E21B 47 - Survey of boreholes or wells

Patents for E21B 47 - Survey of boreholes or wells (31,352)
11/2011
11/17/2011	WO2011070413A3 Processing of geological data
11/17/2011	WO2011043981A3 System and method for downhole communication
11/17/2011	WO2010079320A8 Method and apparatus for in-situ wellbore measurements
11/17/2011	US20110282583 Systems and methods for well positioning using a transverse rotating magnetic source
11/17/2011	US20110280105 Downhole Turbine Communication
11/17/2011	US20110280104 Dual top drive systems and methods for wellbore operations
11/17/2011	US20110278067 Systems and methods for well positioning using phase relations between transverse magnetic field components of a transverse rotating magnetic source
11/17/2011	US20110278066 Method and apparatus for transmitting sensor response data and power through a mud motor
11/17/2011	US20110277998 Apparatus and Method for Setting a Tool in a Borehole
11/17/2011	US20110277996 Subterranean flow barriers containing tracers
11/17/2011	US20110277995 Apparatus and method for monitoring corrosion and cracking of alloys during live well testing
11/17/2011	US20110277994 Method and system for detecting the geometry of underground fractures
11/17/2011	US20110277993 In Situ Determination of Critical Desorption Pressures
11/17/2011	US20110277988 Plug
11/17/2011	US20110277984 Data Gathering Device and Method of Removing Contaminations from a Borehole Wall of a Well Before In Situ Gathering of Formation Data from the Borehole Wall
11/17/2011	US20110277545 Pressure balancing device
11/17/2011	US20110277544 Passive monitoring system for a liquid flow
11/17/2011	CA2739109A1 Artificial lift system
11/16/2011	EP2386881A1 Sonic/acoustic monitoring using optical distributed acoustic sensing
11/16/2011	EP2386719A2 Pressure balancing device
11/16/2011	EP2386718A2 A load cell for a downhole load measuring tool
11/16/2011	EP2386011A1 Pressure management system for well casing annuli
11/16/2011	CN202039842U Key-separation-preventive mud pulse generator
11/16/2011	CN202039841U Signal simulator
11/16/2011	CN202039840U Device for testing working fluid level in oil well through annular gas injection
11/16/2011	CN202039839U Work barrel for delaminated pressure measuring pressure gage
11/16/2011	CN202039838U Plug water separator with multiple conical indenter sections
11/16/2011	CN202039837U Device for water pressure test in wire line coring borehole under condition of no drilling
11/16/2011	CN202039836U Monitoring type pressure balancer for underground instrument
11/16/2011	CN202039835U Portable testing and scaling device applied in array induction well logger
11/16/2011	CN202039825U Integrated separated layer water injection packing water distributor for throwing test
11/16/2011	CN202039772U Rock burst predicting device according to temperature of coal dust of drill hole
11/16/2011	CN1908370B Optical fiber grating temperature-pressure sensor for high-pressure flow liquid testing
11/16/2011	CN1699725B Method and apparatus for safely handling radioactive sources
11/16/2011	CN1664308B Wellbore drilling system and method
11/16/2011	CN102246063A Method and apparatus for directional well logging
11/16/2011	CN102245856A Downhole instrument calibration during formation survey
11/16/2011	CN102242630A Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device
11/16/2011	CN102242629A Coal bed gas pressure detection system
11/16/2011	CN102242628A Multilayered oil well sand prevention simulation pressure testing device
11/16/2011	CN102242627A Inductive probe for inducing array structure of coils
11/16/2011	CN102242619A Reducing branch shaft manhole
11/16/2011	CN102242610A Development of drill collar for detecting hydrocarbons while drilling
11/16/2011	CN101315027B Apparatus for detecting transmitted signal of electromagnetic wave logging instrument
11/15/2011	US8060311 Job monitoring methods and apparatus for logging-while-drilling equipment
11/15/2011	US8057752 Fluid analyzer for determining fluid chemistry of formation fluid by downhole reagent injection spectral analysis
11/15/2011	US8056624 In Situ heavy oil and bitumen recovery process
11/15/2011	US8056623 Surface formation monitoring system and method
11/15/2011	US8056408 Downhole measurement of formation characteristics while drilling
11/15/2011	CA2664522C Instantaneous measurement of drillstring orientation
11/15/2011	CA2638949C Methods of and apparatus for determining the viscosity of heavy oil
11/15/2011	CA2516189C Downhole measurements during non-drilling operations
11/11/2011	CA2739222A1 A load cell for a downhole load measuring tool
11/11/2011	CA2739214A1 Pressure balancing device
11/10/2011	WO2011140214A2 Method and apparatus for neutron logging using a position sensitive neutron detector
11/10/2011	WO2011139788A2 System and method for managing use of a downhole asset
11/10/2011	WO2011139786A2 Systems and methods for using wireless tags with downhole equipment
11/10/2011	WO2011139761A2 Gain-corrected measurements
11/10/2011	WO2011139697A2 Pdc sensing element fabrication process and tool
11/10/2011	WO2011139696A2 At-bit evaluation of formation parameters and drilling parameters
11/10/2011	WO2011139520A1 Downhole actuator apparatus having a chemically activated trigger
11/10/2011	WO2011139497A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias
11/10/2011	WO2011139468A2 Multi-gap interferometric sensors
11/10/2011	WO2011139415A1 System and method for connecting devices in a well environment
11/10/2011	WO2011138926A1 Test device for oil well pipe threaded joint
11/10/2011	WO2011138700A2 Methods for characterizing asphaltene instability in reservoir fluids
11/10/2011	WO2011138576A1 System and method for remote wellbore servicing operations
11/10/2011	WO2011094331A3 Device and method for discrete distributed optical fiber pressure sensing
11/10/2011	WO2011091368A3 System and method for performing an adaptive drilling operation
11/10/2011	US20110276271 Method to determine current condensate saturation in a near-wellbore zone in a gas-condensate formation
11/10/2011	US20110276270 Method to determine current gas saturation in a near-wellbore zone in a volatile oil formation
11/10/2011	US20110272195 Method and Apparatus to Adjust Weight-On-Bit/Torque-On-Bit Sensor Bias
11/10/2011	US20110272148 Methods, systems and apparatus for coiled tubing testing
11/10/2011	US20110272147 Active Seismic Monitoring of Fracturing Operations and Determining Characteristics of a Subterranean Body Using Pressure Data and Seismic Data
11/10/2011	US20110272144 System and method for remote wellbore servicing operations
11/10/2011	US20110272143 Sand production control through the use of magnetic forces
11/10/2011	DE102010019514A1 Erdbohrvorrichtung Boring apparatus
11/10/2011	CA2848298A1 Method of forming a rotary drill bit
11/10/2011	CA2800516A1 At-bit evaluation of formation parameters and drilling parameters
11/10/2011	CA2798369A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias
11/09/2011	EP2385396A2 Data acquisition in an intelligent oil and gas field
11/09/2011	EP2385366A1 Fluid sensor and method of using same
11/09/2011	EP2385213A1 System and method for modelling wellbore trajectories
11/09/2011	EP1885994B1 A device for selective movement of well tools and also a method of using same
11/09/2011	CN202031627U A coal seam spontaneous combustion control system
11/09/2011	CN202031582U Zigbee-based low-power consumption wireless pressure transmitter
11/09/2011	CN202031581U Line concentration controller used for wireless drill-attached inclinometer
11/09/2011	CN202031580U Active magnetic field calibrator with MWD (measurement while drilling) directional probe
11/09/2011	CN202031579U Field detection system for gas drilling
11/09/2011	CN202031578U Leakage-detecting device of sand flushing tubular column
11/09/2011	CN202031577U Annulus testing device
11/09/2011	CN202031576U Wellhead wireless oil pressure and casing pressure long-distance transmission device
11/09/2011	CN202031575U Testing device for units and components of intelligent well
11/09/2011	CN202031574U Probe of electronic single-shot multi-shot inclinometer
11/09/2011	CN202031573U Probe of electronic single/multiple point clinometer
11/09/2011	CN202031572U Signal generator for wireless directional tool
11/09/2011	CN202031571U Cable coil
11/09/2011	CN202031570U Plugging-type pressure differential flowmeter
11/09/2011	CN202031569U Sliding underground guider for resistance
11/09/2011	CN202031568U Remote data processor for wireless drilling instrument

1 ... 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 ... 314