| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 02/12/2013 | US8371399 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 02/12/2013 | US8371396 Communication connections for wired drill pipe joints |
| 02/12/2013 | US8371372 Installation of tubular strings with lines secured thereto in subterranean wells |
| 02/12/2013 | CA2483592C Method of detecting signals in acoustic drill string telemetry |
| 02/09/2013 | CA2776172A1 Flow management system and method |
| 02/08/2013 | CA2784726A1 Apparatus and method for maintaining consistent fluid velocity and homogeneity in a pipeline |
| 02/07/2013 | WO2013019554A2 Viscometer for downhole use |
| 02/07/2013 | WO2013019553A2 Precise borehole geometry and bha lateral motion based on real time caliper measurements |
| 02/07/2013 | WO2013019530A1 Downhole condition alert system for a drill operator |
| 02/07/2013 | WO2013019417A2 Systems and methods for implementing different modes of communication on a communication line between surface and downhole equipment |
| 02/07/2013 | WO2013019224A1 Method and apparatus to detect a conductive body |
| 02/07/2013 | WO2013019223A1 Apparatus and method of landing a well in a target zone |
| 02/07/2013 | WO2013019174A1 Method and system of correlating a measured log to a predicted log |
| 02/07/2013 | WO2012118807A3 Lateral well drilling apparatus and method |
| 02/07/2013 | WO2012116984A3 Tubular component for drill stem capable of being cabled, and method for mounting a cable in said component |
| 02/07/2013 | WO2012004000A3 Downhole inductive coupler assemblies |
| 02/07/2013 | WO2012003999A3 Inductive couplers for use in a downhole environment |
| 02/07/2013 | US20130032404 Pulsed-Electric Drilling Systems and Methods With Formation Evaluation and/or Bit Position Tracking |
| 02/07/2013 | US20130032403 Rechargeable Battery Controller |
| 02/07/2013 | US20130032339 Methods for Fluid Monitoring in a Subterranean Formation Using One or More Integrated Computational Elements |
| 02/07/2013 | US20130032338 Methods for Fluid Monitoring in a Subterranean Formation Using One or More Integrated Computational Elements |
| 02/07/2013 | US20130032336 Establishing communication between well pairs in oil sands by dilation with steam or water circulation at elevated pressures |
| 02/07/2013 | US20130032335 System and Method for Quantifying Stimulated Rock Quality in a Wellbore |
| 02/07/2013 | US20130032334 Methods for monitoring the formation and transport of a treatment fluid using opticoanalytical devices |
| 02/07/2013 | US20130031972 Methods for monitoring a water source using opticoanalytical devices |
| 02/07/2013 | US20130031971 Methods for monitoring fluids within or produced from a subterranean formation during fracturing operations using opticoanalytical devices |
| 02/07/2013 | US20130031970 Methods for monitoring the formation and transport of a fracturing fluid using opticoanalytical devices |
| 02/07/2013 | CA2842598A1 Apparatus and method of landing a well in a target zone |
| 02/07/2013 | CA2842158A1 Method and system of correlating a measured log to a predicted log |
| 02/07/2013 | CA2810196A1 Method and apparatus to detect a conductive body |
| 02/06/2013 | EP2554782A2 System and methods for pulsed flow pulsed electric drilling |
| 02/06/2013 | EP2554781A2 Cooled-fluid systems and methods for pulsed-electric drilling |
| 02/06/2013 | EP2554780A2 Pulsed electric drilling systems and methods with reverse circulation |
| 02/06/2013 | EP2554779A2 Pulsed-electric drilling systems and methods with formation evaluation and/or bit position tracking |
| 02/06/2013 | EP2553499A2 Gain-corrected measurements |
| 02/06/2013 | EP2553219A2 System and method for real time data transmission during well completions |
| 02/06/2013 | EP2553218A2 Method and apparatus for determining the nature of a material in a cavity between one inner metal wall and one outer metal wall |
| 02/06/2013 | EP2553212A1 Device for a plug construction for conducting well tests |
| 02/06/2013 | EP2553209A1 Method for maintaining wellbore pressure |
| 02/06/2013 | CN202718673U Visual physical simulation device for bottom-water reservoirs |
| 02/06/2013 | CN202718672U Packer experiment shaft based on high-temperature and high-pressure environment |
| 02/06/2013 | CN202718671U Physical simulation device for gas-cap reservoirs |
| 02/06/2013 | CN202718670U Remote control well-testing system downhole testing tool |
| 02/06/2013 | CN202718669U Drill pressure measuring short circuit |
| 02/06/2013 | CN202718668U Sounding gear of rotary drilling rig |
| 02/06/2013 | CN202718667U Vibration monitoring system of high-temperature and high-pressure high-flow speed pipeline |
| 02/06/2013 | CN202718656U Step-by-step deblocking and water plugging technique pipe of bridge plug |
| 02/06/2013 | CN202718646U Oil well coring tester |
| 02/06/2013 | CN102918228A Apparatus and methods for estimating tool inclination using bit-based gamma ray sensors |
| 02/06/2013 | CN102913239A Array sound-wave logger |
| 02/06/2013 | CN102913237A Measurement while drilling parameter and logging parameter integrated synchronous comprehensive treatment method |
| 02/06/2013 | CN102913236A Relay transceiver, relay receiving short joint and underground testing device |
| 02/06/2013 | CN102913235A Logging data transmitting system |
| 02/06/2013 | CN102913234A Tubular column pressure testing device |
| 02/06/2013 | CN102913233A Method for recognizing dominant flow channel based on zero dimension comparison plate |
| 02/06/2013 | CN102913232A Method for judging breakthrough position of carbon dioxide flooding |
| 02/06/2013 | CN102913231A Magnetic induction liquid level interface instrument |
| 02/06/2013 | CN102913230A Combination logging device |
| 02/06/2013 | CN102913229A Sealing joint body |
| 02/06/2013 | CN102913228A Production profile logging instrument for screw pump well |
| 02/06/2013 | CN102913225A Underground multi-phase flow gas-phase separating and measuring device |
| 02/06/2013 | CN102913169A Movable drilling inclinometer probe capturer and capturing method thereof |
| 02/06/2013 | CN101454537B Drill bit assembly with a probe |
| 02/05/2013 | US8365823 In-situ upgrading of heavy crude oil in a production well using radio frequency or microwave radiation and a catalyst |
| 02/05/2013 | US8365822 Interleaved arm system for logging a wellbore and method for using same |
| 02/05/2013 | US8365814 Pre-verification of perforation alignment |
| 01/31/2013 | WO2013016359A2 Automatic optimizing methods for reservoir testing |
| 01/31/2013 | WO2013016326A2 Detection of downhole vibrations using surface data from drilling rigs |
| 01/31/2013 | WO2013016282A2 Path tracking for directional drilling as applied to attitude hold and trajectory following |
| 01/31/2013 | WO2013016064A2 System and method for controlling and monitoring a drilling operation using refined solutions from a panistic inversion |
| 01/31/2013 | WO2013015965A2 Deployment mechanism for well logging devices |
| 01/31/2013 | WO2013015958A2 Method and system of displaying data associated with drilling a borehole |
| 01/31/2013 | WO2013015800A1 Downhole line tool assembly and method for use thereof |
| 01/31/2013 | WO2013013976A1 Subsea communication system |
| 01/31/2013 | WO2012174034A9 Methods and apparatus for determining downhole parameters |
| 01/31/2013 | WO2012158522A3 Separation system to separate phases of downhole fluids for individual analysis |
| 01/31/2013 | WO2012149375A3 Spring force nodal mounting method for resonator sensor |
| 01/31/2013 | WO2012118824A3 System for logging while running casing |
| 01/31/2013 | WO2012087892A3 Method for controlling the downhole temperature during fluid injection into oilfield wells |
| 01/31/2013 | WO2011128068A3 Communication system for transmitting information relating to drilling rods |
| 01/31/2013 | US20130027216 Communication system for transmitting information via drilling rods |
| 01/31/2013 | US20130025939 System and method for controlling and monitoring a drilling operation using refined solutions from a panistic inversion |
| 01/31/2013 | US20130025886 Shock Tolerant Heat Dissipating Electronics Package |
| 01/31/2013 | US20130025853 Single-well diagnostics and increased oil recovery by oil injection and sequential waterflooding |
| 01/31/2013 | US20130025852 Apparatus and system and method of measuring data in a well extending below surface |
| 01/31/2013 | US20130025851 Downhole condition alert system for a drill operator |
| 01/31/2013 | US20130025359 Viscometer for downhole use |
| 01/31/2013 | CA2842791A1 Automatic optimizing methods for reservoir testing |
| 01/31/2013 | CA2842161A1 Method and system of displaying data associated with drilling a borehole |
| 01/30/2013 | EP2551444A2 Permanent or removable positioning apparatus and method for downhole tool operations |
| 01/30/2013 | EP2550547A1 Apparatus for registration of photons and ionizing particles with simultaneous directional definition, for each photon or ionizing particle, of a point of origin in a fluid-filled conduit |
| 01/30/2013 | CN202707047U Natural gamma and well deviation position combination logging instrument |
| 01/30/2013 | CN202707046U Analog measurement test device of circumferential borehole electro-acoustic imaging detector |
| 01/30/2013 | CN202707045U Ground system of drilling-tool-over storage type logging instrument |
| 01/30/2013 | CN202707044U Well drilling real-time information wireless television transmitting device |
| 01/30/2013 | CN202707043U Water injection well location pressure measuring releasing overshot device |
| 01/30/2013 | CN202707042U Anti-freezing device of pressure gauge |
| 01/30/2013 | CN202707041U Differential pressure type underground water level measuring apparatus |
| 01/30/2013 | CN202707040U Underground tubular column depth checking device for oil field |
| 01/30/2013 | CN202707039U High-precision intelligent double-core well depth measuring device |