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)
05/2012
05/15/2012US8176975 Tubing pressure insensitive actuator system and method
05/15/2012CA2634472C Downhole measurement system and method
05/15/2012CA2602296C Magnetic encoder with separation of sensor from the environment
05/12/2012CA2756990A1 A cable integrating fiber optics to power and control an electrical submersible pump assembly and related methods
05/10/2012WO2012060974A2 An intergrated source-free method and apparatus for porosity determination: nmr calibrated acoustic porosity
05/10/2012WO2012060713A1 Device to operate downhole equipment
05/10/2012WO2012059738A2 Distributed fluid velocity sensor and associated method
05/10/2012WO2012033905A3 Simultaneous ultrasonic cross-correlation and transit time measurements for multiphase flow rate analysis
05/10/2012WO2012024492A3 Methods for borehole measurements of fracturing pressures
05/10/2012US20120111633 Sensor on a Drilling Apparatus
05/10/2012US20120111631 Formation Dip Geo-Steering Method
05/10/2012US20120111630 System and method of improved depth of cut control of drilling tools
05/10/2012US20120111571 Method for sampling and analysis of production from a subsea well for measuring salinity of produced water and also volumetric ratio between liquid fractions
05/10/2012US20120111561 Systems and Methods for Detecting Phases in Multiphase Borehole Fluids
05/10/2012US20120111560 Fracture Monitoring
05/10/2012US20120111437 Membrane for Oil Compensation
05/10/2012CA2814590A1 Parameter sensing and monitoring
05/10/2012CA2814128A1 Distributed fluid velocity sensor and associated method
05/10/2012CA2812074A1 Device for operating downhole equipment
05/09/2012EP2450676A1 Device for measuring the characteristics of a flow within a pipe
05/09/2012EP2450608A1 Method of monitoring fluid flow within a flexible pipe
05/09/2012EP2449212A2 Isotopic identification of production by individual formations in commingled gas wells
05/09/2012CN202215240U Wake-up device of underground control system
05/09/2012CN202215239U Insulated pipe nipple
05/09/2012CN202215238U Multi-priority network logging data transmission system
05/09/2012CN202215237U Communicating vessel type well kick leakage qualitative monitor
05/09/2012CN202215236U Test device for hole-diameter potentiometer
05/09/2012CN202215235U Capillary pressure transmitting head for under-well test of continuous oil pipe
05/09/2012CN202215234U Under-well testing continuous tube with thermocouple tube and capillary arranged inside
05/09/2012CN202215233U Liquid level automatic monitoring device for low pressure oil wells
05/09/2012CN202215232U Winch sensor
05/09/2012CN202215231U Guide joint for magnetic field emitter
05/09/2012CN202215230U Safety device of testing steel wire
05/09/2012CN202215229U Insulating pup joint for underground mine drilling
05/09/2012CN202215228U Sump oil recovering device for oil well flow meters
05/09/2012CN202215227U Ultra low speed control system of hydraulic logging truck
05/09/2012CN202215226U Down-hole flow measuring and adjusting instrument
05/09/2012CN202215225U Device for petroleum drilling pressure and torsion measurement while drilling
05/09/2012CN202215222U Three-pipe thermal recovery wellhead of extremely-thicken oil horizontal well fireflood-assisted gravity drainage
05/09/2012CN202215181U Pilot production multifunctional integrated wellhead flow device
05/09/2012CN202215159U Safety shock-absorbing connector of measure while drilling (MWD) vertical pipe pressure sensor
05/09/2012CN202214183U Pneumatic control device of winch speed changing box of mechanical logging truck
05/09/2012CN102449263A Well monitoring by means of distributed sensing means
05/09/2012CN102444399A High resolution drilling fluid returning flow meter
05/09/2012CN102444398A High-sensitivity digital-display fishing weight indicator
05/09/2012CN102444393A Intelligent winch type pulling oil production system
05/09/2012CN102444382A Well drilling technology for abutting along drilling
05/09/2012CN101525995B Gas and liquid multiphase quantitative measuring device and method thereof
05/09/2012CN101025083B Experiment method for packer working performance and apparatus thereof
05/08/2012US8174929 Spindle for mud pulse telemetry applications
05/08/2012US8174404 Downlink pulser for mud pulse telemetry
05/08/2012US8171992 Method of fracturing a subterranean formation at optimized and pre-determined conditions
05/08/2012US8171991 Drillstring swivel torque monitor
05/08/2012US8171989 Well having a self-contained inter vention system
05/08/2012CA2756229A1 Methods and compositions for determination of fracture geometry in subterranean formations
05/03/2012WO2012058579A2 In-situ downhole x-ray core analysis system
05/03/2012WO2012058443A2 Imaging in oil-based mud by synchronizing phases of currents injected into a formation
05/03/2012WO2012058440A1 Ruggedized high temperature compatible radiation detector
05/03/2012WO2012058435A2 Drilling control system and method
05/03/2012WO2012058296A2 Downhole tool deployment measurement method and apparatus
05/03/2012WO2012058257A2 Optimization approach to q-factor estimation from vsp data
05/03/2012WO2012058146A2 Packer fluid and system and method for remote sensing
05/03/2012WO2012058089A2 Reservoir pressure testing to determine hydrate composition
05/03/2012WO2012057634A1 Method for using tracer flowback for estimating influx volumes of fluids from different influx zones
05/03/2012WO2012012098A8 Method for in situ fluid assessment and optimization during wellbore displacement operations
05/03/2012US20120109611 System and Method for Performing Wellsite Containment Operations
05/03/2012US20120109603 Quantitative calculation method for oil (gas) saturation of fractured reservoir
05/03/2012US20120106297 Downhole apparatus, device, assembly and method
05/03/2012US20120103688 Drill-Bit Seismic With Downhole Sensors
05/03/2012US20120103687 Redundant Position Reference System for Multilateral Exit Construction and Method for Use of Same
05/03/2012US20120103603 Gravel Pack Inner String Hydraulic Locating Device
05/03/2012US20120103602 Systems, Methods, and Devices for Tagging Carbon Dioxide Stored in Geological Formations
05/03/2012US20120103601 Method of determination of fluid influx profile and near-wellbore space parameters
05/03/2012US20120103600 Method of determination of fluid influx profile and near-wellbore space parameters
05/03/2012US20120103599 Reservoir pressure testing to determine hydrate composition
05/03/2012US20120103248 Weighing and display station
05/03/2012US20120103082 Downhole flow meter
05/03/2012CA2852632A1 Method for using tracer flowback for estimating influx volumes of fluids from different influx zones
05/03/2012CA2816074A1 Downhole tool deployment measurement method and apparatus
05/03/2012CA2815658A1 Drilling control system and method
05/02/2012EP2447682A2 Downhole flow meter
05/02/2012EP2447469A1 Quantitative calculation method for hydrocarbon saturation of fractured reservoir
05/02/2012EP2446116A1 Apparatus and method for detecting and quantifying leakage in a pipe
05/02/2012EP2446115A1 Transducer assembly
05/02/2012EP2446110A2 Method and apparatus for monitoring fluids
05/02/2012CN202209172U Headstall with temperature measuring function
05/02/2012CN202209171U Automatic hole deep measuring system used for roller bit rig
05/02/2012CN202209170U Double-motor cam type testing-adjusting arm of water injection well testing-adjusting meter
05/02/2012CN102439260A Azimuthal at-bit resistivity and geosteering methods and systems
05/02/2012CN102435534A Underground fluid density measuring device
05/02/2012CN102434151A Bottom-water coning dynamic simulation experiment device in bottom-water oil reservoir development and simulation system
05/02/2012CN102434150A Telescopic rubber ball current collector
05/02/2012CN102434149A Mean hole diameter measuring method
05/02/2012CN102434148A Wireless inclinometer while drilling
05/02/2012CN102434147A Structure for mounting polished rod load sensor of oil pump well
05/02/2012CN102434146A Complex tool for well monitoring
05/02/2012CN102434145A Horizontal well experimental system for horizontal well section with adjustable angle
05/02/2012CN101324188B Inner pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor
05/01/2012US8169854 System and method for wireless data transmission
05/01/2012US8169477 Digital video borescope for drilled shaft inspection
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