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)
09/2012
09/12/2012CN202431260U Gas drive oil extraction device being convenient in detection
09/12/2012CN202431226U Rotator for sucker rod
09/12/2012CN202431218U Blowout prevention high-pressure resistance bypass nipple
09/12/2012CN102667058A A multi-step solvent extraction process for heavy oil reservoirs
09/12/2012CN102661146A Method for discontinuously acquiring underground pressure pulse of inflatable bored well
09/12/2012CN102661145A Electromagnetic wave wireless drilling-following measurement system capable of being replaced without pullout
09/12/2012CN102661144A Method for determining anchoring depth of anchor cable along deep lane wall of empty crossheading entity coal side
09/12/2012CN102661143A Device and method for detecting thickness of sediments at bottom of drilling hole based on hardness difference sensing
09/12/2012CN102661142A Method and device for measuring productivity of oil well
09/12/2012CN102661141A Method and device for metering oil in oil-water separator
09/11/2012US8261607 System and method for sensing pressure using an inductive element
09/11/2012CA2692691C Detecting acoustic signals from a well system
09/11/2012CA2657591C Pulsed-neutron formation density
09/11/2012CA2550821C System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
09/07/2012WO2012119092A2 Synthetic formation evaluation logs based on drilling vibrations
09/07/2012WO2012118891A2 Methods and apparatuses for synchronization of downhole tool with remote transmitters and sensors
09/07/2012WO2012118824A2 System for logging while running casing
09/07/2012WO2012118807A2 Lateral well drilling apparatus and method
09/07/2012WO2012116984A2 Tubular component for drill stem capable of being cabled, and method for mounting a cable in said component
09/07/2012WO2012068219A3 Nuclear magnetic resonance tool with external magnets
09/07/2012WO2012064855A3 Underground drilling apparatus
09/06/2012US20120223839 Apparatus and Method for Measuring Weight and Torque at Downhole Locations while Landing, Setting, and Testing Subsea Wellhead Consumables
09/06/2012US20120222899 Spindle for mud pulse telemetry applications
09/05/2012EP2495392A2 Determining fluid rate and phase information for a hydrocarbon well using predictive models
09/05/2012EP2495389A1 Drilling rod
09/05/2012EP2494151A2 System and method for determining stretch or compression of a drill string
09/05/2012EP2494150A1 Positioning tool
09/05/2012EP2494149A1 Azimuth initialization and calibration of wellbore surveying gyroscopic and inertial instruments by means of an external navigation system
09/05/2012EP2494148A1 Magnetic ranging system for controlling a drilling process
09/05/2012EP2494147A1 Scanning tool
09/05/2012EP2494135A1 Downhole apparatus
09/05/2012CN202417600U Full-fiber temperature monitoring system in underground gob of coal mine
09/05/2012CN202417486U Safe wireless data gathering and monitoring device for oil well
09/05/2012CN202417485U Real-time monitoring system for well drilling well kick leakage
09/05/2012CN202417484U Support cylinder of electronic manometers
09/05/2012CN202417483U Multi-functional test probe for thermobarograph
09/05/2012CN202417482U High-temperature high-pressure high-accuracy electronic manometer applied to oil and gas fields
09/05/2012CN202417481U Circuits and device for realizing depth and speed measurement in ground system for oil well logging
09/05/2012CN202417480U Directional well continuous gyroscopic inclinometer system
09/05/2012CN202417479U Oil filled headstall sealed torpedo
09/05/2012CN202417478U Protector for fixed sensor of oil extractor
09/05/2012CN202417477U Physical simulation visual experimental device
09/05/2012CN202417476U Automatically continuous oil measuring device with U-shaped tube and integrator
09/05/2012CN202417475U Pumping rod displacement and load sensing device for oil well
09/05/2012CN202417474U Composite simulation test oil well
09/05/2012CN202417473U Novel comprehensive test system for production parameters of oil well
09/05/2012CN202417472U Multicore crawler
09/05/2012CN202417471U Clutch cam mechanism for bouncing out and taking back adjustable arm of underground measuring and adjusting instrument
09/05/2012CN202417470U Circuit combination fixing device
09/05/2012CN202417458U Intelligent cable type measuring and adjusting water injection device for water injection well
09/05/2012CN202417405U Underground digital type intelligent water plugging system for water injection well
09/05/2012CN202417342U Drilling tool joint convenient for inclination measurement operation
09/05/2012CN202417330U Drilling anti-collapse device suitable for embedding pore pressure gauge in different depths
09/05/2012CN1991128B Well depth monitoring method and device
09/05/2012CN102654052A Improved well logging remote transmission system and method
09/05/2012CN102654051A Apparatus and method for measuring weight and torque at downhole locations while landing, setting and testing subsea wellhead consumables
09/05/2012CN102654050A Oil-gas migration and accumulation module for continuous lithologic oil-gas reservoir
09/05/2012CN102654046A Top air-injection gravity auxiliary driving oil-extraction two-dimensional physical simulation experiment system
09/05/2012CN102654045A Top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system
09/05/2012CN102071961B Downward gas drainage drill hole and pressure testing drill hole sealing method
09/05/2012CN101824981B Test string for stimulating produced liquid section of pumping unit
09/05/2012CN101644147B Feeding and salvaging tool of electronic single/multi-point measurement instrument suitable for gas drilling
09/05/2012CN101583885B Automatic adjustment of nmr pulse sequence to optimize snr based on real time analysis
09/05/2012CN101581218B Device and method for convenient measurement while drilling of coal bed gas parameters
09/05/2012CN101550823B Method and device for improving the accuracy of flow rate test of flowmeter used for water injection wells in oil fields
09/05/2012CN101539015B Underground wireless pressure transmission transmitter
09/05/2012CN101532383B Pressure temperature measuring device for perforating and fracturing
09/05/2012CN101525998B Ground signal receiving device for electromagnetic measurement while drilling system and receiving method thereof
09/05/2012CN101403295B Water-plugging direct-reading delamination pressure testing working barrel
09/05/2012CN101403284B Down-hole tool and controllable segment sealing device for down-hole working barrel seal
09/05/2012CN101203659B Downhole position locating device with fluid regulating feature
09/05/2012CN101065555B Methods and apparatus for communicating across casing
09/04/2012US8258975 Communication system for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons
09/04/2012US8256565 Enclosures for containing transducers and electronics on a downhole tool
09/04/2012US8256282 In situ determination of critical desorption pressures
08/2012
08/30/2012WO2012116204A2 Integrated reaming and measurement system and related methods of use
08/30/2012WO2012115997A2 Apparatus and method for increasing the ultimate recovery of natural gas contained in shale and other tight gas reservoirs
08/30/2012WO2012115717A2 Nanotag indentification systems and methods
08/30/2012WO2012115630A1 Method and systems of determining viable hydraulic fracture scenarios
08/30/2012WO2012012637A4 Smart seals and other elastomer systems for health and pressure monitoring
08/30/2012US20120218863 Inground drill string housing and method for signal coupling
08/30/2012US20120217009 Positioning tool
08/30/2012US20120217008 System and Method for Stress Field Based Wellbore Steering
08/30/2012US20120217007 Acoustic monitoring of hydrocarbon production
08/30/2012US20120216628 Method and Apparatus for Differential Pressure Measurement
08/30/2012DE112009003710T5 Vorrichtung und Verfahren zum Anbringen von Schallsensoren näher an einer Bohrlochwand Apparatus and method for applying sound sensors closer to a borehole wall
08/30/2012CA2827904A1 Apparatus and method for increasing the ultimate recovery of natural gas contained in shale and other tight gas reservoirs
08/30/2012CA2827763A1 Use of micro-electro-mechanical systems (mems) in well treatments
08/30/2012CA2825430A1 Method and systems of determining viable hydraulic fracture scenarios
08/29/2012WO2013126039A1 Sneak path eliminator for diode multiplexed control of downhole well tools
08/29/2012EP2491660A1 System for communicating over a power cable
08/29/2012EP2491435A1 Microresistivity imaging in conductive and nonconductive drilling fluid
08/29/2012EP2491434A1 Microresistivity imaging at multiple depths of investigation
08/29/2012EP2491226A2 Electrical conduction across interconnected tubulars
08/29/2012EP2491225A2 Through drillstring logging systems and methods
08/29/2012CN202405472U Circuit grounding device for while-drilling instrument
08/29/2012CN202402026U Duplex-pressure detecting device for same-well extraction-injection system in electric submersible pump well
08/29/2012CN202402025U Inclinometer
08/29/2012CN202402024U Spiral pipe structure for blocking media and transmitting pressure
08/29/2012CN202402023U Exploring tube system for underground wireless well logging during drilling
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