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)
05/2003
05/14/2003CN1418317A Mthod and system for performing operations and for improving production in wells
05/14/2003CN1417578A Flow speed wave generating method
05/13/2003US6563303 Methods and computer executable instructions for marking a downhole elongate line and detecting same
05/13/2003US6561289 Bottomhole assembly and methods of use
05/13/2003US6561288 Method and system for accessing subterranean deposits from the surface
05/13/2003US6560889 Use of magneto-resistive sensors for borehole logging
05/13/2003CA2130282C Method and apparatus for communicating data in a wellbore and for detecting the influx of gas
05/08/2003WO2003038287A1 Well jet device for testing and studying formations and the operating method thereof
05/08/2003WO2003038232A1 Orientation device for a core sample
05/08/2003US20030086336 Semi-passive two way borehole communication apparatus and method
05/08/2003US20030085816 High-power well logging method and apparatus
05/08/2003US20030085815 Docking station assembly and methods for use in a wellbore
05/08/2003US20030085059 Relative drill bit direction measurement
05/08/2003US20030085039 Downhole sorption cooling and heating in wireline logging and monitoring while drilling
05/08/2003US20030085038 Sand screen with integrated sensors
05/08/2003US20030085035 Formation testing instrument having extensible housing
05/08/2003US20030084716 Apparatus for measuring and recording data from boreholes
05/08/2003US20030084715 Method and apparatus for pore pressure monitoring
05/08/2003CA2734723A1 Orientation device for a core sample
05/07/2003CN2549173Y Mechanical downhole switch
05/07/2003CN1416500A Method and appts. for monitoring advance of seawater into fresh water aquifers near coastal cities
05/07/2003CN1416497A Method and appts. for directional boring under mixed conditions
05/07/2003CN1415942A Method for measuring continuous current flux of separate injection well
05/06/2003US6559646 Boring tool locating using sensing at spaced apart reference path locations
05/06/2003US6557636 Method and apparatus for perforating a well
05/06/2003US6557631 Down hole tension/compression device for logging tools
05/06/2003US6557630 Method and apparatus for determining the temperature of subterranean wells using fiber optic cable
05/06/2003CA2101446C Well completion system
05/05/2003CA2408425A1 Apparatus and method for downhole well equipment and process management, identification, and operation
05/02/2003EP1306659A2 Single tube downhole densitometer
05/02/2003EP1305547A1 Data transmission system for a string of downhole components
05/02/2003EP1305499A1 Method and apparatus for placing and interrogating downhole sensors
05/02/2003EP1108853A9 Method of measuring a borehole
05/01/2003WO2003036043A2 Forming openings in a hydrocarbon containing formation using magnetic tracking
05/01/2003WO2003036042A1 Method of monitoring a drilling path
05/01/2003WO2003036041A2 In situ recovery from a hydrocarbon containing formation using barriers
05/01/2003WO2003036040A2 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
05/01/2003WO2003036039A1 In situ production of a blending agent from a hydrocarbon containing formation
05/01/2003WO2003036038A2 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
05/01/2003WO2003036037A2 Installation and use of removable heaters in a hydrocarbon containing formation
05/01/2003WO2003036036A1 In situ recovery from lean and rich zones in a hydrocarbon containing formation
05/01/2003WO2003036035A2 In situ upgrading of coal
05/01/2003WO2003036034A1 Coductor-in-conduit heat sources with an electrically conductive material in the overburden
05/01/2003WO2003036033A1 Simulation of in situ recovery from a hydrocarbon containing formation
05/01/2003WO2003036032A2 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids
05/01/2003WO2003036031A2 Seismic monitoring of in situ conversion in a hydrocarbon containing formation
05/01/2003WO2003036030A2 In situ thermal processing and upgrading of produced hydrocarbons
05/01/2003WO2003036024A2 Method and system for in situ heating a hydrocarbon containing formation by a u-shaped opening
05/01/2003WO2003035811A1 Remediation of a hydrocarbon containing formation
05/01/2003WO2003035801A2 Producing hydrocarbons and non-hydrocarbon containing materials from a hydrocarbon containing formation
05/01/2003WO2002038914A9 System and method for signalling downhole conditions to surface
05/01/2003WO2002038909A9 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
05/01/2003CA2463423A1 Upgrading and mining of coal
05/01/2003CA2463109A1 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
05/01/2003CA2462971A1 Installation and use of removable heaters in a hydrocarbon containing formation
04/2003
04/30/2003CN2547862Y Balanced pressure metering joint
04/30/2003CN1415070A Multiphase flow measurement system
04/30/2003CN1415044A Integrated transmitter surveying while boring (SWB) entrenching powering device for continuation of guided bore hole
04/30/2003CN1107155C Non-cable near-distance dynamic parameters logging method for oil well
04/29/2003US6556287 Subterranean course alignment laser instrument
04/29/2003US6556144 Method and apparatus for data communication with an underground instrument package
04/29/2003US6556054 Efficient transmitters for phase modulated signals
04/29/2003US6555807 Sensing strain in hydrocarbon wells
04/29/2003US6554065 Memory gravel pack imaging apparatus and method
04/29/2003US6554064 Method and apparatus for a sand screen with integrated sensors
04/29/2003US6554062 Anchor apparatus and method
04/29/2003CA2409884A1 Single tube downhole densitometer
04/24/2003WO2003034175A2 Methods and systems for offering and servicing financial instruments
04/24/2003WO2003033875A1 Magnetic signalling in pipelines
04/24/2003WO2003033859A1 Methods and apparatus to control downhole tools
04/24/2003WO2003033857A2 Flow control mechanism for a downhole tool
04/24/2003WO2002055841A3 Well screen having a line extending therethrough
04/24/2003WO2002054636A3 Data transmission in pipeline systems
04/24/2003US20030076106 Orientation sensor arrangement and method for use in a system for monitoring the orientation of an underground boring tool
04/24/2003US20030075361 Well system
04/24/2003US20030075360 Includes miscible combination of oleaginous fluid, an emulsifier capable of forming a microemulsion, an emulsifier capable of forming an invert emulsion, and an electrolytic salt; for electrically logging subterranean wells
04/24/2003US20030075321 Downhole device
04/24/2003US20030075319 Auto-extending/retracting electrically isolated conductors in a segmented drill string
04/24/2003CA2643187A1 Methods and apparatus to control downhole tools
04/23/2003EP1303681A1 Well management system
04/23/2003EP0963644B1 An apparatus, system and method to transmit and display acquired well data in near real time at a remote location
04/23/2003CN2546845Y 绞车传感器 Winch sensor
04/23/2003CN1413285A Three dimensional steerable system
04/23/2003CN1412413A Liquid production section tester instrument in boosting process of high-temp. gas injection well
04/22/2003US6552665 Telemetry system for borehole logging tools
04/22/2003US6552548 Detecting underground objects
04/22/2003US6550743 Hydraulic system for actuation of a measurement-while-drilling mud valve
04/22/2003US6550538 Communication with a downhole tool
04/22/2003US6550321 Apparatus for measuring and recording data from boreholes
04/17/2003WO2003031950A1 Real-time on-line sensing and control of mineral scale deposition from formation fluids
04/17/2003WO2003031772A1 Method and device for acoustic signal transmission in a drillstring
04/17/2003WO2003031762A1 Method of forming a trenchless flowline
04/17/2003WO2002086322A3 Fluid controlled pumping system and method
04/17/2003WO2002038916A9 An apparatus and method for determining downhole bit failure
04/17/2003US20030072218 Transmission of data in boreholes
04/17/2003US20030072217 Method for acoustic signal transmission in a drillstring
04/17/2003US20030071988 Real-time on-line sensing and control of mineral scale deposition from formation fluids
04/17/2003US20030070843 Electrically conductive oil-based mud
04/17/2003US20030070842 Methods and apparatus to control downhole tools
04/17/2003US20030070806 Apparatus and method for locating joints in coiled tubing operations
1 ... 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 ... 314