| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 10/02/2013 | EP2643550A2 Downhole imaging system and related methods of use |
| 10/02/2013 | CN203223217U Bit pressure testing connector |
| 10/02/2013 | CN203223216U Distributed optical cable whole course online stress detector for under well casing strings of oil and gas wells |
| 10/02/2013 | CN103334895A High-pressure fluid pump of underground formation tester |
| 10/02/2013 | CN103334743A Formation tester ground control system |
| 10/02/2013 | CN103334741A Minor-diameter pulse generating device |
| 10/02/2013 | CN103334740A Method for confirming oil drainage front edge with consideration of starting pressure gradient |
| 10/02/2013 | CN103334739A Method and device for determining gas pressure of coal seam |
| 10/02/2013 | CN103334738A Protective barrel for pulse generator |
| 10/02/2013 | CN103334737A Detection tool for measuring sediment of bored pile |
| 10/02/2013 | CN103334736A Probing pipe capable of measuring while drilling |
| 10/02/2013 | CN103334735A Ultrasound and float combined three-phase flow split-phase flow measuring method |
| 10/02/2013 | CN103334709A Casing pipe annular gas injection technology |
| 10/02/2013 | CA2790352A1 Wireless well fluid extraction monitoring system |
| 10/01/2013 | US8547245 System and method for downhole telemetry |
| 10/01/2013 | US8544564 Wireless communications in a drilling operations environment |
| 10/01/2013 | US8544543 Consolidating spacer fluids and methods of use |
| 10/01/2013 | US8544542 Method for signalling a downhole device in a well |
| 10/01/2013 | US8544534 Power systems for wireline well service using wired pipe string |
| 10/01/2013 | US8544181 Method and apparatus for modelling the interaction of a drill bit with the earth formation |
| 10/01/2013 | CA2744734C Pressure sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation |
| 10/01/2013 | CA2726769C System and method for deflection compensation in power drive system for connection of tubulars |
| 10/01/2013 | CA2621544C Method for determining block properties of a service rig by evaluating rig data |
| 09/26/2013 | WO2013142786A1 Environmentally powered transmitter for location identification of wellbores |
| 09/26/2013 | WO2013142772A1 Drill bit optimization based motion of cutters |
| 09/26/2013 | WO2013142754A1 Rotary pulser and method for transmitting information to the surface from a drill string down hole in a well |
| 09/26/2013 | WO2013142381A1 Method and system for alignment of a wellbore completion |
| 09/26/2013 | WO2013142190A1 Rig heave, tidal compensation and depth measurement using gps |
| 09/26/2013 | WO2013141956A1 Multi-phase flow meter and methods for use thereof |
| 09/26/2013 | WO2013140239A1 Drilling system failure risk analysis method |
| 09/26/2013 | WO2013139486A1 True north seeking and attitude system |
| 09/26/2013 | WO2013045913A3 Fluid determination in a well bore |
| 09/26/2013 | WO2013036141A3 An apparatus for determining the radial profile of a pipe and a method for operating same |
| 09/26/2013 | WO2013033138A3 Downhole pressure compensator and method of same |
| 09/26/2013 | WO2013022588A3 Methods for monitoring and modifying a fluid stream using opticoanalytical devices |
| 09/26/2013 | WO2013022574A3 Methods for monitoring fluids within or produced from a subterranean formation during fracturing operations using opticoanalytical devices |
| 09/26/2013 | WO2013022570A3 Methods for monitoring fluids within or produced from a subterranean formation during acidizing operations using opticoanalytical devices |
| 09/26/2013 | WO2013022568A3 Methods for monitoring the formation and transport of a fracturing fluid using opticoanalytical devices |
| 09/26/2013 | WO2013022556A3 Methods for monitoring the formation and transport of a treatment fluid using opticoanalytical devices |
| 09/26/2013 | WO2013006252A3 Flowbore mounted sensor package |
| 09/26/2013 | US20130250728 Rotary pulser and method for transmitting information to the surface from a drill string down hole in a well |
| 09/26/2013 | US20130249704 Expandable tubular antenna feed line for through casing e/m communication |
| 09/26/2013 | US20130249597 Semiconductor device and its manufacturing method thereof, mask for semiconductor manufacture, and optical proximity correction method |
| 09/26/2013 | US20130248250 Apparatus and method of landing a well in a target zone |
| 09/26/2013 | US20130248247 Downhole whirl detection while drilling |
| 09/26/2013 | US20130248172 Communications Module For Alternate Path Gravel Packing, And Method For Completing A Wellbore |
| 09/26/2013 | US20130248171 Subsea multiple annulus sensor |
| 09/26/2013 | US20130248170 Methods of stimulating acetoclastic methanogenesis in subterranean deposits of carbonaceous material |
| 09/26/2013 | DE102012204496A1 Drilling device for producing well bore, has conduit emerged from rear end of drilling element, which comprises primary cable end arranged in drilling element and secondary cable end arranged outside the drilling element |
| 09/25/2013 | EP2642066A1 Downhole detection system |
| 09/25/2013 | EP2641120A1 Optical element |
| 09/25/2013 | EP2640933A2 High temperature downhole gauge system |
| 09/25/2013 | EP2640932A2 Open-hole logging instrument and method for making ultra-deep magnetic and resistivity measurements |
| 09/25/2013 | CN203219249U Power amplifier, transmitter and wireless measurement while drilling system |
| 09/25/2013 | CN203214051U Anti-interference pressure transmitter |
| 09/25/2013 | CN203214050U Signal generating device for oil exploitation down hole wireless communication |
| 09/25/2013 | CN203214049U Wireless while-drilling measurement system |
| 09/25/2013 | CN203214048U Leakage detection device for differential pressure-type drilling tools |
| 09/25/2013 | CN203214047U Low-power wellhead pressure transmitter |
| 09/25/2013 | CN203214046U Liquid level position measurement device for non-pressure or low-pressure oil wells |
| 09/25/2013 | CN203214045U Skid mounted type device for metering yield of oil well |
| 09/25/2013 | CN203214044U Ground rotation testing device for logger |
| 09/25/2013 | CN203214043U Well drilling simulation device |
| 09/25/2013 | CN203214036U Single well metering device for oil well |
| 09/25/2013 | CN203214035U Crude oil sand content analysis device |
| 09/25/2013 | CN103328768A Logging-while-drilling tool incorporating electronic radiation generator and method for using same |
| 09/25/2013 | CN103328767A Sensor device for a down hole surveying tool |
| 09/25/2013 | CN103321636A Non-radioactivity tracing flow well logging method and process based on pulse neutron technology |
| 09/25/2013 | CN103321635A Brine leakage accurate alarm system for freezers |
| 09/25/2013 | CN103321634A Method for calculating stratum pressure by aid of liquid level process |
| 09/25/2013 | CN103321633A Method and device for detecting working fluid level depth of oil well |
| 09/25/2013 | CN103321632A Underground drill column parameter measuring device |
| 09/25/2013 | CN103321631A Microspheric focusing polar plate and manufacturing method thereof |
| 09/25/2013 | CN103321630A Simulation well for wireline formation test of cased well |
| 09/25/2013 | CN103321629A Method for predicting coal mine underground directional drilling trajectory |
| 09/25/2013 | CN103321567A Drill tool and method for measuring thicknesses of sea ice and river ice while drilling |
| 09/25/2013 | CN102182443B Deep well image acquisition system |
| 09/25/2013 | CN102182437B Method for determining and eliminating hydraulic fracture stress boundary of coal mine underground drilling |
| 09/25/2013 | CN102155212B Throwing hole orientator of bit hole rig and positioning method |
| 09/25/2013 | CN102134988B Method for measuring dryness of downhole steam in thermal recovery horizontal well |
| 09/25/2013 | CN102011576B Method for hierarchically diagnosing fault of rod-comprising oil pumping system based on indicator diagram |
| 09/25/2013 | CN101501298B Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer |
| 09/24/2013 | US8544062 Method and system for improving computer network security |
| 09/24/2013 | US8543336 Distributed measurement of mud temperature |
| 09/24/2013 | US8540030 Riser lifecycle management system, program product, and related methods |
| 09/24/2013 | US8540021 Release assembly for a downhole tool string and method for use thereof |
| 09/24/2013 | CA2691462C Method for detecting and locating fluid ingress in a wellbore |
| 09/24/2013 | CA2460788C Magnetic field enhancement for use in passive ranging |
| 09/24/2013 | CA2401705C Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/19/2013 | WO2013138766A1 Apparatus and methods for determining whirl of a rotating tool |
| 09/19/2013 | WO2013138622A2 Outward venting of inflow tracer in production wells |
| 09/19/2013 | WO2013138584A1 Screening potential geomechanical risks during waterflooding |
| 09/19/2013 | WO2013138134A1 Oilfield chemicals with attached spin probes |
| 09/19/2013 | WO2013138034A2 Downhole measurement assembly, tool and method |
| 09/19/2013 | WO2013137845A1 Method and apparatus for acoustic noise isolation in a subterranean well |
| 09/19/2013 | WO2013137742A1 Method and device for determining pressure in a cavity |
| 09/19/2013 | WO2013135861A2 Tracer based flow measurement |
| 09/19/2013 | WO2013135288A1 System and method for controlling the processing of oil sands |
| 09/19/2013 | WO2013134814A1 Improvements to downhole surveying |
| 09/19/2013 | WO2013116826A3 Wellsite communication system and method |