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7621350 |
Impregnated bit with changeable hydraulic nozzles
A diamond impregnated bit crown has blades formed thereon. Flow channels are formed between the blades, the flow channels having inner and outer ends and extending outward to a gage surface of the...
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7621349 |
Drill bit with a fixed cutting structure
The invention concerns a drill bit ( 1 ) with stationary cutting structure, comprising a tool body ( 2 ) and several blades ( 3 ), which consist of a metal matrix impregnated with abrasive...
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7617886 |
Fluid-actuated hammer bit
In one aspect of the present invention, a drilling assembly has a string of downhole tools connected to a drill bit with a bit body intermediate a shank and a working face. The drill bit is...
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7533737 |
Jet arrangement for a downhole drill bit
A drill bit having a bit body, and axis of rotation, and a working face, the working face having a plurality of cutting elements. A jack element extends from the working face and is coaxial with...
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7520343 |
Retrievable center bit
A retrievable center bit for use with a tubular including an inner bore and a drill shoe cutter mounted thereon. The retrievable center bit may include a body positionable in the bore of the...
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7481284 |
Converging diverging nozzle for earth-boring drill bits, method of substantially bifurcating a drilling fluid flowing therethrough, and drill bits so equipped
A nozzle for use on a rotary drill bit for forming a subterranean borehole includes a body and at least one passageway extending through the body from an inlet to an exit aperture. The passageway...
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7413033 |
Directional drill head
A drill head is shown that provides improved steering in difficult ground conditions such as dry and compacted soil. A drill head is shown with features that include a narrow front portion, a sharp...
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7373994 |
Self cleaning coring bit
A coring member useful in wellbore excavating operations comprising at least one segment disposed onto the end of a shaft, where a channel is formed between each at least one segment. The at least...
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7290626 |
Transmission sleeve
The invention is a transmission sleeve for the reverse circulation down hole hammer activated by fluid under pressure, the hammer including an outer hammer casing, a drill bit retaining means ( 17...
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7281592 |
Injecting a fluid into a borehole ahead of the bit
A method and system for introducing a fluid into a borehole, in which there is arranged a tubular drill string including a drill bit, wherein the drill bit is provided with a passageway between the...
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7252164 |
Cutting structure based hydraulics
A drill bit configures hydraulic streams from the bit nozzles for the particular cutting structure to be cleaned based on the cutting structure location and geometry. The projected impingement...
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7243743 |
Drilling assembly and method for drilling a barehole into geological formations
A drilling assembly for drilling a borehole into geological formations. The assembly comprises a drilling shaft and a pump device, both placable in the borehole. The drilling shaft comprises a...
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7213661 |
Dual property hydraulic configuration
A rotary cone rock bit includes one or more hole cleaning nozzles and one or more bit cleaning nozzles. The hole cleaning nozzles of one drill bit define a projected fluid path disposed at a...
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7117960 |
Bits for use in drilling with casting and method of making the same
Bits for use in drilling with a well completion string having a bit body and a cutting face that includes a plurality of sets of cutter elements mounted on the cutting face. The bit body has a...
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7090039 |
Assembly for drilling low pressure formation
The invention relates to a drilling assembly for drilling a borehole into geological formations which assembly comprises:
a drilling shaft placable in the borehole, which shaft has a...
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7055626 |
Core bit having features for controlling flow split
A core bit for cutting core samples in subterranean formations. The core bit has interior geometric features configured to control the quantity of drilling fluid, or flow split, flowing into a...
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6986297 |
Method of manufacturing PDC cutters with chambers or passages
A cutting element for a drill bit used in drilling subterranean formations is formed with an internal chamber or passage for the flow of drilling fluid therethrough. The cutting element includes a...
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6966393 |
Drill drive steel
A drive steel member for driving engagement with a rotary drilling machine, including a chuck adapter having main body and chuck seating means and being constructed and arranged in fixed, sealed...
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6962217 |
Rotary drill bit compensating for changes in hardness of geological formations
A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to...
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6932171 |
Ground drilling machine
A ground drilling machine comprises a controller for automatically controlling the injection of working liquid according to the output signal output as a function of the rotating condition of the...
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6913094 |
Leading body for ground drilling and ground drilling machine
A leading body for a ground drilling machine is provided which includes a main body which is tapered at a front end thereof to form a first sloped surface and a second sloped surface on opposite...
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6877571 |
Down hole drilling assembly with independent jet pump
A Down Hole Drilling Assembly (DHDA) that induces artificial lift to remove the drilling fluid from a well bore using a jet pump attached to a casing string. The DHDA includes a drill string that...
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6848517 |
Drillable drill bit nozzle
A drill bit nozzle providing a through bore for the passage of drilling fluid through a drill bit. The nozzle is made of a material or materials which can be drilled through by standard well bore...
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6702940 |
Device for transporting particles of magnetic material
A device for transporting particles of a magnetic material in a selected direction, having a support member having a support surface for supporting the particles, the support surface extending in a...
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6698538 |
Drill bit having adjustable total flow area
A drill bit is disclosed which includes a bit body having a plurality of ports therein arranged to provide a flow path between an interior of a drill string and the exterior of the bit body. At...
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6668948 |
Nozzle for jet drilling and associated method
A jet nozzle is provided for drilling holes through the earth, such as drainholes around a well. The nozzle may include orifices for discharging fluid to drive the nozzle forward and includes a...
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6655234 |
Method of manufacturing PDC cutter with chambers or passages
The cutting element including a cutting element for a drill bit used in drilling subterranean formations is formed with an internal chamber or passage for the flow of drilling fluid therethrough. A...
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6581702 |
Three-cone rock bit with multi-ported non-plugging center jet nozzle and method
A three-cone rock bit employing a non-plugging center jet nozzle with a plurality of staggered inlet orifices leading to side passageways to reduce bit balling. The nozzle defines a tapered cavity...
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6547017 |
Rotary drill bit compensating for changes in hardness of geological formations
A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to...
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6510907 |
Abrasive jet drilling assembly
A drilling assembly for drilling a borehole into an earth formation is disclosed having a drill string extending into the borehole and a jetting device arranged at a lower part of the drill string,...
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6484825 |
Cutting structure for earth boring drill bits
A drill bit for drilling a borehole having a bit body with an axis of rotation, a leading face, and a plurality of blades upstanding from the leading face. At least one of the blades terminates in...
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6470980 |
Self-excited drill bit sub
A drill bit sub attachable to a drilling string above the drill bit, the sub having an oscillation chamber with at least two radially and axially spaced, annular impingement surfaces interconnected...
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6435288 |
Rock drill bit
A rock drill bit comprising a main body arranged to drill at the end of a shaft of the drilling assembly, the main body having a diameter larger than that of the shaft, a front face on the main...
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6435435 |
Apparatus for comminution of solid materials using a processor-controlled liquid jet
The present invention is directed to a tire comminution apparatus that is of simple construction and that can be operated without excessive maintenance. According to the present invention, a...
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6405812 |
Drilling tool for the air-lifting process
A drilling tool for drilling bore holes into the ground and for removing the drilled material using an air-lifting process. The drilling tool has a drilling head equipped at its lower surface with...
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6397959 |
Mill
A mill is provided for grinding and cutting objects in various wells, such as oil wells, which will typically have a cement plug or a metallic item of debris which must be ground into small enough...
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6390211 |
Variable orientation nozzles for earth boring drill bits, drill bits so equipped, and methods of orienting
Drill bit nozzle assemblies and methods of mounting the nozzle assemblies relative to a drill bit for drilling subterranean earth formations are described in which the nozzle assembly provides...
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6374932 |
Heat management drilling system and method
The invention is embodied in an earth boring tool comprising a bit body having a rotatable working head portion with a cutter element having a wear table of superhard material bonded to a...
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6311793 |
Rock bit nozzle and retainer assembly
A nozzle and retainer assembly is provided for use in a rotary cone earth boring bit that allows for a larger internal passage in the nozzle. In one aspect, the assembly has a nozzle seated on a...
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6302223 |
Rotary drag bit with enhanced hydraulic and stabilization characteristics
A fixed cutter, or rotary drag, bit for drilling subterranean formations, exhibiting an enhanced resistance to bit balling and an improved rate of penetration. The bit includes an auger-like blade...
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6290006 |
Apparatus and method for a roller bit using collimated jets sweeping separate bottom-hole tracks
A roller cone jet-type drill bit with nozzles which direct collimated streams of mud at different angles, to sweep different radii of the hole bottom.
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6269891 |
Through-drill string conveyed logging system
A system for drilling and logging of a wellbore formed in an earth formation is provided. The system comprises a logging tool string and a drill string having a longitudinal channel for circulation...
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6250408 |
Earth-boring drill bits with enhanced formation cuttings removal features
Rotary drag bits with enhanced formation cuttings removal achieved by apportioning drilling fluid flow in relationship to cuttings volume generated by various groups of cutters on the bit, each...
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6227316 |
Jet bit with variable orifice nozzle
A nozzle for a drill bit has an adjustable orifice, allowing a single nozzle to change the pressure drop for a given flow rate. This is accomplished by the use of two plates, each having a shaped...
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6192999 |
Extended drill bit nozzle having extended retainer
A novel nozzle and retainer assembly are used in an earth boring rock bit. A tapered interface between the nozzle and retainer protects the nozzle from impact and breakage downhole. A bushing may...
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6186251 |
Method of altering a balance characteristic and moment configuration of a drill bit and drill bit
A method of altering the force balance characteristic or moment configuration of an earth-boring rotary-type drill bit by altering the net hydraulic direction vector of drilling fluid exiting from...
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RE37006 |
High flow weld-in nozzle sleeve for rock bits
A nozzle sleeve for the retention of replaceable fluid nozzles for rock bits is disclosed. The sleeve is secured within the body of the rock bit. A first upstream end of the sleeve communicates...
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6161635 |
Drilling system drive steel
A drive steel member for driving engagement with a rotary drilling machine, including a chuck adapter having main body and chuck seating elements and being constructed and arranged in fixed,...
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6142247 |
Biased nozzle arrangement for rolling cone rock bits
An earth boring bit having a cone rotatably secured to a cantilevered bearing shaft and a nozzle that discharges a jet stream of fluid having a high velocity core and a lower velocity skirt. The...
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6142248 |
Reduced erosion nozzle system and method for the use of drill bits to reduce erosion
Subterranean drill bits and particularly to nozzle features to be incorporated in subterranean bits. In one embodiment, the nozzle assembly of the invention defines a wear resistant structure which...
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