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7467671 |
A method is provided for removing a body of selected material from the interior of a casing extending into a borehole formed in an earth formation. The method comprises lowering a drill bit for further drilling of the borehole, into the ...
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7464773 |
A lubricating nutating single cone drill bit 10 includes bit shank 12 with an axially skewed journal 18 rotatably retaining cutter body 22 . Bearings ( 26, 28, 30, 32 ) enable rotation of the cutter body 22 . Lubrication flows to...
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7464772 |
In one aspect of the present invention, a method has steps for forming a wellbore with a tool string bit having a body intermediate a shank and a working face. The bit body has a fluid passageway and at least a portion of a jack element ...
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7461706 |
A drilling apparatus includes a cutting structure defined by a percussive action cutter and at least one other cutter. The percussive action cutter is adapted to be urged in a drilling direction by hydraulic pressure force, while the oth...
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7461705 |
A method for oscillating a drillstring, the drillstring extending into the earth, the drillstring having a bit on a lower end thereof, the bit for drilling into the earth, the drillstring connected to a motive apparatus, the motive appar...
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7455126 |
A percussion drill bit for drilling into a subterranean earth formation. The drill bit has a central longitudinal axis and is operable by applying axial percussive motion along the axis and rotary motion about the axis. The drill bit is ...
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7455125 |
A drilling tool including at least two cutting elements (e.g., redundant or upon a selected profile region) sized, positioned, and configured thereon so as to contact or encounter a change in at least one drilling characteristic of a sub...
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7451834 |
An impact enhancer apparatus includes: a substantially tubular inner member, a substantially tubular outer member that is axially movable in relation to the inner member, a primary energy storage device adapted to store energy when the i...
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7445057 |
A drill head has a domed leading face and carries cutting teeth. A tubular drill string can be used to drive the head into the ground. An off-center aperture communicates with the bore of the string, by means of a connecting passage, whi...
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7434632 |
Roller cone drill bits may be formed with cutting elements and cutting structures having cutting element profile angles selected to minimize cone wobble and improve life of associated bearings and seals. Normal force axes of the cutting ...
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7431105 |
Methods and apparatuses associated with a rotary driven well drilling rig. One method includes providing a rig having: an erectable mast; a head drive unit for rotatably driving drill pipes into a surface; a pumping unit to deliver a flu...
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7428927 |
A cement float collar is made for pumping downhole and into engagement with a groove formed in the casing, called the profile nipple. As such, no restriction is needed in the casing for accepting or latching the float collar and the port...
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7419018 |
In one aspect of the invention, a downhole drill string component has a shaft being axially fixed at a first location to an inner surface of an opening in a tubular body. A mechanism is axially fixed to the inner surface of the opening a...
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7416258 |
Apparatus and methods of using lasers are provided for spalling and drilling holes into rocks. A rock removal process is provided that utilizes a combination of laser-induced thermal stress and laser induced superheated steam explosions ...
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7407021 |
An adapter attachment for an auger which includes an connecting shaft sized and shaped to be attached to the pilot bit hole present in the end of an auger, after the removal of pilot bit. The adapter also includes a bolt flange for conne...
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7407020 |
Methods and apparatuses for drilling a borehole are disclosed. An electric motor electrically and mechanically coupled to a wired drill pipe is provided. The electric motor couples to a shaft that rotates when power is supplied to the el...
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7406918 |
A method of blasting in which rock pile profile associated with a blast field is controlled by precise control of the detonation delay times between and/or within individual blastholes in the blast field, in combination with the control ...
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7404457 |
A downhole abrading tool has a body with a first end for connection to a drill string, a cutting end, a drilling fluid passageway, and a fusible material disposed within the body. The fusible material is capable of igniting and combustin...
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7392857 |
In one aspect of the invention a drill bit comprises an axis of rotation a body and a working face. The body comprises a fluid passageway with a first seat and houses a jack element substantially coaxial with the axis. A stop element is ...
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7389833 |
A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally d...
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7387174 |
A method of sealing the wall of a wellbore ( 1 ) as it is being drilled through a subterranean formation using a drill string ( 3 ) having a drill bit ( 4 ) on the lower end thereof comprises fitting to the lower end of a drill string ( ...
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7377335 |
An apparatus and method for the movement of drilling equipment between topographically adjacent drilling locations comprises positioning a transportable planar surface over the adjacent drilling locations between which it is desired to m...
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7377334 |
Methods and apparatus for rotating a stripper assembly in use with a rotating drilling head. A drive system is disposed external to the rotating drilling head and generates rotational motion to match the rotation of a drillstring running...
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7363990 |
A cutting device for sinking a cut hole in the ground, having a support on which are mounted in rotary manner about in each case one cutting wheel rotation axis at least two cutting wheels, at least one cutting wheel drive mechanism for ...
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7360608 |
A rotary drill bit is disclosed, including at least one cutting element affixed thereto and configured to form a distinct borehole surface in response to drilling a subterranean formation. At least one substantially helically extending f...
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7357200 |
An earth auger presents a shank having a spiral earth removing structure therearound. The structure first presents a series of spirally positioned housings with cutting teeth therein followed by a spiral cutting edge about the shank. The...
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7356450 |
A method for designing a roller cone bit that includes steps of selecting design parameters for the roller cone bit, drilling parameters, and parameters of an earth formation, simulating drilling of the earth formation by the roller cone...
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7353888 |
The present invention provides drilling assembles and methods that are especially useful for a bottom hole drilling assembly for drilling/reaming/or other operations related to drilling a borehole through an earth formation. In one embod...
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7353887 |
An active differential pressure device (APD device) in fluid communication with a returning fluid creates a differential pressure across the device, which controls pressure below the APD Device. In embodiments, a control unit controls th...
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7350596 |
A borehole reamer which may be deployed to a desired depth in an existing uncased borehole or below existing casing and used to substantially expand the diameter of the borehole. The diameter may be expanded by an amount that ranges from...
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7350595 |
A drilling device is composed so as to drill a drilled object composed of a brittle material with the end of a rotating core bit by using a core bit in which a bit, formed by dispersing and arranging a cemented carbide or super abrasive ...
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7343985 |
A solid body contains a surfactant and crushed walnut hulls. The solid body is shaped to predetermined dimensions that permit passage through the central interior opening of drill pipe. The solid body dissolves in drilling mud for delive...
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7343983 |
A zone isolating and testing apparatus comprising an isolation tool and a downhole flow control means and a method of using such apparatus. The zone isolating and testing apparatus is particularly useful for testing zones during reverse ...
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7341116 |
A device and system for improving efficiency of subterranean cutting elements uses a controlled oscillation super imposed on steady drill bit rotation to maintain a selected rock fracture level. In one aspect, a selected oscillation is a...
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7337858 |
In one aspect of the invention, a drill bit assembly has a body portion intermediate a shank portion and a working portion, the working portion having at least one cutting element. The working portion also has an opening to an axial cham...
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7334650 |
Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus comprises a motor operating system disposed in a...
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7328755 |
In one aspect of the present invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has at least one cutting element and the body portion has at least a portion of a jack...
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7320371 |
A method and device for boring, particularly percussion boring or rotary percussion boring, a hole in soil or rock material and for forming an anchoring. A borehole is formed by inserting a drill bit, and a casing tube is placed inside t...
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7320365 |
The present invention generally relates to a method for recovering productivity of an existing well. First, an assembly is inserted into a wellbore, the assembly includes a tubular member for transporting drilling fluid downhole and an u...
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7318490 |
Drill stem elements and connections are shown with advantages such as being mechanically robust. The absence of a side access window in a sonde housing is one design feature that provides robust mechanical properties. Further advantages ...
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7318489 |
A hydraulic motor for use in subterranean drilling operations in which a drive fluid within a first reservoir is forced through the motor by a high pressure working fluid, such as drilling mud, the drive fluid entering a second reservoir...
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7316279 |
A cutting element includes a layer of integrally bonded superabrasive particles disposed over a substrate. The layer has an outer circumference comprising at least one trough having a distinct cutting point on either side of the trough. ...
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7314099 |
An expandable downhole tool comprises a tubular body having an axial flowbore extending therethrough, at least one moveable arm, and a selectively actuatable sleeve that prevents or allows the at least one moveable arm to translate betwe...
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7311156 |
A method of drilling through a masonry structure 20 includes the steps of providing a drill 10 and using the drill 10 to drill a bore 18 in the masonry structure 20 . The method also includes a step of providing a reaction membe...
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7311148 |
The present invention relates methods and apparatus for lining a wellbore. In one aspect, a drilling assembly having an earth removal member and a wellbore lining conduit is manipulated to advance into the earth. The drilling assembly in...
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7308954 |
A rotating diverter head for use on a blow out preventer stack of an oil, gas or geothermal well. While providing for sealing and rotation of a drill pipe through the head, the head additional includes a flange on which the head is rotat...
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7306055 |
A method for installing a mobile drilling rig at a drilling site entails transporting the mobile drilling rig to the drilling site, wherein the mobile drilling rig is made three sections: two substructures and a mast section. The substru...
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7302374 |
A method for designing a drill bit that involves simulating a drill bit having cutting elements disposed thereon is provided. In particular, the method involves determining the axial forces acting on at least one of the cutting elements ...
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7299885 |
A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter...
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7296639 |
A wellstring assembly comprising a tubular first wellstring part with a passageway; a second wellstring part co-operating with the first wellstring part; and a releasable wellstring-interconnecting means for selectively interconnecting t...
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