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)
02/2014
02/26/2014CN203452662U Horizontal well water exploration tubular column adopting segmented setting type well mouth flow method
02/26/2014CN103608545A System, method, and computer program for predicting borehole geometry
02/26/2014CN103607397A Shallow water testing device for underwater production facilities
02/26/2014CN103603658A Oil production experimental device capable of simulating reservoir pressure supply
02/26/2014CN103603655A Tracer for monitoring multistage fracturing flow-back fluid and monitoring method
02/26/2014CN103603654A Rotating magnetic field ranging guidance simulation test bed for SAGD technology
02/26/2014CN103603653A Method and device for measuring inclination of drilled hole
02/26/2014CN103603652A While-drilling packing water injection test device for coal cracks
02/26/2014CN103603651A Device and method for testing stability of coal seam gas extraction drilled hole
02/26/2014CN103603650A Transient electromagnetic logging instrument
02/26/2014CN103603649A Oil gas throttling, heat-preserving and separation metering integrated equipment
02/26/2014CN102418517B Method for comprehensively detecting drilling depth travel of fully hydraulic drilling machine for coal mine
02/26/2014CN102061908B Axial vibration damper applicable to measuring instrument while drilling
02/26/2014CN101975059B Mark-guide underground operation process
02/25/2014US8660595 Communication arrangement for transmission of communication signals along a pipe line
02/25/2014US8657035 Systems and methods for providing wireless power transmissions and tuning a transmission frequency
02/25/2014US8656995 Detecting and correcting unintended fluid flow between subterranean zones
02/25/2014US8656994 Method for determination of fluid influx profile and near-wellbore area parameters
02/25/2014US8656993 Measuring gas losses at a rig surface circulation system
02/25/2014US8656770 Electromagnetically heated thermal flowmeter for wellbore fluids
02/25/2014CA2532436C System and methods of deriving fluid properties of downhole fluids and uncertainty thereof
02/24/2014CA2824208A1 Patch microseismic array and method
02/20/2014WO2014028834A1 Wide frequency range modeling of electromagnetic heating for heavy oil recovery
02/20/2014WO2014028814A1 System and method for forming a bore in a workpiece
02/20/2014WO2014028686A1 Method for forming instrumented cutting elements of an earth-boring drilling tool
02/20/2014WO2014028685A1 Apparatuses and methods for obtaining at-bit measurements for an earth boring drilling tool
02/20/2014WO2014028480A1 Downlink path finding for controlling the trajectory while drilling a well
02/20/2014WO2014028414A1 Cased-hole radial profiling of shear parameters from sonic measurements
02/20/2014US20140052376 Method for Cement Evaluation with Acoustic and Nuclear Density Logs
02/20/2014US20140048332 Sealed and hydrostatically lockable retrievable mwd landing system
02/20/2014US20140048254 System and Method of Assessing a Wellbore Servicing Fluid or a Component Thereof
02/20/2014US20140047915 Rotating Fluid Measurement Device and Method
02/20/2014DE102012016196A1 Pegelrohr und Verfahren zur Messung des Wasserstands in einem Bohrloch Level tube and method for measuring the water level in a well
02/20/2014DE102004043151B4 Verfahren und Vorrichtung zum Bestimmen der Geschwindigkeit und von Eigenschaften von strömenden Fluiden unter Verwendung von magnetischen Kernresonanzmessungen Method and apparatus for determining the velocity and of properties of flowing fluids using nuclear magnetic resonance measurements
02/19/2014EP2698499A1 Method and device producing and measuring a borehole
02/19/2014EP2697838A1 Electrical contacts to a ring transducer
02/19/2014EP2697475A1 Opening a conduit cemented in a well
02/19/2014EP2697472A1 Device for measuring and controlling on-line viscosity at high pressure
02/19/2014CN203445167U High-temperature corrosion-resistant battery housing for wireless inclinometer while drilling
02/19/2014CN203441482U Single-electrode power supply bottom-installation electrode system
02/19/2014CN203441481U Logging instrument
02/19/2014CN203441480U Ground interface box
02/19/2014CN203441479U Comprehensive borehole geological condition exploration device
02/19/2014CN203441478U System for acquiring downhole temperature and pressure
02/19/2014CN203441477U Multi-wheel linkage depth measuring device of continuous oil tube
02/19/2014CN203441476U Direction marker for inclined hole
02/19/2014CN203441475U Protection device for logging instrument
02/19/2014CN203441474U Inclination measuring tray
02/19/2014CN203441473U Logging instrument combined sealing structure
02/19/2014CN203441472U Comprehensive test and production optimization system for screw pump well
02/19/2014CN203441471U Oil well single well automatic oil gauging device
02/19/2014CN203441470U Simulation test well with replaceable inner shaft
02/19/2014CN203441469U Flow meter for speed measurement based on optical fiber laser
02/19/2014CN203441468U Tension detecting instrument for petroleum underground stratum fracture tubular column tool string
02/19/2014CN203441448U Sand-prevention effect evaluation device for horizontal well sieving pipe
02/19/2014CN203441437U Cable flusher
02/19/2014CN103591962A Positioning and orienting instrument optical fiber strap-down inertial measurement unit for coal industry
02/19/2014CN103590825A Transient electromagnetic well-logging probe detection system
02/19/2014CN103590820A Transient electromagnetic emission probe
02/19/2014CN103590819A Wireless low-power drill floor logging unit
02/19/2014CN103590818A Shaft interior temperature distribution semi-analytical determination method and device
02/19/2014CN103590817A Treatment method for abandoned oil and gas wells in coal mining area
02/19/2014CN103590816A Wheel type drilling depth measurement instrument and drilling depth measurement method
02/19/2014CN103590815A Two-shaft orientation measuring and calculating method
02/19/2014CN103590814A Probe and full-absorption damping device
02/19/2014CN103590813A Method, tubular column and device for testing dynamic reserves of two-layer commingled producing gas well
02/19/2014CN103590812A Calculating method, calculating device and determining method of gas well effusion volume
02/19/2014CN103590811A Experiment device and method for measuring large displacement well drill column clamping point
02/19/2014CN103590810A Power-adjustable emitting device used for transient electromagnetic logging
02/19/2014CN103590809A Transient electromagnetic well logging excitation method
02/19/2014CN103590808A Heat tracing ejector
02/19/2014CN103590807A Method for determining heavy oil thermal recovery steam chamber state
02/19/2014CN103590799A Three-dimensional fracturing design method for horizontal well in compact sandstone reservoir
02/19/2014CN103590768A Treatment method for abandoned uncased wells in coal mining area
02/19/2014CN103590753A Drilling tool for detecting temperature in drill hole in real time
02/19/2014CN103588801A Trace element well-to-well tracer agent use method
02/19/2014CN102231696B Method for packaging datagram message of measurement while drilling (WMD) system
02/19/2014CN102182442B Method for preparing radioisotope tracer
02/19/2014CN102094630B Portable angular difference measuring gauge
02/18/2014US8651187 Method and apparatus to treat well stimulation fluids in-situ
02/18/2014US8651183 Robotic exploration of unknown surfaces
02/18/2014CA2749767C A complex tool for well monitoring
02/18/2014CA2716077C Coiled tubing having a capillary window and method for making same
02/18/2014CA2563597C Direct measurement of brillouin frequency in distributed optical sensing systems
02/18/2014CA2563428C Downhole telemetry system for wired tubing
02/13/2014WO2014025354A1 Methods and systems for borehole image forward modeling of formation properties
02/13/2014WO2014025349A1 In-well piezoelectric devices to transmit signals
02/13/2014WO2014025339A1 Systems and methods for locating wellbore servicing tools within a wellbore
02/13/2014WO2014025335A1 Well cable management
02/13/2014WO2014023909A2 Simulation of insular karstification
02/13/2014WO2014023201A1 Analysis processing method and system for afterflow data in well test data
02/13/2014WO2014023111A1 Coal and gas burst risk parameter drilling and predicting integrated method
02/13/2014US20140041866 Systems and Methods for Locating Wellbore Servicing Tools Within a Wellbore
02/13/2014US20140041865 Methods and systems for providing a package of sensors to enhance subterranean operations
02/13/2014US20140041862 Use of Magnetic Liquids for Imaging and Mapping Porous Subterranean Formations
02/13/2014US20140041861 Hydraulic Position Indicator System
02/13/2014US20140041447 Method and device for producing and measuring a borehole
02/13/2014DE102010014415B4 Vorrichtung und Meßverfahren zur Messung einer unterirdischen Temperatur und Verwendung von Halbleitersensoren An apparatus and method for measurement of a subterranean temperature and use of semiconductor sensors
02/13/2014CA2821150A1 Method and device for producing and measuring a borehole
02/12/2014EP2694955A1 Pressure probe for detecting clathrates and the use thereof
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