Class 175/100 - Discharge passage for motive fluid directed toward bore entrance

Subclass of Class 175 - Boring or penetrating the earth
Definition: Apparatus in which the motor is fluid operated and means
No. of patents: 31
Last issue date: 02/12/2008

Number	Title	Issue Date
7328755	Hydraulic drill bit assembly 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 jackleg apparatus. The jackleg ap...	02/12/2008
7270196	Drill bit assembly In one aspect of the present invention a drill bit assembly comprises a body portion intermediate a shank portion and a working portion. The working portion has at least one cutting element. The body portion has at least a portion of a reactive jackleg apparatus whi...	09/18/2007
7198119	Hydraulic drill bit assembly 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 jackleg apparatus. The jackleg ap...	04/03/2007
7172039	Down-hole vane motor The present invention generally relates to an apparatus and method for use in a wellbore. In one aspect, a downhole tool for use in a wellbore is provided. The downhole tool includes a housing having a shaped inner bore, a first end and a second end. The downhole to...	02/06/2007
6763899	Deformable blades for downhole applications in a wellbore A method and apparatus for controlling fluidic torque in a downhole tool is provided. One or more rotatable components of the downhole tool comprise a deformable material, such as rubber or SMA, selectively deformable in response to the flow of fluid through the dow...	07/20/2004
6702045	Drilling apparatus There is provided drilling apparatus (10) comprising a hammer casing (11), a free piston motor piston guide and porting sleeve (12), a drive sub (13), a drill bit (15) splined by shank (16) to the drive sub (13). Below the splined portion (17) the drive s...	03/09/2004
6427787	Drilling motor that operates pursuant to the Moineau principle for drilling deep holes The drilling motor is provided that operates pursuant to the Moineau principle for drilling deep holes or wells in the ground. A helically extending rotor is disposed in a stator having a rigid shell that is provided on the inside with an inwardly helical...	08/06/2002
6364038	Downhole flexible drive system Improvements for a downhole flexible drive system for drilling high angle well holes or curved holes from the vertical to the horizontal with an ultra short radius to drill a horizontal drain hole. The improvements include a flexible shaft that connects t...	04/02/2002
6206112	Multiple lateral hydraulic drilling apparatus and method Hydraulic drilling apparatus and method in which a hole is formed with a series of drill heads and strings of successively smaller diameter. After each section of the hole is formed, the drill head is withdrawn back through the string, leaving the string ...	03/27/2001
6102138	Pressure-modulation valve assembly A drillstring pressure-modulation valve which is usable in combination with a downhole drilling motor and a drillstring thruster to compensate for changes in pressure drop through the drilling motor which normally occur during drilling. When conditions ch...	08/15/2000
6015018	Method and apparatus for moving a piston An apparatus for creating a pulling force on a bottom hole assembly contained within a bore hole is disclosed. Generally, the apparatus comprises a housing, a piston having a first section and a second section, and a venturi member, operatively associated...	01/18/2000
5682957	Water separator for a down hole drill A device for use within the backhead of a down hole percussive drill, for removing debris from a drillhole, includes a flow control member in the drill backhead for inducing cyclonic flow of percussive fluid, to concentrate the heavier water and other mat...	11/04/1997
5590725	Drilling column with sledgehammer drilling head A drilling column has a percussive drilling head attached to a lower end thereof. The drilling column includes a skirt extending downwardly from a lower end thereof in surrounding relationship to the drilling head. The skirt is disposed in eccentric relat...	01/07/1997
5351764	Method and apparatus for enlarging an underground path A method and apparatus for enlarging an inverted arcuate underground path between two surface locations is disclosed, where the cuttings from the enlarging are removed. After the drilling of a pilot borehole, and possibly after some reaming operations, a ...	10/04/1994
5143162	Device for removing debris from a drillhole A device for use adjacent to a down-the-hole percussive drillhead, for removing debris from a drillhole, includes a separator for removing water and other matter from the percussive fluid prior to the percussive fluid entering the drillhead. The water and...	09/01/1992
5139095	Method for removing debris from a drillhole A method for removing debris from a drillhole, includes positioning a separator adjacent to a down-the-hole percussive drillhead, for removing water and other matter from the percussive fluid prior to the percussive fluid entering the drillhead. The water...	08/18/1992
4919204	Apparatus and methods for cleaning a well Apparatus for pressurized cleaning of well flow conductors. The apparatus has a non-rotating inner mandrel, an adapter to connect the inner mandrel to a work string, a rotating housing on the exterior of the inner mandrel, and a nozzle body attached to th...	04/24/1990
4905775	Drilling system and flow control apparatus for downhole drilling motors To divert sufficient fluid flow through an unsealed bearing section of a downhole drilling motor, a flow control apparatus is provided for insertion between the power section of the motor and the bottom of a drill bit which is to be turned by the motor. T...	03/06/1990
4880065	Air motor operated rotary earth drilling tool A new and improved air motor operated rotary earth drilling tool for use with a source of high pressure, high volume compressed air has a circulation control housing, a motor housing, a reduction gear housing, and a bearing housing connected longitudinall...	11/14/1989
4852667	Pressure relief process for well-drilling A drill string has a bulge equipped with a system of n injection ducts connecting the interior of the string surrounding annular space and opening upwardly into the space to divert a part of the drilling fluid supplied to the bit. This arrangement makes i...	08/01/1989
4771835	Downhole hammer A down hole hammer comprising a substantially cylindrical casing having a top sub at one end and a drill bit support at the other; a central passageway extending through the top sub, casing and drill bit support; a central tube coaxial with the casing and...	09/20/1988
4678045	Turbine tool A drill string is made flexible near the lower marginal end thereof, and a pneumatic turbine motor is located at the lower terminal end thereof. The pneumatic turbine is connected to a planetary gear reduction system for rotating a drill bit. The diameter...	07/07/1987
4553611	Pressure drop regulator for downhole turbine In a borehole forming operation, the flow of gas through a downhole pneumatic motor is regulated to eliminate horsepower variations due to variations in bottom hole pressure. The pneumatic motor is connected to the lower end of a tubing string and an orif...	11/19/1985
4545443	Means for drilling Drilling means of the type having a pilot bit, a reamer and a guidemember mounted in the bottom end of the casing tube, and which transmits impacts to the casing. The guide member is snugly enclosed in the thickened mouth portion of the casing tube and ha...	10/08/1985
4432423	Apparatus for extended straight line drilling from a curved borehole Apparatus by which a vertical borehole is curved to a new angle and extended through a production reservoir. A vertical borehole of a suitable diameter is extended downhole to the proximate depth of the production reservoir. A Zublin drill guide apparatus...	02/21/1984
4408669	Means for drilling Drilling means of the type having a pilot bit, a reamer and a guidemember mounted in the bottom end of the casing tube, and which transmits impacts to the casing. The guide member is snugly enclosed in the thickened mouth portion of the casing tube and ha...	10/11/1983
4274497	Skirted hammer sub for dual tube drilling A skirted crossover sub for joining an air hammer to a string of dual concentric drill pipe is characterized by passageways for directing air from the pipe string annulus to operate the hammer and for directing exhaust air and cuttings from the hammer bit...	06/23/1981
4106571	Pneumatic impact drilling tool A pneumatically operated impact drilling tool for earth drilling, includes a reciprocating hammer, an anvil positioned under the hammer and a feeder tube extending through the hammer. The drilling tool is connected to a string of drilling pipe and high pr...	08/15/1978
3993355	Mining machine having pneumatic conveyance and cutter head floor driven about anchor A mining system for extraction of coal or the like from narrow seams has a conduit system for pneumatic conveyance of mined material. A leading section of apparatus comprises a cutter head assembly driven by an air motor which exhausts into the conduit sy...	11/23/1976
3948058	Device for soil sampling under water The device features its housing carrying the soil sampling ing socket and the striker arranged coaxially to said socket, and adapted to act thereupon and establish some chambers in said housing, which are alternatively communicated, through the inlet fitt...	04/06/1976
3941196	Percussive air hammer and core bit apparatus An airhammer and core bit apparatus including a housing and a hammer piston reciprocable in the housing for delivering repeated impact blows to an anvil secured to or forming part of a core bit which produces a core in a bore hole being drilled. A central...	03/02/1976

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Class 175/100 - Discharge passage for motive fluid directed toward bore entrance