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)
04/2010
04/15/2010US20100089128 Apparatus for leakage testing and/or pressure testing of a portion of a pipe and also a method for use of same
04/15/2010CA2739593A1 Method for correcting the measured concentrations of gas components in drilling mud
04/14/2010EP2175100A1 Three dimensional steerable system
04/14/2010CN201437725U Rotary pressure measurement device at mouth of oil well
04/14/2010CN201437724U Three-dimensional high-temperature high-pressure oil-gas migration physical simulation device
04/14/2010CN201437723U Automatic control device for horizontal logging
04/14/2010CN201437722U Current collector capable of automatically controlling separation of gas for measuring production profile of oil well
04/14/2010CN201437701U Well test vehicular lubricator anti-freezing and unfreezing device
04/14/2010CN101694163A Determination method of deep tunnel roof support forms and support depth
04/14/2010CN101694159A Technology for rapidly constructing air shaft under chill condition and process for sinking vertical shaft pit shaft
04/14/2010CN101694156A Dipole acoustic small-signal processing unit
04/14/2010CN101694155A Underground eight-unit circumferential scanning sound-wave radiator
04/14/2010CN101694154A Intelligent temperature measurement instrument for coal mine
04/13/2010US7697141 In situ optical computation fluid analysis system and method
04/13/2010US7695629 Microfluidic separator
04/13/2010US7694735 Sonde
04/13/2010US7694734 Method and apparatus for insulating a resonator downhole
04/13/2010US7694558 Downhole washout detection system and method
04/13/2010CA2538310C Downlink telemetry system
04/08/2010WO2010039357A2 Logging tool with antennas having equal tilt angles
04/08/2010WO2010039317A1 Robust well trajectory planning
04/08/2010WO2010039061A1 Method for determining the current condensate saturation in the bottomhole zone of a well in a gas condensate reservoir bed
04/08/2010WO2010039060A1 Method for determining the current gas saturation in the bottomhole zone of a well in a volatile oil deposit
04/08/2010WO2010037729A1 Method and system for producing hydrocarbon fluid through a well with a sensor assembly outside the well casing
04/08/2010WO2010037478A1 Fibre optic tape assembly
04/08/2010WO2010003080A3 Method for estimating the probability of collision between wells
04/08/2010WO2009155316A4 System, program product, and related methods for estimating and managing crude gravity in flowlines in real-time
04/08/2010US20100084192 Method of downlinking to a downhole tool
04/08/2010US20100084191 Combining belief networks to generate expected outcomes
04/08/2010US20100084132 Optical Coiled Tubing Log Assembly
04/08/2010DE102009041750A1 Elektrisch nicht leitende Büchse zur Verwendung bei der Bohrlochinstrumentierung Electrically non-conductive sleeve for use in the downhole instrumentation
04/08/2010CA2738998A1 Fibre optic tape assembly
04/08/2010CA2736925A1 Method and system for producing hydrocarbon fluid through a well with a sensor assembly outside the well casing
04/07/2010EP2172619A1 Fibre optic tape assembly
04/07/2010EP2172618A2 Actuating downhole devices in a wellbore
04/07/2010EP2171206A2 Downhole applications of composites having aligned nanotubes for heat transport
04/07/2010CN101691841A Circuit used for petroleum underground three-dimensional acoustic wave signal receiving sensor array
04/07/2010CN101691840A Water level observation well and construction method thereof
04/06/2010US7692428 Retrievable formation resistivity tool
04/06/2010US7690425 Data logger plunger and method for its use
04/06/2010CA2680958A1 Reservoir management linking
04/06/2010CA2565898C Electrical connection assembly
04/06/2010CA2482384C Semi-conductive shell for sources and sensors
04/06/2010CA2472825C Drill string rotation encoding
04/06/2010CA2382171C Smart shuttles to complete oil and gas wells
04/01/2010WO2010036832A2 Downhole vibration monitoring for reaming tools
04/01/2010WO2010036599A2 System and method for modeling fluid flow profiles in a wellbore
04/01/2010WO2010036244A1 Downhole electronics with pressure transfer medium
04/01/2010WO2010035099A1 Apparatus for azimuth measurements using gyro sensors
04/01/2010WO2010035098A2 High- temperature downhole devices
04/01/2010WO2010035042A2 Method of testing a pipeline cut
04/01/2010WO2010009411A3 Hydrocarbon determination in presence of electron and chemical ionization
04/01/2010WO2010006052A3 System and method for generating true depth seismic surveys
04/01/2010WO2009152341A3 Vector migration of virtual source vsp data
04/01/2010WO2009141160A3 System and method for depth measurement and correction during subsea intervention operations
04/01/2010US20100082256 Downhole Drilling Vibration Analysis
04/01/2010US20100078216 Downhole vibration monitoring for reaming tools
04/01/2010US20100078166 Tubing expansion
04/01/2010US20100078165 Determining formation wettability from dielectric measurements
04/01/2010US20100078164 Permanent downhole deployment of optical sensors
04/01/2010US20100077623 Aparatus for azimuth measurements using gyro sensors
04/01/2010CA2738204A1 High-temperature downhole devices
04/01/2010CA2738040A1 Apparatus for azimuth measurements using gyro sensors
04/01/2010CA2737691A1 System and method for modeling fluid flow profiles in a wellbore
04/01/2010CA2736542A1 Downhole vibration monitoring for reaming tools
03/2010
03/31/2010EP2169179A1 Method and device for recognising the depth level in a bore hole
03/31/2010EP2167789A2 Method and apparatus for geobaric analysis
03/31/2010CN201433789Y Ascending hole coal-bed gas pressure detection water pressure eliminator
03/31/2010CN201433788Y Descending hole coal-bed gas pressure detection water pressure eliminator
03/31/2010CN201433759Y Portable field data playback device
03/31/2010CN201433758Y Hydraulic damping type vibration absorption pressure gauge supporting cylinder
03/31/2010CN201433757Y Cabled direct-reading pressure gauge
03/31/2010CN201433747Y Vine pipe device for oil and gas wells
03/31/2010CN101688439A Christmas tree with internally positioned flowmeter
03/31/2010CN101688436A Rock drill apparatus
03/31/2010CN101684729A Coal-seam gas pressure test system
03/30/2010US7686099 Downhole positioning system
03/30/2010US7686078 Well jet device and the operating method thereof
03/30/2010US7686077 Methods and apparatus for determining wellbore parameters
03/30/2010US7685732 Orientation sensing apparatus and a method for determining an orientation
03/30/2010CA2679253A1 Method for borehole correction, formation dip and azimuth determination and resistivity determination using multiaxial induction measurements
03/30/2010CA2499901C Remote intervention logic valving method and apparatus
03/30/2010CA2492623C Gyroscopically-oriented survey tool
03/29/2010CA2680992A1 Tagged particles for downhole application
03/25/2010WO2010013004A3 Downhole communication
03/25/2010WO2010010487A3 System and method for drilling a borehole
03/25/2010WO2010005762A3 Well log normalization
03/25/2010WO2009149038A3 Systems and methods for providing wireless power transmissions and tuning a transmission frequency
03/25/2010WO2009125293A3 Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions
03/25/2010US20100076740 System and method for well test design and interpretation
03/25/2010US20100071955 Sub-surface imaging using antenna array for determing optimal oil drilling site
03/25/2010US20100071910 Method and system for using wellbore instruments with a wired pipe string
03/25/2010US20100071897 Method for optimizing well production in reservoirs having flow barriers
03/25/2010US20100071896 Downhole apparatus and method
03/24/2010EP2165219A1 Improved pulse signaling for downhole telemetry
03/24/2010CN201430369Y Hydraulic shear device for petroleum logging and perforated cables
03/24/2010CN201428450Y Acoustic system of octa-sector cement bond imaging log
03/24/2010CN201428449Y Multifunctional upright tube pressure testing device
03/24/2010CN201428448Y Deep well grouting decompression device with underground pressure measurement and aboveground throttling control
03/24/2010CN201428447Y Remote measuring device of oil well diagram
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