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)
08/2010
08/19/2010US20100206561 Apparatus and Method for Controlling the Connection and Disconnection Speed of Downhole Connectors
08/19/2010US20100206558 Apparatus and method for instantaneously injecting tracer for groundwater well
08/19/2010US20100206557 Geophysical data processing systems
08/19/2010US20100206548 Methods and apparatus to perform stress testing of geological formations
08/19/2010DE102009007197A1 Teleskopierbares Ketteninklinometer Telescopic Ketteninklinometer
08/19/2010CA2752220A1 Downhole tool housing
08/19/2010CA2749580A1 Autochoke system
08/19/2010CA2749573A1 Apparatus and process for wellbore characterization
08/18/2010EP2217984A1 Wellhead flowline protection and testing system with esp speed controller and emergency isolation valve
08/18/2010EP1354124B1 Method and system for enhanced access to a subterranean zone
08/18/2010CN201555632U Flowing water level sampling system
08/18/2010CN201554458U Digital acoustical wave density-varied comprehensive logging instrument
08/18/2010CN201554457U Digital acoustic-wave multi-level downhole instrument capable of realizing automatic real-time gain control
08/18/2010CN201554456U Ground wire extractor for measuring probe while drilling in underground coal mine
08/18/2010CN201554455U Simple well logging unit
08/18/2010CN201554454U Deep-well unpowered data transmitting device
08/18/2010CN201554453U Wireless voltage-taking device
08/18/2010CN201554452U Overpressure difference protection balance piston
08/18/2010CN201554451U Gyroscopic well-trace tester
08/18/2010CN201554450U Flexible belt-shaped object quick connector
08/18/2010CN201554449U Logging hydraulic collapsible device
08/18/2010CN201554448U Portable oil well output metering device
08/18/2010CN201554447U Logging hard electrode stabilizer
08/18/2010CN201554446U Oil extraction multifunctional mobile metering vehicle
08/18/2010CN201554445U Device for heat-cleaning wax-removing and output calibration of oil well
08/18/2010CN201554426U Pollution-free well-washing device
08/18/2010CN201554412U Novel wellhead cover plate for preventing object from falling
08/18/2010CN201554406U Falling instrument fisher
08/18/2010CN201554375U Guide horizontal jet grouting construction drill bit
08/18/2010CN1900481B Perforation efficiency detecting system under analogue storage layer condition
08/18/2010CN1777736B Well string assembly
08/18/2010CN101806228A Coal bed gas radio spectrum direction-finding early warning system
08/18/2010CN101806214A Ultra-deep well drilling simulation experiment device
08/18/2010CN101806212A Rotary electromagnetic vortex imaging well measuring instrument
08/18/2010CN101806211A Calculation method using solenoid groups to achieve electromagnetic guiding distance measurement while drilling
08/18/2010CN101806210A System using solenoid groups to achieve electromagnetic guiding distance measurement while drilling
08/17/2010US7778780 Well characterisation method
08/17/2010US7777643 Optical communications with a bottom hole assembly
08/17/2010US7775301 Advanced steering tool system, method and apparatus
08/17/2010US7775274 Method for detecting fluid leakage from a subterranean formation
08/17/2010US7775273 Tool using outputs of sensors responsive to signaling
08/17/2010US7775099 Downhole tool sensor system and method
08/13/2010CA2692937A1 Acoustic telemetry stacked-ring wave delay isolator system and method
08/12/2010WO2010091348A2 Downhole apparatus with a wireless data communication device between rotating and non-rotating members
08/12/2010WO2010091160A2 Multi-mode downhole acoustic source
08/12/2010WO2010091103A1 Method and apparatus to construct and log a well
08/12/2010WO2010090529A2 Plug
08/12/2010WO2010068887A3 Wide liquid temperature range fluids for pressure balancing in logging tools
08/12/2010WO2010054387A3 Method and apparatus for echo-peak detection for circumferential borehole image logging
08/12/2010WO2010054375A3 Emat acoustic signal measurement using modulated gaussian wavelet and hilbert demodulation
08/12/2010US20100201540 System and method for using dual telemetry
08/12/2010US20100201366 Multi-Frequency Boring Tool Locating System and Method
08/12/2010US20100200743 Well collision avoidance using distributed acoustic sensing
08/12/2010US20100200296 System and method for accurate wellbore placement
08/12/2010US20100200295 Downhole Apparatus with a Wireless Data Communication Device Between Rotating and Non-Rotating Members
08/12/2010US20100200294 Rock drill apparatus
08/12/2010US20100200244 Method of and apparatus for completing a well
08/12/2010US20100200242 Method and apparatus for centrifugal separation
08/12/2010US20100200228 Reducing differential sticking during sampling
08/12/2010US20100200226 Bottom hole assembly for wellbore operations
08/12/2010US20100200225 Multi-functional completion tool
08/12/2010US20100200223 Method for heating a hydrocarbons reservoir
08/12/2010US20100200222 Method and apparatus for performing cementing operations
08/12/2010US20100200213 Force Balanced Rotating Pressure Control Device
08/12/2010CA2751718A1 Downhole apparatus with a wireless data communication device between rotating and non-rotating members
08/12/2010CA2692907A1 System and method for accurate wellbore placement
08/11/2010EP2216498A2 Latch position indicator system and method
08/11/2010CN201549002U Electronic logging device of geological drilling information
08/11/2010CN201548376U Pressure testing device of pressure sensor
08/11/2010CN201546713U Continuous tubing operation down-hole wireless data transmission device
08/11/2010CN201546712U Multi-channel AD parallel conversion acoustic logging instrument
08/11/2010CN201546711U EDIB bus adapter
08/11/2010CN201546710U Sectionalized water-exploration testing pipe column of casing well-completion horizontal well
08/11/2010CN201546709U Screen pipe well completion simulation testing device
08/11/2010CN201546708U Downhole string for monitoring submersible electric pump well without pulling strings
08/11/2010CN201546707U Downhole tool automatic pressure test device
08/11/2010CN201546706U Pressure transmission structure
08/11/2010CN201546705U Pump well steel wire water blocking device
08/11/2010CN201546704U Bus-mode deviation azimuth logging instrument of oil logging
08/11/2010CN201546703U Underground back-up risk-avoiding system of logging instrument
08/11/2010CN201546702U Anti-drop device for indicator diagram tester of pumping well
08/11/2010CN201546701U Automatic visual angle adjusting device for display of all hydrocarbon intelligent logging system
08/11/2010CN201546700U Portable well drilling geologic parameter acquisition instrument
08/11/2010CN201546699U Individual-well producing rate tester for oil production
08/11/2010CN201546698U Propeller auxiliary arm with wiring protection function
08/11/2010CN201546697U Oil logging instrument balance device
08/11/2010CN201546696U Pressure balancing mechanism
08/11/2010CN201546695U Seal structure of rotary bridle
08/11/2010CN201546694U Underground instrument maintenance and calibration system
08/11/2010CN201546688U Symmetrical unequal high helical double-nib butt-joint guide positioning device
08/11/2010CN201546679U Logging cable oil wiper
08/11/2010CN201546654U Spear for instruments in pipes
08/11/2010CN201546650U Sensor retracting/releasing device on casing stress magnetic memory detector
08/11/2010CN1930573B Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data
08/11/2010CN101802347A Method for managing hydrates in subsea production line
08/11/2010CN101798923A System and method for remote control coal mine evacuation working face advance detection and forecasting
08/11/2010CN101798922A Method for judging filling degree of natural gas and application thereof in low-abundance gas reservoir
08/11/2010CN101798920A Controllable signal transmitter capable of loading pseudo random code
08/11/2010CN101798919A Method for monitoring whether drilling mud is invaded by grouting fluid during drilling and grouting parallel operation
08/11/2010CN101798918A Calculation method used in MWD electromagnetic detection of parallel distance of adjacent wells
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