| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 08/04/2005 | US20050167098 [wellbore communication system] |
| 08/04/2005 | US20050167094 System and method for sensing load on a downhole tool |
| 08/04/2005 | DE102004063219A1 Schallwandler zur Verwendung an einem Rohrteil und Verfahren zum Anbringen eines Schallwandlers an einem Rohrteil Transducer for use on a pipe portion and method of mounting a transducer on a pipe part |
| 08/04/2005 | CA2553002A1 Automated drill string position survey |
| 08/04/2005 | CA2544711A1 Measuring device and drilling device for deep drillings |
| 08/03/2005 | EP1559055A2 A method and apparatus for dynamic checking and reporting system health |
| 08/03/2005 | EP1558914A2 In-situ detection and analysis of coal bed methane formations with optical instruments and methods and apparatus to facilitate methane production and analysis |
| 08/03/2005 | CN2714804Y Integrative wireless monitoring indicator |
| 08/03/2005 | CN1648690A Integrated acoustic transducer assembly |
| 08/03/2005 | CN1648410A Method for determining pressure of earth formations |
| 08/02/2005 | US6925392 Method for measuring fluid chemistry in drilling and production operations |
| 08/02/2005 | US6924745 System and method for monitoring packer slippage |
| 08/02/2005 | US6924645 Position and orientation locator/monitor |
| 08/02/2005 | US6923291 Apparatus for detecting geophysical energy |
| 08/02/2005 | US6923273 Well system |
| 08/02/2005 | US6923252 Borehole sounding device with sealed depth and water level sensors |
| 08/02/2005 | CA2447254C Well cavity positioning method |
| 08/02/2005 | CA2384379C High data rate acoustic telemetry system |
| 07/28/2005 | US20050162169 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/28/2005 | US20050161260 System for communicating information between a rig location and a cpmputer network and methods using the system |
| 07/28/2005 | US20050161258 Acoustic position measurement system for well bore formation |
| 07/28/2005 | US20050161231 Telemetry system for the bi-directional communication of data between a well point and a terminal unit situated on the surface |
| 07/28/2005 | US20050161215 Downhole Tool |
| 07/28/2005 | US20050160812 System and method for measurements of depth and velocity of instrumentation within a wellbore |
| 07/27/2005 | EP1556576A2 Drill pipe having an internally coated electrical pathway |
| 07/27/2005 | EP1149228B1 Apparatus for measuring downhole drilling efficiency parameters |
| 07/27/2005 | CN2713134Y Power down proof battery cartridge |
| 07/27/2005 | CN2713133Y Digital display rotational speed jig frequency measuring device |
| 07/27/2005 | CN2713132Y High temperature testing cable |
| 07/27/2005 | CN1644874A Mechanical wireless drilling inclinometers |
| 07/26/2005 | US6922056 Bore location system |
| 07/26/2005 | US6920943 Mapping tool for tracking and/or guiding an underground boring tool |
| 07/26/2005 | US6920936 Constant force actuator |
| 07/26/2005 | CA2382231C Oil well servicing system |
| 07/26/2005 | CA2366496C Steerable modular drilling assembly |
| 07/26/2005 | CA2305259C Downhole pump strainer data recording device and method |
| 07/26/2005 | CA2222386C A hole-finding apparatus having integrated sensors |
| 07/26/2005 | CA2158903C Bit-stabilized combination coring and drilling system |
| 07/26/2005 | CA2152254C Method of measuring flow velocities using tracer techniques |
| 07/21/2005 | WO2005066618A1 Electro-chemical sensor |
| 07/21/2005 | WO2005065364A2 Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 07/21/2005 | WO2004101946A3 Formation characterization using wellbore logging data |
| 07/21/2005 | US20050160025 Contingent convertible financial instruments |
| 07/21/2005 | US20050155794 Method and apparatus for rescaling measurements while drilling in different environments |
| 07/21/2005 | US20050155759 Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| 07/20/2005 | EP1554463A1 A measuring sonde for a hydrocarbon well |
| 07/20/2005 | EP1554462A2 Apparatus and method of monitoring and signaling for downhole tools |
| 07/20/2005 | EP1397579A4 Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 07/20/2005 | EP1386054A4 Flexible joint for well logging instruments |
| 07/20/2005 | EP1252416B1 Choke inductor for wireless communication and control in a well |
| 07/20/2005 | EP1240495B1 Improved method and apparatus for predicting the fluid characteristics in a well hole |
| 07/20/2005 | CN1641185A Downhole tools with a stirling cooler system |
| 07/20/2005 | CN1211654C Method and apparatus for ultrasonic imaging of cased well |
| 07/19/2005 | US6920395 Method and apparatus for determining flow rates |
| 07/19/2005 | US6920085 Downlink telemetry system |
| 07/19/2005 | CA2355549C Apparatus and method for propelling a data sensing apparatus into a subsurface formation |
| 07/14/2005 | WO2005064297A1 Interpretation of distributed temperature sensor data |
| 07/14/2005 | WO2005064117A1 Method of determining a fluid inflow profile of wellbore |
| 07/14/2005 | WO2005064116A1 Downhole flow measurement in a well |
| 07/14/2005 | WO2005064115A1 Tracer injector tool |
| 07/14/2005 | WO2005064114A1 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
| 07/14/2005 | WO2005062830A2 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 07/14/2005 | US20050154532 System and method for determining the inclination of a wellbore |
| 07/14/2005 | US20050152219 Acoustic transducers for tubulars |
| 07/14/2005 | US20050150713 Integrated acoustic transducer assembly |
| 07/14/2005 | US20050150691 High temperature environment tool system and method |
| 07/14/2005 | US20050150689 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
| 07/14/2005 | US20050150655 Wellbore apparatus with sliding shields |
| 07/14/2005 | US20050150653 Corrosion-Resistant Downhole Transmission System |
| 07/14/2005 | CA2551660A1 Interpretation of distributed temperature sensor data |
| 07/14/2005 | CA2551283A1 Method of determining a fluid inflow profile of wellbore |
| 07/14/2005 | CA2551282A1 Downhole flow measurement in a well |
| 07/13/2005 | EP1553260A2 Method for determining mud compressibility |
| 07/13/2005 | EP1552274A2 Borehole conductivity profiler |
| 07/13/2005 | EP1552108A1 Method for interpreting data measured in a hydrocarbon well in production |
| 07/13/2005 | EP1497532A4 Extended range emf antenna |
| 07/13/2005 | EP1394356A4 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 07/13/2005 | CN2709650Y Digital weight indicator |
| 07/12/2005 | US6917303 Logging sondes for use in boreholes |
| 07/12/2005 | US6917202 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 07/12/2005 | US6915849 Apparatus and methods for conveying instrumentation within a borehole using continuous sucker rod |
| 07/12/2005 | US6915848 Universal downhole tool control apparatus and methods |
| 07/12/2005 | US6915847 Testing a junction of plural bores in a well |
| 07/12/2005 | US6915686 Downhole sub for instrumentation |
| 07/07/2005 | WO2005008017A3 Instrumented drill head, related drilling/bolting machines, and methods |
| 07/07/2005 | US20050149264 System and Method to Interpret Distributed Temperature Sensor Data and to Determine a Flow Rate in a Well |
| 07/07/2005 | US20050145416 Method and system of transferring data gathered by downhole devices to surface devices |
| 07/07/2005 | US20050145406 Data Transmission System for a Downhole Component |
| 07/06/2005 | EP1551035A1 Handling tool for radioactive sources of logging while drilling devices |
| 07/06/2005 | EP1550790A1 Tracer injector tool |
| 07/06/2005 | EP1550788A2 Three dimensional steerable system |
| 07/06/2005 | EP1549822A2 Remote intervention logic valving method and apparatus |
| 07/06/2005 | EP1549820A1 Apparatus and method for transmitting a signal in a wellbore |
| 07/06/2005 | CN2707963Y Single well comprehensive metering test carriage |
| 07/06/2005 | CN2707962Y Test regulator for separated-zone water injection in oil field |
| 07/06/2005 | CN2707951Y Balanced water shut off pressure measurement packer |
| 07/06/2005 | CN2707944Y Pipe string grappling device for fixed point pressure measurement rod-pumped well |
| 07/06/2005 | CN1636108A In situ thermal processing of a hydrocarbon containing formation and improvement of won fluid before further processing |
| 07/06/2005 | CN1635262A Water regime logging method for oil gas of oil well |
| 07/05/2005 | US6914538 High-power well logging method and apparatus |