CN112502630A - Intelligent adaptive speed-up drill bit and drilling method - Google Patents
Intelligent adaptive speed-up drill bit and drilling method Download PDFInfo
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- CN112502630A CN112502630A CN202011372340.9A CN202011372340A CN112502630A CN 112502630 A CN112502630 A CN 112502630A CN 202011372340 A CN202011372340 A CN 202011372340A CN 112502630 A CN112502630 A CN 112502630A
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- drilling
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- drill bit
- transmission shaft
- force transmission
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/089—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a spring or an additional weight
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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
Abstract
The invention relates to an intelligent adaptive acceleration drill bit and a drilling method. The drill bit includes: a dominant attack tooth connected to a force transmission shaft; the comprehensive drilling drill bit and the dominant attack teeth are longitudinally arranged in a staggered manner, and the comprehensive drilling drill bit is movably connected with the force transmission shaft along the axial direction and can transmit torque along the circumferential direction; the weight-on-bit regulating component enables the comprehensive drilling bit and the force transmission shaft to form compression elastic connection along the axial direction when the force transmission shaft is applied with a pressing force; a force transfer shaft configured to exert a drilling pressure and a torsional force thereon. The invention utilizes the dominant attack tooth to crush the annular groove in advance, utilizes the comprehensive drilling bit to realize the whole borehole extension, and utilizes the internal elastic mechanism to intelligently adapt and regulate the bit pressure and the drilling speed between the dominant attack tooth and the comprehensive drilling bit, thereby improving the rock breaking efficiency and prolonging the service life of the drill bit.
Description
Technical Field
The invention relates to the technical field of drilling engineering, in particular to an intelligent speed-up drill bit and a drilling method.
Background
The intelligent drilling is a necessary trend of drilling development, however, the realization and development of the intelligent drilling must rely on high-quality and reliable drilling equipment, a drill bit is the most important drilling equipment, the performance of the drill bit is directly related to the rock breaking efficiency and the drilling speed, and how to improve the rock breaking efficiency of the drill bit and prolong the service life of the drill bit is a hotspot problem of continuous research in the field of drilling and is also a difficult problem that the realization of the intelligent drilling must overcome.
The conventional drill bit is a general drilling bit, the rock is very firm during drilling, the drill bit can meet great resistance when the drill bit starts to drill, the service life of the drill bit is limited, the application range is difficult to widen, and the requirement of intelligent drilling cannot be met.
Disclosure of Invention
The invention provides an intelligent speed-up drill bit and a drilling method, aiming at improving the drilling and rock breaking efficiency and prolonging the service life of the drill bit.
The invention first proposes an intelligent speed-up drill bit, comprising:
a dominant attack tooth connected to a force transmission shaft;
the comprehensive drilling drill bit and the dominant attack teeth are longitudinally arranged in a staggered manner, and the comprehensive drilling drill bit is movably connected with the force transmission shaft along the axial direction and can transmit torque along the circumferential direction;
the weight-on-bit regulating component enables the comprehensive drilling bit and the force transmission shaft to form compression elastic connection along the axial direction when the force transmission shaft is applied with a pressing force;
a force transfer shaft configured to exert a drilling pressure and a torsional force thereon.
According to an embodiment of the invention, the weight-on-bit regulating member is a spring structure or an elastic polymer structure; preferably, the tip of the dominant attacking tooth is tip-like, more preferably cone-like.
According to an embodiment of the invention, the force transmission shaft further comprises a weight-on-bit sub-transmission cylinder located at the lower end of the force transmission shaft, and the dominant attack tooth is arranged at the bottom end of the weight-on-bit sub-transmission cylinder.
According to an embodiment of the present invention, the weight-on-bit distribution cylinder penetrates through a bottom end of the full-face drilling bit, and a portion of the weight-on-bit distribution cylinder exposed out of the full-face drilling bit is located on a blade of the full-face drilling bit.
According to one embodiment of the present invention, the general drilling bit further comprises cutting teeth, the dominant attack teeth being spaced apart from the cutting teeth; preferably, the cutting teeth are blunt, more preferably rounded.
According to one embodiment of the invention, the dominant attack tooth comprises a set of circumferentially arranged teeth, the cutting tooth comprising a plurality of teeth in both the circumferential and radial directions; preferably, the dominant attacking tooth is located at a radial position intermediate the plurality of cutting teeth.
According to one embodiment of the present invention, the full-face drilling bit is coaxially disposed with the dowel shaft, and the full-face drilling bit is sleeved to a lower end of the dowel shaft; preferably, the comprehensive drilling bit comprises a comprehensive drilling bit torque transmission joint and a comprehensive drilling bit crown body which are connected up and down, and the comprehensive drilling bit torque transmission joint is movably connected with the torque transmission shaft along the axial direction and can be connected with the torque transmission shaft along the circumferential direction; the lower end of the overall drilling bit crown body is provided with the cutting teeth, the upper end of the overall drilling bit crown body is provided with the bit pressure regulating and controlling component between the upper end of the overall drilling bit crown body and the circumferential direction of the force transmission shaft, and the overall drilling bit torque transmission joint and the overall drilling bit crown body are fixedly connected through an integrated piece or a split piece.
According to one embodiment of the invention, the full face drilling bit is keyed or multi-directionally connected to the force transmission shaft.
According to an embodiment of the invention, the drill bit further comprises a tool joint, the tool joint being connected to the upper end of the force transmission shaft; preferably, a drilling fluid overflowing hole is formed in the drilling tool joint, a drilling fluid channel is formed in the power transmission shaft, and the drilling fluid overflowing hole is communicated with the drilling fluid channel; preferably, the force transmission shaft is provided with a bypass flow channel at the position of the overall drilling bit, the bypass flow channel is communicated with the drilling fluid channel, the overall drilling bit is provided with a drilling fluid spraying channel, and the bypass flow channel is communicated with the drilling fluid spraying channel; preferably, the comprehensive drilling drill bit further comprises an annular liquid regulating cavity, the bypass flow channel is communicated with the liquid regulating cavity, the drilling fluid spraying channel comprises a comprehensive drilling drill bit nozzle flow channel and a comprehensive drilling drill bit nozzle, and the comprehensive drilling drill bit nozzle is installed at the bottom end of the comprehensive drilling drill bit nozzle flow channel; preferably, the full face drilling bit nozzle flow path is a set of circumferentially spaced top-down passages.
The invention also provides a drilling method using the intelligent speed-up drill bit, which comprises the following steps:
s1, enabling the dominant attack tooth to contact the well bottom and break the rock under the action of the weight-on-bit torque;
s2, under the action of weight on bit, enabling the full-face drilling bit to contact the rock;
s3, the drill bit is drilled completely to break the contacted rock, and at the moment, the step S1 and the step S2 are carried out synchronously, so that the whole rock breaking and drilling process is realized;
preferably, the dominant attacking tooth breaks out of an annular trajectory.
The invention utilizes the dominant attack tooth to crush the annular groove in advance, utilizes the comprehensive drilling bit to realize the whole borehole extension, and utilizes the internal elastic mechanism to intelligently adapt and regulate the bit pressure and the drilling speed between the dominant attack tooth and the comprehensive drilling bit, thereby improving the rock breaking efficiency and prolonging the service life of the drill bit.
Drawings
FIG. 1 is a schematic view of an overall structure of an intelligent speed-up drill according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an A-A of the smart speed-up bit of FIG. 1 according to an embodiment of the present invention
FIG. 3 is a bottom view of a B-B of the smart speed booster bit of FIG. 1 in accordance with one embodiment of the present invention;
reference numerals:
I. the drilling pressure sub-transmission cylinder power transmission surface comprises a drilling pressure sub-transmission cylinder power transmission surface 1, a drilling tool joint 2, a power transmission shaft 3, a comprehensive drilling bit 4, a drilling pressure regulating and controlling component 5, a superior attack tooth 201, a sliding righting body 202, a bypass flow channel 203, a drilling pressure sub-transmission cylinder 301, a comprehensive drilling bit torque transmission joint 302, a comprehensive drilling bit crown body 303, a liquid regulating cavity 304, a comprehensive drilling bit nozzle flow channel 305, a comprehensive drilling bit nozzle 306 and a comprehensive drilling bit cutting tooth.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
The inventor finds that according to drilling practice, the rock breaking efficiency of the PDC teeth is in a linear increasing trend along with the increase of the bit pressure within a certain range of the bit pressure exceeding the threshold of the PDC cutting teeth; in addition, the whole rock breaking efficiency of the drill bit can be effectively improved by marking a groove body in the stratum in advance to release the stratum stress at the bottom of the well, and further the drilling speed is improved. The conventional drill bit is a general drilling drill bit, and the automatic distribution of the bit pressure and the stress unloading at the bottom of a well cannot be realized, so that the service life of the drill bit is limited, the application range is difficult to widen, and the requirement of intelligent drilling cannot be met. Therefore, the inventor intends to develop a drill bit, the drilling pressure can be concentrated on one or more cutting teeth, rock is crushed to form a groove body, the shaft bottom stress is unloaded, then the rock is crushed comprehensively, the drill bit can guarantee the smooth work in the comprehensive rock crushing process, and the whole drilling efficiency and the service life of the drill bit can be greatly improved.
The invention first proposes an intelligent speed-up drill bit, comprising:
a dominant attack tooth connected to a force transmission shaft;
the comprehensive drilling drill bit and the dominant attack teeth are longitudinally arranged in a staggered manner, and the comprehensive drilling drill bit is movably connected with the force transmission shaft along the axial direction and can transmit torque along the circumferential direction;
the weight-on-bit regulating component enables the comprehensive drilling bit and the force transmission shaft to form compression elastic connection along the axial direction when the force transmission shaft is applied with a pressing force;
a force transfer shaft configured to exert a drilling pressure and a torsional force thereon.
The point of the dominant attack tooth is preferably pointed, e.g., conical.
The advantage attack tooth is fixedly connected with the force transmission shaft, the rock can be firstly broken under the condition that the force transmission shaft is applied with pressure and torque, partial stress of the rock can be firstly broken, then the drill bit can be pushed to comprehensively drill to contact the rock under the further application of the pressure, the rock is further broken, on one side, the advantage attack tooth releases larger stress, on the other side, the drill bit can be comprehensively drilled, the pressure and the torque can be distributed between the advantage attack tooth and the comprehensive drill bit under the regulation of the drilling pressure regulation component, the well can be drilled more efficiently, and meanwhile, the service life of the whole drill bit is prolonged.
The bottom end of the full face drilling bit may be a blunt-edged tooth, such as a button-head tooth.
According to an embodiment of the invention, the weight-on-bit regulating member is of a spring structure or an elastic polymer structure. The elastic polymer structure may be a high elastic rubber or the like. The spring structure can be a single spring, a combination of a group of springs, or a combination of a spring and other structural members. Or the weight on bit regulating part is a combination of a spring structure and an elastic polymer structure.
Specifically, referring to fig. 1-3, the present embodiment provides an intelligent speed-up drill bit and a drilling method, wherein the drill bit comprises a tool joint 1, a force transmission shaft 2, a full-face drilling bit 3, a weight on bit regulating component 4 and a dominant attack tooth 5. The advantageous attack tooth 5, the force transmission shaft 2 and the drill tool joint 1 are fixedly connected in sequence. The dominant attack tooth 5, the force transmission shaft 2 and the drill joint 1 can be respectively of a single structure or integrated structural members in pairs or integrated structural members in triplets.
More specifically, according to an embodiment of the present invention, the dominant attack tooth 5 is mounted at the bottom end of the weight on bit dispersion transmission cylinder 203 of the force transmission shaft 2. The overall drilling bit 3 is arranged at the outer side of the bottom end of the force transmission shaft 2, and the overall drilling bit 3 and a connecting body consisting of the dominant attack tooth 5, the force transmission shaft 2 and the drilling tool joint 1 can move relatively. The bit pressure distribution transmission cylinder 203 penetrates through the bottom end of the overall drilling bit 3, the part of the bit pressure distribution transmission cylinder 203, which is exposed out of the overall drilling bit 3, is positioned on the blade of the overall drilling bit 3, the overall drilling bit at the lower end of the overall drilling bit 3 is behind (namely staggered relatively) the cutting teeth 306 of the overall drilling bit, and the dominant attack teeth 5 are arranged at the bottom end of the bit pressure distribution transmission cylinder 203; the bit pressure regulating and controlling part 4 is arranged in the middle of the force transmission shaft 2, and the bit pressure regulating and controlling part 4 is used for storing elasticity and recovering relative positions between the overall drilling bit 3 and a connecting body consisting of the dominant attack tooth 5, the force transmission shaft 2 and the drilling tool joint 1.
According to one embodiment of the invention, the upper part of the outer side of the drill tool joint 1 is a drill tool connecting buckle, and the lower part of the outer side of the drill tool joint is an upper buckle cylindrical surface; the drilling tool connecting buckle is used for connecting an upper drilling tool, and the upper buckling cylindrical surface is used for applying torque when buckling; the upper part of the inner side of the drilling tool joint 1 is a drilling fluid overflowing pore passage, and the lower part is a liquid transmission and force transmission short-circuit connecting buckle; the drilling fluid overflowing pore passage is used for overflowing the drilling fluid, and the liquid transmission force transmission short-circuit connecting buckle is used for connecting the force transmission shaft 2.
According to one embodiment of the invention, the upper part of the outer side of the force transmission shaft 2 is a full face drill bit torque transmission surface, which receives the torque transmitted by the tool joint 1 and at the same time transmits part of the torque to the full face drill bit 3. The middle part of the force transmission shaft 2 is a righting circular surface, and the part is a sliding righting body 201. The lower part of the force transmission shaft 2 is a drilling pressure sub-transmission cylinder force transmission surface I. The top end of the comprehensive drilling bit torsion transmission surface is a drilling tool joint connecting buckle for connecting a drilling tool joint 1, and the lower end of the comprehensive drilling bit torsion transmission surface is a torque transmission surface for transmitting part of underground torque to a comprehensive drilling bit 3. The torque transmitting surfaces may be of a multi-sided or keyed configuration. The centralizing circular surface can be a cylindrical surface with the diameter larger than the diameter of the circumscribed circle of the torsion transmission surface of the comprehensive drilling bit, the centralizing circular surface is used for centralizing the comprehensive drilling bit 3, and the comprehensive drilling bit 3 can move up and down along the axial direction of the force transmission shaft 2.
According to an embodiment of the present invention, the bit pressure sub-transmission cylinder force transmission surface I is a cylindrical surface with a diameter smaller than the diameter of the centering circular surface, and the cylindrical surface is used for centering the movement of the bit pressure regulating and controlling member 4 and further centering the relative position of the force transmission shaft 2 and the full-face drilling bit 3. The bottom end of the pressure-drilling sub-transmission cylinder transmission surface I is provided with a pressure-drilling sub-transmission cylinder 203. The bit pressure sub-transmission cylinders 203 are uniformly distributed on the circular cross section of the bottom end of the transmission surface I of the bit pressure sub-transmission cylinders.
According to one embodiment of the invention, the upper end of the inner side of the force transmission shaft 2 is a flow guide hole, and the lower end of the inner side of the force transmission shaft is a flow transmission hole. The flow guide hole is an inverted conical hole, the flow transmission hole is a round hole, the flow guide hole is used for smoothly guiding the drilling fluid transmitted from the drilling tool joint 1 into the flow transmission hole, and the drilling fluid is continuously transmitted by the flow transmission hole. And a bypass flow passage 202 is arranged between the bottom end of the flow transmission hole and the upper end of the drilling pressure sub-transmission column 203 on the force transmission shaft 2, and guides the drilling fluid to the drill bit 3 for drilling comprehensively.
According to one embodiment of the invention, the full face drilling bit 3 is comprised of a full face drilling bit torque coupling 301 and a full face drilling bit crown 302.
According to one embodiment of the present invention, the outside of the full face drilling bit torque coupling 301 is a cylindrical surface having a diameter equal to the diameter of the cylindrical surface of the drill collar 1. The upper end of the inner side is a comprehensive drilling bit torque transmission cylindrical surface with the shape matched with the comprehensive drilling bit torque transmission surface, and the lower end is a liquid transmission force transmission short circuit centralizing surface with the shape matched with the comprehensive drilling bit centralizing cylindrical surface. The bottom end of the all-round drilling bit torque transmission joint 301 is a torque transmission joint fixed connection surface which provides an interface for the all-round drilling bit torque transmission joint 301 and the all-round drilling bit crown body 302.
According to one embodiment of the present invention, the top end of the full face drilling bit crown body 302 may be a solid joint face and the lower end may be a bit crown. The shape of the fixed connection surface is complementary with the fixed connection surface of the torque-transmitting joint, and an interface is provided for the fixed connection of the full-face drilling bit torque-transmitting joint 301 and the full-face drilling bit crown body 302. The shape of the drill bit crown body can be changed according to the stratum characteristics and is similar to that of a common drill bit.
According to an embodiment of the present invention, the upper end of the inner side of the full drilling bit crown body 302 is a circular hole, the bottom end of the circular hole and the outer portion of the bit are provided with a through hole, the diameter of the through hole is slightly larger than the diameter of the weight-on-bit sub-transmission cylinder 203, and the weight-on-bit sub-transmission cylinder 203 penetrates out of the bit crown through the through hole. The diameter of a circular hole at the upper end of the drill bit crown body 302 for comprehensive drilling is the same as the diameter of a liquid and force transferring short circuit centralizing surface for comprehensive drilling of the drill bit torque transmission joint 301. An annular liquid adjusting cavity 303 is formed in the body at the lower part of the full-scale drilling bit crown body 302, a full-scale drilling bit nozzle flow passage 304 is formed in the lower circular surface of the liquid adjusting cavity 303 and the root of an upper blade of the bit crown of the full-scale drilling bit crown body 302, and a full-scale drilling bit nozzle 305 is installed at the bottom end of the full-scale drilling bit nozzle flow passage 304.
The drilling method adopting the intelligent speed-up drill bit comprises the following steps:
1) the dominant attack tooth 5 contacts the bottom of the well and breaks rock under the action of the bit pressure torque;
2) along with the rock breaking, breaking an annular groove at the bottom of the well;
3) the drill bit 3 is fully drilled to contact with the rocks on the inner side and the outer side of the annular groove;
4) and the drill bit 3 is drilled comprehensively to break the rocks on the inner side and the outer side of the annular groove, and at the moment, the processes 1) and 2) are carried out synchronously, so that the whole rock breaking drilling process is realized.
The method utilizes the dominant attack teeth to crush the annular groove in advance, utilizes the comprehensive drilling bit to realize the whole borehole extension, and utilizes the internal elastic mechanism to intelligently adapt and regulate the bit pressure and the drilling speed between the dominant attack teeth and the comprehensive drilling bit, thereby improving the rock breaking efficiency and prolonging the service life of the bit.
The intelligent adaptive speed-up drill bit and the drilling method have the following beneficial effects:
the bit pressure and the torque can be concentrated on the dominant attack teeth, an annular groove is cut for the bottom of the well in advance, the bottom of the well stress is released, and the rock breaking difficulty is reduced;
after the bottom hole stress is released, the energy required by the drill bit for drilling the rock comprehensively is less than that of a common drill bit, the stability of the working process is good, and the rock breaking efficiency is further improved;
the drilling pressure regulating and controlling component can restore the elastic force storage and the relative position between the comprehensive drilling bit and the dominant attack tooth component in real time, can intelligently adapt to balance and regulate the drilling pressure, and ensures the stability and the efficiency of drilling;
the drill bit has simple principle and structure, does not need to install other tools, and does not influence the implementation of other drilling procedures;
the invention has wide application range, can be used for various well types such as a vertical well, a directional well and the like, can be directly connected with a drill collar, and can also be matched with tools such as a power drilling tool, a pulse jet generating device and the like for use;
in the drilling process, the operation construction is completely the same as that of the conventional drilling, no special requirements are required for ground facilities, drilling pipe columns and drill bit types, and the method is favorable for popularization and application.
It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In addition, in the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing embodiments are merely illustrative of the present invention, and various components and devices of the embodiments may be changed or eliminated as desired, not all components shown in the drawings are necessarily required, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments described herein, and all equivalent changes and modifications based on the technical solutions of the present invention should not be excluded from the scope of the present invention.
Claims (10)
1. A smart speed bit, comprising:
a dominant attack tooth connected to a force transmission shaft;
the comprehensive drilling drill bit and the dominant attack teeth are longitudinally arranged in a staggered manner, and the comprehensive drilling drill bit is movably connected with the force transmission shaft along the axial direction and can transmit torque along the circumferential direction;
the weight-on-bit regulating component enables the comprehensive drilling bit and the force transmission shaft to form compression elastic connection along the axial direction when the force transmission shaft is applied with a pressing force;
a force transfer shaft configured to exert a drilling pressure and a torsional force thereon.
2. The smart adaptive acceleration rate drill bit of claim 1, characterized in that, the weight-on-bit regulating component is a spring structure or an elastic polymer structure; preferably, the tip of the dominant attacking tooth is tip-like, more preferably cone-like.
3. The intelligent adaptive speed-up drill bit according to claim 1 or 2, wherein the force transmission shaft further comprises a weight-on-bit force transmission cylinder, the weight-on-bit force transmission cylinder is located at the lower end of the force transmission shaft, and the dominant attack tooth is arranged at the bottom end of the weight-on-bit force transmission cylinder.
4. The smart adaptive acceleration drill bit of claim 3, characterized in that, the weight-on-bit distribution cylinder passes through the bottom end of the full face drilling drill bit, the part of the weight-on-bit distribution cylinder exposed out of the full face drilling drill bit is located on the wing of the full face drilling drill bit, preferably, the weight-on-bit distribution cylinder comprises a group of cylinders, and the group of cylinders are arranged at intervals in the circumferential direction.
5. The smart adaptive acceleration drill bit of claim 1, 2 or 4, characterized in that the full face drilling drill bit further comprises cutting teeth, the dominant attack teeth being spaced apart from the cutting teeth; preferably, the cutting teeth are blunt, more preferably rounded.
6. The smart adaptive boost drill bit of claim 5, wherein the dominant aggressor teeth comprise a set of circumferentially arranged teeth, the cutting teeth comprising a plurality of teeth in both a circumferential direction and a radial direction; preferably, the dominant attacking tooth is located at a radial position intermediate the plurality of cutting teeth.
7. The smart adaptive acceleration drill bit of claim 1 or 2 or 4 or 6, characterized in that the full face drilling drill bit is arranged coaxially with the force transmission shaft, the full face drilling drill bit being sleeved at the lower end of the force transmission shaft; preferably, the comprehensive drilling bit comprises a comprehensive drilling bit torque transmission joint and a comprehensive drilling bit crown body which are connected up and down, and the comprehensive drilling bit torque transmission joint is movably connected with the torque transmission shaft along the axial direction and can be connected with the torque transmission shaft along the circumferential direction; the lower end of the overall drilling bit crown body is provided with the cutting teeth, the upper end of the overall drilling bit crown body is provided with the bit pressure regulating and controlling component between the upper end of the overall drilling bit crown body and the circumferential direction of the force transmission shaft, and the overall drilling bit torque transmission joint and the overall drilling bit crown body are fixedly connected through an integrated piece or a split piece.
8. The smart adaptive acceleration drill bit of claim 1 or 2 or 4 or 6, characterized in that, the full face drilling drill bit is connected with the force transmission shaft through a key connection or a multi-directional structure.
9. The smart adaptive acceleration drill bit of claim 1 or 2 or 4 or 6, characterized in that, the drill bit further comprises a tool joint, the tool joint is connected with the upper end of the force transmission shaft; preferably, a drilling fluid overflowing hole is formed in the drilling tool joint, a drilling fluid channel is formed in the power transmission shaft, and the drilling fluid overflowing hole is communicated with the drilling fluid channel; preferably, the force transmission shaft is provided with a bypass flow channel at the position of the overall drilling bit, the bypass flow channel is communicated with the drilling fluid channel, the overall drilling bit is provided with a drilling fluid spraying channel, and the bypass flow channel is communicated with the drilling fluid spraying channel; preferably, the comprehensive drilling drill bit further comprises an annular liquid regulating cavity, the bypass flow channel is communicated with the liquid regulating cavity, the drilling fluid spraying channel comprises a comprehensive drilling drill bit nozzle flow channel and a comprehensive drilling drill bit nozzle, and the comprehensive drilling drill bit nozzle is installed at the bottom end of the comprehensive drilling drill bit nozzle flow channel; preferably, the full face drilling bit nozzle flow path is a set of circumferentially spaced top-down passages.
10. A method of drilling a smart speed-up drill bit according to any of claims 1 to 9, comprising the steps of:
s1, enabling the dominant attack tooth to contact the well bottom and break the rock under the action of the weight-on-bit torque;
s2, under the action of weight on bit, enabling the full-face drilling bit to contact the rock;
s3, the drill bit is drilled completely to break the contacted rock, and at the moment, the step S1 and the step S2 are carried out synchronously, so that the whole rock breaking and drilling process is realized;
preferably, the dominant attacking tooth breaks out of an annular trajectory.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011372340.9A CN112502630B (en) | 2020-11-30 | 2020-11-30 | Intelligent adaptive speed-up drill bit and drilling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372340.9A CN112502630B (en) | 2020-11-30 | 2020-11-30 | Intelligent adaptive speed-up drill bit and drilling method |
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| CN112502630B CN112502630B (en) | 2023-03-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443041A (en) * | 2015-11-17 | 2016-03-30 | 中国石油大学(华东) | Differential pressure type drill |
| CN107246240A (en) * | 2017-08-07 | 2017-10-13 | 中国石油大学(华东) | Adaptive torque balances differential pressure type drill bit |
| US20180363381A1 (en) * | 2017-01-20 | 2018-12-20 | China University Of Petroleum (East China) | Weight-on-bit self-adjusting drill bit |
| CN110905418A (en) * | 2019-12-03 | 2020-03-24 | 中国石油大学(华东) | Drill bit with energy-gathered attack unloading bottom hole stress and drilling method |
| CN111608589A (en) * | 2020-05-19 | 2020-09-01 | 中国石油化工股份有限公司石油工程技术研究院 | Bottom hole stress induction unloading drill bit and method for improving drilling speed thereof |
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2020
- 2020-11-30 CN CN202011372340.9A patent/CN112502630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443041A (en) * | 2015-11-17 | 2016-03-30 | 中国石油大学(华东) | Differential pressure type drill |
| US20180363381A1 (en) * | 2017-01-20 | 2018-12-20 | China University Of Petroleum (East China) | Weight-on-bit self-adjusting drill bit |
| CN107246240A (en) * | 2017-08-07 | 2017-10-13 | 中国石油大学(华东) | Adaptive torque balances differential pressure type drill bit |
| CN110905418A (en) * | 2019-12-03 | 2020-03-24 | 中国石油大学(华东) | Drill bit with energy-gathered attack unloading bottom hole stress and drilling method |
| CN111608589A (en) * | 2020-05-19 | 2020-09-01 | 中国石油化工股份有限公司石油工程技术研究院 | Bottom hole stress induction unloading drill bit and method for improving drilling speed thereof |
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| CN112502630B (en) | 2023-03-10 |
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