Class 175/314 - WITH WELL-TYPE SCREEN

Subclass of Class 175 - Boring or penetrating the earth
Definition: Apparatus combined with means for separating solids from
No. of patents: 35
Last issue date: 10/04/2011

Number	Title	Issue Date
8028768	Displaceable plug in a tool string filter A filter for a drill string comprises a perforated receptacle having an upper end and a lower end. The upper end of the filter comprises a drilling mud intake, and the lower end of the filter comprises an opening. A displaceable plug is seated on the opening at the ...	10/04/2011
7980330	Well tubular, retrievable joint strainer and method A debris collector or strainer assembly for a well string tubular coupling wherein one embodiment discloses a conical coil with one end fixed to a hub, a beveled collar surrounding and supporting the hub and secured thereto with shear pins, the conical coil is defor...	07/19/2011
7926595	Filter sub A downhole filter with a filter housing having a top filter and a bottom filter disposed therein. The filter housing can be in fluid communication with each filter. Each filter can be in fluid communication with a burst disk housing having a burst disk module and a ...	04/19/2011
7303029	Filter for a drill string A filter for a drill string comprises a perforated receptacle having an open end and a perforated end and first and second mounting surfaces are adjacent the open end. A transmission element is disposed within each of the first and second mounting surfaces. A capaci...	12/04/2007
7275594	Stab guide A tool string stab guide for axially aligning first tool string components with second tool string components is disclosed. The stab guide has a body with an axial length along a longitudinal axis with a first and a second section. The first section of the body adap...	10/02/2007
7270181	Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid pathway of t...	09/18/2007
7243742	Drill pipe screen A retrievable drill pipe screen is adapted for releasable connection within a drill pipe string. The screen has a planar support plate for connecting a perforated tubular screen body to a fish neck wherein the plane of the planar support plate is generally parallel ...	07/17/2007
7188688	Down-hole tool filter and method for protecting such tools from fluid entrained debris An improved apparatus for filtering down-hole drilling fluids, insertable at any point in the drill string, i.e.: tool joints or within instrument subs. The filter element is a disk insertable between the two threadably connected ends of any two lengths of the drill...	03/13/2007
7188687	Downhole filter A downhole filter comprises a tubular member having a wall defining a plurality of openings. The openings have an outer width less than an inner width. The parts of the opening defining the smaller width are defined by radially outer parts of the openings, such that...	03/13/2007
7165633	Drilling fluid filter A drilling fluid filter for placement within a bore wall of a tubular drill string component comprises a perforated receptacle with an open end and a closed end. A hanger for engagement with the bore wall is mounted at the open end of the perforated receptacle. A ma...	01/23/2007
7159660	Hydrajet perforation and fracturing tool Methods and apparatus for fracturing a subterranean formation which use a fracturing tool. The fracturing tool includes a hydrajet tool, with at least one fluid jet and at least one fracturing port extending through the liner. The fracturing tool further includes a ...	01/09/2007
7108083	Apparatus and method for completing an interval of a wellbore while drilling An apparatus and method for completing an interval of a wellbore while drilling comprises a drill string (52) having a drill bit (30) mounted on the lower end thereof. A completion assembly (50) is positioned around a section of the drill string...	09/19/2006
6923262	Alternate path auger screen A gravel pack screen assembly has one or more hollow flight augers that a continuous or segmented with multiple upwardly oriented gravel entrances and multiple downwardly oriented gravel exits. The gravel passes through the auger and around any bridge. The auger hel...	08/02/2005
6799645	Method and apparatus for drilling and completing a well with an expandable sand control system A system for controlling sand has an expandable screen an an inner string to isolate the sand screen allowing for drilling fluids to be circulated to the bottom of the drilling assembly, before returning up the annulus in normal fashion. Both ends of the expandable ...	10/05/2004
6719050	Method and apparatus for removing solid material from a well using a rotary pump A tool for removing solid particles from a well after sand fracturing, drilling, etc. The tool includes a flapper valve assembly above a drill bit, a sand screen, and a screw pump. Fluid in the well, with the solid particles therein, is pumped into the tool by rotat...	04/13/2004
6715570	Two stage downhole drilling fluid filter A two stage filter for drilling fluid using downhole tools filters solid materials from the drilling fluid and has a first, outer filter section and a second, inner filter section. A portion of the drilling fluid flowing through the first section is received by the ...	04/06/2004
6598685	Drilling fluid screen and method An apparatus for filtering a drilling fluid. The apparatus comprises a cylindrical flange member having a first and second passage and a cylindrical sleeve having an internal fishing neck. An attachment pin attaches the flange member to the cylindrical sl...	07/29/2003
6431292	Device for drilling and draining holes in soil or rock The invention relates to a device (1) for the drilling, notably by percussion or rotary-percussion drilling, and draining of holes in soil or rock. A drill bit (2, 3) mounted on a drill rod (4) creates a bore hole and a jacket tube (6) is coupled to the d...	08/13/2002
6207114	Reactive material placement technique for groundwater treatment The invention provides a permeable treatment wall comprising one or more high-permeability columns, as well as a methods for preparing such a permeable treatment wall....	03/27/2001
5372208	Tube section having slots for sampling A pair of elongated cylindrical members are constructed with first and second collars extending axially beyond their adjoining ends. The first and second collars have adjoining indentations and projections at their end edges which are adapted to interlock...	12/13/1994
5123209	Earth engineering apparatus and method The apparatus includes a shelf-like bracket which mounts to the exposed foundation of a building or other structure. The portion of the bracket which fits underneath the foundation is adjustable to permit secure fitting. The bracket includes a vertically ...	06/23/1992
5097914	Method and device for producing unadulterated water samples in drilling a well A method and device is used for producing uncontaminated water samples when drilling a well, using a hollow bar for transporting drilling fluid whose conduits consist of nonperforated tubes and at least one perforated tube; the water sample is pumped thro...	03/24/1992
4750571	Screen placement method and apparatus A screen placement apparatus and system wherein the apparatus includes a motor for providing rotational torque to an auger received within a ground screen and a disposable cutting tip having a cutting diameter equal to or greater than the outer diameter o...	06/14/1988
4693318	Sand control devices and method of installation thereof A well screen filter is formed with inner and outer concentric screens defining an annular filtering space filled with filtrating medium. A lower perforated plate supporting the filtrating materials has passages allowing transit of fine particles entraine...	09/15/1987
4681163	Sand control system A Wellbore sand control and filtration system, method, and apparatus for controlling formation sands and for preventing the influx of formation sands into the wellbore, into the production string, and into the produced fluids, the system including introdu...	07/21/1987
4649996	Double walled screen-filter with perforated joints A well screen-filter includes a pair of substantially spaced concentric screens defining an annular filtrating space therebetween, connected with perforated joint(s) closing the lower end of the filtrating space. The annular space is filled with filtratin...	03/17/1987
4583594	Double walled screen-filter with perforated joints A well screen-filter includes a pair of substantially spaced concentric screens defining an annular filtrating space therebetween, connected with perforated joint(s) closing the lower end of the filtrating space. The annular space is filled with filtratin...	04/22/1986
4526230	Double walled screen-filter with perforated joints A well screen-filter includes a pair of substantially spaced concentric screens defining an annular filtering space therebetween, connected with perforated joint(s) closing the lower end of the filtrating space. The annular space is filled with filtrating...	07/02/1985
4495073	Retrievable screen device for drill pipe and the like A mud screen for installation between any two selected ends of interconnected pipes, such as a drill pipe string, comprises a supporting collar anchored in the selected threaded connection of the drill pipe string and a screen support mounted on such coll...	01/22/1985
4429755	Drill with polycrystalline diamond drill blanks for soft, medium-hard and hard formations Drill bit for drilling bore holes in earth formations, the bit's cutting face provided with cutter preforms composed of polycrystalline diamonds on a tungsten carbide substrate mounted in sets from the center of the bit's face to its periphery. The first ...	02/07/1984
4368785	Well point and method of driving same Several embodiments of a well point are disclosed which include a resilient member that elongates each time an anvil surface near the conical tip of the well point is impacted by a drive rod. The drive rod is repeatedly raised and dropped to force the wel...	01/18/1983
4363366	Screened hollow stem auger for use in well drilling and testing process A vertically oriented screened hollow stem auger element for use in the simultaneous drilling and testing of wells so as to detect and monitor the existence of hazardous and toxic waste at subsurface levels. The screened hollow stem auger comprises an elo...	12/14/1982
4074779	Backwashing system for slurry pick-up used in hydraulic borehole mining devices 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 th...	02/21/1978
3968847	Wellpoint jetting head A wellpoint jetting head having a plurality of spade-like teeth annularly positioned around the forward end of the head and projecting longitudinally therefrom for dislodging and chopping of the soil during hydrostatic jetting in combination with a tiltin...	07/13/1976
3965685	Method for lowering ground water A pre-packed well point is provided having a central tube perforated only at the bottom end thereof. Coaxial with the inner tube is an outer screen and the inner and outer tubes are joined by suitable top and bottom end caps. Packed between the outer scre...	06/29/1976

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Class 175/314 - WITH WELL-TYPE SCREEN