E21B 47 - Survey of boreholes or wells

Patents for E21B 47 - Survey of boreholes or wells (31,352)
12/2002
12/03/2002	US6490527 Method for characterization of rock strata in drilling operations
12/03/2002	US6488087 Field development methods
12/03/2002	US6488085 Method and apparatus for well logging and well control
12/03/2002	US6487901 Transmitter housing for probe in a directional underground drilling apparatus
12/03/2002	US6487782 Method and apparatus for use in creating a magnetic declination profile for a borehole
11/2002
11/28/2002	WO2002095189A1 Method of determining the extent of recovery of materials injected into oil wells
11/28/2002	WO2002057589A9 Internal power source for downhole detection system
11/28/2002	US20020175004 Horizontal directional drilling in wells
11/27/2002	EP1259710A1 Oilwell casing electrical power pick-off points
11/27/2002	EP1259709A1 Controllable production well packer
11/27/2002	EP1259708A2 Wireless power and communications cross-bar switch
11/27/2002	EP1259707A1 Wireless downhole well interval inflow and injection control
11/27/2002	EP1259706A2 Use of downhole high pressure gas in a gas-lift well
11/27/2002	EP1259705A1 Electro-hydraulically pressurized downhole valve actuator
11/27/2002	EP1259702A1 Power generation using batteries with reconfigurable discharge
11/27/2002	EP1259701A1 Controlled downhole chemical injection
11/27/2002	EP1259700A1 Tracer injection in a production well
11/27/2002	CN2522618Y Collector ring
11/26/2002	US6484819 Directional borehole drilling system and method
11/26/2002	US6484818 Horizontal directional drilling machine and method employing configurable tracking system interface
11/26/2002	US6484817 Signaling system for drilling
11/26/2002	US6484801 Flexible joint for well logging instruments
11/26/2002	US6484800 Downhole flow control devices
11/26/2002	CA2174980C Selective excitation of heating electrodes for oil wells
11/26/2002	CA2116113C Apparatus for transmitting instrumentation signals over power conductors
11/21/2002	WO2002093126A2 Method and apparatus for downhole fluid characterization using flxural mechanical resonators
11/21/2002	US20020171560 Reservoir management system and method
11/21/2002	US20020170712 Well logging method & apparatus
11/21/2002	US20020170711 Apparatus and methods for conveying instrumentation within a borehole using continuous sucker rod
11/20/2002	EP1257728A1 Artificial lift apparatus with automated monitoring characteristics
11/20/2002	EP0918920B1 Method and apparatus for providing a magnetic direction reference
11/20/2002	CN2521395Y Oil field water injection well casing pressure monitoring system
11/20/2002	CN2521394Y Current-collector and centralizer integrated apparatus for whole borehole continuous measurement
11/20/2002	CN1094555C Bridge type eccentric testing and injection recovery apparatus
11/19/2002	US6483777 Method and apparatus for ultrasonic imaging of a cased well
11/19/2002	US6481505 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation
11/19/2002	US6481499 Well-bottom gas separator
11/18/2002	CA2385793A1 Well reference apparatus and method
11/14/2002	WO2002090715A1 Shock absorber
11/14/2002	US20020167418 Steerable transceiver unit for downhole data acquisition in a formation
11/14/2002	US20020166699 Apparatus and method for wellbore resistivity determination and imaging using capacitive coupling
11/14/2002	US20020166374 Method for analysing a completion system
11/13/2002	EP1256818A2 Steerable transceiver unit for downhole acquisition in a formation
11/13/2002	EP1256692A1 Drilling method and means for a direct survey of geotechnical parameters
11/13/2002	EP1255913A1 Method and apparatus for monitoring the advance of seawater into fresh water aquifers near coastal cities
11/13/2002	EP1255912A1 Non-intrusive pressure measurement device for subsea well casing annuli
11/12/2002	US6480119 Surveying a subterranean borehole using accelerometers
11/12/2002	US6480118 Method of drilling in response to looking ahead of drill bit
11/12/2002	US6478087 Apparatus and method for sensing the profile and position of a well component in a well bore
11/12/2002	US6478086 Method for installing a sensor in connection with plugging a well
11/12/2002	US6478085 System for accessing subterranean deposits from the surface
11/07/2002	WO2002088522A1 Method, system and tool for reservoir evaluation and well testing during drilling operations
11/07/2002	WO2002088516A1 Subsea drilling riser disconnect system and method
11/07/2002	WO2002088510A1 Drilling system with expandable sleeve
11/07/2002	WO2002038914A3 System and method for signalling downhole conditions to surface
11/07/2002	WO2001086116A1 Measuring device for detecting a body moving in relation to a tubular container
11/07/2002	US20020163441 Reprogrammable downhole telemetry and control system
11/07/2002	US20020162689 Horizontal directional drilling in wells
11/07/2002	US20020162666 Deep well instrumentation
11/07/2002	US20020162659 Reverse section milling method and apparatus
11/07/2002	US20020162240 Use of magneto-resistive sensors for borehole logging
11/07/2002	DE10116945C1 Verfahren zur dauerstandssicheren Teilverfüllung von Schächten Process for life was safe part backfilling of pits
11/07/2002	CA2448404A1 Method, system and tool for reservoir evaluation and well testing during drilling operations
11/07/2002	CA2424284A1 Measuring device for detecting a body moving in relation to a tubular container
11/06/2002	EP1255022A1 Apparatus and method for installing a monitoring line in a well
11/06/2002	EP1254352A1 Downhole densitometer
11/06/2002	EP1222360A4 Tool assembly and monitoring applications using same
11/05/2002	US6474152 Methods and apparatus for optically measuring fluid compressibility downhole
10/2002
10/31/2002	WO2002086322A2 Fluid controlled pumping system and method
10/31/2002	WO2002086288A1 Acoustic monitoring system for subsea wellhead tools and downhole equipment
10/31/2002	WO2002086287A2 Conveying instrumentation within a borehole
10/31/2002	WO2002085821A2 In situ recovery from a relatively permeable formation containing heavy hydrocarbons
10/31/2002	US20020159333 Hydraulically balanced reciprocating pulser valve for mud pulse telemetry
10/31/2002	US20020157871 Apparatus and method of oscillating a drill string
10/31/2002	US20020157828 Instrumented cementing plug and system
10/31/2002	US20020157824 Downhole tool
10/31/2002	DE10116363A1 Bohrkopf einer Bohreinrichtung, insbesondere Spülbohrkopf einer Flachbohreinrichtung Drill a drilling, in particular a power swivel Flachbohreinrichtung
10/31/2002	CA2441307A1 Fluid controlled pumping system and method
10/30/2002	EP1253285A2 Accelerometer caliper while drilling
10/30/2002	EP1252416A1 Choke inductor for wireless communication and control in a well
10/30/2002	EP1252415A1 Method of assessing positional uncertainty in drilling a well
10/30/2002	CN2519021Y Downhole electronic pressure gauge protector
10/30/2002	CN2519020Y Downhole damper
10/29/2002	US6472660 Imaging sensor
10/29/2002	US6470979 Sonde housing structure
10/29/2002	US6470976 Excavation system and method employing adjustable down-hole steering and above-ground tracking
10/29/2002	US6470970 Multiplier digital-hydraulic well control system and method
10/29/2002	US6470967 Sampling device
10/29/2002	CA2330968C System and process for optimizing gravity gradiometer measurements
10/29/2002	CA2054782C Enhanced response device for non-flowing deviated wells
10/24/2002	WO2002084065A2 Drilling head of a drilling device, particularly a wash drilling head of a horizontal drilling device
10/24/2002	WO2002083264A1 Method and apparatus for analyzing casing wear and retrieval of metallic fragments
10/24/2002	WO2002014907B1 Apparatus and method for synchronized formation measurement
10/24/2002	US20020155003 Fluid controlled pumping system and method
10/24/2002	US20020154572 Subsea communication system and technique
10/24/2002	US20020154028 Casing mounted sensors, actuators and generators
10/24/2002	US20020154027 Casing mounted sensors, actuators and generators
10/24/2002	US20020153897 Apparatus and method for wellbore resistivity imaging using capacitive coupling
10/24/2002	US20020152806 Accelerometer caliper while drilling
10/23/2002	EP1251242A1 Slick line system with real-time surface display

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