Class 175/41 - Ray energy detection or measuring

Subclass of Class 175 - Boring or penetrating the earth
Definition: Subject matter comprising a step or means for detecting
No. of patents: 38
Last issue date: 04/01/2008

Number	Title	Issue Date
7350568	Logging a well A method for logging a well. Includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An apparatus for logging a well includes a drill bit and at least one arra...	04/01/2008
7347280	Establishing positions of locating field detectors and path mapping in underground boring tool applications Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground boring tool. In one aspect, an im...	03/25/2008
7331587	Wheelbarrow wheel guard A wheelbarrow including a wheel guard having tines with a reduced lateral width. The wheelbarrow has a frame assembly with two handle assemblies that are angled toward each other terminating in a forward yoke. The wheel guard has a bight, a first and second tine, ea...	02/19/2008
7253401	Spectral gamma ray logging-while-drilling system A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controll...	08/07/2007
7249968	Electrical connections for harsh conditions Apparatuses are provided which basically comprise a socket which has at least two contiguous passages formed therein which are adapted to receive exposed wire and/or insulated wire. Bonding materials and crimp joints, alone or in combination, are provided to further...	07/31/2007
7228898	Gravel pack completion with fluid loss control fiber optic wet connect A gravel pack completion with fluid loss control and fiber optic wet connect. In a described embodiment, a system for completing a subterranean well includes multiple assemblies installed in a wellbore. Each assembly has a fiber optic line. The fiber optic lines are...	06/12/2007
7219752	System and method for damping vibration in a drill string A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define...	05/22/2007
7219747	Providing a local response to a local condition in an oil well A method and apparatus for providing a local response to a local condition in an oil well are disclosed. A sensor is provided to detect a local condition in a drill string. A controllable element is provided to modulate energy in the drill string. A controller is co...	05/22/2007
7182151	Apparatus and method for horizontal drilling An apparatus and method for horizontally drilling for detecting subsurface features and avoiding such features during closed-loop control of an underground drilling machine. A horizontal drilling system includes a base machine capable of propelling a drill pipe rota...	02/27/2007
7178607	While drilling system and method A while drilling system and method for determining annular pressure while drilling is provided. The system is positioned in a drilling tool suspended from a drilling rig via a drill string. The system includes at least one drill collar, a while drilling tool and at ...	02/20/2007
7134493	Logging system for use in a wellbore A logging system that may be used in a wellbore formed in an earth. A tubular conduit extends from surface into the wellbore and contains a body of wellbore fluid. A logging tool string may be passed from a position within the conduit to a position outside the condu...	11/14/2006
7093680	Subsurface signal transmitting apparatus An insulator for a subsurface signal transmitting apparatus. The insulator includes a housing, a mandrel axially disposed inside the housing, a first insulating material disposed between the housing and the mandrel, a first sleeve formed of a second insulating mater...	08/22/2006
7080699	Wellbore communication system A gap collar for an electromagnetic communication unit of a downhole tool positioned in a wellbore is provided. The downhole tool communicates with a surface unit via an electromagnetic field generated by the electromagnetic communication unit. The gap collar includ...	07/25/2006
7077200	Downhole light system and methods of use A light generating system for use in a wellbore comprising a light generating transducer in the wellbore, the light generating transducer adapted to transform a physical state of a parameter in the wellbore to optical energy; recording equipment sensitive to optical...	07/18/2006
7059404	Variable intensity memory gravel pack imaging apparatus and method An apparatus and method are provided for varying an operating parameter for a nuclear gamma ray tool for evaluating the integrity of gravel packing. The gamma ray outpat intensity and area of investigation are altered by changing a source housing geometry and the ma...	06/13/2006
7021403	Method of establishing positions of locating field detectors and path mapping in underground boring tool applications Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground boring tool. In one aspect, an im...	04/04/2006
6942043	Modular design for LWD/MWD collars A modular system for packaging of sensors and related electronics for an MWD system. A drill collar housing is provided with one or more cavities for receiving sensor modules that are adapted to sense one or more wellbore conditions. The sensor modules are removable...	09/13/2005
6944548	Formation evaluation through azimuthal measurements A method for formation logging includes acquiring measurements of neutron-induced signals having azimuthal information using a neutron tool; processing the measurements into a plurality of azimuthal sector data for each acquisition interval; and deriving a selected ...	09/13/2005
6907944	Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool A tool is presented for making density measurements of a formation surrounding a wellbore, comprising a collar housing in a drill string. The housing has at least one first section with a first outer diameter, and at least one sensing section with a second outer dia...	06/21/2005
6877559	Retrieving a sample of formation fluid in as cased hole A method for retrieving a formation fluid sample through a cased borehole utilizing a sampling tool. Sampling tool straddle packers are set about a first set of perforations and annular fluid is drained from the isolated zone, through a central conduit in the tool a...	04/12/2005
6868038	Seismic method of performing the time picking step The present invention provides a method of performing the time picking step in a VSP (vertical seismic profile) survey. In a preferred embodiment of the invention the time picking step is carried out on a combined three-component amplitude of the received seismic en...	03/15/2005
6814162	One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices A drill bit, comprising a bit body, a sensor disposed in the bit body, a single journal removably mounted to the bit body, and a roller cone rotatably mounted to the single journal. ...	11/09/2004
6791469	Method of drilling in response to looking ahead of the bit A method for improving ROP and reducing hazards in drilling subterranean wells by using an acoustical system 15 to look ahead of the drill bit 14, detects and analyzes geologic features ahead of the bit 14 which may be qualified as drilling haza...	09/14/2004
6648083	Method and apparatus for measuring mud and formation properties downhole A method is disclosed for determining a characteristic of a mud mixture surrounding a drilling tool within a borehole in which a drilling tool is received. The method includes turning the tool in the borehole. Energy is applied into the borehole from an e...	11/18/2003
6516663	Downhole electromagnetic logging into place tool Apparatus and method for accurately logging a drill-stem test tool into place as the DST tool is conveyed by drill pipe or tubing to the desired location are provided. One aspect of the invention provides an apparatus for logging into place a drill stem t...	02/11/2003
6474152	Methods and apparatus for optically measuring fluid compressibility downhole The compressibility of a formation hydrocarbon sample is determined downhole by using a borehole tool to obtain the sample downhole, and, at two different pressures, subjecting the sample to near infrared illumination and conducting spectral absorption me...	11/05/2002
6242268	Homogeneous fluorassay methods employing fluorescent background rejection and water-soluble rare earth metal chelates Homogeneous assays for determining quantitatively the extent of a specific binding reaction can be carried out effectively on very dilute solutions using measurements of fluorescence if a fluorescence measurement scheme that is capable of rejecting short-...	06/05/2001
5842528	Method of drilling and completing wells A method and apparatus for drilling and completing a bore hole is disclosed. Generally, the method comprises the steps of positioning a workstring in the well, with the workstring having attached thereto a bottom hole assembly. The bottom hole assembly ma...	12/01/1998
5667023	Method and apparatus for drilling and completing wells A method and apparatus for drilling and completing a bore hole are disclosed. The method comprises positioning a work string in the well, with a bottom hole assembly attached. The bottom hole assembly can include a drill bit, a drilling motor, orientation...	09/16/1997
5251708	Modular connector for measurement-while-drilling tool A downhole tool for use in measurement-while-drilling applications includes modular ring connectors on opposed ends thereof with the ring connectors being interconnected by a single bus for delivering both power and ground....	10/12/1993
5163521	System for drilling deviated boreholes Improved techniques are provided for drilling a deviated borehole through earth formations utilizing a rotary bit powered by a drill motor, and for obtaining information regarding the borehole or earth formations while drilling. An inclinometer is positio...	11/17/1992
4691772	Process for obtaining permeability logs using radioactive drilling mud additives A method for determining the permeability profile of an uncased borehole penetrating a subterranean formation by a natural gamma ray well logging technique in which particles containing gamma ray emitting nuclides are added to a thixotropic drilling mud u...	09/08/1987
4601353	Method for drilling drainholes within producing zone A method for drilling a drainhole through a subsurface formation without intersecting upper or lower boundaries thereof in which a directionally sensitive measurement while drilling device carried on the drainhole string is used to measure a formation pro...	07/22/1986
4297699	Radar drill guidance system The present invention comprises a short-pulse radar guidance tool which determines borehole-to-roof and borehole-to-floor distances along a coal seam by measuring the travel times of electromagnetic pulses transmitted from the tool and reflected back to a...	10/27/1981
4262964	System for detecting interfaces between mineral seams and the surrounding earth formations The present invention contemplates a system for detecting an interface between a mineral seam and the surrounding earth formation utilizing a radiation source and a radiation receiver mounted on a miner having a positionable cutter assembly. As the miner ...	04/21/1981
4224988	Device for and method of sensing conditions in a well bore A device for and method of sensing conditions in a well bore by positioning a radioactive source adjacent the surface of the well bore for emitting a radioactive signal across the well bore. A means for detecting the radioactive signal is positioned oppos...	09/30/1980
4118623	Continuous quality control of mined hard and soft coals A method is provided for determining the shale content of mined coal by monitoring the thorium content of the coal. Thorium content and ash content are shown to be related whereby a direct reading of the thorium will be indicative of the shale content of ...	10/03/1978
4115688	Mining and drilling control of distance to the coal-shale interface - thorium measurement by gamma spectrometry A method for determining the distance from a given point in a coal seam to shale by sensing the thorium radiation from shale layers positioned about the coal seam. The invention is useful for maintaining a drill in a desired position in a coal seam and gu...	09/19/1978

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Class 175/41 - Ray energy detection or measuring