| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 03/25/2004 | WO2004025078A1 A measuring sonde for a hydrocarbon well |
| 03/25/2004 | WO2004015242B1 Inductive data coupler for use with downhole tool |
| 03/25/2004 | WO2004007909A3 System and method for obtaining and analyzing well data |
| 03/25/2004 | WO2003101047A3 A method and apparatus for high speed communication with a downhole tool |
| 03/25/2004 | US20040059554 Method of assaying downhole occurrences and conditions |
| 03/25/2004 | US20040059506 System and method for sensing leakage across a packer |
| 03/25/2004 | US20040055787 Method and system for circulating fluid in a well system |
| 03/25/2004 | US20040055749 Remote intervention logic valving method and apparatus |
| 03/24/2004 | EP1399760A1 Flexible dynamic housing |
| 03/24/2004 | EP0805959B1 Method for determination of flow rate in a fluid |
| 03/24/2004 | CN1484007A High-temp resisting petroleum downhole dynamic pressure sensor |
| 03/23/2004 | US6711529 Method for determining at least one optimal trajectory for reaching a fuzzy target situated in a medium starting from a point remote from the target |
| 03/23/2004 | US6710720 Pressure impulse telemetry apparatus and method |
| 03/23/2004 | US6708785 Fluid controlled adjustable down-hole tool |
| 03/23/2004 | US6708781 System and method for quantitatively determining variations of a formation characteristic after an event |
| 03/18/2004 | WO2004022916A1 Noise attenuation apparatus for borehole telemetry |
| 03/18/2004 | WO2004022915A1 Signal transmission system |
| 03/18/2004 | WO2004022905A1 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 03/18/2004 | US20040050588 Method for measuring formation properties with a time-limited formation test |
| 03/18/2004 | US20040050555 System and method for controlling downhole tools |
| 03/18/2004 | DE10337170A1 Bohrwerkzeug zum Bohren eines Bohrlochs A drilling tool for drilling a borehole |
| 03/18/2004 | CA2482457A1 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 03/17/2004 | EP1397704A2 Systems and methods for determining motion tool parameters in borehole logging |
| 03/17/2004 | EP1397661A2 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 03/17/2004 | EP1397579A1 Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 03/17/2004 | CN2606798Y Slide guide rail type well caliper |
| 03/16/2004 | US6707556 Apparatus and method for analyzing fluids |
| 03/16/2004 | US6706348 Composite spoolable tube with sensor |
| 03/16/2004 | US6705406 Replaceable electrical device for a downhole tool and method thereof |
| 03/16/2004 | US6705397 Liquid level detection for artificial lift system control |
| 03/16/2004 | CA2221152C Downhole flow control devices |
| 03/11/2004 | WO2004020790A2 Method and apparatus for logging a well using fiber optics |
| 03/11/2004 | WO2004020789A2 Method and apparatus for logging a well using a fiber optic line and sensors |
| 03/11/2004 | WO2004020776A2 Well treatment apparatus and method |
| 03/11/2004 | WO2004020774A2 Methods and systems to activate downhole tools with light |
| 03/11/2004 | US20040049346 Method and device for determining the quality of an oil well reserve |
| 03/11/2004 | US20040047534 Downhole sensing with fiber in exterior annulus |
| 03/11/2004 | US20040047235 Big bore transceiver |
| 03/11/2004 | US20040047234 Method of monitoring a drilling path |
| 03/11/2004 | US20040046558 Method for measuring digging position |
| 03/11/2004 | US20040045740 Downhole drilling apparatus and method for using same |
| 03/11/2004 | US20040045739 Mapping tool for tracking and/or guiding an underground boring tool |
| 03/11/2004 | US20040045706 Method for measuring formation properties with a time-limited formation test |
| 03/11/2004 | US20040045705 Downhole sensing with fiber in the formation |
| 03/11/2004 | US20040045351 Downhole force and torque sensing system and method |
| 03/10/2004 | EP1396607A2 Method for measuring formation properties with a time-limited formation test |
| 03/10/2004 | EP1395734A1 Conductive fluid flow logging tool |
| 03/10/2004 | EP1395729A1 Method of forming a trenchless flowline |
| 03/10/2004 | EP1276968B1 Logging sondes for use in boreholes |
| 03/10/2004 | CN2606172Y Universal flexible pup joint |
| 03/09/2004 | US6702041 Combined logging and drilling system |
| 03/09/2004 | US6702010 Apparatus and method for actuating arms |
| 03/04/2004 | WO2004018840A1 Use of distributed temperature sensors during wellbore treatments |
| 03/04/2004 | WO2003021301B1 Method and apparatus for determining the temperature of subterranean wells using fiber optic cable |
| 03/04/2004 | US20040043501 Monitoring reservoir conditions, estimating and quantifying concentrations of oil and gas in earth formations and determining operating and physical conditions of down hole tools |
| 03/04/2004 | US20040042703 Method and apparatus for sensing an environmental parameter in a wellbore |
| 03/04/2004 | US20040040745 Two solenoid guide system for horizontal boreholes |
| 03/04/2004 | US20040040717 Method for upward growth of a hydraulic fracture along a well bore sandpacked annulus |
| 03/04/2004 | US20040040715 In situ production of a blending agent from a hydrocarbon containing formation |
| 03/04/2004 | US20040040707 Well treatment apparatus and method |
| 03/04/2004 | US20040040705 Method and Apparatus for Determinining the Temperature of Subterranean Wells Using Fiber Optic Cable |
| 03/03/2004 | EP1394356A1 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 03/03/2004 | EP1394354A2 Hydraulic well control system |
| 03/03/2004 | CN2605381Y Oil-gas well measuring safety releasing device |
| 03/03/2004 | CN1140785C Non-intrusion fiber optic pressure-sensor for measuring unsteady pressures within pipe |
| 03/02/2004 | US6698536 Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system |
| 03/02/2004 | US6698535 Floating offset transmitter housing underground directional drilling tool |
| 03/02/2004 | US6698534 Direction control in well drilling |
| 03/02/2004 | US6698520 Light-intervention subsea tree system |
| 03/02/2004 | US6698516 Method for magnetizing wellbore tubulars |
| 02/29/2004 | CA2636896A1 Optical fiber conveyance, telemetry, and/or actuation |
| 02/26/2004 | WO2004016908A1 Horizontal wellbore pressure measurement |
| 02/26/2004 | WO2004005968A3 Pulsed deployment of a cable through a conduit located in a well |
| 02/26/2004 | WO2003041282A3 Passive two way borehole communication apparatus and method |
| 02/26/2004 | WO2003006778A3 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 02/26/2004 | WO2002084065A3 Drilling head of a drilling device, particularly a wash drilling head of a horizontal drilling device |
| 02/26/2004 | US20040039466 Method and apparatus for high speed data dumping and communication for a down hole tool |
| 02/26/2004 | US20040035608 System and method for telemetry in a wellbore |
| 02/26/2004 | US20040035577 Downhole flow meter |
| 02/26/2004 | US20040035199 Hydraulic and mechanical noise isolation for improved formation testing |
| 02/26/2004 | DE10236228A1 Borehole logging apparatus for drilling, has flow regulator with control piston controlling cross-section of opening of bypass opening based on pressure differential produced at entrance opening of housing and force of spring |
| 02/24/2004 | US6697298 High efficiency acoustic transmitting system and method |
| 02/24/2004 | US6697102 Bore hole camera with improved forward and side view illumination |
| 02/24/2004 | US6696684 Formation evaluation through azimuthal tool-path identification |
| 02/24/2004 | US6695052 Technique for sensing flow related parameters when using an electric submersible pumping system to produce a desired fluid |
| 02/24/2004 | CA2268104C Method of obtaining improved geophysical information about earth formations |
| 02/24/2004 | CA2152681C Slickline conveyed wellbore seismic receiver |
| 02/24/2004 | CA2144497C Modular measurement while drilling sensor assembly |
| 02/24/2004 | CA2118229C Remotely deployable pressure sensor |
| 02/19/2004 | WO2004015242A1 Inductive data coupler for use with downhole tool |
| 02/19/2004 | WO2003036024A3 Method and system for in situ heating a hydrocarbon containing formation by a u-shaped opening |
| 02/19/2004 | US20040033017 Apparatus for a coustic detection of particles in a flow using a fibre optic interferometer |
| 02/19/2004 | US20040031609 Method and system for accessing subterranean deposits from the surface |
| 02/19/2004 | US20040031319 Horizontal wellbore pressure measurement |
| 02/19/2004 | US20040031318 Method and apparatus for determining downhole pressures during a drilling operation |
| 02/19/2004 | DE10236238A1 Probe end for borehole heat collectors comprises a U-shaped polyethylene pipe section surrounded by heat conducting protective layer strengthened by reinforcing materials |
| 02/17/2004 | US6693554 Casing mounted sensors, actuators and generators |
| 02/17/2004 | US6693553 Reservoir management system and method |
| 02/17/2004 | US6693429 Flux orientation locating in a drilling system |
| 02/17/2004 | US6691805 Electrically conductive oil-based mud |