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Example 1
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
Example 2
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
Example 3
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
Example 4
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
As shown in fig. 1-2, preferably, the PDC bit blades 13 include main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of the two main blades is connected and is in U-shaped arrangement on the crown of the PDC bit body 8, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body 8 on two sides of the crown of the PDC bit body divided by the two main blades.
Example 5
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
As shown in fig. 1-2, preferably, the PDC bit blades 13 include main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of the two main blades is connected and is in U-shaped arrangement on the crown of the PDC bit body 8, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body 8 on two sides of the crown of the PDC bit body divided by the two main blades.
As shown in fig. 1-2, preferably, a chip groove 9 is provided between the main blade/auxiliary blade and the auxiliary blade, wherein the chip groove 9 is provided with a drill nozzle water hole 6, and the number of the chip groove 9 and the number of the drill nozzle water holes 6 are six.
Example 6
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
As shown in fig. 1-2, preferably, the PDC bit blades 13 include main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of the two main blades is connected and is in U-shaped arrangement on the crown of the PDC bit body 8, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body 8 on two sides of the crown of the PDC bit body divided by the two main blades.
As shown in fig. 1-2, preferably, a chip groove 9 is provided between the main blade/auxiliary blade and the auxiliary blade, wherein the chip groove 9 is provided with a drill nozzle water hole 6, and the number of the chip groove 9 and the number of the drill nozzle water holes 6 are six.
As shown in fig. 1-2, preferably, the upper joint comprises an upper joint housing 3, an upper joint threaded female buckle 11, an upper joint pressing cap 12 and a connecting thread 1, wherein the upper joint housing 3 is internally communicated, one end of the upper joint housing 3 is provided with the upper joint threaded female buckle 11, the other end of the upper joint housing is provided with the connecting thread 1, one side of an inner cavity of the upper joint housing 3 is provided with a vortex pulse inner core 7, one end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, and the end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, wherein the PDC bit body threaded screw thread 10 is in threaded connection with the upper joint threaded female buckle 11. The connecting thread 1 is connected with a pipe column.
Example 7
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
As shown in fig. 1-2, preferably, the PDC bit blades 13 include main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of the two main blades is connected and is in U-shaped arrangement on the crown of the PDC bit body 8, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body 8 on two sides of the crown of the PDC bit body divided by the two main blades.
As shown in fig. 1-2, preferably, a chip groove 9 is provided between the main blade/auxiliary blade and the auxiliary blade, wherein the chip groove 9 is provided with a drill nozzle water hole 6, and the number of the chip groove 9 and the number of the drill nozzle water holes 6 are six.
As shown in fig. 1-2, preferably, the upper joint comprises an upper joint housing 3, an upper joint threaded female buckle 11, an upper joint pressing cap 12 and a connecting thread 1, wherein the upper joint housing 3 is internally communicated, one end of the upper joint housing 3 is provided with the upper joint threaded female buckle 11, the other end of the upper joint housing is provided with the connecting thread 1, one side of an inner cavity of the upper joint housing 3 is provided with a vortex pulse inner core 7, one end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, and the end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, wherein the PDC bit body threaded screw thread 10 is in threaded connection with the upper joint threaded female buckle 11.
As shown in fig. 1-2, preferably, a drill bit water hole 14 is disposed at one end of the upper joint housing 3 near the connecting thread 1.
Example 8
As shown in fig. 1-2, the invention discloses a PDC drill bit body 8 and an upper joint, wherein the PDC drill bit body 8 is connected with the upper joint and is internally communicated with the upper joint, a flow passage distribution baffle 5 integrally formed with the PDC drill bit body 8 is arranged in an inner cavity of the PDC drill bit body 8, a vortex pulse inner core 7 is arranged in the inner cavity of the upper joint, and one end of the vortex pulse inner core 7 is embedded in the flow passage distribution baffle 5.
As shown in fig. 1-2, preferably, the PDC bit body 8 is further provided with a PDC bit blade 13, a chip groove 9, a bit nozzle water hole 6 and an impact resistant diamond composite sheet 2, wherein a plurality of PDC bit blades 13 are arranged on the crown surface of the PDC bit body 8, a plurality of impact resistant diamond composite sheets 2 are arranged on the plurality of PDC bit blades 13, the bit nozzle water hole 6 is arranged at the gap between two adjacent PDC bit blades 13, and the bit nozzle water hole 6 is communicated with the inside of the runner distribution baffle 5.
As shown in fig. 1-2, preferably, the impact resistant diamond compact 2 is disposed at the edge of one side of the PDC bit blade 13 away from the PDC bit body 8, where the plane of the impact resistant diamond compact 2 is perpendicular to the horizontal plane.
Preferably, the impact resistant diamond compact 2 can adjust the position, the number and the tooth shape of teeth according to different drilling conditions, and can select drill bits with different sizes according to different drilling requirements.
As shown in fig. 1-2, preferably, the PDC bit blades 13 include main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of the two main blades is connected and is in U-shaped arrangement on the crown of the PDC bit body 8, and the auxiliary blades are respectively arranged on the crowns of the PDC bit body 8 on two sides of the crown of the PDC bit body divided by the two main blades.
As shown in fig. 1-2, preferably, a chip groove 9 is provided between the main blade/auxiliary blade and the auxiliary blade, wherein the chip groove 9 is provided with a drill nozzle water hole 6, and the number of the chip groove 9 and the number of the drill nozzle water holes 6 are six.
As shown in fig. 1-2, preferably, the upper joint comprises an upper joint housing 3, an upper joint threaded female buckle 11, an upper joint pressing cap 12 and a connecting thread 1, wherein the upper joint housing 3 is internally communicated, one end of the upper joint housing 3 is provided with the upper joint threaded female buckle 11, the other end of the upper joint housing is provided with the connecting thread 1, one side of an inner cavity of the upper joint housing 3 is provided with a vortex pulse inner core 7, one end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, and the end, close to the vortex pulse inner core 7, of the upper joint housing 3 is provided with the upper joint pressing cap 12, wherein the PDC bit body threaded screw thread 10 is in threaded connection with the upper joint threaded female buckle 11. The upper joint press cap 12 is used for limiting the vortex pulse inner core 7.
As shown in fig. 1-2, preferably, a drill bit water hole 14 is disposed at one end of the upper joint housing 3 near the connecting thread 1.
As shown in fig. 1-2, preferably, an eddy current pulse oscillation core flow channel 4 is arranged at the center of the eddy current pulse core 7, and the eddy current pulse oscillation core flow channel 4 is in an 8 shape.
Preferably, the vortex pulse inner core 7 can rearrange the vortex pulse oscillation inner core runner 4 according to the use effect, and axial and radial periodic vibration is generated through the vortex pulse inner core 7, so that the transverse force applied to the drill bit and the stick-slip vibration of the drill string are reduced, and the service lives of the drill bit and the drilling tool are prolonged.
The size and the position of the vortex pulse inner core 7 are changed through design, and the vibration and impact effects of the drill bit can be adjusted to meet different types of rock breaking stratum conditions.
The working principle of the invention is as follows:
In the actual drilling process, drilling fluid enters the vortex pulse inner core 7 through the drill bit water hole 14, flows through the vortex pulse oscillation inner core runner 4 of the vortex pulse inner core 7, then generates pulses through the adherence effect to enable the drill bit to generate axial and radial periodic vibration, and realizes the axial and radial vibration of the drill bit through the periodic vibration, so that the dragging pressure of the drill bit and an upper drilling tool is reduced, a certain impact effect is provided for the PDC drill bit, and the effect of rapidly crushing rock is achieved.
The drilling fluid flowing through the vortex pulse oscillation inner core runner 4 flows into the drill bit nozzle water hole 6 through the runner distribution baffle plate, so that the impact-resistant diamond composite sheet 2 can be flushed, and the construction efficiency in the sliding construction of the drill bit is improved.
The vortex pulse impact drill bit with impact function can pre-impact the rock, greatly reduce the strength of the rock, release the stress of surrounding rock, greatly reduce the transverse force applied to the PDC drill bit in the secondary drilling process and the stick-slip vibration of a drill rod due to the stress release of the rock, greatly improve the service life of the drill bit and a drilling tool, reduce the drilling time and cost, greatly relieve the dragging and pressing phenomenon in sliding construction, and greatly improve the transverse force of the PDC drill bit and the stick-slip vibration of the drill rod, thereby improving the stability and drilling speed of drilling, prolonging the service life of the drill bit and the drilling tool, and realizing the development requirement of the drilling process for accelerating and enhancing the efficiency; the vortex pulse inner core can improve the axial radial periodic oscillation effect of the drill bit and improve the construction efficiency in the sliding construction of the drill bit; the invention has the advantages of smooth structure, simple manufacturing process, high rock breaking efficiency and high rotating speed, and can be widely applied to deep wells, ultra-deep wells and complex difficult-to-drill stratum drilling operation processes.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (6)
1. An eddy current pulse percussion drill bit, characterized by: the PDC drill bit comprises a PDC drill bit body and an upper joint, wherein the PDC drill bit body is connected with the upper joint and is communicated with the inside of the upper joint, a runner distribution baffle integrally formed with the PDC drill bit body is arranged in an inner cavity of the PDC drill bit body, an eddy current pulse inner core is arranged in the inner cavity of the upper joint, and one end of the eddy current pulse inner core is embedded in the runner distribution baffle;
the center of the vortex pulse inner core is provided with an vortex pulse oscillation inner core flow channel, wherein the vortex pulse oscillation inner core flow channel is 8-shaped;
The PDC drill bit body is further provided with PDC drill bit blades, chip grooves, drill bit nozzle water holes and impact-resistant diamond composite sheets, wherein a plurality of PDC drill bit blades are arranged on the crown surface of the PDC drill bit body, a plurality of impact-resistant diamond composite sheets are arranged on the PDC drill bit blades, drill bit nozzle water holes are arranged at the gaps of two adjacent PDC drill bit blades, and the drill bit nozzle water holes are communicated with the inside of the runner distribution baffle;
Drilling fluid enters the vortex pulse inner core through the drill bit water hole, flows through the vortex pulse oscillation inner core flow channel of the vortex pulse inner core, then generates pulses through the adherence effect to enable the drill bit to generate axial and radial periodic vibration, and the axial and radial vibration of the drill bit is realized through the periodic vibration, so that the dragging pressure of the drill bit and an upper drilling tool is reduced, and a certain impact effect is provided for the PDC drill bit;
drilling fluid flowing through the vortex pulse oscillation inner core runner flows into the water hole of the drill bit nozzle through the runner distribution baffle plate to resist flushing of the impact diamond composite sheet.
2. An eddy current pulse percussion drill bit according to claim 1, wherein: the impact-resistant diamond composite sheet is arranged at the edge of one side, far away from the PDC bit body, of the PDC bit blade, and the plane where the impact-resistant diamond composite sheet is arranged is perpendicular to the horizontal plane.
3. An eddy current pulse percussion drill bit according to claim 1, wherein: the PDC drill bit blade comprises main blades and auxiliary blades, wherein the number of the main blades is two, the number of the auxiliary blades is four, one side end of each main blade is connected with the corresponding auxiliary blade, the two main blades are arranged on the crown of the PDC drill bit body in a U-shaped mode, and the auxiliary blades are arranged on the crowns of the PDC drill bit bodies on two sides of the crown of the PDC drill bit body by the two main blades respectively.
4. A vortex pulse percussion drill bit according to claim 3, characterized in that: chip grooves are formed between the main blade wing/the auxiliary blade wing and the auxiliary blade wing, drill bit nozzle water holes are formed in the chip grooves, and the number of the chip grooves and the number of the drill bit nozzle water holes are six.
5. An eddy current pulse percussion drill bit according to claim 1, wherein: the utility model discloses a PDC drill bit, including the upper joint casing, the upper joint screw thread box, the upper joint presses cap and connecting thread, wherein the upper joint casing is inside link up, upper joint casing one end is equipped with the upper joint screw thread box, and the other end is equipped with connecting thread, upper joint casing inner chamber one side is provided with vortex pulse inner core, and wherein be close to vortex pulse inner core tip in the upper joint casing and be equipped with the upper joint and press the cap, PDC drill bit body one end is equipped with PDC drill bit body screw thread, and wherein PDC drill bit body screw thread and upper joint screw thread box threaded connection.
6. An eddy current pulse percussion drill bit according to claim 5, wherein: and a drill bit water hole is formed in one end, close to the connecting thread, of the upper joint shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692727.9A CN108612480B (en) | 2018-06-29 | 2018-06-29 | Vortex pulse impact drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692727.9A CN108612480B (en) | 2018-06-29 | 2018-06-29 | Vortex pulse impact drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108612480A CN108612480A (en) | 2018-10-02 |
| CN108612480B true CN108612480B (en) | 2024-06-18 |
Family
ID=63665969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810692727.9A Active CN108612480B (en) | 2018-06-29 | 2018-06-29 | Vortex pulse impact drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612480B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915030A (en) * | 2019-04-23 | 2019-06-21 | 西南石油大学 | The PDC drill bit of multidirectional coupled pulse oscillation |
| CN110029944B (en) * | 2019-04-23 | 2020-11-03 | 西南石油大学 | PDC drill bit for realizing impact rock breaking by pulse oscillation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203403824U (en) * | 2013-06-28 | 2014-01-22 | 中国石油集团渤海石油装备制造有限公司 | PDC bit |
| CN104832106A (en) * | 2015-03-16 | 2015-08-12 | 中国石油化工股份有限公司 | Improved pulse PDC bit for well drilling |
| CN208473711U (en) * | 2018-06-29 | 2019-02-05 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1071418A (en) * | 1963-08-19 | 1967-06-07 | P & V Mining & Engineering Ltd | Improvements in rock-drilling tools |
| US6338390B1 (en) * | 1999-01-12 | 2002-01-15 | Baker Hughes Incorporated | Method and apparatus for drilling a subterranean formation employing drill bit oscillation |
| CN101105115B (en) * | 2006-07-12 | 2010-05-12 | 中国石油大学(北京) | Waterpower pulse cavitation jet well drilling device and drill bit |
| US7571782B2 (en) * | 2007-06-22 | 2009-08-11 | Hall David R | Stiffened blade for shear-type drill bit |
| US8757291B2 (en) * | 2010-04-28 | 2014-06-24 | Baker Hughes Incorporated | At-bit evaluation of formation parameters and drilling parameters |
| CN201714306U (en) * | 2010-07-20 | 2011-01-19 | 殷文著 | High efficiency PDC drill bit matched with high speed turbine drilling tool |
| CN103277051B (en) * | 2013-06-19 | 2015-04-01 | 天津市仕杰达能源技术开发有限公司 | Self-excitation type pulse polycrystalline diamond compact (PDC) drill bit |
| CN204126557U (en) * | 2014-10-09 | 2015-01-28 | 中国石油集团渤海钻探工程有限公司 | Torsion impact device drill bit |
| CN104763349B (en) * | 2015-03-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of drilling well reinforcing pulse polycrystalline diamond compact bit |
| CN105804658B (en) * | 2016-04-27 | 2018-03-13 | 山东国岳金刚石制品有限公司 | Impact grinding formula PDC drill bit |
| CN106285492A (en) * | 2016-10-24 | 2017-01-04 | 中国石油大学(北京) | Crusher drill in tandem type pulse enhanced |
| CN106703701A (en) * | 2017-01-20 | 2017-05-24 | 中国石油大学(华东) | Pulse impact producing mechanism and center differential pressure drill comprising same |
| CN107558930A (en) * | 2017-10-19 | 2018-01-09 | 西南石油大学 | A kind of PDC impact head drill bits with pre-impact effect |
-
2018
- 2018-06-29 CN CN201810692727.9A patent/CN108612480B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203403824U (en) * | 2013-06-28 | 2014-01-22 | 中国石油集团渤海石油装备制造有限公司 | PDC bit |
| CN104832106A (en) * | 2015-03-16 | 2015-08-12 | 中国石油化工股份有限公司 | Improved pulse PDC bit for well drilling |
| CN208473711U (en) * | 2018-06-29 | 2019-02-05 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of vortex pulse shock drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108612480A (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107842317B (en) | Hard-rock boring punching composite drill bit | |
| CN103628819B (en) | A kind of nearly drill bit reverse impactor | |
| CN103628815B (en) | A kind of nearly drill bit reverses, Oscillatory Coupling impactor | |
| CN108612480B (en) | Vortex pulse impact drill bit | |
| CN203961805U (en) | A kind of drawing-in type reverse circulation sampling bit | |
| CN107100550A (en) | A kind of gradually reducing type efficient rock-breaking taper PDC drill bit | |
| CN204024646U (en) | Shunting down-hole jet stream impulse generator | |
| CN201087695Y (en) | High wind pressure downhole air hammer | |
| CN203403824U (en) | PDC bit | |
| CN208473711U (en) | A kind of vortex pulse shock drill bit | |
| CN204960850U (en) | Flat-bottom grinding shoe for drilling and grinding continuous oil pipe | |
| CN106761386A (en) | A kind of drilling well auxiliary rock instrument | |
| CN203879396U (en) | Drive chuck for down-hole hammer | |
| CN114718468A (en) | Gas lift reverse circulation PDC drill bit | |
| CN110318677B (en) | Dry-hot rock high-energy hydraulic down-the-hole hammer jet reaming device | |
| CN203452652U (en) | PDC (polycrystalline diamond compact) drilling bit | |
| CN209011759U (en) | A kind of novel diamond compact coring bit | |
| CN101353947A (en) | Full radial protection PDC bit | |
| CN201835753U (en) | Polycrystalline diamond compact for rock-breaking tool for drilling | |
| CN205422609U (en) | Special efficient grinding shoe for lateral tooth outlet | |
| CN214035546U (en) | Pressure supporting prevention device for directional well | |
| CN201705211U (en) | Novel PDC drill bit | |
| CN2916096Y (en) | Hydraulic drill-pressure presser | |
| CN204238858U (en) | A kind of mining reaming tool based on tank | |
| CN107975341B (en) | Percussion drill bit tooth, percussion drill bit and method for mounting percussion drill bit tooth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201030 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: Weiyang road 710018 Shaanxi city of Xi'an province Changqing No. 151 building room 1902 Applicant before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |