Provided herein are PDC drill bits for engaging subterranean formations and for drilling wellbores, wherein the PDC drill bits are adapted to reduce erosion of a bit head face by the inclusion of openings in a portion of the shank of a PDC drill bit. The present disclosure also relates to systems and methods of drilling subterranean formations using the PDC drill bits disclosed herein.
Provided herein are PDC drill bits (200) for engaging subterranean formations and for drilling wellbores, wherein the PDC drill bits are adapted to reduce erosion of a bit head face by the inclusion of openings in a portion of the shank of a PDC drill bit. The present disclosure also relates to systems and methods of drilling subterranean formations using the PDC drill bits disclosed herein.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/55 - 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
3.
DRILL BITS AND OTHER DOWNHOLE DRILLING TOOLS WITH NON-CYLINDRICAL CUTTER POCKETS
Embodiments of the present invention may encompass downhole tools that may include a body comprising a face and an axis of rotation. The tools may include a plurality of blades disposed on the face of the body. Each of the plurality of blades may define a plurality of cutter pockets. At least one cutter pocket of the plurality of cutter pockets may include a non-circular cross-section. The tools may include a plurality of cutters. A portion of each cutter may be disposed within a respective cutter pocket of the plurality of cutter pockets. The portion of each cutter may have a cross-sectional shape that matches a cross-sectional shape of the respective pocket.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/43 - 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
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/627 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
4.
DRILL BITS AND OTHER DOWNHOLE DRILLING TOOLS WITH NON-CYLINDRICAL CUTTER POCKETS
Embodiments of the present invention may encompass downhole tools that may include a body comprising a face and an axis of rotation. The tools may include a plurality of blades disposed on the face of the body. Each of the plurality of blades may define a plurality of cutter pockets. At least one cutter pocket of the plurality of cutter pockets may include a non-circular cross-section. The tools may include a plurality of cutters. A portion of each cutter may be disposed within a respective cutter pocket of the plurality of cutter pockets. The portion of each cutter may have a cross-sectional shape that matches a cross-sectional shape of the respective pocket.
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/28 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
E21B 10/55 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A rotatable cutting element for a drill bit may include a rotatable body. The rotatable body may include a carbide substrate and a polycrystalline diamond table coupled with the carbide substrate. The polycrystalline diamond table may include a circumferential surface and a face that is at least substantially normal to the circumferential surface. An interface between the face and the circumferential surface may include a chamfer. The chamfer may have an angle of less than 45 degrees relative to the circumferential surface.
Oil field drilling machines and parts therefor, namely, drill bits; Cutting devices being parts of machines; Polycrystalline diamond compact (PDC) cutting tools, being machine tools; Polycrystalline diamond compact (PDC) drill bits for drilling machines
Downhole, power-operated and non-power-operated well drilling tools being parts of drilling machines, namely, torsional oscillation reducers made of rubber composition, rubber-like composition, plastic composition, or such compositions combined with metal, namely, rotors, stators, helical splines, and other such mechanisms used in transferring and generating changes to torque and rotation for protecting and improving durability to a drill bit during drilling
Downhole, power-operated and non-power-operated well drilling tools being parts of drilling machines, namely, torsional oscillation reducers made of rubber composition, rubber-like composition, plastic composition, or such compositions combined with metal, namely, rotors, stators, helical splines, and other such mechanisms used in transferring and generating changes to torque and rotation for protecting and improving durability to a drill bit during drilling
Downhole, power-operated and non-power-operated well drilling tools being parts of drilling machines, namely, torsional oscillation reducers made of rubber composition, rubber-like composition, plastic composition, or such compositions combined with metal, namely, rotors, stators, helical splines, and other such mechanisms used in transferring and generating changes to torque and rotation for protecting and improving durability to a drill bit during drilling
A drill bit including a body having a face and a plurality of blades disposed on the face of the body. Each of the plurality of blades may have a row of cutters disposed thereon, and the rows of cutters may collectively define a cutting profile of the drill bit. At least some of the cutters along the cutting profile may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters along the cutting profile may be less than 20°.
E21B 10/43 - 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
E21B 10/55 - 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
Oil field well drilling machines and parts therefor, namely, drill bits; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Oil field well drilling machines and parts therefor, namely, drill bits; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Oil field well drilling machines and parts therefor, namely, drill bits; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Oil field well drilling machines and parts therefor, namely, drill bits; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Provided herein are downhole tools with fixed cutters for engaging subterranean formations, removing rock, and drilling wellbores. More specifically, the present disclosure relates to drill bits (e.g., polycrystalline-diamond compact bits) adapted to smooth torque and to minimize vibration during operation. The drill bits of the present disclosure have alternately arranged or designed blades. In some cases, one or more blades of the drill bit of the present disclosure have a wave-shaped blade. In some cases, the drill bit of the present disclosure has multiple blades with patterns that differ from each other in shape or orientation.
E21B 10/43 - 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
Provided herein are downhole tools with fixed cutters for engaging subterranean formations, removing rock, and drilling wellbores. More specifically, the present disclosure relates to drill bits (e.g., polycrystalline-diamond compact bits) adapted to smooth torque and to minimize vibration during operation. The drill bits of the present disclosure have alternately arranged or designed blades. In some cases, one or more blades of the drill bit of the present disclosure have a wave-shaped blade. In some cases, the drill bit of the present disclosure has multiple blades with patterns that differ from each other in shape or orientation.
E21B 10/43 - 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
Downhole tools with fixed cutters for engaging subterranean formations, removing rock, and drilling wellbores may include drill bits (e.g., polycrystalline-diamond compact bits) adapted to smooth torque and to minimize vibration during operation. The drill bits may have alternately arranged or designed blades. In some cases, one or more blades of the drill bit may have a wave-shaped blade. In some cases, the drill bit may have multiple blades with patterns that differ from each other in shape or orientation.
A drill bit assembly for drilling a hole through earth, the drill bit comprising: a bit body extending between a first end and a second end along a longitudinal axis of the bit body with a connecting arrangement positioned at the first end of the bit body for coupling the bit body to a rotating shaft for providing rotational torque to the bit body; a cutting head including a leading tip portion for cutting into earth and a trailing receiving portion for receiving the second end of the bit body in an internal cavity defined by the receiving portion to allow the cutting head to be removably coupled to the second end of the bit body; a retaining arrangement to retain the second end of the bit body in the receiving portion of the cutting tip.
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same. In particular, the present disclosure describes a coupler which includes a housing including a first connecting portion at a first end for connecting to a drill pipe, a base coupled to the housing and including a second connecting portion at a second end for connecting to a drill bit, and an intermediate component disposed between the base and the housing, wherein the coupler is configured for rotation about an axis during use, with the intermediate component allowing limited relative rotation between the housing and the base about the axis.
The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same. In particular, the present disclosure describes a coupler which includes a housing including a first connecting portion at a first end for connecting to a drill pipe, a base coupled to the housing and including a second connecting portion at a second end for connecting to a drill bit, and an intermediate component disposed between the base and the housing, wherein the coupler is configured for rotation about an axis during use, with the intermediate component allowing limited relative rotation between the housing and the base about the axis.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same. In particular, the present disclosure describes a coupler which includes a housing including a first connecting portion at a first end for connecting to a drill pipe, a base coupled to the housing and including a second connecting portion at a second end for connecting to a drill bit, and an intermediate component disposed between the base and the housing, wherein the coupler is configured for rotation about an axis during use, with the intermediate component allowing limited relative rotation between the housing and the base about the axis.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Downhole tools, namely, a torque converter other than for land vehicles for providing impact to a drill bit during drilling of oil and gas wells; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Provided herein is PDC drill bits for engaging subterranean formations and for drilling wellbores, wherein the PDC drill bits are adapted to reduce erosion of the drill bit face by the inclusion of openings in a portion of the gauge of the PDC drill bit. The present disclosure also relates to systems and methods of drilling subterranean formations using the drill bits disclosed herein.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
Provided herein is PDC drill bits for engaging subterranean formations and for drilling wellbores, wherein the PDC drill bits are adapted to reduce erosion of the drill bit face by the inclusion of openings in a portion of the gauge of the PDC drill bit. The present disclosure also relates to systems and methods of drilling subterranean formations using the drill bits disclosed herein.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/43 - 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
16 - Paper, cardboard and goods made from these materials
41 - Education, entertainment, sporting and cultural services
Goods & Services
Printed books in the field of drill bits, downhole drilling tools, and oil and gas drilling and drilling machines; Printed children's books Providing online non-downloadable e-books in the field of drill bits, downhole drilling tools, and oil and gas drilling and drilling machines; Providing online non-downloadable comic books and graphic novels
Provided herein is PDC drill bits for engaging subterranean formations and for drilling wellbores, wherein the PDC drill bits are adapted to reduce erosion of the drill bit face by the inclusion of openings in a portion of the gauge of the PDC drill bit. The present disclosure also relates to systems and methods of drilling subterranean formations using the drill bits disclosed herein.
E21B 10/28 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
E21B 10/55 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
41 - Education, entertainment, sporting and cultural services
Goods & Services
Providing online non-downloadable educational media, namely, video recordings in the field of drill bits, downhole drilling tools, and oil and gas drilling and drilling machines
36.
DRILL BIT FOR BORING EARTH AND OTHER HARD MATERIALS
The present disclosure provides a cutter insert assembly, adapted for being mounted on a blade of a bit body for a drill bit. In particular, the cutter insert assemblies described herein include an insert body with a connecting arrangement positioned at the first end of the insert body for coupling the insert body to the blade and a cutter, which may detachably couple to the insert body in an internal cavity. The cutter insert assemblies also include a retaining pin for detachably interlocking the cutter and the insert body.
E21B 10/20 - Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
E21B 10/62 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
E21C 35/183 - Mining picksHolders therefor with inserts or layers of wear-resisting material
The present disclosure relates to a friction reduction tool having a housing for connecting the friction reduction tool to a drill string or coiled tubing; a force converter within the housing and having a stator, a helical rotor, and a rotational cavity passageway for conveying drilling fluid between the stator and the helical rotor; and a valve assembly; wherein the helical rotor has a bore which extends through the helical rotor and which defines an alternative passageway for the drilling fluid; and wherein the rotational cavity passageway and the alternative passageway are in fluidic communication with the valve assembly.
The present disclosure relates to a friction reduction tool having a housing for connecting the friction reduction tool to a drill string or coiled tubing; a force converter within the housing and having a stator, a helical rotor, and a rotational cavity passageway for conveying drilling fluid between the stator and the helical rotor; and a valve assembly; wherein the helical rotor has a bore which extends through the helical rotor and which defines an alternative passageway for the drilling fluid; and wherein the rotational cavity passageway and the alternative passageway are in fluidic communication with the valve assembly.
The present disclosure provides a cutter insert assembly, adapted for being mounted on a blade of a bit body for a drill bit. In particular, the cutter insert assemblies described herein include an insert body with a connecting arrangement positioned at the first end of the insert body for coupling the insert body to the blade and a cutter, which may detachably couple to the insert body in an internal cavity. The cutter insert assemblies also include a retaining pin for detachably interlocking the cutter and the insert body.
E21B 10/20 - Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
E21B 10/62 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
E21C 35/183 - Mining picksHolders therefor with inserts or layers of wear-resisting material
The present disclosure provides a cutting head adapted to removably couple to a bit body of a drill bit assembly. The cutting head includes a leading cutting tip for cutting into earth and a trailing receiving portion for receiving a second end of the bit body in an internal cavity defined by the trailing receiving portion to allow the cutting head to be removably coupled to the second end of the bit body.
E21B 10/62 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/50 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
E21B 10/52 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
E21B 10/633 - Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
A drill bit including a body having a face and a bit axis. The face includes a cone region disposed about the bit axis, a nose region disposed radially outward from the cone region, and a shoulder region disposed radially outward from the nose region. The drill bit further includes a first plurality of cutters defining a first cutting profile, and a second plurality of cutters defining a second cutting profile different from the first cutting profile. The second plurality of cutters are not back-up cutters to the first plurality of cutters.
E21B 10/43 - 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
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
A drill bit including a body having a face and a bit axis. The face includes a cone region disposed about the bit axis, a nose region disposed radially outward from the cone region, and a shoulder region disposed radially outward from the nose region. The drill bit further includes a first plurality of cutters defining a first cutting profile, and a second plurality of cutters defining a second cutting profile different from the first cutting profile. The second plurality of cutters are not back-up cutters to the first plurality of cutters.
E21B 10/43 - 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
E21B 10/55 - 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
Oil field well drilling machines and parts therefor, namely, drill bits; Down hole power drilling tools, namely, power drill string tools used to reduce friction between the drill string and the wellbore; Down hole drilling tools, namely, drilling tools being well drilling machines used to address vibration between the drill bit and drilling rig
Embodiments of the present invention provides cutting elements for use on rotary drill bits for drilling subterranean formations. More specifically, the present disclosure relates to cutting elements having a shaped upper surface including at least one spoke for cutting and/or failing subterranean formations during drilling. The present disclosure also relates to drill bits incorporating one or more of such cutting elements.
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/55 - 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
Embodiments of the present invention provides cutting elements for use on rotary drill bits for drilling subterranean formations. More specifically, the present disclosure relates to cutting elements having a shaped upper surface including at least one spoke for cutting and/or failing subterranean formations during drilling. The present disclosure also relates to drill bits incorporating one or more of such cutting elements.
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/55 - 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
A bladeless polycrystalline diamond compact (PDC) drill bit includes a head having a plurality of knots protruding from a drilling face of the head. Each of the plurality of knots includes a single cutter. Each of the cutters is arranged about a central axis of the head such that each cutter has a unique radial position and angular position relative to the central axis. The head defines at least one fluid port extending through the drilling surface.
E21B 10/43 - 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
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
A nozzle for a drill bit such as may be used to drill for oil or natural gas. The nozzle includes a generally-cylindrical body having a longitudinal axis, a proximal end for insertion into a drill bit body, and a distal end opposite the proximal end. The nozzle body defines a longitudinal bore through the nozzle along the longitudinal axis. The nozzle further includes one or more lobes extending radially from the nozzle body near the distal end. Each of the lobes is displaced axially from the distal end such that a cylindrical portion of the nozzle body is disposed between the distal end and the lobe. The nozzle further includes a fitting in the distal end configured to engage a tool for imparting rotational torque to the nozzle about the longitudinal axis. Such a nozzle is preferably insertable into a drill bit body from outside the body.
A bit breaker for coupling a drill bit to a drilling string includes a base defining a central opening and a wrench portion extending upward from the base. The wrench portion has two opposing lateral sides and an end wall that define an open interior that receives a shank of a drill bit. The open interior and the central opening are in alignment. A handle is coupled with the base and is movable between a storage position in which a top of the handle is positioned below a top surface of the wrench portion and a toting position in which the handle extends upward with the top of the handle positioned above the top surface. A gate is movably positioned between a retaining position in which the gate encloses the open interior of the wrench portion and an access position that provides lateral access to the open interior.
A bladeless polycrystalline diamond compact (PDC) drill bit includes a head having a plurality of knots protruding from a drilling face of the head. Each of the plurality of knots includes a single cutter. Each of the cutters is arranged about a central axis of the head such that each cutter has a unique radial position and angular position relative to the central axis. The head defines at least one fluid port extending through the drilling surface.
E21B 10/43 - 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
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A nozzle for a drill bit such as may be used to drill for oil or natural gas. The nozzle includes a generally-cylindrical body having a longitudinal axis, a proximal end for insertion into a drill bit body, and a distal end opposite the proximal end. The nozzle body defines a longitudinal bore through the nozzle along the longitudinal axis. The nozzle further includes one or more lobes extending radially from the nozzle body near the distal end. Each of the lobes is displaced axially from the distal end such that a cylindrical portion of the nozzle body is disposed between the distal end and the lobe. The nozzle further includes a fitting in the distal end configured to engage a tool for imparting rotational torque to the nozzle about the longitudinal axis. Such a nozzle is preferably insertable into a drill bit body from outside the body.
A drill bit including a body having a face and a plurality of blades disposed on the face of the body. Each of the plurality of blades may have a row of cutters disposed thereon, and the rows of cutters may collectively define a cutting profile of the drill bit. At least some of the cutters along the cutting profile may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters along the cutting profile may be less than 20°.
E21B 10/43 - 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
E21B 10/55 - 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
53.
DRILL BIT CUTTERS WITH ALTERNATING BACK RAKE ANGLES
A drill bit including a body having a face and a plurality of blades disposed on the face of the body. Each of the plurality of blades may have a row of cutters disposed thereon, and the rows of cutters may collectively define a cutting profile of the drill bit. At least some of the cutters along the cutting profile may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters along the cutting profile may be less than 20°.
E21B 10/43 - 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
E21B 10/55 - 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
A drill bit including a body having a face, a blade disposed on the face, and a row of cutters disposed on the blade. At least some of the cutters may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters may be less than 20°.
E21B 10/55 - 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
Earth boring tools having offset blades with a plurality of fixed cutters having side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.
E21B 10/43 - 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
E21B 10/55 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A downhole tool for cyclically generating cyclical pressure waves in drilling fluids of sufficient magnitude to vibrate a drill string or coiled tubing to reduce friction between drill string or coiled tubing and a wall of an uncased or cased wellbore. A passageway through which drilling fluid flows through the tool is constricted to increase pressure of the drilling fluid while it continues to flow through the tool. A bypass around the constriction is cyclically opened by a rotary valve to increase the flow area through the tool for the drilling fluid while at the same time an axially shifting valve, shifted by a pair of rotating cams, opens to allow drilling fluid to vent to an annulus formed by the drill string or coiled tubing and a wall of the wellbore.
A downhole tool for cyclically generating cyclical pressure waves in drilling fluids of sufficient magnitude to vibrate a drill string or coiled tubing to reduce friction between drill string or coiled tubing and a wall of an uncased or cased wellbore. A passageway through which drilling fluid flows through the tool is constricted to increase pressure of the drilling fluid while it continues to flow through the tool. A bypass around the constriction is cyclically opened by a rotary valve to increase the flow area through the tool for the drilling fluid while at the same time an axially shifting valve, shifted by a pair of rotating cams, opens to allow drilling fluid to vent to an annulus formed by the drill string or coiled tubing and a wall of the wellbore.
Earth boring tools having offset blades with a plurality of fixed cutters having side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A downhole tool for cyclically generating cyclical pressure waves in drilling fluids of sufficient magnitude to vibrate a drill string or coiled tubing to reduce friction between drill string or coiled tubing and a wall of an uncased or cased wellbore. A passageway through which drilling fluid flows through the tool is constricted to increase pressure of the drilling fluid while it continues to flow through the tool. A bypass around the constriction is cyclically opened by a rotary valve to increase the flow area through the tool for the drilling fluid while at the same time an axially shifting valve, shifted by a pair of rotating cams, opens to allow drilling fluid to vent to an annulus formed by the drill string or coiled tubing and a wall of the wellbore.
Earth boring tools having offset blades with a plurality of fixed cutters having side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/43 - 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
61.
DOWNHOLE TOOL WITH FIXED CUTTERS FOR REMOVING ROCK
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
62.
DOWNHOLE TOOL WITH FIXED CUTTERS FOR REMOVING ROCK
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
63.
Downhole tool with fixed cutters for removing rock
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/61 - Drill bits characterised by conduits or nozzles for drilling fluids characterised by nozzle structure
A PDC drill bit for use in downhole air drilling includes a body with a face for engaging a bottom of a hole being drilled and a gauge for engaging a side of the hole being drilled. The face includes a cone, a nose outward of the cone, a shoulder outward of the nose. The bit further includes channels formed in the face of the bit that extend from within the cone to the gauge. The channels define a plurality of blades that are all connected. Each of the plurality of blades has a leading edge with PDC cutters mounted thereon. One or more of the channels is defined by two side walls and a bottom wall and has a length, width and depth. The width or depth remains substantially constant from a first point located radially inward of the gauge to a second point within the shoulder or gauge.
A PDC drill bit for use in downhole air drilling includes a body with a face for engaging a bottom of a hole being drilled and a gauge for engaging a side of the hole being drilled. The face includes a cone, a nose outward of the cone, a shoulder outward of the nose. The bit further includes channels formed in the face of the bit that extend from within the cone to the gauge. The channels define a plurality of blades separated by the channels. Each of the plurality of blades has a leading edge with PDC cutters mounted thereon. One or more of the channels are defined by two side walls and a bottom wall and has a length, width and depth. The width or depth remains substantially constant from a first point on its length within the cone to a second point within the shoulder.
E21B 10/18 - Roller bits characterised by conduits or nozzles for drilling fluids
E21B 10/43 - 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
E21B 10/55 - 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
E21B 21/16 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
A PDC drill bit for use in downhole air drilling includes a body with a face for engaging a bottom of a hole being drilled and a gauge for engaging a side of the hole being drilled. The face includes a cone, a nose outward of the cone, a shoulder outward of the nose. The bit further includes channels formed in the face of the bit that extend from within the cone to the gauge. The channels define a plurality of blades that are all connected. Each of the plurality of blades has a leading edge with PDC cutters mounted thereon. One or more of the channels is defined by two side walls and a bottom wall and has a length, width and depth. The width or depth remains substantially constant from a first point located radially inward of the gauge to a second point within the shoulder or gauge.
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/43 - 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
E21B 10/48 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
68.
Diamond cutting elements for drill bits seeded with HCP crystalline material
A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.
B24D 3/10 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic for porous or cellular structure, e.g. for use with diamonds as abrasives
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
E21B 10/55 - 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
B24D 99/00 - Subject matter not provided for in other groups of this subclass
69.
Downhole tool with fixed cutters for removing rock
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/55 - 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
Industrial down hole power drilling tools for oil and gas drilling, namely, power drill string tools used to reduce friction between the drill string and the wellbore
A rotary drill bit for directional drilling operations, in which a rotating bit with cutters advances a borehole in the earth invention, provides a smaller radius of curvature to increase drilling efficiency. The rotary drill bit comprises a box connection for connecting the bit to the drill string. The drill bit receives a pin connection that seats adjacent the plenum of the bit to shorten the distance between the bit face and steering tools behind the bit so the drill string can be steered more efficiently.
A rotary drill bit for directional drilling operations, in which a rotating bit with cutters advances a borehole in the earth invention, provides a smaller radius of curvature to increase drilling efficiency. The rotary drill bit comprises a box connection for connecting the bit to the drill string. The drill bit receives a pin connection that seats adjacent the plenum of the bit to shorten the distance between the bit face and steering tools behind the bit so the drill string can be steered more efficiently.
Earth boring tools with a plurality of fixed cutters have side rake or lateral rakes configured for improving chip removal and evacuation, drilling efficiency, and/or depth of cut management as compared with conventional arrangements.
E21B 10/55 - 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
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
E21B 10/43 - 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
A rotary impact tool assembled in a drill string transfers torque and axial force between two components. The rotary impact tool includes an anvil and a hammer axially aligned with engaging faces. At a threshold torque, the hammer disengages from the anvil and rotates freely until a biasing element displaces the hammer to reengage the anvil. Kinetic energy stored in the hammer is transferred to the anvil when the faces of the hammer and anvil reengage. This provides an impact to the anvil and any attached component. The tool can accommodate misalignment of the attached components.
F16D 43/20 - Internally controlled automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
A universal joint assembled to a drill string transfers torque and axial force between two components along a longitudinal axis where the shafts of the components are not completely aligned. The universal joint includes axially spaced members joined by transversely spaced links. As the joint rotates the links move to accommodate misalignment between the drill string components and the connected members.
F16D 3/62 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts the links or their attachments being elastic
E21B 4/00 - Drives for drilling, used in the borehole
F16D 3/72 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts
A rotary impact tool assembled in a drill string transfers torque and axial force between two components. The rotary impact tool includes an anvil and a hammer axially aligned with engaging faces. At a threshold torque, the hammer disengages from the anvil and rotates freely until a biasing element displaces the hammer to re-engage the anvil. Kinetic energy stored in the hammer is transferred to the anvil when the faces of the hammer and anvil re- engage. This provides an impact to the anvil and any attached component. The tool can accommodate misalignment of the attached components.
A universal joint assembled to a drill string transfers torque and axial force between two components where the shafts of the components are not completely aligned. The universal joint includes end members connected to opposite ends of a cable for connecting to components of the drill string. As the joint rotates the cable flexes to accommodate misalignment between the connected drill string components.
E21B 17/20 - Flexible or articulated drilling pipes
F16D 3/56 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic metal lamellae, elastic rods, or the like, e.g. arranged radially or parallel to the axis, the members being shear-loaded collectively by the total load
A cutter for a downhole bit includes a first face oriented in the direction of rotation of the bit and a second face oriented toward the borehole wall. A substrate supports the first face and second face and the substrate is received in a recess of the bit.
E21B 10/567 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
E21B 10/43 - 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
A universal joint assembled to a drill string transfers torque between two components where rotation of the components may not be completely aligned. The universal joint includes upper and lower longitudinal members each connected to opposite sides of a bearing element. The elements are connected to the bearing element at spaced radial positions. As the joint rotates the bearing element flexes between the connections to accommodate misalignment of the elements. Axial force can be transferred through the bearing element as well as torque.
F16D 3/79 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings the disc or ring being metallic
E21B 4/00 - Drives for drilling, used in the borehole
E21B 17/03 - CouplingsJoints between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer
89.
REPAIRING SUBSTRATES OF POLYCRYSTALLINE DIAMOND CUTTERS
A method of repairing a wear or cutting element of a tool, the tool comprising a sintered polycrystalline diamond compact (PDC) structure bonded to a cemented metal carbide substrate, an example of which is a PDC cutter for an earth-boring drill. One example of the method comprises heating a spot within the damaged area of the substrate while introducing the inlay material to the spot, resulting in the substrate at the spot being heated and the inlay material melting onto the spot, without heating the substrate to the point of causing graphitization or rupture of diamond-to-diamond bonds of the diamond structure.
E21B 10/573 - Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
A universal joint assembled in a drill string transfers torque between two components where the shafts of the components are not completely aligned. The universal joint includes two members each with pin connections on one end and axially extending arms on the other end. The axially extending arms intermesh when the members are assembled defining a closed cavity between the arms. The cavity retains a ball bearing held between two seats. The universal joint when assembled to portions of the drill string at the pins on each end transfer torque by intermeshing of the teeth. Axial force is transferred through the seats holding the ball bearing.
F16D 3/44 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs
F16D 3/18 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts having slidably-interengaging teeth
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
F16D 3/36 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected in which each pivot between the coupling parts and the intermediate member comprises a single ball
A universal joint assembled in a drill string transfers torque between two components where the shafts of the components are not completely aligned. The universal joint includes two members each with pin connections on one end and axially extending arms on the other end. The axially extending arms intermesh when the members are assembled defining a closed cavity between the arms. The cavity retains a ball bearing held between two seats. The universal joint when assembled to portions of the drill string at the pins on each end transfer torque by intermeshing of the teeth. Axial force is transferred through the seats holding the bail bearing.
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
E21B 10/43 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/43 - 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
E21B 10/48 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
E21B 10/54 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.
E21B 10/43 - 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
E21B 10/48 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
E21B 10/54 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
A rotating bit with cutters used in drilling operations to advance a borehole in the earth. The bit includes column cutters in the bit body in a recessed central area. The column cutters contact a column of borehole material that is formed during operation. The column cutters are oriented to fracture the column, producing larger cuttings or chips, and to exert a force on the column to limit lateral movement of the bit during operation.
A rotating bit with cutters used in drilling operations to advance a borehole in the earth. The bit includes column cutters in the bit body in a recessed central area. The column cutters contact a column of borehole material that is formed during operation. The column cutters are oriented to fracture the column, producing larger cuttings or chips, and to exert a force on the column to limit lateral movement of the bit during operation.
E21B 10/43 - 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
E21B 10/55 - 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
E21B 10/60 - Drill bits characterised by conduits or nozzles for drilling fluids
E21B 10/54 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
