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)
05/2010
05/19/2010CN101709638A Novel optical fiber temperature and pressure sensor
05/19/2010CN101709629A Reverse circulation aerodynamic cavitation method for coalbed methane well and equipment
05/19/2010CA2685827A1 A downhole modulator apparatus
05/18/2010US7717194 Borehole drilling control system, method and apparatus
05/18/2010US7717172 Methods and apparatus to sample heavy oil from a subteranean formation
05/18/2010US7717167 Switchable power allocation in a downhole operation
05/18/2010US7716979 Method and apparatus for the testing of downhole injection assemblies
05/18/2010US7716978 High resolution capacitance high conductivity fluid sensor
05/18/2010CA2684273A1 Method of placing ball sealers for fluid diversion
05/18/2010CA2558447C Multiple distributed pressure measurements
05/18/2010CA2339556C Drill string telemetry with insulator between receiver and transmitter
05/14/2010WO2010054387A2 Method and apparatus for echo-peak detection for circumferential borehole image logging
05/14/2010WO2010054375A2 Emat acoustic signal measurement using modulated gaussian wavelet and hilbert demodulation
05/14/2010WO2010054353A2 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor
05/14/2010WO2010053378A2 Flow control device and flow control method
05/14/2010WO2010052126A1 Method for measuring temperature and/or pressure at a pipeline, particularly in the offshore area of oil and gas extraction plants
05/14/2010WO2010027616A3 Electrical transmission between rotating and non-rotating members
05/14/2010WO2010021877A3 Subterranean survey communication system and technique
05/14/2010WO2010019731A3 Extraction of processed borehole image elements to create a combined image
05/14/2010WO2010017302A3 Heat dissipater for electronic components in downhole tools and methods for using the same
05/14/2010WO2010014521A3 Method and apparatus for imaging boreholes
05/14/2010WO2010010455A3 System and method for automating exploration of production of subterranean resources
05/14/2010WO2010004393A3 Nmr logging of miscible displacement
05/14/2010WO2010002791A3 Forward models for gamma ray measurement analysis of subterranean formations
05/14/2010CA2742952A1 Flow control device and flow control method
05/14/2010CA2742479A1 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor
05/13/2010US20100118657 Bit Based Formation Evaluation and Drill Bit and Drill String Analysis Using an Acoustic Sensor
05/13/2010US20100116550 Interface and method for wellbore telemetry system
05/13/2010US20100116492 Locator tool and methods of use
05/13/2010US20100116490 Active control and/or monitoring of expandable tubular devices
05/12/2010EP2184438A2 Equipment for optical measurement of double temperature and pressure and of flow rate and respective handling tool
05/12/2010EP2183465A2 Tool face sensor method
05/12/2010DE102008056087A1 Verfahren zur Messung von Temperatur und/oder Druck an einer Rohrleitung, insbesondere im Offshore-Bereich von Öl- und Gasförderanlagen, und zugehörige Vorrichtung A method for measurement of temperature and / or pressure in a pipe, particularly in the offshore oil and gas production facilities, and related apparatus
05/12/2010DE102008056011A1 Ground water stand measurement device, has sensor for detecting contact of ground water surface with solder body, where closed circuit flow is produced between measurement site and remote display unit without electrical conductors
05/12/2010CN201460981U Gas storage well monitoring and early warning device
05/12/2010CN201460882U High-reliability high-stability acoustic wave logging low-frequency transmission energy converter
05/12/2010CN201460881U Device of continuous current judgment oil extraction well wax period
05/12/2010CN201460880U Logging cable thruster
05/12/2010CN201460879U Detecting device of downhole position
05/12/2010CN201460878U Pressure measuring device for oil-water well pipe column
05/12/2010CN201460877U Comprehensive test system of drill hole packer test
05/12/2010CN201460876U Automatic detecting device for underground water levels
05/12/2010CN201460875U Radar telemetering direct-reading liquid level alarm device
05/12/2010CN201460874U Pumped well water level measuring instrument
05/12/2010CN201460873U Electric sounding tester for liquid level of oil well
05/12/2010CN201460872U Downhole locating device
05/12/2010CN201460871U Disconnectable cable bridge device for floating drilling rig
05/12/2010CN201460870U 31 turn 37 core nipple
05/12/2010CN201460869U Belt-inside positioning quick connecting structure for well measuring instrument
05/12/2010CN201460868U Physical analog device for tectonic deformation and oil-gas migration
05/12/2010CN201460867U Steelwire cable coaxial transfer drum device for conventional well testing winch
05/12/2010CN201460866U Unidirectional flow detecting device
05/12/2010CN201460865U Well logging and regulating instrument of two flow meters arranged from top to bottom
05/12/2010CN201460864U Multilevel transmission structure for underground formation parameter measurement during drilling
05/12/2010CN201460862U Segmented magnet sensing array system for controlling direction of counter-through of long-distance and large-caliber oil and gas pipeline
05/12/2010CN201460799U Concentric integrated water-plugging finding pipe column
05/12/2010CN201460790U Safe and environment-friendly test lubricator
05/12/2010CN201460763U Centralizer for petroleum logging instrument
05/12/2010CN1861982B Gravity cable winding float-type water gage
05/12/2010CN1807833B Slips type down-hole instrument hanger
05/12/2010CN101706650A Multi-sensor system
05/12/2010CN101705815A Analog experimental device of supercritical carbon dioxide drilling fluid
05/12/2010CN101705814A Advancing direction measurement method of vertical and slant orepasses
05/12/2010CN101705813A Wireless sensor network based drilling well site monitoring system
05/12/2010CN101705812A Large-discharge single pipe layered polymer injection and injection allocation method and device
05/12/2010CN101029565B Method for logging open-hole direction sound wave
05/11/2010US7714741 Method and system for performing operations and for improving production in wells
05/11/2010US7712527 Use of micro-electro-mechanical systems (MEMS) in well treatments
05/11/2010US7712524 Measuring a characteristic of a well proximate a region to be gravel packed
05/11/2010CA2486265C Combined bragg grating wavelength interrogator and brillouin backscattering measuring instrument
05/11/2010CA2456209C Measurement of curvature of a subsurface borehole, and use of such measurement in directional drilling
05/06/2010WO2010051093A1 Electrically conductive methods for heating a subsurface formation to convert organic matter into hydrocarbon fluids
05/06/2010WO2010049608A1 Geochemical monitoring of a geological co2 storage site using associated rare-gas chemical ratios
05/06/2010WO2010031052A3 Method of determining borehole conditions from distributed measurement data
05/06/2010WO2010021837A3 Determining characteristics of a subterranean body using pressure data and seismic data
05/06/2010WO2010019879A3 Apparatus and method for generating sector residence time images of downhole tools
05/06/2010WO2010014945A3 System and method for controlling the integrity of a drilling system
05/06/2010WO2010002601A3 Well log correlation
05/06/2010WO2010002270A3 Trigger device for activating an action
05/06/2010WO2009158189A8 Detecting a structure in a well
05/06/2010WO2009101289A3 Determining a heat profile of the drilling fluid in a well during the course of drilling
05/06/2010US20100111592 Threaded Retention Device for Downhole Transmission Lines
05/06/2010US20100110833 Pressure release encoding system for communicating downhole information through a wellbore to a surface location
05/06/2010US20100108391 Drill bit assembly and method of performing an operation in a wellbore
05/06/2010US20100108386 System, apparatus, and method of conducting measurements of a borehole
05/06/2010US20100108385 Downhole Jack Assembly Sensor
05/06/2010US20100108383 Drilling Apparatus and Method
05/06/2010US20100108380 Methods and apparatuses for estimating drill bit cutting effectiveness
05/06/2010US20100108379 Systems and methods of forming subsurface wellbores
05/06/2010US20100108313 Coiled tubing conveyed combined inflow and outflow control devices
05/06/2010US20100108312 Method of Using a Charged Chamber Pressure Transmitter for Subterranean Tools
05/06/2010US20100108306 Vibration damping system for drilling equipment
05/06/2010US20100107754 Distributed acoustic wave detection
05/06/2010US20100107753 Method of detecting a lateral boundary of a reservoir
05/06/2010CA2738873A1 Electrically conductive methods for heating a subsurface formation to convert organic matter into hydrocarbon fluids
05/05/2010EP2182167A2 Memory Logging System for Determining the Condition of a Sliding Sleeve
05/05/2010EP2182165A2 Drilling apparatus and method
05/05/2010CN201448107U Downhole device of sensing logging instrument
05/05/2010CN201448106U Three-parameter seal examining instrument
05/05/2010CN201448105U Device for automatically measuring movable liquid level in oil well by double sound sources
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