With Suction Pump Inlet Communicating With Bore Bottom Patents (Class 175/213)
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Patent number: 4171187Abstract: An air injection sub for use with a dual conduit drill pipe string is provided having inner and outer concentric tubular members which are connected to the corresponding inner and outer conduits of a dual conduit string to provide isolated annular and central passageways and is particularly characterized by improved injection means in the inner tubular member which allows fluid to pass from the annular passageway into the central passageway through a plurality of apertures which open into the central passageway at a plurality of levels and angular positions, is field adjustable and provides improved erosion resistance.Type: GrantFiled: July 28, 1977Date of Patent: October 16, 1979Assignee: Walker-Neer Manufacturing Co., Inc.Inventor: Thomas C. Reed
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Patent number: 4168753Abstract: A tool for introducing self-tapping dowels in a structure by a drilling process which is accompanied by the generation of large-size drillings, has a shaft connectable with a drive, a dowel holder connectable with the shaft and having a receiving bore which includes a first section adapted to receive a dowel shank and a second section adapted to receive the large-size drillings, and a suction arrangement movable relative to the dowel holder to and from an operative position in which it communicates with the second portion of the dowel holder and draws air therethrough to thereby suck the large-size drillings into the second section of the dowel holder bore wherein they are retained during the drilling process.Type: GrantFiled: January 23, 1978Date of Patent: September 25, 1979Assignee: Robert Bosch GmbHInventors: Wilbert Raibetanz, Karl Seitz, Karl Wanner
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Patent number: 4168925Abstract: A device for boring out tubes, comprising a boring bar with cutting tools on its periphery and an axial channel for coolant liquid injection communicating with radial injection ducts emerging in front of said tools.The boring bar is provided at its end with a fixed cover whose outer diameter is less than the inner diameter of the rough tube to be machined, this cover being provided with a peripheral flange directed towards the tools and which is located at the level of the radial injection ducts.Application : for machining tubes in the oil industry.Type: GrantFiled: April 3, 1978Date of Patent: September 25, 1979Assignee: Cri-DanInventor: Yves J. Dufresne
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Patent number: 4134463Abstract: An air lift system for large diameter borehole drilling is disclosed. The system is applicable in drilling operations where a vertical pilot hole is drilled below the point to which the borehole will later be enlarged and a slant hole is drilled obliquely to intersect the pilot hole near its nether position. During the drilling operation, the circulation system pumps drilling fluid down the annulus of the borehole to cool the cutterhead and to mix with the cuttings. The drilling fluid carrying the cuttings then moves down the pilot hole and up through the slant hole. A plenum is located in the slant hole to assist in the lifting of the drilling fluid. The plenum includes a tapered transition pipe, a tapered discharge horn, and an air diffusion ring located at the throat of the discharge horn. The diffusion ring is utilized to inject outside air into the drilling fluid passing therethrough.Type: GrantFiled: June 22, 1977Date of Patent: January 16, 1979Assignee: Smith International, Inc.Inventor: James H. Allen
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Patent number: 4100981Abstract: Apparatus for concentric multi-string drilling with reverse air vacuum for the entrainment of chips and dust, selectively controlled through a plurality of annuli defined by the multiplicity of drill strings adapted to individually and/or cooperatively operate drill bits and reamers and the like to bore geological formations as required.Type: GrantFiled: February 4, 1977Date of Patent: July 18, 1978Inventor: John D. Chaffin
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Patent number: 4097176Abstract: A hammer drill is provided with an accessory that is rotatably supported on the chuck of the drill and has a handle fixed to the support rotatable on the drill chuck. Structure is provided forming a throughgoing passage extending from the tool through the handle to the outer end of the handle and a flexible conduit is connected to this handle at the outer end thereof for drawing gas and particles from the tool through the passage. The structure may surround an intermediate portion of the tool at the radial opening of an axial bore through the tool so that particles and the like can be aspirated directly through the tool. Alternately a telescoping tube is provided connected at its rear end to the passage at the support and at its front end to a cup through whose base the drill passes, so that this cup is pressed against the workpiece during the drilling operation.Type: GrantFiled: September 22, 1976Date of Patent: June 27, 1978Assignee: Robert Bosch GmbHInventors: Karl Wanner, Wilbert Reibetanz, Manfred Bleicher, Herbert Wiesner
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Patent number: 4074779Abstract: A hydraulic borehole mining device is provided of the type wherein a pair of high pressure water jets located along the length of the device are used to cut the mineral to be mined and a slurry pick-up system used to transport the particles cut away by the jets back to the ground surface. The slurry pick-up may include a slurry jet pump which is also supplied with water under pressure. The jet pump includes a jet nozzle which is directed so as to draw particles through screens that cover inlets for the particles located about the circumference of the device, and which thus entrains the particles in a slurry with the water, this slurry of water and mineral particles being pumped back to the surface.Type: GrantFiled: May 9, 1977Date of Patent: February 21, 1978Assignee: The United States of America as represented by the Secretary of the InteriorInventors: John B. Cheung, Earll M. Murman
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Patent number: 4055224Abstract: A caisson and connecting conductor pipe sections are lowered to a predetermined position on the ocean underwater floor. A drill stem having a combined drilling and reaming tool is positioned within the conductor pipe and caisson. Drilling mud is reversed-circulated through the annular space between the conductor pipe and caisson and the drill stem, the drilling mud returning through the drill stem. The tool mounted on the drill stem is utilized to drill to a predetermined depth whereupon one or more reaming arms open outward from the tool and are rotated, thereby cutting out a volume of the ocean floor within which the caisson may be positioned.Type: GrantFiled: July 1, 1975Date of Patent: October 25, 1977Inventor: Richard A. Wallers
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Patent number: 4047579Abstract: A sea drilling jig comprises a tool carrier ship having a hull with a drill tower mounted on the hull over a hull opening which extends downwardly into the sea below the tower. A riser head is engageble in the hull opening and it may be coupled to the hull. The riser head includes a float portion with a ballast tank and it has a vertically extending riser tube opening therethrough for accommodating a riser tube and for holding it in position relative to the tower. The riser head is detachable from the carrier ship and may be ballasted to float at a level below the ship out of the turbulence area of foul weather whenever foul weather occurs.Type: GrantFiled: March 4, 1976Date of Patent: September 13, 1977Assignee: Rheinstahl AGInventors: Hellmut Wilckens, Helmut Wetzel
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Patent number: 4036308Abstract: In the process and apparatus for removing the drillings from the drilling te of a drill described, removal is effected through a conduit, extending along the axis of a drill and possibly an adapter for a drilling machine, by a vacuum provided by a compressed-air stream traversing the removal conduit, said compressed air also serving to blow the drillings sucked into the conduit out of the conduit and away from the drilling site.Type: GrantFiled: April 7, 1975Date of Patent: July 19, 1977Assignee: Gebruder Heller Verwaltungsgesellschaft mit beschrankter HaftungInventor: Hugo Dellenberg
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Patent number: 4031973Abstract: This invention relates to placer mining and more particularly to a novel bit adapted for use in stream beds, dependably to break up and deliver to and through a sluice box a quantity of divided, water-borne gravel, sand, clay and ore for the conventional analysis and segregation of the precious metal or metals contained therein. There have been prior proposals of a generally similar nature but the material dislodging bits employed have been so poorly designed that they have been severely limited in capacity or have quickly become clogged by gravel, clay, etc. so that the ore digging operation has had to be frequently interrupted for the elimination of obstructing material. The present invention substantially eliminates this shortcoming.Type: GrantFiled: November 10, 1975Date of Patent: June 28, 1977Inventors: Robert G. Claye, David S. Wilson
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Patent number: 4022285Abstract: A drill bit for drilling deep wells such as oil wells has a cone at the bottom and a fluid bore at the top. The fluid is directed by nozzles upward through a passageway so that the cone is maintained free of fluid and the cuttings from the cone are picked up by suction and carried through the discharge passageway. The jet from the discharge passageway supports the column of fluid surrounding the drill stem.Type: GrantFiled: March 11, 1976Date of Patent: May 10, 1977Inventor: Donald D. Frank
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Patent number: 3993146Abstract: Coal can be mined from a substantially vertical or steeply inclined seam by forming a cavity in the seam and filling the cavity with a magnetite slurry having a specific gravity greater than the coal being mined therefrom.As the coal is dislodged, it will float to the top and be pumped from the cavity by the excess magnetite slurry being supplied to the cavity. A coal-magnetite slurry separator is used to separate the coal from the magnetite slurry, whereupon the magnetite slurry is reinjected into the cavity.Type: GrantFiled: August 26, 1974Date of Patent: November 23, 1976Assignee: Continental Oil CompanyInventors: William N. Poundstone, William J. Miller
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Patent number: 3968845Abstract: Apparatus and method for complete reverse air vacuum drilling by entrainment of chips and dust in a high velocity air stream created by applying a vacuum to the drill stem or the annulus of a drilled hole, removing the drilled particles by entrainment in the flow of air created by the vacuum and collection of the drilled particles for visual or other analysis.Type: GrantFiled: March 6, 1975Date of Patent: July 13, 1976Inventor: John D. Chaffin
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Patent number: 3958651Abstract: Drill cuttings are effectively removed from the bottom of a bore before they can adversely affect the operation of the bit. The bit includes a body member rotatably supporting individual cutter members. A shield means projects from the body member proximate the cutter members. A first portion of the shield means has an outside diameter substantially equal to the outside diameter of the cutter means and substantially equal to the diameter of the bore and a second portion having an outside diameter substantially less than the outside diameter of the cutter members and substantially less than the diameter of the bore. A first passage extending through the bit is adapted to provide communication with a vacuum source to assist in removing the drill cuttings. A second passage extending along the length of the bit is adapted to provide communication with a gas pressure source to assist in removing the drill cuttings.Type: GrantFiled: July 31, 1975Date of Patent: May 25, 1976Assignee: Dresser Industries, Inc.Inventor: James Whitehurst Young
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Patent number: 3948330Abstract: Drill cuttings are effectively removed from the bottom of a bore before they can adversely affect the operation of the bit. The bit includes a body member rotatably supporting individual cutter members. A shield means projects from the body member proximate the cutter members. A first portion of the shield means has an outside diameter substantially equal to the outside diameter of the cutter means and substantially equal to the diameter of the bore and a second portion having an outside diameter substantially less than the outside diameter of the cutter members and substantially less than the diameter of the bore. A first passage extending through the bit is adapted to provide communication with a vacuum source to assist in removing the drill cuttings. A second passage extending through the bit is adapted to provide communication with a gas pressure source to assist in removing the drill cuttings.Type: GrantFiled: February 18, 1975Date of Patent: April 6, 1976Assignee: Dresser Industries, Inc.Inventor: James Wilson Langford, Jr.
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Patent number: 3946818Abstract: A dust guard intended for preventing drill dust from being spread out into the atmosphere during air flushed rock drilling. The dust guard comprises a bell-shaped suction shell which in operation is located around the drill stem at the rock surface and which is continuously discharged by a suction source. The shell is provided with a flexible collar the object of which is to hinder dust particles from leaving the shell along the drill stem. The flexible collar comprises an outer ring and a number of resilient tongues arranged in a fan-like manner between the outer ring and a central drill stem opening. The collar may be made in one piece.Type: GrantFiled: January 21, 1974Date of Patent: March 30, 1976Assignee: Atlas Copco AktiebolagInventor: Klas Goran Gunnarsson Ek
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Patent number: RE29021Abstract: Hydraulic underground mining system adapted to operate through a small diameter well bore and into a subterranean body and including a mining capsule carried on the lower end of an elongate support structure. The mining capsule includes a liquid jet nozzle at its upper end for forming a laterally directed jet stream to impact material in the ore body and to pulp the same into a slurry. An orifice having a grate for preventing entry of excessively large material is positioned below the jet so that freshly pulped slurry flows into the orifice, the latter being connected to an elongate positive displacement pump mounted below the orifice. Suitable hydraulic power means are provided for operating the pump and for progressively moving the jet stream .[. .]. .Iadd.through .Iaddend.at least a portion of an arc. Fixed liquid jets are also provided at the pump inlet for flushing and priming and to the lowermost portion of the capsule and to facilitate movement of the apparatus in the well bore.Type: GrantFiled: July 14, 1975Date of Patent: November 2, 1976Assignee: Marcona CorporationInventors: William R. Archibald, John J. Gilbert