| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 09/30/2004 | US20040193375 Determining fluid properties from fluid analyzer |
| 09/30/2004 | US20040190589 Determination of virgin formation temperature |
| 09/30/2004 | US20040190374 Earth penetrating apparatus and method employing radar imaging and rate sensing |
| 09/30/2004 | US20040189305 Multi-frequency boring tool locating system and method |
| 09/29/2004 | EP1462605A1 Method of modelling a hydrocarbon mixture by subdividing it in pseudocomponents |
| 09/29/2004 | CN2645064Y Out pushing type digital wellhead pressure meter |
| 09/29/2004 | CN2644787Y Sealing section capable of self-regulating leather cup |
| 09/29/2004 | CN2644674Y Electronic well head connector |
| 09/28/2004 | US6798350 Method for repeating messages in long intelligent completion system lines |
| 09/28/2004 | US6798338 RF communication with downhole equipment |
| 09/28/2004 | CA2232213C Subassembly electrical isolation connector for drill rod |
| 09/23/2004 | WO2004081494A2 Determination of the orientation of a dowhole device |
| 09/23/2004 | WO2004081343A1 Apparatus and method of controlling motion and vibration of a sensor in a drilling assembly |
| 09/23/2004 | WO2004081340A1 Interactive swage |
| 09/23/2004 | WO2004081335A2 A motor pulse controller |
| 09/23/2004 | WO2004044695A3 A method and apparatus for dynamic checking and reporting system health |
| 09/23/2004 | US20040186666 Method and installation for locating the position of the boundary formed at the interface between two fluids contained in a reservoir |
| 09/23/2004 | US20040186665 Measurement device and support for use in a well |
| 09/23/2004 | US20040183692 Control apparatus for automated downhole tools |
| 09/23/2004 | US20040182147 System and method for measuring compaction and other formation properties through cased wellbores |
| 09/23/2004 | CA2518938A1 Determination of the orientation of a downhole device |
| 09/22/2004 | EP1222361B1 The method of and apparatus for determining the path of a well bore under drilling conditions |
| 09/21/2004 | US6793025 Double emulsion based drilling fluids |
| 09/21/2004 | US6792796 Electrical generation of alkaline conditions |
| 09/16/2004 | WO2004079161A1 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation |
| 09/16/2004 | US20040180793 Method and system for cement lining a wellbore |
| 09/16/2004 | US20040178797 Centralizer including measurement means |
| 09/16/2004 | US20040178336 Method and apparatus for downhole quantification of methane using near infrared spectroscopy |
| 09/16/2004 | US20040177956 Drill pipe having an internally coated electrical pathway |
| 09/16/2004 | US20040177954 Interactive swage |
| 09/15/2004 | CN2641287Y Electrode, electric cable well testing head harness |
| 09/14/2004 | US6791470 Reducing injection loss in drill strings |
| 09/14/2004 | US6791469 Method of drilling in response to looking ahead of the bit |
| 09/14/2004 | US6789937 Method of predicting formation temperature |
| 09/14/2004 | US6789621 Intelligent well system and method |
| 09/14/2004 | US6789620 Downhole sensing and flow control utilizing neural networks |
| 09/14/2004 | US6789619 Apparatus and method for detecting the launch of a device in oilfield applications |
| 09/14/2004 | CA2358665C Method of determining wellbore diameter by processing of electromagnetic resistivity measurements |
| 09/14/2004 | CA2336039C Method and apparatus for quick determination of the ellipticity of an earth borehole |
| 09/14/2004 | CA2226923C Power management system for downhole control system in a well and method of using same |
| 09/10/2004 | WO2004076816A1 Estimation of formation characteristics in wells |
| 09/10/2004 | WO2004076815A1 Determining an inflow profile of a well |
| 09/10/2004 | WO2004076814A1 Wireline telemetry data rate prediction |
| 09/10/2004 | WO2004076813A1 Use of sensors with well test equipment |
| 09/10/2004 | WO2004076802A1 System and method for running a control line |
| 09/10/2004 | WO2004076799A2 Configurable beacon for a horizontal boring machine |
| 09/10/2004 | WO2004005661B1 System and mehtod for automating or metering fluid recovered at a well |
| 09/10/2004 | WO2003067201A3 Extend of detonation determination method using seismic energy |
| 09/10/2004 | CA2641567A1 Method and apparatus to complete a well having tubing inserted through a valve |
| 09/09/2004 | US20040174127 Downhole compressor system with a feedback sensor |
| 09/09/2004 | US20040173363 Packer with integrated sensors |
| 09/09/2004 | US20040173352 Gravel packing apparatus having an integrated sensor and method for use of same |
| 09/09/2004 | US20040173350 Intelligent well system and method |
| 09/08/2004 | EP1455093A1 Downhole compressor system |
| 09/08/2004 | EP1455052A2 Improved packer with integrated sensors |
| 09/08/2004 | EP1454033A1 Orientation device for a core sample |
| 09/07/2004 | US6788263 Replaceable antennas for subsurface monitoring apparatus |
| 09/07/2004 | US6788066 Method and apparatus for measuring resistivity and dielectric in a well core in a measurement while drilling tool |
| 09/07/2004 | US6787758 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/07/2004 | CA2797692A1 Deployable mandrel for downhole measurements |
| 09/07/2004 | CA2700299A1 Deployable mandrel for downhole measurements |
| 09/07/2004 | CA2363878C System and method for monitoring corrosion in oilfield wells and pipelines utilizing time-domain-reflectometry |
| 09/07/2004 | CA2300550C Method for drilling under rivers and other obstacles |
| 09/04/2004 | CA2458495A1 Improved packer with integrated sensors |
| 09/02/2004 | WO2004074633A1 Method for determining a position of an object |
| 09/02/2004 | WO2004074630A1 Downhole measurements during non-drilling operations |
| 09/02/2004 | WO2004074625A1 Radially adjustable downhhole devices & methods for same |
| 09/02/2004 | WO2004046506B1 Acoustic devices to measure ultrasound velocity in drilling mud |
| 09/02/2004 | WO2003098153B1 Downhole tool deployment safety system and methods |
| 09/02/2004 | US20040168827 System and method for processing and transmitting information from measurements made while drilling |
| 09/02/2004 | US20040168797 Method and system for estimating the position of a movable device in a borehole |
| 09/02/2004 | US20040168794 Spacer sub |
| 09/02/2004 | CA2516940A1 Method for determining a position of an object |
| 09/01/2004 | EP1285148B1 Tracer release method for monitoring fluid flow in a well |
| 09/01/2004 | EP1212514B1 System for enhancing fluid flow in a well |
| 09/01/2004 | CN2637728Y Thick oil hot pump well high temperature multi parameter testing instrument |
| 08/31/2004 | US6784666 Flexible cushion probe for detecting a dielectric medium defined by a dielectric boundary surface |
| 08/31/2004 | US6782949 Choke valve with pressure transmitters |
| 08/26/2004 | WO2004073240A2 Downhole wireless telemetry system using discrete multi-tone modulation |
| 08/26/2004 | WO2004072793A2 Downhole telemetry system using discrete multi-tone modulation with adaptive noise cancellation |
| 08/26/2004 | US20040166582 Method for quantitative monitoring of a gas injected in a reservoir in particular in a natural environment |
| 08/26/2004 | US20040164838 Element for Use in an Inductive Coupler for Downhole Drilling Components |
| 08/26/2004 | US20040164833 Inductive Coupler for Downhole Components and Method for Making Same |
| 08/26/2004 | US20040164740 Bore location system |
| 08/26/2004 | US20040163850 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 08/26/2004 | US20040163822 Combined telemetry system and method |
| 08/26/2004 | US20040163809 Method and system for determining and controlling position of valve |
| 08/26/2004 | US20040163807 Instrumented packer |
| 08/26/2004 | US20040163806 Well monitoring system |
| 08/26/2004 | US20040163443 Downhole referencing techniques in borehole surveying |
| 08/26/2004 | CA2515193A1 Downhole telemetry system using discrete multi-tone modulation with adaptive noise cancellation |
| 08/26/2004 | CA2514860A1 Downhole wireless telemetry system using discrete multi-tone modulation |
| 08/25/2004 | EP1448867A2 Thermoacoustic electric power generation |
| 08/25/2004 | EP1280976A4 Instrumented cementing plug and system |
| 08/25/2004 | EP1198657B1 Core orientation |
| 08/25/2004 | CN2636200Y Deep well measurer |
| 08/25/2004 | CN2635919Y Cable formation tester |
| 08/24/2004 | USRE38567 Apparatus and method for self adjusting downlink signal communication |
| 08/24/2004 | US6782322 Method, apparatus and computer program product for creating ream section from memory data based on real-time reaming |
| 08/24/2004 | US6781521 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system |