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)
12/2012
12/27/2012WO2012177897A2 Estimating drill cutting origination depth using marking agents
12/27/2012WO2012177349A1 System and method to measure or generate an electrical field downhole
12/27/2012WO2012177264A2 Systems and methods for determining the moments and forces of two concentric pipes within a wellbore
12/27/2012WO2012177262A1 Apparatus and methods of analysis of pipe and annulus in a wellbore
12/27/2012WO2012175669A1 Tracer fluids with a memory effect for the study of an oil deposit
12/27/2012WO2012175658A2 Tubular device with radiofrequency communication for well head
12/27/2012WO2012148628A3 Flow-induced electrostatic power generator for downhole use in oil and gas wells
12/27/2012WO2012135803A3 Method of directional resistivity logging
12/27/2012WO2012135607A3 Apparatus and method for formation resistivity measurements in oil-based mud using a floating reference signal
12/27/2012WO2012135606A3 Formation resistivity measurements using phase controlled currents
12/27/2012WO2012135604A3 Formation resistivity measurements using multiple controlled modes
12/27/2012WO2012129389A3 Measurement pretest drawdown methods and apparatus
12/27/2012WO2012129214A3 Flow activated sensor assembly
12/27/2012WO2012129058A3 Correction of deep azimuthal resistivity measurements for bending
12/27/2012WO2012122483A3 Graph to analyze drilling parameters
12/27/2012WO2012109247A3 High voltage insulating sleeve for nuclear well logging
12/27/2012WO2012082481A3 Chemical scavenger for downhole chemical analysis
12/27/2012WO2012078467A3 Pressure measurement in highly deviated wells
12/27/2012WO2011141687A3 Subterranean flow barriers containing tracers
12/27/2012WO2011141173A3 Transmission system for communication between downhole elements
12/27/2012WO2011123748A3 System and method for real time data transmission during well completions
12/27/2012US20120330551 Systems, methods, and devices for predicting borehole geometry
12/27/2012US20120327742 Borehole Flow Modulator and Inverted Seismic Source Generating System
12/27/2012US20120325556 Computer-Based Method for Real-Time Three-Dimensional Geological Model Calculation and Reservoir Navigation
12/27/2012US20120325466 Fracturing port locator and isolation tool
12/27/2012US20120325465 Estimating drill cutting origination depth using marking agents
12/27/2012US20120325463 Device for Intervention in a Well Comprising a Pyrotechnic System, Installation and Method Associated Therewith
12/27/2012US20120325460 Well Watchman Pumping And Control System
12/27/2012US20120324993 Transducer Assembly For A Downhole Tools
12/27/2012CA2852881A1 Method for determining spacing of hydraulic fractures in a rock formation
12/27/2012CA2840164A1 Tool and method for locking and releasing a plug
12/27/2012CA2840057A1 System and method to measure or generate an electrical field downhole
12/27/2012CA2839728A1 Apparatus and methods of analysis of pipe and annulus in a wellbore
12/27/2012CA2837955A1 On-site real time detection of tracers
12/27/2012CA2831056A1 Systems and methods for determining the moments and forces of two concentric pipes within a wellbore
12/26/2012EP2537051A2 Apparatus and methods for providing information about one or more subterranean variables
12/26/2012CN202628086U Electronic weight indicator with wireless data transmission mode
12/26/2012CN202628085U Technology control center (TCC) underground universal communication interface board
12/26/2012CN202628084U Wireless water-well production parameter remote measurement and control system based on wireless fidelity (WIFI) technology
12/26/2012CN202628083U 油水分布测试仪 Water distribution tester
12/26/2012CN202628082U Aperture deformation monitoring device for deep hole
12/26/2012CN202628081U 液面仪 Level meter
12/26/2012CN202628080U Device for fixing steel wire of electronic multiple-shot clinometer
12/26/2012CN202628079U Inclination measuring device of geothermal well
12/26/2012CN202628078U Electronic multi-point inclinometer centralizer
12/26/2012CN202628077U Heat insulation cylinder of electronic multiple-shot clinometer
12/26/2012CN202628076U Shock absorption device for electronic multi-point clinometer
12/26/2012CN202628075U Visual multi-section combination sand filling tube for gas injection flooding experiment
12/26/2012CN202628074U Oilfield petroleum flux measurement system with preprocessing function
12/26/2012CN202628073U Liquid-gas separation metering device for oil well
12/26/2012CN202628072U 5700 bridle assembly
12/26/2012CN202628071U Novel horizontal well female joint weighting rod
12/26/2012CN202628070U Drilling downhole parameter interaction simulation experimental device
12/26/2012CN202628069U Single-well measurement program control monitoring device
12/26/2012CN202628068U Underground spring spear of free point indicator
12/26/2012CN202628028U Horizontal well section displacement efficiency measuring device
12/26/2012CN202628010U Novel sealing section
12/26/2012CN202628009U Electronic multiple-shot clinometer bit hook
12/26/2012CN202628007U Fishing head of electronic multiple-shot clinometer
12/26/2012CN102841546A Underground control system, control method and application of underground control system and control method
12/26/2012CN102839972A Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method
12/26/2012CN102839971A Downhole logging instrumental bus system based on coaxial cable Ethernet and logging method
12/26/2012CN102839970A On-line monitoring data concentrator of power cable intermediate joint
12/26/2012CN102839969A Device for bit pressure/torque measurement while drilling in oil drilling
12/26/2012CN102839968A Visual experimental device and visual experimental method for whole gas injection oil-displacement process
12/26/2012CN102839967A Multifunctional horizontal gas well simulation experiment device
12/26/2012CN102839966A Micro-differential pressure optical fiber flow sensor in high temperature environment
12/26/2012CN102839965A Signal processing device for nuclear magnetic resonance logger
12/26/2012CN102839964A Coal and gas burst risk parameter drilling and predicting integrated method
12/26/2012CN102839963A While-drilling pressure torque gauging nipple
12/26/2012CN102839961A Calibration device of bit pressure/torque measurement while drilling apparatus in oil drilling and method
12/26/2012CN102839960A Oil well metering and separating device
12/26/2012CN102839953A Method for controlling injection flow through pressure test
12/26/2012CN101845947B High-temperature high-pressure perforation-flow efficiency detecting system
12/26/2012CN101832122B Three-pressure state perforation experiment target
12/26/2012CN101775980B Quick drainage and hole sealing gas parameter testing system
12/26/2012CN101392645B Rapid phase discrimination and automatic transmission unit
12/25/2012US8336620 Well seals
12/20/2012WO2012174202A2 Systems and methods for placing markers in a formation
12/20/2012WO2012174057A1 Coiled tubing useful life monitor and technique
12/20/2012WO2012174051A2 Methods and apparatus for analyzing operations
12/20/2012WO2012174048A2 Methods and apparatus for determining downhole fluid parameters
12/20/2012WO2012174046A2 Methods and apparatus for determining downhole parameters
12/20/2012WO2012174044A1 Method of and system for drilling information management and resource planning
12/20/2012WO2012174038A2 Methods and apparatus for determining downhole parameters
12/20/2012WO2012174034A2 Methods and apparatus for determining downhole parameters
12/20/2012WO2012174032A2 Cutting elements comprising sensors, earth-boring tools having such sensors, and associated methods
12/20/2012WO2012173797A2 Hydrocarbon detection in annulus of well
12/20/2012WO2012173601A1 System, method, and computer program for predicting borehole geometry
12/20/2012WO2012141837A3 Apparatus and method for testing solids production in a wellbore
12/20/2012WO2012112926A8 Method and apparatus for strengthening a wellbore
12/20/2012WO2012059736A3 Parameter sensing and monitoring
12/20/2012US20120323494 Identifying types of sensors based on sensor measurement data
12/20/2012US20120318578 Method of and system for drilling information management and resource planning
12/20/2012US20120318502 Water detection and 3-phase fraction measurement systems
12/20/2012US20120318501 Systems and Methods for Placing Markers in a Formation
12/20/2012US20120318500 Methods and systems for monitoring and modeling hydraulic fracturing of a reservoir field
12/20/2012CA2838339A1 Control system for downhole operations
12/20/2012CA2837978A1 System, method, and computer program for predicting borehole geometry
12/20/2012CA2837885A1 Dynamic image compression for imaging while drilling applications
1 ... 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 ... 314