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)
07/2012
07/04/2012CN101270658B Correlated flux injection section test method and construction technique
07/04/2012CN101265804B Well drilling high precision gradient meter sensor perpendicular installation error compensation process
07/04/2012CN101139925B Method for while-drilling testing reservoir parameter property and adjusting well drilling action in real time
07/04/2012CN101122230B Tracing flow polymer-injected profile logging device, tracing agent and confection device and logging method
07/03/2012US8214186 Oilfield emulator
07/03/2012US8214151 Methods of identifying high neutron capture cross section doped proppant in induced subterranean formation fractures
07/03/2012US8210280 Bit based formation evaluation using a gamma ray sensor
07/03/2012US8210258 Wireline-adjustable downhole flow control devices and methods for using same
07/03/2012US8210257 Fracturing a stress-altered subterranean formation
07/03/2012US8210036 Devices and methods for formation testing by measuring pressure in an isolated variable volume
06/2012
06/28/2012WO2012088131A2 Biomass conversion systems having integrated heat management and methods for use thereof
06/28/2012WO2012087892A2 Method for controlling the downhole temperature during fluid injection into oilfield wells
06/28/2012WO2012087864A2 Method of utilizing subterranean formation data for improving treatment operations
06/28/2012WO2012087734A2 Synchronization methods for downhole communication
06/28/2012WO2012087604A2 System and method for moniitoring strain & pressure
06/28/2012WO2012087466A1 Inducing flowback of damaging mud-induced materials and debris to improve acid stimulation of long horizontal injection wells in tight carbonate formations
06/28/2012WO2012087175A1 Method for estimating properties of a subterranean formation
06/28/2012WO2012084850A2 Composite part including a cutting element
06/28/2012WO2012047861A3 Wear-out detection methods for printed circuit board assembly components used in downhole oilfield environments
06/28/2012US20120166089 Job Monitoring Methods and Apparatus for Logging-While-Drilling Equipment
06/28/2012US20120160488 Method and apparatus for pressure testing a tubular body
06/28/2012US20120160481 System and method for reconstructing microseismic event statistics from detection limited data
06/28/2012US20120160329 Method and apparatus for monitoring fluids
06/28/2012CA2822756A1 Method for controlling the downhole temperature during fluid injection into oilfield wells
06/28/2012CA2822084A1 Biomass conversion systems having integrated heat management and methods for use thereof
06/28/2012CA2822033A1 System and method for moniitoring strain & pressure
06/27/2012EP2469243A2 Canted helix collapsible flowmeter and method of measuring a fluid flow
06/27/2012EP2467697A1 Nanofiber spectral analysis
06/27/2012EP2467576A2 Fiber optic gravel distribution position sensor system
06/27/2012EP2467575A2 Apparatus and method for downhole communication
06/27/2012EP2467574A1 Optical fiber reflective sensor interrogation device
06/27/2012CN202285275U 一种测井电缆鱼雷 Logging and cable torpedo
06/27/2012CN202284472U Differential well temperature and pressure tester for thermal recovery horizontal well
06/27/2012CN202284471U 一种小型井口连接器 A small wellhead connector
06/27/2012CN202284470U 一种测井马龙头 Logging and horse leader
06/27/2012CN202284469U 油井用旋转联接器 Wells with rotary coupling
06/27/2012CN102518430A Method and device for evaluating properties of stratum interface near to well bottom on basis of impact method
06/27/2012CN102518427A System for tracking running state of underground plunger for gas production and working method thereof
06/27/2012CN102518426A Hydrofracture bottom-hole pressure monitoring process
06/27/2012CN102518425A Directional gamma logging-while-drilling tool
06/27/2012CN102518424A Compound measuring device for resistivity and temperature of fluid
06/27/2012CN102518423A High-temperature thermal production well downhole testing method
06/27/2012CN102518422A Method for detecting and identifying current stress state of downhole casing pipe of oil field
06/27/2012CN102518421A Physical simulation visualization experimental device and forming method thereof
06/27/2012CN101581220B Built-in signal detection sensor for sand production of oil-gas wells
06/27/2012CN101280680B Three-phase flow measuring device
06/26/2012US8207730 Method and device for determining the existence and location of stress-inducing forces on a rod
06/26/2012US8205509 Rotating flow meter using passive non-permanent magnet markers
06/26/2012CA2590314C Monitoring injected nonhydrocarbon and nonaqueous fluids through downhole fluid analysis
06/23/2012CA2762198A1 Wired mud motor components, methods of fabricating the same, and downhole motors incorporating the same
06/21/2012WO2012083210A2 Gas detection and quantification method using a pulsed neutron logging tool
06/21/2012WO2012083068A2 Method of determining reservoir pressure
06/21/2012WO2012082774A2 System and method for downhole communication
06/21/2012WO2012082620A2 Improved alignment of downhole strings
06/21/2012WO2012082481A2 Chemical scavenger for downhole chemical analysis
06/21/2012WO2012082378A2 Apparatus and method for controlling fluid flow from a formation
06/21/2012WO2012082333A2 Intelligent pressure actuated release tool
06/21/2012WO2012082302A1 Method for automatic control and positioning of autonomous downhole tools
06/21/2012WO2012082144A1 Well perforating with determination of well characteristics
06/21/2012WO2012082143A1 Modeling shock produced by well perforating
06/21/2012WO2012082142A1 Sensing shock during well perforating
06/21/2012WO2012080808A1 Downhole tool thermal device
06/21/2012WO2012079768A2 Equipment and methods for determining waiting-on-cement time in a subterrenean well
06/21/2012WO2012058257A3 Optimization approach to q-factor estimation from vsp data
06/21/2012WO2012051190A3 Fluid pressure-viscosity analyzer for downhole fluid sampling pressure drop rate setting
06/21/2012WO2012051186A3 System and method for operating monitoring elements and single use elements with a common cable
06/21/2012WO2012049506A3 Apparatus and methods for orienting, stabilising or stably operating a logging tool
06/21/2012WO2012031202A3 A resonance method for measuring the electroacoustic constant and permeability of rock formations
06/21/2012WO2011080640A3 Look ahead advance formation evaluation tool
06/21/2012US20120158308 Canted Helix Collapsible Flowmeter and Method of Measuring A Fluid Flow
06/21/2012US20120158306 System and method for preparing near-surface heavy oil for extraction using microbial degradation
06/21/2012US20120155508 Systems and methods for monitoring a well
06/21/2012US20120152619 Apparatus and method for position-sensitive pipe provisioning in top-drive drilling
06/21/2012US20120152617 Real Time Bit Monitoring
06/21/2012US20120152555 Circuit Functional Test System and Method
06/21/2012US20120152533 Control of a Component of a Downhole Tool
06/21/2012US20120152532 Artificial lift integral system for the production of hydrocarbons for oil wells by means of pneumatic pumping with natural gas autonomously supplied by oil wells
06/21/2012US20120152531 MULTISTAGE SEPARATOR VESSEL FOR CAPTURING LPGs
06/21/2012US20120152530 Electronic control system for a tubular handling tool
06/21/2012US20120152529 Electrical methods fracture detection via 4d techniques
06/21/2012US20120152519 Sensing shock during well perforating
06/21/2012US20120152518 Low-Profile Suspension of Logging Sensor and Method
06/21/2012US20120152013 Methods and systems for acquiring acceleration waveforms in a borehole
06/21/2012US20120152012 Method of Determining Surface Level, and a Soil Moisture Sensor
06/21/2012US20120152011 Scale-Up Device For Testing Bit Balling Characteristics
06/21/2012CA2821914A1 A method for obtaining diagnostics and control of the pumping process of rod pumped oil and gas wells and devices for the method execution
06/21/2012CA2821301A1 Gas detection and quantification method using a pulsed neutron logging tool
06/21/2012CA2821124A1 Equipment and methods for determining waiting-on-cement time in a subterrenean well
06/21/2012CA2821030A1 Well monitoring
06/21/2012CA2819372A1 Method for automatic control and positioning of autonomous downhole tools
06/21/2012CA2819364A1 Autonomous downhole conveyance system
06/21/2012CA2819164A1 Method of determining reservoir pressure
06/21/2012CA2819155A1 Electronic control system for a tubular handling tool
06/20/2012EP2466063A1 Equipment and methods for determining waiting-on-cement time in a subterranean well
06/20/2012EP2466062A2 Devices and methods for transmitting eds back-up signals to subsea pods
06/20/2012EP2464823A1 Method and system of transmitting acoustic signal from a wellbore
06/20/2012EP2464822A1 Pipeline inspection apparatus and method
06/20/2012EP2464818A2 Thermal vapor stream apparatus and method
06/20/2012CN202280457U 一种微控制处理器串口通信模块 A micro processor controlled serial communication module
06/20/2012CN202280456U 水泥头胶塞下行指示装置 Cement head stopper downward pointing device
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