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)
10/2005
10/19/2005EP1554462A4 Apparatus and method of monitoring and signaling for downhole tools
10/19/2005CN2735000Y Anti-theft automatic detection device for steam injection pipe network
10/19/2005CN2734989Y Mechanical logging cable scratcher
10/19/2005CN2734979Y Rotary eccentric tubing anchor
10/19/2005CN1685202A Impeller device for data acquisition in a flow
10/19/2005CN1685129A Drill pipe having an internally coated electrical pathway
10/18/2005US6957145 Methods for determining characteristics of earth formations
10/18/2005US6956791 Apparatus for receiving downhole acoustic signals
10/18/2005US6956204 Determining fluid properties from fluid analyzer
10/18/2005US6955218 Placing fiber optic sensor line
10/13/2005WO2005094505A2 An apparatus and methodology of hydrostatically testing of oil field tubing and casing
10/13/2005US20050224279 Accelerated weight drop configurable for use as a shear wave seismic energy source and a method of operation thereof
10/13/2005US20050224257 System and method for using microgyros to measure the orientation of a survey tool within a borehole
10/13/2005US20050224229 Methods of monitoring downhole conditions
10/13/2005US20050224228 Method and apparatus for isolating and testing zones during reverse circulation drilling
10/13/2005US20050223808 Apparatus and methods for acoustically determining fluid properties while sampling
10/13/2005US20050223790 Dynamic logging speed
10/13/2005DE102005014708A1 Lateraler Resistivitätssensor und Verfahren zum Anbringen eines lateralen Resistivitätssensors an einem Rohrabschnitt Lateral Resistivitätssensor and method for attaching a lateral Resistivitätssensors on a pipe section
10/13/2005CA2857317A1 Data compression methods and systems
10/12/2005EP1584783A1 Telemetry methods for use in wells
10/12/2005EP1583962A1 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
10/12/2005EP1583886A2 Isolated electrical connection in a drill string
10/12/2005CN2732982Y Branch well reentering tool
10/12/2005CN1682009A System and method for automating or metering fluid recovered at a well
10/12/2005CN1222677C Method for steering drilling head and rotation steerable drilling system
10/12/2005CN1222676C Rotary steering drilling system and method
10/11/2005US6954073 Determination of actual path of inground device based on information corresponding to reference point measurements
10/09/2005CA2504119A1 An accelerated weight drop configurable for use as a shear wave seismic energy source and a method of operation thereof
10/07/2005CA2463077A1 Method and apparatus for determining water level in a drilled or dug well for monitoring and water flow control purposes
10/06/2005WO2005093213A1 Fluids comprising reflective particles and methods of using the same to determine the size of a wellbore annulus
10/06/2005WO2005093212A1 Method and system for detecting conditions inside a wellbore
10/06/2005WO2005091911A2 Multiple distributed pressure measurements
10/06/2005WO2005091900A2 Borehole marking devices and methods
10/06/2005WO2005091883A2 Extracting and processing hydrocarbon-bearing formations
10/06/2005WO2005054973A3 Method and system for improving computer network security
10/06/2005WO2005048664A3 High temperature circuits
10/06/2005US20050221495 Method and composition for improving NMR analysis of formation fluids
10/06/2005US20050218898 [a combined propagation and lateral resistivity downhole tool]
10/06/2005US20050217898 Vibration-dampening drill collar
10/06/2005US20050217897 Oil drilling tool
10/06/2005US20050217896 Adaptive borehole assembly visualization in a three-dimensional scene
10/06/2005US20050217856 System and method for monitoring and removing scale from a wellbore
10/06/2005US20050217848 Deployment of underground sensors
10/06/2005US20050217843 Pumping system for oil wells
10/06/2005US20050217365 System and method for measurements of depth and velocity of instrumentation within a wellbore
10/06/2005US20050217350 Systems and methods for controlling flow control devices
10/06/2005CA2838472A1 Extracting and processing hydrocarbon-bearing formations
10/06/2005CA2603138A1 Intelligent efficient servo-actuator for a downhole pulser with novel brake and lock
10/06/2005CA2603117A1 Intelligent efficient servo-actuator with dynamic seal for a downhole pulser
10/06/2005CA2573524A1 Intelligent efficient servo-actuator for a downhole pulser
10/06/2005CA2558424A1 Extracting and processing hydrocarbon-bearing formations
10/06/2005CA2558162A1 Surface real-time processing of downhole data
10/05/2005EP1581721A1 Communication system for down hole use
10/05/2005CN2731097Y Angle difference measurer for horizontal well and direction well
10/05/2005CN2731096Y Downhole intelligent multi-parameter tester for submerged electric pump set
10/05/2005CN2731095Y Collection controller for oil field
10/05/2005CN1678815A Method for interpreting data measured in a hydrocarbon well in production
10/05/2005CN1677129A A combined propagation and lateral resistivity downhole tool
10/05/2005CN1677128A Underground electromagnetic measurements using cross-magnetic dipoles
10/05/2005CN1676874A Well deflection and position gamma measuring nistrument during drilling
10/05/2005CN1676873A High temperature high pressure oil well cement paste coagulation instrument and its coagulation time measuring method
10/05/2005CN1676872A Surface borehole volume determining method
10/05/2005CN1676871A Series combined logging instrument
10/04/2005US6952170 Hollow drilling rod for transmitting information
10/04/2005US6952101 Method for determining direction to a target formation from a wellbore by analyzing multi-component electromagnetic induction signals
10/04/2005US6952096 Method and apparatus for determining speed and properties of flowing fluids using NMR measurements
10/04/2005CA2325917C Method and apparatus for deployment, mounting and coupling of downhole geophones
10/04/2005CA2300548C Improved free fall survey instrument
09/2005
09/29/2005WO2005091204A1 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data
09/29/2005WO2005091019A1 Multiple distributed force measurements
09/29/2005WO2005090752A1 Borehole tool
09/29/2005WO2005090751A1 Seismic measurements while drilling
09/29/2005WO2005089458A2 Use of electromagnetic acoustic transducers in downhole cement evaluation
09/29/2005WO2005033465A3 Downhole fiber optic acoustic sand detector
09/29/2005US20050213898 Cable Splice Protector
09/29/2005US20050212530 Method and Apparatus for Testing Electromagnetic Connectivity in a Drill String
09/29/2005US20050212520 Subsurface electromagnetic measurements using cross-magnetic dipoles
09/29/2005US20050212519 Boring tool tracking/guiding system and method with unconstrained target location geometry
09/29/2005US20050211470 Bottom hole assembly
09/29/2005US20050211469 Elongated coil assembly for electromagnetic borehole surveying
09/29/2005US20050211441 Apparatus and methods for installing instrumentation line in a wellbore
09/29/2005US20050211429 Dual sensor freepoint tool
09/29/2005DE102005010535A1 Vorrichtung und Verfahren zum Erzeugen elektrischer Energie in einem Bohrloch Apparatus and method for generating electric energy in a borehole
09/29/2005CA2559937A1 A method and apparatus for downhole fluid analysis for reservoir fluid characterization
09/29/2005CA2558332A1 Multiple distributed force measurements
09/28/2005EP1261974B1 In-well monitoring and flow control system
09/28/2005CN2729311Y Portable oil tube pressure test device
09/28/2005CN2729310Y Ring space testing device for screw pump
09/27/2005US6950034 Method and apparatus for performing diagnostics on a downhole communication system
09/27/2005US6948562 Production of a blending agent using an in situ thermal process in a relatively permeable formation
09/27/2005CA2502165A1 Bottom hole assembly
09/27/2005CA2413984C Burst qam downhole telemetry system
09/27/2005CA2201384C Apparatus for the remote measurement of physical parameters
09/22/2005WO2005088072A1 Method and apparatus for positioning a downhole tool
09/22/2005WO2005088064A1 Annular isolators for tubulars in wellbores
09/22/2005WO2005086736A2 Providing a local response to a local condition in an oil well
09/22/2005WO2005086699A2 Downhole formation sampling
09/22/2005WO2005086691A2 Multiple distributed sensors along a drillstring
09/22/2005WO2005086565A2 Leadless sub assembly for downhole detection system
09/22/2005WO2005017301A3 Electroactive fluid controlled mud pulser
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