E21B 47 - Survey of boreholes or wells

Patents for E21B 47 - Survey of boreholes or wells (31,352)
08/2013
08/20/2013	CA2572686C Monitoring fluid pressure in a well and retrievable pressure sensor assembly for use in the method
08/20/2013	CA2553002C Automated drill string position survey
08/16/2013	CA2806955A1 Operation process for a deposit based on a selection technique for the positions of the wells to be drilled
08/15/2013	WO2013119884A1 Apparatus and methods for testing inductively coupled downhole systems
08/15/2013	WO2013119685A1 Modeling and analysis of hydraulic fracture propagation to surface from a casing shoe
08/15/2013	WO2013119248A2 Systems and methods for estimating fluid breakthrough times at producing well locations
08/15/2013	WO2013119222A2 Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers
08/15/2013	WO2013074765A3 Methods for geosteering a drill bit in real time using surface acoustic signals
08/15/2013	WO2012148805A3 Acoustic transponder for monitoring subsea measurements from an offshore well
08/15/2013	WO2012114068A3 Use of micro-electro-mechanical systems (mems) in well treatments
08/15/2013	WO2012085495A3 Electrical power and/or electrical signal transmission
08/15/2013	WO2012083068A3 Method of determining reservoir pressure
08/15/2013	WO2012083050A3 Electronic control system for a tubular handling tool
08/15/2013	US20130208259 Parameter sensing and monitoring
08/15/2013	US20130206420 Retrievable flow module unit
08/15/2013	US20130206419 Blowout preventer and launcher sytem
08/15/2013	US20130206402 Actuation dart for wellbore operations, wellbore treatment apparatus and method
08/15/2013	US20130206401 Actuation system and method for a downhole tool
08/15/2013	US20130206399 Method for preheating an oil-saturated formation
08/15/2013	US20130206398 PROCESS FOR HYDRAULIC FRACTURING WITH pH CONTROL
08/15/2013	US20130206397 Apparatus and method for positioning and orienting a borehole tool
08/15/2013	US20130206396 Piston tractor system for use in subterranean wells
08/15/2013	US20130206395 System, method and apparatus for reducing shock and vibration in down hole tools
08/15/2013	US20130205888 Method and apparatus to measure borehole pressure during blasting
08/14/2013	EP2626507A1 Method and system for calibrating a downhole imaging tool
08/14/2013	EP2625383A2 Formation sensing and evaluation drill
08/14/2013	CN203133958U Intelligent well and line patrol recorder
08/14/2013	CN203130080U Experimental device of direction gamma logging instrument
08/14/2013	CN203130078U Safe pull-out indicator
08/14/2013	CN203130077U Novel high-pressure well pressure drop test device
08/14/2013	CN203130076U Monitoring device for flow, temperature and pressure of layered gas injection
08/14/2013	CN203130075U Wireless measurement instrument for temperature and pressure of oil well head
08/14/2013	CN203130074U Automatic on-off device for wireless inclinometer
08/14/2013	CN203130073U Directional sensor calibration device with function of temperature correction experiment
08/14/2013	CN203130072U Wireless while drilling angular difference measuring instrument for horizontal wells and directional wells
08/14/2013	CN203130071U Battery shock absorber for wireless LWD (logging while drilling) inclinometer
08/14/2013	CN203130070U Circulation sleeve for wireless LWD (logging while drilling) inclinometer
08/14/2013	CN203130069U Oilfield flooding efficiency testing system
08/14/2013	CN203130068U Integrated intelligent sensor for petrochemical well
08/14/2013	CN203130067U Pumping unit electrical work diagram oil-gauging device
08/14/2013	CN203130066U Oil-gas-water three-phase automatic measuring device
08/14/2013	CN203130065U Single well continuous metering device
08/14/2013	CN203130064U Oil-gas well fluid dynamic production measuring and converting device
08/14/2013	CN203130063U Skid-mounted intelligent well selection metering system
08/14/2013	CN203130012U Novel seal guiding device
08/14/2013	CN203129999U Control system of electronically controlled hydraulically driven coiled tubing downhole tractor
08/14/2013	CN203129981U Centralizing device of wireless LWD (logging while drilling) inclinometer
08/14/2013	CN203129147U Circular pile formed hole diameter testing device
08/14/2013	CN103244111A Method for calculating and analyzing working frequency on basis of sound transmission channel of drill string
08/14/2013	CN103244110A Coiled tubing drum device with cable
08/14/2013	CN103244109A High-temperature and high-pressure leaking stoppage simulation device
08/14/2013	CN103244108A Formation pressure determination method under condition of failure in wall shut-in during blowout
08/14/2013	CN103244107A Underground reinjection flow pressure detector using injection-production process in the same well
08/14/2013	CN103244106A Underground vibration measurement device of storage type screw pump
08/14/2013	CN103244105A Axial tension recording system of storage-type well-entering oil tube
08/14/2013	CN103244104A Method for extracting sleeve wave attenuation rate through dispersion correction
08/14/2013	CN103244103A Nano-magnetic-fluid-based hydraulic fracturing fracture real-time monitoring system and nano-magnetic-fluid-based hydraulic fracturing fracture real-timemonitoring method
08/14/2013	CN103244102A Defoaming rotor flow pressure differential air injection profile tester, defoaming rotor flow pressure differential air injection profile testing system and defoaming rotor flow pressure differential air injection profile testing method
08/14/2013	CN103244101A Method for evaluating quality of rock stratum while drilling
08/14/2013	CN103244100A Miniature tension logging instrument
08/14/2013	CN103244099A Lever flowmeter
08/14/2013	CN103244098A Layering flow tester of low-injection-quantity water injection well
08/14/2013	CN103243744A Detecting device for sediment thickness of ground foundation engineering construction
08/14/2013	CN103241988A Lithologic density dual-parameter artificial stone standard module and manufacturing technique thereof
08/14/2013	CN102344099B Well logging winch and braking device thereof
08/14/2013	CN101818641B Method and apparatus for data communication with underground instrument package
08/14/2013	CN101555788B Double-detection probe measuring and adjusting instrument and detection method thereof
08/14/2013	CN101392643B Underground data wireless transmission device of gas drilling while drilling
08/13/2013	US8508231 Logging tool employing a monopole current injection electrode for microresistivity imaging
08/13/2013	US8505632 Method and apparatus for deploying and using self-locating downhole devices
08/13/2013	US8505625 Controlling well operations based on monitored parameters of cement health
08/13/2013	US8505620 Method and system for accessing subterranean deposits from the surface and tools therefor
08/13/2013	US8505376 Downhole flow meter
08/13/2013	US8505375 Geochemical surveillance of gas production from tight gas fields
08/13/2013	CA2571966C Shaft encoder with anti-backlash gears
08/13/2013	CA2570344C Apparatus and methods for self-powered communication and sensor network
08/08/2013	WO2013116826A2 Wellsite communication system and method
08/08/2013	WO2013115812A1 Opening or closing a fluid flow path using a material that expands or contracts via a change in temperature
08/08/2013	US20130199845 Wellsite Communication System and Method
08/08/2013	US20130199795 Exercising a Well Tool
08/08/2013	US20130199776 Apparatus and method for preventing damage to a downhole pump impeller
08/08/2013	US20130199775 Monitoring Flow Past Submersible Well Pump Motor with Sail Switch
08/07/2013	EP2622386A2 Simulation of a geological phenomenon
08/07/2013	EP2622385A2 Karstification simulation
08/07/2013	EP2622384A2 Chemical scavenger for downhole chemical analysis
08/07/2013	EP2622177A2 Downhole orientation sensing with nuclear spin gyroscope
08/07/2013	CN203115141U Underwater combination valve
08/07/2013	CN203114282U Underground mud positive pulse generator
08/07/2013	CN203114281U Wireless transmission control system for down-the-hole rock drilling
08/07/2013	CN203114280U Underground continuous wave mud-pulse generator
08/07/2013	CN203114279U Drainage drilling hole sealing gas leakage testing device
08/07/2013	CN203114278U Direct-reading seal examining instrument suitable for eccentric water distributor
08/07/2013	CN203114277U Coal seam roadway pressure relief belt width measuring system based on drilling gas leakage
08/07/2013	CN203114276U Ice layer rotary drilling cutting heat and drilling parameter experimental device
08/07/2013	CN203114275U Anti-freeze shakeproof pressure gage connecting device for pumping wellhead
08/07/2013	CN203114274U Thermal-insulation type high-temperature electronic manometer
08/07/2013	CN203114273U Cylindrical liquid level meter
08/07/2013	CN203114272U Gas well liquid level tester
08/07/2013	CN203114271U Automatic liquid-level tester of high-temperature sleeve gas-oil well
08/07/2013	CN203114270U Torsion-proof testing device for oil pumping unit

1 ... 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 ... 314