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)
07/2010
07/22/2010WO2010083386A2 Evanescent wave downhole fiber optic spectrometer
07/22/2010WO2010083261A2 Directional drilling control devices and methods
07/22/2010WO2010083180A2 Attenuation of unwanted acoustic signals by semblance criterion modification
07/22/2010WO2010082975A1 System and method for completion optimization
07/22/2010WO2010062635A3 Methods and apparatus for planning and dynamically updating sampling operations while drilling in a subterranean formation
07/22/2010WO2010060014A3 Non-azimuthal and azimuthal formation evaluation measurement in a slowly rotating housing
07/22/2010WO2010048056A3 Externally mounted band antennae requiring minimal metal cutting on drillstring reduction of mechanical stresses
07/22/2010US20100181994 Method and device for determining the location of a rod fixing point
07/22/2010US20100181067 Wireless power and telemetry transmission between connections of well completions
07/22/2010US20100181065 Fluid Loss Additive and Breaking Agent
07/22/2010DE102009005330A1 Turbine zum Antreiben eines Generators in einem Bohrstrang Turbine for driving a generator in a drill string
07/22/2010DE102008063940A1 Device for generating pressure pulses for transmitting information in flushing canal of drill pipe, has axially running housing, in which generator is arranged, where generator comprises storage unit, clutch and bearing of impeller shaft
07/22/2010DE102008052510B3 Verfahren zum Bestimmen des Verschleißes eines mit Kräften belasteten Gestänges einer Erdarbeitsvorrichtung A method for determining the wear of a loaded with forces the linkage of a trench-work
07/22/2010CA2750415A1 Attenuation of unwanted acoustic signals by semblance criterion modification
07/22/2010CA2749284A1 Estimating petrophysical parameters and invasion profile using joint induction and pressure data inversion approach
07/22/2010CA2749275A1 Directional drilling control devices and methods
07/21/2010EP2208039A2 Method and system for registering and measuring leaks and flows
07/21/2010CN201531266U Wireless transmission system of sensor
07/21/2010CN201531265U Device for measuring depth and inclined angle of blast hole for mining
07/21/2010CN201531264U Novel turbine flow transducer
07/21/2010CN201531246U Multi-functional tool in underground oil pipe
07/21/2010CN201531231U Multiparameter well-flushing tester
07/21/2010CN101783714A Method and device for acquiring transmission data
07/21/2010CN101781986A Method and device for transmitting and analyzing numerical flow of curve data in logging system
07/21/2010CN101781985A Novel pressure test device
07/21/2010CN101781984A Drilling strata pressure test method and device thereof
07/21/2010CN101781983A Method used for gas drilling drillstem test
07/21/2010CA2690390A1 Wired pipe signal transmission testing apparatus and method
07/20/2010US7759943 Subsurface electromagnetic measurements using cross-magnetic dipoles
07/20/2010US7759824 System and method for detecting an underground object using magnetic field sensing
07/20/2010US7758734 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
07/20/2010US7757760 System and method for real-time management of formation fluid sampling with a guarded probe
07/20/2010US7757755 System and method for measuring an orientation of a downhole tool
07/20/2010US7757562 Technique and apparatus for detecting and monitoring internal defect conditions of mud pumps
07/20/2010US7757552 Downhole tool sensor system and method
07/15/2010WO2010080355A2 Improved caliper logging using circumferentially spaced and/or angled transducer elements
07/15/2010WO2010079379A1 Drillstring dynamics
07/15/2010WO2010079327A1 Pressure management system for well casing annuli
07/15/2010WO2010079320A1 Method and apparatus for in-situ wellbore measurements
07/15/2010WO2010057070A3 Method of deep resistivity transient measurment while drilling
07/15/2010WO2010057055A3 Downhole instrument calibration during formation survey
07/15/2010US20100177310 Evanescent wave downhole fiber optic spectrometer
07/15/2010US20100175923 Orientation sensor for downhole tool
07/15/2010US20100175890 Split-coil, redundant annular coupler for wired downhole telemetry
07/15/2010DE102009004104A1 Gasaktivitätsbestimmung in Böden Gas activity determination in soils
07/15/2010CA2748857A1 Drillstring dynamics
07/15/2010CA2748658A1 Pressure management system for well casing annuli
07/15/2010CA2748332A1 Method and apparatus for in-situ wellbore measurements
07/14/2010EP2206881A2 Determination of gas activity in soil
07/14/2010EP2205829A2 Technique and apparatus to perform a leak off test in a well
07/14/2010EP2205828A2 Method and device for in situ determination of the operating states of driven machines
07/14/2010EP2205813A2 Method and device for testing the coating of a pipeline while laying the pipeline in a liquid-filled borehole
07/14/2010CN201526315U Drilling parameter acquisition device using acoustic wave for transmission through drill rod
07/14/2010CN201526314U Logging cable multiplexing conversion device
07/14/2010CN201526313U Intelligentized temperature measuring instrument for coal mine
07/14/2010CN201526312U Automatic pressure testing device for operation well
07/14/2010CN201526311U Tank level slurry proportion display
07/14/2010CN201526310U Well cementation casing-cement sheath indoor analog manufacturer
07/14/2010CN201526309U Underground hydrological observation hole
07/14/2010CN201526308U Novel interface of umbrella type flow meter
07/14/2010CN101776509A Pressure resistance detecting device for petroleum underground tool
07/14/2010CN101775980A Quick drainage and hole sealing gas parameter testing system
07/14/2010CN101775979A Simplex communication instrument for oil extraction
07/14/2010CN101230854B Multi-mode control method and apparatus for electrically controlling hydraulic oil pump by hydraulic drawworks
07/13/2010US7753118 Method and tool for evaluating fluid dynamic properties of a cement annulus surrounding a casing
07/13/2010US7753117 Tool and method for evaluating fluid dynamic properties of a cement annulus surrounding a casing
07/13/2010US7752906 Downhole measurement of formation characteristics while drilling
07/13/2010CA2629835C Method and apparatus for mud pulse telemetry
07/13/2010CA2570935C A method and apparatus for determining a geophysical characteristic of a borehole
07/13/2010CA2562339C A component used in the formation, construction, repair and production phase of a well bore and a method for identifying same
07/13/2010CA2545910C Drilling fluid pressure pulse detection using a differential transducer
07/13/2010CA2504084C Setting tool for hydraulically actuated devices
07/12/2010CA2689819A1 Systems and methods for guiding the drilling of a horizontal well
07/12/2010CA2689815A1 Method and system for precise drilling guidance of twin wells
07/08/2010WO2010078577A2 Processing time series data embedded in high noise
07/08/2010WO2010078537A1 Systems and methods for providing electrical transmission in downhole tools
07/08/2010WO2010078389A2 Method and apparatus for increasing the efficiency of a fluorescence measurement cell
07/08/2010WO2010078350A1 Mobile platform for monitoring a wellsite
07/08/2010WO2010078253A1 Method and apparatus for real time oil based mud contamination monitoring
07/08/2010WO2010077868A1 Hydraulic signature tester
07/08/2010WO2010076281A2 Method for monitoring deformation of well equipment
07/08/2010WO2010075985A1 A compact wireless transceiver
07/08/2010WO2010075971A1 Method and system for transferring data from a device to a receiving unit
07/08/2010WO2010048411A3 Distributed measurement of mud temperature
07/08/2010WO2010048115A3 Methods and apparatuses for data collection and communication in drillstring components
07/08/2010WO2010046099A8 Method for determining the wear of a force-loaded linkage of an earthwork device
07/08/2010US20100172210 Wellbore telemetry and noise cancellation systems and methods for the same
07/08/2010US20100171638 Wellbore telemetry and noise cancellation systems and methods for the same
07/08/2010US20100170683 Gas activity analysis in the ground
07/08/2010US20100170673 System and method for downhole blowout prevention
07/08/2010DE102008056089A1 Method for measuring state variable e.g. temperature, of oil pipeline in offshore-area of oil and gas pumping station, involves using electrically operated measuring devices, and diverging supply energy from electricity provided to pipeline
07/08/2010CA2750905A1 Method for monitoring deformation of well equipment
07/08/2010CA2750200A1 Processing time series data embedded in high noise
07/08/2010CA2748487A1 Mobile platform for monitoring a wellsite
07/08/2010CA2748366A1 Method and apparatus for real time oil based mud contamination monitoring
07/07/2010EP2204530A1 A compact wireless transceiver
07/07/2010EP2203623A1 Orientation sensor for downhole tool
07/07/2010CN201521293U Wireless while-drilling measuring device integrated with orientation and natural gamma ray
07/07/2010CN201521292U Self-checking sealing instrument of water injection well
07/07/2010CN201521291U Underground distributed temperature sensor
1 ... 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 ... 314