| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 12/08/2005 | WO2005116387A2 Deployment system |
| 12/08/2005 | US20050270904 Apparatus, method and system for digitally transmitting acoustic pulse gun signals |
| 12/08/2005 | US20050270172 Method and apparatus for using a data telemetry system over multi-conductor wirelines |
| 12/08/2005 | US20050270023 Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
| 12/08/2005 | US20050269132 Laser spectroscopy/chromatography drill bit and methods |
| 12/08/2005 | US20050269106 Apparatus and methods for operating a tool in a wellbore |
| 12/08/2005 | US20050269083 Onboard navigation system for downhole tool |
| 12/08/2005 | US20050269082 Control method for downhole steering tool |
| 12/08/2005 | US20050269081 Positive engagement indicator for wireline fishing operations |
| 12/08/2005 | US20050269079 Blowout preventer testing system |
| 12/08/2005 | US20050268702 Non-intrusive multiphase flow meter |
| 12/08/2005 | US20050268476 Determining a borehole azimuth from tool face measurements |
| 12/08/2005 | CA2566221A1 System and methods using fiber optics in coiled tubing |
| 12/07/2005 | EP1601857A2 Determination of the orientation of a downhole device |
| 12/07/2005 | EP1601856A1 Apparatus and method of controlling motion and vibration of a sensor in a drilling assembly |
| 12/07/2005 | EP1478824A4 Well system |
| 12/07/2005 | EP1279006B1 Sensor apparatus with two resonant transducers and a single conductor |
| 12/07/2005 | CN2744830Y Direction gauge of screw drill |
| 12/06/2005 | US6971271 Fluid flow measuring device and method of manufacturing thereof |
| 12/06/2005 | US6971265 Downhole sensing apparatus with separable elements |
| 12/01/2005 | WO2005114134A2 Downhole probe assembly |
| 12/01/2005 | WO2005113937A2 Methods and apparatus for measuring formation properties |
| 12/01/2005 | WO2005113936A1 Method for signalling a downhole device in a flowing well |
| 12/01/2005 | WO2005113931A1 Method and device for introducing geophysical measuring cables into horizontal and vertical boreholes |
| 12/01/2005 | WO2005086699A3 Downhole formation sampling |
| 12/01/2005 | WO2005076803A3 Apparatus for changing wellbore fluid temperature |
| 12/01/2005 | US20050267719 Field synthesis system and method for optimizing drilling operations |
| 12/01/2005 | US20050267686 Wellbore evaluation system and method |
| 12/01/2005 | US20050263286 Remotely Actuating a Casing Conveyed Tool |
| 12/01/2005 | US20050263281 System and methods using fiber optics in coiled tubing |
| 12/01/2005 | US20050263280 Method and apparatus for anchoring tool in borehole conduit |
| 12/01/2005 | US20050263279 Pressure monitoring of control lines for tool position feedback |
| 12/01/2005 | DE19983231B4 System und Verfahren zur Sekundärförderung von Kohlenwasserstoff System and method for secondary recovery of hydrocarbon |
| 12/01/2005 | DE102005021230A1 Resistivitätswerkzeug Resistivitätswerkzeug |
| 11/30/2005 | EP1600749A1 Method and device for measuring the temperature or another quantity in a U-shaped geothermal probe and flushing device therefor |
| 11/30/2005 | EP1600601A2 Wellbore evaluation system and method |
| 11/30/2005 | EP1507954B1 A downhole tool for use in a wellbore |
| 11/30/2005 | EP1468395A4 A coiled tubing inspection system using image pattern recognition |
| 11/30/2005 | EP1230464A4 High data rate acoustic telemetry system |
| 11/30/2005 | CN1702295A Cementing acoustic imaging logging instrument |
| 11/30/2005 | CN1702294A Acoustic sonde of digital acoustic logging instrument |
| 11/30/2005 | CN1229567C Choke inductor for wireless communication and control in a well, and arrangement method in pipeline |
| 11/29/2005 | US6970398 Pressure pulse generator for downhole tool |
| 11/29/2005 | US6970099 Apparatus, system, and method for detecting and reimpressing electrical charge disturbances on a drill-pipe |
| 11/29/2005 | US6968735 Long range data transmitter for horizontal directional drilling |
| 11/29/2005 | CA2403948C Apparatus and method for downhole well equipment and process management,identification, and actuation |
| 11/24/2005 | US20050260089 Reciprocating pulser for mud pulse telemetry |
| 11/24/2005 | US20050259513 Method of seismic source monitoring using modeled source signatures with calibration functions |
| 11/24/2005 | US20050259512 Acoustic caliper with transducer array for improved off-center performance |
| 11/24/2005 | US20050257962 Method and system for circulating fluid in a well system |
| 11/24/2005 | US20050257961 Equipment Housing for Downhole Measurements |
| 11/24/2005 | US20050257611 Methods and apparatus for measuring formation properties |
| 11/24/2005 | US20050257610 Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis |
| 11/24/2005 | US20050257533 Vortex tube cooling system |
| 11/23/2005 | EP1598520A1 Downhole recorder system |
| 11/23/2005 | EP1598519A2 Equipment housing for downhole measurements |
| 11/23/2005 | EP1597455A1 Radially adjustable downhole devices & methods for the same |
| 11/23/2005 | EP1402144B1 A wellbore directional steering tool |
| 11/23/2005 | CN2742137Y Drilling liquid on-line measuring instrument and its quantitative degasing device |
| 11/23/2005 | CN2742136Y High temperature gas injection well five parameter gas entry profile combined logging instrument |
| 11/22/2005 | US6967589 Gas/oil well monitoring system |
| 11/22/2005 | US6966384 Deploying a cable through a guide conduit in a well |
| 11/22/2005 | US6966374 In situ thermal recovery from a relatively permeable formation using gas to increase mobility |
| 11/22/2005 | US6966368 Plug and expel flow control device |
| 11/22/2005 | US6966211 Downhole calibration system for directional sensors |
| 11/22/2005 | CA2361773C Method and apparatus for protecting a sensor in a drill collar |
| 11/22/2005 | CA2330402C Method of providing hydraulic/fiber conduits adjacent bottom hole assemblies for multi-step completions |
| 11/17/2005 | WO2005108932A1 Means for measuring fluid flow in a pipe |
| 11/17/2005 | WO2005107429A2 Optical communications with a bottom hole assembly |
| 11/17/2005 | WO2005049957A3 High temperature environment tool system and method |
| 11/17/2005 | US20050252711 System for imparting mechanical impulse energy to the ground |
| 11/17/2005 | US20050252652 Sonde |
| 11/17/2005 | US20050252279 Apparatus and methodology of hydrostatically testing of oil field tubing and casing |
| 11/17/2005 | CA2506133A1 Logging tool with a parasitic radiation shield and method of logging with such a tool |
| 11/16/2005 | EP1234091B1 Downhole device |
| 11/16/2005 | EP0852653B1 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means |
| 11/16/2005 | CN2740779Y Layered water injection regulating and measuring apparatus for oil field |
| 11/16/2005 | CN2740778Y Rapid joint |
| 11/16/2005 | CN1696473A Formation imaging while drilling in non-conductive mud |
| 11/15/2005 | US6964303 Horizontal directional drilling in wells |
| 11/15/2005 | US6964300 In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore |
| 11/15/2005 | US6964298 Method and system for accessing subterranean deposits from the surface |
| 11/15/2005 | CA2330969C System and process for secondary hydrocarbon recovery |
| 11/15/2005 | CA2305235C Apparatus for directional drilling |
| 11/15/2005 | CA2237013C Method of qualifying a borehole survey |
| 11/15/2005 | CA2140236C Liner tie-back sleeve |
| 11/14/2005 | CA2498602A1 System for imparting mechanical impulse energy to the ground |
| 11/10/2005 | WO2005106396A2 Direct measurement of brillouin frequency in distributed optical sensing systems |
| 11/10/2005 | WO2005106198A1 Method of treating oil and gas wells |
| 11/10/2005 | WO2005106189A1 Improved packer |
| 11/10/2005 | WO2005054876A3 Method and system for transmitting signals through a metal tubular |
| 11/10/2005 | US20050251362 System and method for determining pump underperformance |
| 11/10/2005 | US20050249503 Optical communications with a bottom hole assembly |
| 11/10/2005 | US20050248334 System and method for monitoring erosion |
| 11/10/2005 | US20050247483 Remote control for a drilling machine |
| 11/10/2005 | US20050247119 Method and apparatus for downhole fluid characterization using flexural mechanical resonators |
| 11/10/2005 | DE10251496B4 Einrichtung zur Erzeugung von elektrischer Energie und von Druckimpulsen zur Signalübertragung Means for generation of electrical energy and pressure pulses to the signal transmission |
| 11/10/2005 | CA2563597A1 Direct measurement of brillouin frequency in distributed optical sensing systems |
| 11/10/2005 | CA2562461A1 Method of treating oil and gas wells |
| 11/09/2005 | EP1556576A4 Drill pipe having an internally coated electrical pathway |