Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
11/2005
11/09/2005EP1131535B1 Method and system for accessing subterranean deposits from the surface
11/09/2005CN1695045A Impeller for data acquisition in a flow
11/09/2005CN1693893A Method for determining properties of formation fluids
11/09/2005CN1693659A Device for measuring multiphase fluid of water, sand and air in air well drilling and its method
11/09/2005CN1693658A Measuring method of under well oil, gas and water three-phase flow and its device
11/09/2005CN1226589C Three dimensional collinear measuring method for drillhole inclination survey and axial deformation
11/09/2005CN1226341C Ethylene copolymer composition
11/08/2005US6963290 Data recovery for pulse telemetry using pulse position modulation
11/08/2005US6963201 Flux plane locating in an underground drilling system
11/08/2005CA2485840C Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
11/08/2005CA2328115C Well-bottom gas separator
11/08/2005CA2318563C Water soluble invert emulsions
11/03/2005WO2005103636A1 A method and apparatus for a high resolution downhole spectrometer
11/03/2005WO2005103501A1 Ejector multifunctional formation tester for horizontal wells and operation method thereof
11/03/2005WO2005103500A1 Method for operating a formation and device for carrying out said method tester
11/03/2005WO2005103449A1 Downhole light generating systems and methods of use
11/03/2005WO2005103448A2 Belt load distribution device
11/03/2005WO2005103437A1 Optical fiber equipped tubing and methods of making and using
11/03/2005WO2005103434A1 Elongated coil assembly for electromagnetic borehole surveying
11/03/2005WO2005071224A3 Measuring device and drilling device for deep drillings
11/03/2005WO2005057242A3 Magnetometers for measurement-while-drilling applications
11/03/2005WO2005048664B1 High temperature circuits
11/03/2005US20050246104 Method for management of multiple wells in a reservoir
11/03/2005US20050244017 Transducers coated with anechoic material for use in down hole communications
11/03/2005US20050242818 Bore location system
11/03/2005US20050242807 Method for determining properties of formation fluids
11/03/2005US20050241859 Bedrock drilling and excavating apparatus
11/03/2005US20050241855 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
11/03/2005US20050241835 Self-activating downhole tool
11/03/2005US20050241825 Downhole tool with navigation system
11/03/2005US20050241824 Methods of servicing a well bore using self-activating downhole tool
11/03/2005CA2779594A1 Method and system for monitoring of fluid-filled domains in a medium based on interface waves propagating along their surfaces
11/03/2005CA2779579A1 Method and system for monitoring of fluid-filled domains in a medium based on interface waves propagating along their surfaces
11/03/2005CA2779567A1 Method and system for monitoring of fluid-filled domains in a medium based on interface waves propagating along their surfaces
11/03/2005CA2562019A1 Optical fiber equipped tubing and methods of making and using
11/02/2005CN2737947Y Pile hole diameter detecting instrument
11/02/2005CN2737946Y Plug type pressure meter
11/02/2005CN2737945Y Pulse neutron well logging instrument capable of synchronous making carbon-oxygen ratio and PNN well logging
11/02/2005CN2737944Y Storing underwell electronic tester
11/02/2005CN2737943Y Detector for low-energy gamma source fluid density well logging instrument
11/02/2005CN2737942Y Pumping unit well remote-measuring device
11/02/2005CN1690729A Method and apparatus for lwd shear velocity measurement
11/02/2005CN1690359A Method and apparatus and program storage device for front tracking in hydraulic fracturing simulators
11/01/2005US6959763 Method and apparatus for integrated horizontal selective testing of wells
11/01/2005US6959609 Inferential densometer and mass flowmeter
11/01/2005US6959604 Apparatus and method having an optical fiber disposed circumferentially around the pipe for measuring unsteady pressure within a pipe
11/01/2005CA2300029C Combined electric field telemetry and formation evaluation method and apparatus
10/2005
10/30/2005CA2500629A1 Method for determining properties of formation fluids
10/27/2005WO2005101060A2 Method of managing multiple wells in a reservoir
10/27/2005WO2005100978A1 Apparatus and methods for acoustically determining fluid properties while sampling
10/27/2005WO2005100916A1 Measuring borehole survey tool orientation using microgyros
10/27/2005WO2005100747A2 Dynamic logging speed
10/27/2005WO2005100733A1 A component used in the formation, construction, repair and production phase of a well bore and a method for identifying same
10/27/2005WO2005045174A3 Gravel pack completion with fiber optic monitoring
10/27/2005WO2005031913A3 Antenna system
10/27/2005US20050240351 Method for determining a stuck point for pipe, and free point logging tool
10/27/2005US20050240350 Method for computation of differential azimuth from spaced-apart gravity component measurements
10/27/2005US20050237062 Flux plane locating in an underground drilling system
10/27/2005US20050236186 Boring tool control using remote locator
10/27/2005US20050236185 Mapping tool for tracking and/or guiding an underground boring tool
10/27/2005US20050236161 Optical fiber equipped tubing and methods of making and using
10/27/2005US20050236152 Method and apparatus and program storage device for front tracking in hydraulic fracturing simulators
10/27/2005CA2562086A1 Dynamic logging speed
10/27/2005CA2560100A1 Apparatus and methods for acoustically determining fluid properties while sampling
10/27/2005CA2558797A1 Measuring borehole survey tool orientation using microgyros
10/27/2005CA2505292A1 Method for computation of differential azimuth from spaced-apart gravity component measurements
10/26/2005EP1588278A2 Digital pressure derivative method and program storage device
10/26/2005EP1588018A1 Data transmission system for a downhole component
10/26/2005EP1588015A2 Apparatus and methods for drilling a wellbore using casing
10/26/2005EP1234102B1 Flow identification system
10/26/2005CN2736532Y Shale membrane efficiency determining instrument
10/26/2005CN1688794A A measuring sonde for a hydrocarbon well
10/26/2005CN1688793A Well control using pressure while drilling measurements
10/26/2005CN1687562A Combined type sensor devices and quantitative degassing apparatus
10/26/2005CN1224775C Apparatus for determining fluid contact level in formation
10/26/2005CA2505318A1 Method and apparatus and program storage device for front tracking in hydraulic fracturing simulators
10/25/2005US6959140 Light path
10/25/2005US6958704 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
10/25/2005US6958703 Drill string enabling information to be transmitted
10/25/2005US6957708 Electrical imaging in conductive and non-conductive mud
10/25/2005US6957700 Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties
10/25/2005US6957580 System and method for measurements of depth and velocity of instrumentation within a wellbore
10/25/2005US6957577 Down-hole pressure monitoring system
10/25/2005US6957576 Subterranean well pressure and temperature measurement
10/25/2005US6957574 Well integrity monitoring system
10/25/2005US6957572 Apparatus and methods for measuring mud slowness in a borehole
10/25/2005US6957499 Depthometer
10/25/2005CA2303983C Method and apparatus for controlling the liquid level in a well
10/25/2005CA2272044C Drillpipe structures to accommodate downhole testing
10/25/2005CA2143892C Method and system for real-time monitoring of earth formation fracture movement
10/20/2005US20050234647 Enhanced measurement of azimuthal dependence of subterranean parameters
10/20/2005US20050231383 Intelligent efficient servo-actuator for a downhole pulser
10/20/2005US20050230149 On-Bit, Analog Multiplexer for Transmission of Multi-Channel Drilling Information
10/20/2005US20050230122 Setting Tool for Hydraulically Actuated Devices
10/20/2005US20050230117 Method of treating oil and gas wells
10/20/2005US20050230110 Apparatus identification systems and methods
10/20/2005US20050230109 Apparatus identification systems and methods
10/20/2005US20050230108 Liner top test packer
10/20/2005US20050230098 Energized slip ring assembly
10/20/2005US20050229718 Impeller for data acquisition in a flow
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