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)
11/2010
11/10/2010EP2247822A1 System for spatially monitoring a borehole in real-time
11/10/2010CN201627579U Continuous-wave generator with bidirectional wheel
11/10/2010CN201627578U External well-bottom while-drilling engineering parameter monitoring device
11/10/2010CN201627577U True triaxial drilling-plugging simulation and evaluation device
11/10/2010CN201627576U Oil well intelligent paperless oil data acquisition unit
11/10/2010CN201627557U Fishing tool of wireless drilling inclinometer
11/10/2010CN1657744B Apparatus and method for acquiring information while drilling
11/10/2010CN1244742B High electric resistance earthing system for oil well electric system
11/10/2010CN101881959A Network transmission imaging well logging ground-based system
11/10/2010CN101881708A Sand core test piece used for testing performance of drilling fluid and preparation and application thereof
11/10/2010CN101881158A Pipe fluid pressure pulse signal generator
11/10/2010CN101881157A Sound wave well logging transducer
11/10/2010CN101881156A Primary measurement shell for measurement while-drilling instrument
11/10/2010CN101881155A Wired measurement and transmission motor for measurement while-drilling instrument
11/10/2010CN101881154A Mechanical oil recovery testing platform
11/10/2010CN101881153A Conventional logging information fusion visualization method and system thereof
11/10/2010CN101881152A Logging tool having shielded triaxial antennas
11/10/2010CN101881133A Rotary drilling rig and deep sounding apparatus thereof
11/10/2010CN101498296B Measuring means for oilfield oil pump indicating diagram without load transducer
11/09/2010US7830749 Method of filtering pump noise
11/09/2010US7828066 Magnetic motor shaft couplings for wellbore applications
11/09/2010US7828063 Rock stress modification technique
11/09/2010US7828060 Drifting tubing
11/09/2010US7827859 Apparatus and methods for obtaining measurements below bottom sealing elements of a straddle tool
11/09/2010CA2620448C Determining wellbore position within subsurface earth structures and updating models of such structures using azimuthal formation measurements
11/09/2010CA2591698C Whipstock, running/retrieval tool and a system for tieing back a liner from a wellbore casing
11/09/2010CA2544111C Anti-symmetrized electromagnetic measurements
11/04/2010WO2010126998A2 Method for determining wettability of an oil reservoir
11/04/2010WO2010125439A1 Methods and apparatus to optically determine velocities of downhole fluids
11/04/2010WO2010083388A3 Estimating petrophysical parameters and invasion profile using joint induction and pressure data inversion approach
11/04/2010US20100280757 Multi-Phase Fluid Measurement Apparatus and Method
11/04/2010US20100276197 Measurements while drilling or coring using a wireline drilling machine
11/04/2010CA2759886A1 Methods and apparatus to optically determine velocities of downhole fluids
11/04/2010CA2701680A1 Logging tool having shielded triaxial antennas
11/03/2010EP2245265A2 Monitoring downhole production flow in an oil or gas well
11/03/2010CN201620887U Machine-acquiring testing pipe-string for floating drilling rig
11/03/2010CN201620886U Slurry filter device of wireless inclinometer
11/03/2010CN201620885U Low power consumption probe for underground measurement while drilling in coal mine
11/03/2010CN201620884U Manchester drive circuit
11/03/2010CN201620883U Oil well manometer support tube
11/03/2010CN201620882U Permanent pressure measurement system
11/03/2010CN201620881U Well drilling operation process monitoring instrument
11/03/2010CN201620880U Automatic gain control circuit for oil well liquid level testing
11/03/2010CN201620879U While-drilling inclination measurement device for nearly horizontal directional long drill hole of underground coal mine
11/03/2010CN201620878U Gyro azimuthal orientation instrument
11/03/2010CN201620877U Main valve core of wireless inclinometer
11/03/2010CN201620876U Main valve core dismounting tool of wireless drilling gradient meter
11/03/2010CN201620875U Main valve barrel and main valve block for pulse generator of wireless inclinometer
11/03/2010CN201620874U Nine-parameter logging instrument
11/03/2010CN201620873U Automatic timing oil gauge device
11/03/2010CN201620872U Downhole tracer injection device
11/03/2010CN201620871U Well cementation weak interface micro unit stimulating device
11/03/2010CN201620870U Logging steel wire groove-jumping-preventing device
11/03/2010CN201620869U Downhole testing and adjusting instrument with oilfield layered water flooding dual flow meters arranged above and underneath
11/03/2010CN201620823U Horizontal well pressure control electric multiple-current test valve
11/03/2010CN201620785U Pressure-controlled hydraulic pushing tool
11/03/2010CN201620767U Pipe column using technologies of multilayer mining, testing pressure by layers and obtaining yield by layers
11/03/2010CN1948707B Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor
11/03/2010CN1863986B Multimode acoustic imaging in cased wells
11/03/2010CN101878434A Method for characterizing a geological formation traversed by a borehole
11/03/2010CN101878351A Real-time completion monitoring with acoustic waves
11/03/2010CN101878350A Downhole, single trip, multi-zone testing system and downhole testing method using such
11/03/2010CN101876245A Shell of electromagnetic wave resistivity instrument
11/03/2010CN101876244A Inertia measuring unit and continuous inclinometer for dynamically tuned gyroscope
11/03/2010CN101131089B Push-pull type multi-arm righting hole diameter micrologging instrument
11/02/2010US7827014 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations
11/02/2010US7823661 In-drilling alignment
11/02/2010US7823660 Apparatus and methods for drilling a wellbore using casing
11/02/2010CA2605441C Multi-purpose downhole tool
11/02/2010CA2545222C Signalling method and apparatus
11/02/2010CA2460079C Deployable mandrel for downhole measurements
10/2010
10/28/2010WO2010123746A2 Televiewer image wood-grain reduction techniques
10/28/2010WO2010123566A1 Pressure sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation
10/28/2010WO2010123494A1 System and method of predicting gas saturation of a formation using neural networks
10/28/2010WO2010121346A1 Drill bit assembly having electrically isolated gap joint for measurement of reservoir properties
10/28/2010WO2010121345A1 Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry
10/28/2010WO2010102275A3 Apparatus for electrical power and/or data transfer between rotating components in a drill string
10/28/2010WO2010102130A3 Apparatus and method for formation testing
10/28/2010WO2010102110A3 Methods, system and computer program product for delivering well data
10/28/2010WO2010099484A3 System and method for wellbore monitoring
10/28/2010WO2010088228A3 Adjustable downhole motors and methods for use
10/28/2010WO2010083261A3 Directional drilling control devices and methods
10/28/2010US20100271009 Tracking positions of personnel, vehicles, and inanimate objects
10/28/2010CA2790841A1 Pressure sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation
10/28/2010CA2759488A1 Televiewer image wood-grain reduction techniques
10/28/2010CA2744734A1 Pressure sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation
10/28/2010CA2701524A1 Method for modeling a heterogeneous underground environment from multipoint statistics
10/27/2010EP2243924A1 Methods and Associated Apparatus for Downhole Data Retrieval, Monitoring and Tool Actuation
10/27/2010EP2242899A1 Electromagnetic telemetry assembly with protected antenna
10/27/2010CN201614931U 一种连续测量的石油勘探用短节探头 A continuous measurement of oil exploration with a short section of the probe
10/27/2010CN201614930U 油井产量称重法计量装置 Oil production weighing method measuring device
10/27/2010CN201614926U 用于复合射孔与全通径地层测试联作的减震装置 Composite perforation formation testing and full-bore shock absorber for joint operation
10/27/2010CN1997916B Acoustic telemetry transceiver
10/27/2010CN1723332B Method and apparatus for logging a well using a fiber optic line and sensors
10/27/2010CN101871346A Dual-direction-measurement multi-arm borehole measuring apparatus
10/27/2010CN101871345A Tray (well) diameter detector
10/27/2010CN101871344A Weighing method for determining liquid level in wellbore of gas well
10/27/2010CN101871343A Rotation type multi-station tension and compression experiment device
10/27/2010CN101871340A Ultrasonic measured and controlled water distributing device
10/27/2010CN101238465B Well modeling associated with extraction of hydrocarbons from subsurface formations
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