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)
11/2012
11/29/2012CA2837339A1 Wireline apparatus
11/29/2012CA2837193A1 Detection of gas influx into a wellbore
11/29/2012CA2836543A1 Verification of swelling in a well
11/28/2012EP2527587A2 Reservoir evaluation system
11/28/2012EP2526260A1 Virtual flowmeter for a well
11/28/2012EP2526259A1 A device for intervention in a well comprising a pyrotechnic system, installation and method associated therewith
11/28/2012CN202560211U Oil pipe pressure testing discharge device
11/28/2012CN202560210U Tubing coupling online detecting instrument
11/28/2012CN202560209U Broken thermometer extractor
11/28/2012CN202560208U Temperature measuring device for oil well output liquid
11/28/2012CN202560207U Experimental device for determining cementation degree of interface of well cementation cement sheath
11/28/2012CN202560206U Well cementation cement sheath external-load extrusion damage dynamic measuring device
11/28/2012CN202560205U Device for anaerobic preparation and anaerobic preservation oil field injection system
11/28/2012CN202560204U Primer lead mold
11/28/2012CN202560203U Associated natural gas brine well produced fluid concentration monitoring device
11/28/2012CN202560202U 缆芯切换装置 The core switching device
11/28/2012CN102803652A Method and apparatus for high resolution sound speed measurements
11/28/2012CN102797458A Three-dimensional simulation device for edge/bottom water reservoir
11/28/2012CN102797457A Device and method for precisely calculating well depth based on polarized light
11/28/2012CN102797456A High temperature and high pressure resistant packaging method for underground communication device of coiled tubing drilling machine
11/28/2012CN102797455A Rock stratum fracture detecting device
11/28/2012CN102797454A Tester for oilfield eccentric separate injection well and long-time real-time working condition monitoring method
11/28/2012CN102797453A Well logging densimeter
11/28/2012CN102797450A Guiding force measuring and control device and guiding force calibrating method of rotary guiding drilling system
11/28/2012CN102797442A Deep fluid diversion method
11/28/2012CN101892834B Pressure balance type tank in formation pressure tester-during-drilling tool
11/28/2012CN101871346B Dual-direction-measurement multi-arm borehole measuring apparatus
11/28/2012CN101798917B Multifunctional dynamic pollution evaluation device of coalbed drilling fluid
11/28/2012CN101769149B CO2 injection profile well logging method
11/28/2012CN101765716B Well jet device
11/28/2012CN101696629B Physical model test device for evaluating sand preventing process of vertical well
11/28/2012CN101592029B Method for well logging with induced polarization spectrum
11/28/2012CN101220741B Hole depth sensing
11/27/2012US8320393 Signalling method and apparatus
11/27/2012US8319657 System and method for wireless communication in a producing well system
11/27/2012US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor
11/27/2012US8316964 Drill bit transducer device
11/27/2012US8316937 Multi-window lateral well locator/reentry apparatus and method
11/27/2012US8316936 Use of micro-electro-mechanical systems (MEMS) in well treatments
11/27/2012US8316704 Downhole annular measurement system and method
11/27/2012US8316703 Flexible coupling for well logging instruments
11/27/2012CA2684222C Monitoring, controlling and enhancing processes while stimulating a fluid-filled borehole
11/27/2012CA2558318C Providing a local response to a local condition in an oil well
11/27/2012CA2512497C Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
11/22/2012WO2012158478A1 Carbon-based fluorescent tracers as oil reservoir nano-agents
11/22/2012WO2012158155A1 Mobile pressure optimization unit for drilling operations
11/22/2012WO2012156730A2 Determining whether a wellbore sealing operation has been performed correctly
11/22/2012WO2012106640A3 Connection cartridge for downhole string
11/22/2012WO2012094305A3 Method and device to measure perforation tunnel dimensions
11/22/2012WO2011133497A3 An expert system for selecting fit-for-purpose technologies and wells for reservoir saturation monitoring
11/22/2012US20120292111 Formation Dip Geo-Steering Method
11/22/2012US20120292110 System and apparatus for modeling the behavior of a drilling assembly
11/22/2012US20120292036 Offshore universal riser system
11/22/2012US20120292023 Verification of swelling in a well
11/22/2012US20120291539 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012CA2835807A1 Determining whether a wellbore sealing operation has been performed correctly
11/21/2012EP2524251A2 Improved efpi sensor
11/21/2012EP2524250A2 Optical measurement device
11/21/2012EP2524205A1 Estimation of reservoir permeability
11/21/2012EP2524101A1 Bearing contact pressure reduction in well tools
11/21/2012CN202545098U Downhole turbine generator system
11/21/2012CN202544842U Well-logging vectorization and wireless network data transmission device
11/21/2012CN202544841U An electric analog system of infiltration law of wells in complex structures
11/21/2012CN202544840U Device for testing liquid rheological property under high temperature and high pressure
11/21/2012CN202544839U Pushing type multi-arm microsphere, microelectrode and caliper combination logger
11/21/2012CN202544838U Orientation parameter measuring apparatus for while-drilling near-bit
11/21/2012CN202544837U Downhole engineering parameter while drilling test dual-system
11/21/2012CN202544836U Logging instrument conveying device
11/21/2012CN202544823U Well field leaching solution control device
11/21/2012CN202544821U Return water filter of metering station
11/21/2012CN102791959A Passive micro-vessel and sensor
11/21/2012CN102787841A Tubing hanger setting confirmation system
11/21/2012CN102787840A Multilayer static pressure measuring apparatus and measuring method
11/21/2012CN102787839A Method for accurately drawing downhole conditions of oil field by acoustic emission located monitoring
11/21/2012CN102787838A Improved SAGD (steam assisted gravity drainage) algorithm based on Kalman filtering
11/21/2012CN102787817A Comprehensive simulation experimental device of drilling circulation system
11/21/2012CN102787804A Device and method for drilling by using full-automatic composite material continuous pipe
11/21/2012CN101691841B Circuit used for petroleum underground three-dimensional acoustic wave signal receiving sensor array
11/21/2012CN101634222B Device for measuring drilling water level
11/21/2012CN101542319B A method of downhole, non-isotopic generation of ionised radiation and an apparatus for use when practising the method
11/20/2012US8312925 Bottom hole assembly for wellbore operations
11/20/2012US8312923 Measuring a characteristic of a well proximate a region to be gravel packed
11/20/2012US8312767 Apparatus and method for fluid flow measurement with sensor shielding
11/15/2012WO2012154415A2 Apparatus and method for drilling wellbores based on mechanical specific energy determined from bit-based weight and torque sensors
11/15/2012WO2012154294A2 Two component source seismic acquisition and source de-ghosting
11/15/2012WO2012152574A1 Subsea data communication system and method
11/15/2012WO2012112978A3 Method, system, apparatus and computer readable medium forfield lift optimization using distributed intelligence and single-variable slope control
11/15/2012WO2012106227A3 System and method for determining pressure transition zones
11/15/2012WO2012087864A3 Method of utilizing subterranean formation data for improving treatment operations
11/15/2012WO2012087734A3 Synchronization methods for downhole communication
11/15/2012WO2012054396A3 Hardened data recording system for drilling rigs and other drilling equipment
11/15/2012US20120290209 Downhole Drilling Vibration Analysis
11/15/2012US20120290207 Boring technique using locate point measurements for boring tool depth prediction
11/15/2012US20120286967 Downhole Data Transmission System
11/15/2012US20120286789 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal
11/15/2012US20120285701 Method For Using Dynamic Target Region For Well Path/Drill Center Optimization
11/15/2012US20120285234 Thermography logging tool
11/15/2012US20120285233 Fluid Flow Measuring Device and Method
11/15/2012US20120285231 Testing Additives for Production Enhancement Treatments
11/15/2012DE112011100419T5 Datenverarbeitungsverfahren und -system zur Rohrleitungsleckageüberprüfung Data processing method and system for pipeline leak check
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