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)
12/2014
12/04/2014US20140354444 Channel impulse response identification and compensation
12/04/2014US20140354443 Methods and systems for detecting rfid tags in a borehole environment
12/04/2014US20140353032 Expandable apparatus and related methods
12/04/2014US20140352953 Integrated Computational Element Analysis of Production Fluid in Artificial Lift Operations
12/04/2014US20140352952 Methods of Using Enhanced Wellbore Electrical Cables
12/04/2014US20140352951 Fine control of casing pressure
12/04/2014US20140352949 Integrating rock ductility with fracture propagation mechanics for hydraulic fracture design
12/04/2014US20140352948 Apparatuses and Methods for Testing Wellbore Fluids
12/04/2014US20140352947 Stimulation method
12/04/2014US20140352422 Sensor pod housing assembly and apparatus
12/02/2014US8902704 Method and device for logging the fluid depth in a wellbore
12/02/2014US8902703 Downhole positioning system
12/02/2014US8902695 Apparatus and method for clock shift correction for measurement-while-drilling measurements
12/02/2014US8902078 Systems and methods for well monitoring
12/02/2014US8902077 Subsea communication system and technique
12/02/2014US8901501 Scintillation detection device with an encapsulated scintillator
12/02/2014US8899349 Methods for determining formation strength of a wellbore
12/02/2014US8899347 System and method of using a saver sub in a drilling system
12/02/2014US8899322 Autonomous downhole control methods and devices
12/02/2014US8899321 Method of distributing a viscosity reducing solvent to a set of wells
12/02/2014US8899320 Well perforating with determination of well characteristics
12/02/2014US8899106 Method for detecting structural stability of object area and apparatus for the same
12/02/2014US8899105 Slim capacitance sensor for downhole applications
11/2014
11/27/2014US20140350858 Enhanced resistivity measurement apparatus, methods, and systems
11/27/2014US20140347192 Connecting Fiber Optic Cables
11/27/2014US20140345948 Apparatuses and methods for determining temperature data of a component of an earth-boring drilling tool
11/27/2014US20140345947 Method for Minimizing Delays While Drilling Using a Magnetic Ranging Apparatus
11/27/2014US20140345946 Analysis of Geological Objects
11/25/2014US8895928 Compensated optical detection apparatus, systems, and methods
11/25/2014US8895484 Use of biphenyl, terphenyl, and fluorene sulphonic acid based tracers for monitoring streams of fluids
11/25/2014US8893822 Apparatus and methods for real time communication between drill bit and drilling assembly
11/25/2014US8893821 Apparatus and method for tool face control using pressure data
11/25/2014US8893808 Control systems and methods for centering a tool in a wellbore
11/25/2014US8893806 Exercising a well tool
11/25/2014US8893785 Location of downhole lines
11/25/2014US8893784 Traced chemicals and method to verify and control formulation composition
11/25/2014US8893783 Tubing conveyed multiple zone integrated intelligent well completion
11/25/2014US8893782 Fluid sensor and method of using same
11/25/2014US8893549 Sensor assembly and a method of sensing
11/25/2014US8893547 Acoustic transducers using quantum tunneling composite active elements
11/20/2014US20140343856 Borehole Fluid Effect Correction For Pulsed Neutron Porosity Measurements
11/20/2014US20140341755 Horizontal and vertical well fluid pumping system
11/20/2014US20140340991 Mud pulser with high speed, low power input hydraulic actuator
11/20/2014US20140340990 Method And Assembly For Determining Landing Of Logging Tools In A Wellbore
11/20/2014US20140340506 Downhole visualisation method
11/20/2014US20140340235 Time division multiplexing (tdm) and wavelength division multiplexing (wdm) fast-sweep interrogator
11/20/2014US20140340089 Magnetic sensing apparatus, systems, and methods
11/20/2014US20140338976 Extendable cutting tools for use in a wellbore
11/20/2014US20140338905 Method and apparatus for generating seismic pulses to map subterranean fractures
11/20/2014US20140338896 Determining Whether a Wellbore Sealing Operation Has Been Performed Correctly
11/20/2014US20140338895 Method for recovery of hydrocarbon fluid
11/20/2014US20140338886 Smart Drop-Off Tool and Hang-Off Tool for a Logging String
11/20/2014US20140338439 Method and apparatus for determining fluid flow characteristics
11/18/2014US8892412 Adjoint-based conditioning of process-based geologic models
11/18/2014US8892407 Robust well trajectory planning
11/18/2014US8892372 Estimating fluid levels in a progressing cavity pump system
11/18/2014US8891070 Flexible pipe system
11/18/2014US8890710 Method and system of an electromagnetic telemetry
11/18/2014US8887832 Apparatus and methods for corrosion protection of downhole tools
11/18/2014US8887803 Multi-interval wellbore treatment method
11/18/2014US8887799 Tattle-tale apparatus
11/13/2014US20140336937 Downhole mapping system
11/13/2014US20140333754 Down hole cuttings analysis
11/13/2014US20140333452 Inter-Tool Communication Flow Control in Toolbus System of Cable Telemetry
11/11/2014US8884778 Apparatus and methods for controlling and communicating with downhole devices
11/11/2014US8884624 Shielded antenna for a downhole logging tool
11/11/2014US8884215 Method and apparatus for analyzing composition of hydrocarbon and carbon dioxide gases liberated from drilling fluids
11/11/2014US8881843 Managed pressure and/or temperature drilling system and method
11/11/2014US8881833 Remotely controlled apparatus for downhole applications and methods of operation
11/11/2014US8881809 Wireless tag tracer method and apparatus
11/11/2014US8881807 Autonomous apparatus to restore and maintain well productivity and method of using the same
11/11/2014US8881414 Inclination measurement devices and methods of use
11/06/2014US20140330522 System and Method for Measuring Formation Properties
11/06/2014US20140327552 Surface Communication System for Communication with Downhole Wireless Modem Prior to Deployment
11/06/2014US20140327551 Oil port position sensing device
11/06/2014US20140326063 Virtual flowmeter for a well
11/04/2014US8880349 Mud pulse telemetry
11/04/2014US8880348 Radon migration of acoustic data
11/04/2014US8878688 Well downhole condition signalling
11/04/2014US8878126 Method for inspecting a subterranean tubular
11/04/2014US8877506 Methods and systems using encapsulated tracers and chemicals for reservoir interrogation and manipulation
11/04/2014US8875810 Hole enlargement drilling device and methods for using same
11/04/2014US8875808 Method and assembly for conveying well logging tools
11/04/2014US8875807 Optical power for self-propelled mineral mole
11/04/2014US8875806 Formation dip geo-steering method
11/04/2014US8875785 System and method for correcting downhole speed
11/04/2014US8875379 Method of manufacturing a fluid flow measuring device
10/2014
10/30/2014US20140321341 Subsea data communication system and method
10/30/2014US20140321240 Elastography for cement integrity inspection
10/30/2014US20140320301 Downhole structure sections
10/30/2014US20140318771 Formation Pressure Sensing System
10/30/2014US20140318770 Pressure integrity testing system
10/30/2014US20140318769 Systems and Methods for Surface Detection of Wellbore Projectiles
10/30/2014US20140318767 Method and Apparatus for Transmitting or Receiving Information Between A Downhole Equipment and Surface
10/30/2014US20140318760 System and Method for the Access of Subterranean Deposits
10/30/2014US20140318234 Well testing
10/30/2014US20140318233 Transmitter Housing and Method for Measuring a Fluid Pressure
10/28/2014US8874407 System for determination of downhole position
10/28/2014US8872670 Compliance telemetry
10/28/2014US8871694 Use of zeta potential modifiers to decrease the residual oil saturation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ... 314