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)
03/2008
03/27/2008US20080073122 Estimating Formation Temperature Near a Borehole and Using Same For Estimating a Property of the Formation
03/27/2008US20080073084 Distributed Temperature Sensing in Deep Water Subsea Tree Completions
03/27/2008US20080073077 Coiled Tubing Tractor Assembly
03/27/2008CA2664472A1 Downhole noise cancellation in mud-pulse telemetry
03/27/2008CA2664018A1 Device and method for detecting an anomaly in an assembly of a first and a second object
03/27/2008CA2663923A1 Contact-less sensor cartridge
03/26/2008EP1903181A1 Contact-less sensor cartridge
03/26/2008EP1903178A2 Three dimensional steerable system
03/26/2008EP1902196A1 Method and apparatus for collecting drill bit performance data
03/26/2008CN201042086Y Heating device for inductive instrument
03/26/2008CN201041505Y Drilling mud level alarming device
03/26/2008CN201041037Y Petroleum exploration logging instrument data gathering device
03/26/2008CN201041036Y Borehole diameter gauge
03/26/2008CN201041035Y Push-the-bit temperature logging instrument
03/26/2008CN201041034Y Sensor for measuring downhole temperature
03/26/2008CN201041033Y Capillary dynamic stratification pressure monitor
03/26/2008CN201041032Y Split type wireless on-drilling declinator
03/26/2008CN201041031Y Six-arm dip logging instrument
03/26/2008CN201041030Y Nios soft core CPU based continuous inclined data gathering device
03/26/2008CN201041029Y Oil well cement weight loss and gas-liquid cross flow simulated test device
03/26/2008CN201041028Y Multifunctional monitoring control system for oil production well
03/25/2008US7348894 Method and apparatus for using a data telemetry system over multi-conductor wirelines
03/25/2008US7347280 Establishing positions of locating field detectors and path mapping in underground boring tool applications
03/25/2008US7347278 Secure activation of a downhole device
03/25/2008US7347275 Apparatus and method to detect actuation of a flow control device
03/25/2008US7347271 Wireless communications associated with a wellbore
03/25/2008US7347261 Magnetic locator systems and methods of use at a well site
03/25/2008US7347260 Method for determining tracer concentration in oil and gas production fluids
03/25/2008CA2494237C Drill tool shaft-to-housing locking device
03/25/2008CA2458246C Passive ranging techniques in borehole surveying
03/25/2008CA2316265C Method and apparatus for ultrasonic imaging of a cased well
03/25/2008CA2226530C Fluid line with integral conductor
03/20/2008WO2008034028A1 Fiber optic sensors in mwd applications
03/20/2008WO2008033967A1 Instantaneous measurement of drillstring orientation
03/20/2008WO2008033738A2 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus
03/20/2008WO2008033226A2 Method for using logging device with down-hole transceiver for operation in extreme temperatures
03/20/2008WO2008033225A2 Logging device with down-hole transceiver for operation in extreme temperatures
03/20/2008WO2008032194A2 Methods and systems for wellhole logging utilizing radio frequency communication
03/20/2008WO2008031923A1 Flow meter
03/20/2008WO2008031914A1 Measuring head and measuring method
03/20/2008WO2008008386A9 Modular geosteering tool assembly
03/20/2008US20080069992 Submergible Motor Protector Bag
03/20/2008US20080068929 Oscillating shear valve for mud pulse telemetry
03/20/2008US20080068210 Downlink based on pump noise
03/20/2008US20080068019 Flux Orientation Locating in a Drilling System
03/20/2008US20080066962 Apparatus and Methods for Measurement of Solids in a Wellbore
03/20/2008US20080066961 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus
03/20/2008US20080066960 Fiber Optic Sensors in MWD Applications
03/20/2008US20080066959 Method and apparatus for collecting drill bit performance data
03/20/2008US20080066905 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus
03/20/2008US20080066903 Method and system for accessing subterranean deposits from the surface and tools therefor
03/20/2008US20080066537 Systems and Methods for Downhole Fluid Compatibility
03/20/2008US20080066534 Obtaining and evaluating downhole samples with a coring tool
03/20/2008CA2664523A1 Fiber optic sensors in mwd applications
03/20/2008CA2662742A1 Measuring head and measuring method
03/20/2008CA2662108A1 Flow meter
03/19/2008EP1899574A1 Well having inductively coupled power and signal transmission
03/19/2008EP1702136B1 Controlling a fluid well
03/19/2008CN201037417Y Bridge type delamination measuring and sealing structure
03/19/2008CN201037416Y Mine mouth pressure testing device
03/19/2008CN201037415Y Kick and circulation loss monitoring system
03/19/2008CN201037414Y Thick oil thermal production well dynamic liquid level measuring switch device
03/19/2008CN201037413Y Portable well logger maintaining and testing device
03/19/2008CN201037412Y single-well floating ball continuous metering device
03/19/2008CN201037411Y Well logger scale device and system thereof
03/19/2008CN201037410Y Down-hole pipe column stress and displacement detecting device
03/19/2008CN201037409Y Well logging magnetic suspension turbine flowmeter
03/19/2008CN201037400Y Pipe column switch for finding water
03/19/2008CN101144380A High sensitivity lateral opening optical fiber optical grating temperature pressure sensing detecting system unrelated with polarization
03/19/2008CN101144379A Inclinometer pipe used for drilling displacement and water-level same-pore measurement
03/18/2008US7346455 Wellbore evaluation system and method
03/18/2008US7345594 Noise attenuation apparatus for borehole telemetry
03/18/2008US7345486 Position and orientation locator/monitor
03/18/2008US7343983 Method and apparatus for isolating and testing zones during reverse circulation drilling
03/18/2008US7343970 Real time optimization of well production without creating undue risk of formation instability
03/18/2008CA2442873C Method of using underbalanced well data for seismic attribute analysis
03/18/2008CA2382438C System for enhancing fluid flow in a well
03/15/2008CA2601297A1 Submergible motor protector bag
03/13/2008WO2008031021A2 A telemetry apparatus and method for monitoring a borehole
03/13/2008WO2008030620A1 Method of and system for determining the free point in a drill pipe
03/13/2008WO2008030136A1 Well jet plant for well logging at normal formation pressures and a method of the operation thereof
03/13/2008WO2008028277A1 Optical device for measuring a physical parameter in a hydrogen contaminated sensing zone
03/13/2008US20080065344 Processing Sensing Measurements
03/13/2008US20080065331 Method and apparatus for collecting drill bit performance data
03/13/2008US20080060848 Method and apparatus for collecting drill bit performance data
03/13/2008US20080060847 Method and apparatus for transmitting sensor response data and power through a mud motor
03/13/2008US20080060808 Method of and system for determining the free point in a drill pipe
03/13/2008US20080060807 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008US20080060806 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008US20080060805 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008US20080060804 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008US20080060800 Method and system for accessing subterranean deposits from the surface
03/13/2008US20080060799 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008US20080060571 Method and system for accessing subterranean deposits from the surface and tools therefor
03/13/2008CA2663043A1 A telemetry apparatus and method for monitoring a borehole
03/13/2008CA2662762A1 Method of and system for determining the free point in a drill pipe
03/13/2008CA2661092A1 Optical device for measuring a physical parameter in a hydrogen contaminated sensing zone
03/13/2008CA2602537A1 Electrical cable
03/12/2008EP1898046A2 Method for measuring formation properties
03/12/2008EP1898044A2 Annulus pressure control drilling systems and methods
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