| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 03/01/2006 | CN1740515A Well logging power graph method and device |
| 03/01/2006 | CN1740514A Oil extraction state measuring and controlling system |
| 02/28/2006 | US7006920 Activity data capture system for a well service vehicle |
| 02/28/2006 | US7004252 Multiple zone testing system |
| 02/28/2006 | US7004021 Method and system for detecting conditions inside a wellbore |
| 02/28/2006 | US7004020 Production profile determination and modification system |
| 02/23/2006 | WO2005119298A3 Method for generating a 3d earth model |
| 02/23/2006 | US20060041382 Method for interpreting data measured in a hydrocarbon well in production |
| 02/23/2006 | US20060037782 Diverter heads |
| 02/23/2006 | US20060037388 Fluid flow measuring device and method of manufacturing thereof |
| 02/22/2006 | EP1454033A4 Orientation device for a core sample |
| 02/22/2006 | EP1251912B1 Method for biosolid disposal and methane generation |
| 02/22/2006 | CN2760228Y A leak hunting apparatus for drilling fluid |
| 02/22/2006 | CN2760227Y Locating device for logging tool of ultrasonic well logger |
| 02/22/2006 | CN2760226Y A downhole optoelectronic safety leak-proof halter for well logging |
| 02/22/2006 | CN1737331A 自卸压球座 Since relief tee |
| 02/21/2006 | US7002484 Supplemental referencing techniques in borehole surveying |
| 02/21/2006 | US7002142 Determining dew precipitation and onset pressure in oilfield retrograde condensate |
| 02/21/2006 | US7000710 Automatic path generation and correction system |
| 02/21/2006 | US7000700 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 02/21/2006 | US7000699 Method and apparatus for orienting perforating devices and confirming their orientation |
| 02/21/2006 | US7000698 Methods and systems for optical endpoint detection of a sliding sleeve valve |
| 02/21/2006 | US7000697 Downhole measurement apparatus and technique |
| 02/21/2006 | US7000696 Method and apparatus for determining the temperature of subterranean wells using fiber optic cable |
| 02/21/2006 | US7000692 Apparatus and methods for placing downhole tools in a wellbore |
| 02/21/2006 | CA2355571C Deep well instrumentation |
| 02/21/2006 | CA2261686C Combined electric-field telemetry and formation evaluation method and apparatus |
| 02/16/2006 | US20060035591 Methods and apparatus for reducing electromagnetic signal noise |
| 02/16/2006 | US20060034154 Rotary pulser for transmitting information to the surface from a drill string down hole in a well |
| 02/16/2006 | US20060032637 Method for exploitation of gas hydrates |
| 02/16/2006 | US20060032629 Insertion tube methods and apparatus |
| 02/16/2006 | US20060032533 System and method for automating or metering fluid recovered at a well |
| 02/16/2006 | DE102004027048B3 Verfahren und Vorrichtung zum Einbringen von geophysikalischen Messkabeln in horizontale und vertikale Bohrlöcher Method and apparatus for the introduction of cables in geophysical measuring horizontal and vertical boreholes |
| 02/15/2006 | EP1379757B1 Oscillating shear valve for mud pulse telemetry |
| 02/15/2006 | EP1009907B1 Apparatus and method for determining integrity of oil well tubing |
| 02/15/2006 | CN2758476Y Automatic height regulation and degassing device for well logging |
| 02/15/2006 | CN2758475Y Radio transmission monitoring instrument for flow difference between filling and flowing out liquid during well drilling |
| 02/15/2006 | CN1735741A Data transmission device |
| 02/14/2006 | US6999878 Method and installation for locating the position of the boundary formed at the interface between two fluids contained in a reservoir |
| 02/14/2006 | US6999517 Method and apparatus for transmission of data on multiple propagation modes with far-end cross-talk cancellation |
| 02/14/2006 | US6998999 Hybrid piezoelectric and magnetostrictive actuator |
| 02/14/2006 | US6997258 Apparatus and methods for pressure compensated contact with the borehole wall |
| 02/14/2006 | US6997257 Apparatus and method for determining the dip of an underground formation in a cased or uncased borehole |
| 02/14/2006 | US6997256 Use of fiber optics in deviated flows |
| 02/14/2006 | US6997255 In situ thermal processing of a hydrocarbon containing formation in a reducing environment |
| 02/14/2006 | US6997055 System and method for determining formation fluid parameters using refractive index |
| 02/14/2006 | CA2487186C Method and apparatus for installing electronic equipment below soft earth surface layer |
| 02/14/2006 | CA2357539C Downhole gauge carrier apparatus |
| 02/09/2006 | WO2006012731A2 Integrated magnetic ranging tool |
| 02/09/2006 | US20060028321 Integrated magnetic ranging tool |
| 02/09/2006 | US20060028207 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 02/09/2006 | DE102005032257A1 Anordnung, Werkzeug und Verfahren zum Messen der Resistivität in einem Bohrloch, Verfahren zum Aufbauen der Anordnung und Verfahren zum Steuern einer Bohrrichtung Assembly tool and method for measuring the resistivity in a borehole method for constructing the arrangement and method for controlling a drilling direction |
| 02/09/2006 | DE102004026702B3 Vorrichtung zur Untersuchung von Ankerbohrlöchern An apparatus for investigating anchor boreholes |
| 02/08/2006 | EP1624153A1 Method for determining soil properties |
| 02/08/2006 | EP1090269A4 Determining the shape and orientation of a borehole |
| 02/08/2006 | EP1051838A4 Method to transmit downhole video up standard wireline cable using digital data compression techniques |
| 02/08/2006 | CN2757094Y Three piece type measuring ring |
| 02/08/2006 | CN2756827Y Convenient pressure measuring sampler |
| 02/08/2006 | CN2756826Y Tracking receiving guide in non-excavation guide instrument system |
| 02/08/2006 | CN2756825Y Under well layered flow continuous detector |
| 02/08/2006 | CN2756820Y Bridge type deviation integrated water distribution packer |
| 02/07/2006 | US6995899 Fiber optic amplifier for oilfield applications |
| 02/07/2006 | US6995684 Retrievable subsurface nuclear logging system |
| 02/07/2006 | US6995677 Apparatus and methods for monitoring pipelines |
| 02/07/2006 | US6995352 Fiber optic based method and system for determining and controlling position of a sliding sleeve valve |
| 02/07/2006 | US6994167 Method and system for cement lining a wellbore |
| 02/07/2006 | US6994162 Linear displacement measurement method and apparatus |
| 02/07/2006 | US6994160 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range |
| 02/07/2006 | US6993988 Locking clips for retaining parallel elongated members |
| 02/07/2006 | US6993963 Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method |
| 02/07/2006 | CA2445696C Method and system for supplying well log data to a customer |
| 02/02/2006 | WO2006012131A2 Drill pipe assembly |
| 02/02/2006 | WO2006011927A2 Downhole telemetry system for wired tubing |
| 02/02/2006 | WO2006010959A1 Processing sensing measurements |
| 02/02/2006 | WO2006010875A1 Well characterisation method |
| 02/02/2006 | US20060022840 Communication system for down hole use |
| 02/02/2006 | CA2575374A1 Processing sensing measurements |
| 02/02/2006 | CA2563428A1 Downhole telemetry system for wired tubing |
| 02/01/2006 | EP1621723A1 System for loading executable code into volatile memory in a downhole tool |
| 02/01/2006 | EP1620629A2 System and method using a continuously variable transmission to control one or more system components |
| 02/01/2006 | CN1727636A Method and system for accessing subterranean deposits from the surface |
| 02/01/2006 | CN1239809C Method for predetermining subfloor temp |
| 02/01/2006 | CN1239808C Electroreleasing device |
| 01/31/2006 | US6993432 System and method for wellbore communication |
| 01/31/2006 | US6992554 Data transmission element for downhole drilling components |
| 01/31/2006 | US6991045 Forming openings in a hydrocarbon containing formation using magnetic tracking |
| 01/31/2006 | US6991036 Thermal processing of a relatively permeable formation |
| 01/31/2006 | US6991034 Apparatus and method for enhancing productivity of natural gas wells |
| 01/31/2006 | US6991033 pyrolysis of kerogens in wells to form mixtures of hydrocarbon oxidates, paraffins, hydrogen, and/or synthesis gas; process control |
| 01/31/2006 | US6991032 In situ thermal processing of an oil shale formation using a pattern of heat sources |
| 01/31/2006 | US6991031 In situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products |
| 01/31/2006 | CA2348554C A method for predicting the directional tendency of a drilling assembly in real-time |
| 01/27/2006 | CA2513998A1 Armoured flat cable signalling and instrument power acquisition |
| 01/27/2006 | CA2513785A1 System for loading executable code into volatile memory in a downhole tool |
| 01/26/2006 | WO2005100747A3 Dynamic logging speed |
| 01/26/2006 | WO2005091900A3 Borehole marking devices and methods |
| 01/26/2006 | US20060018190 Tool for Measuring Perforation Tunnel Depth |
| 01/26/2006 | US20060016595 Downhole Measurement System and Method |
| 01/26/2006 | US20060016594 Methods to detect formation pressure |
| 01/26/2006 | US20060016593 Downhole Measurement System and Method |