| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 01/03/2006 | US6981548 heating and pyrolysis of heavy hydrocarbon sections in subterranean wells to produce light hydrocarbons; reduced viscosity improves movement; fluid removal in liquid and/or vapor phase |
| 01/03/2006 | CA2316467C Dynamic pressure device for oil drill systems |
| 01/03/2006 | CA2195722C Servo-driven mud pulser |
| 12/29/2005 | WO2005124397A1 Apparatus and methods for self-powered communication and sensor network |
| 12/29/2005 | WO2005124395A2 Methods and apparatus for measuring streaming potentials and determining earth formation characteristics |
| 12/29/2005 | WO2005124103A2 Apparatus and methods for positioning in a borehole |
| 12/29/2005 | WO2005124102A1 Wellbore surveying |
| 12/29/2005 | US20050285754 Downhole transmission system |
| 12/29/2005 | US20050285753 Downhole telemetry system for wired tubing |
| 12/29/2005 | US20050285751 Downhole Drilling Network Using Burst Modulation Techniques |
| 12/29/2005 | US20050285706 Downhole transmission system comprising a coaxial capacitor |
| 12/29/2005 | US20050284664 Dual wall drill string assembly |
| 12/29/2005 | US20050284663 Assessing down-hole drilling conditions |
| 12/29/2005 | US20050284662 Communication adapter for use with a drilling component |
| 12/29/2005 | US20050284659 Closed-loop drilling system using a high-speed communications network |
| 12/29/2005 | US20050284629 Downhole formation testing tool |
| 12/29/2005 | US20050284627 Flowshot technique |
| 12/29/2005 | US20050284626 Flowshot technique |
| 12/29/2005 | US20050284625 System and method for monitoring and removing blockage in a downhole oil and gas recovery operation |
| 12/29/2005 | US20050284613 [heat pipe cooling system] |
| 12/29/2005 | US20050284531 Drill pipe assembly |
| 12/29/2005 | US20050284221 Shape-acceleration measurement device and method |
| 12/29/2005 | DE202005016399U1 Arrangement for determining diameter/radius of especially gas or liquid-filled cavities in stable material has hose balance for determining height difference between pivoted in and out positions of predefined section |
| 12/29/2005 | DE102005024628A1 Verfahren zum Bestimmen einer Eigenschaft einer Formationsflüssigkeit sowie ein NMR-Sensor hierfür A method for determining a property of a formation fluid and a NMR sensor for this purpose |
| 12/29/2005 | CA2794316A1 Methods and apparatus for measuring streaming potentials and determining earth formation characteristics |
| 12/29/2005 | CA2570364A1 Apparatus and methods for positioning in a borehole |
| 12/29/2005 | CA2570344A1 Apparatus and methods for self-powered communication and sensor network |
| 12/29/2005 | CA2570080A1 Wellbore surveying |
| 12/28/2005 | EP1609947A1 Deployment of underground sensors in casing |
| 12/28/2005 | EP1540137A4 System and mehtod for automating or metering fluid recovered at a well |
| 12/28/2005 | EP1434928B1 Magnetic signalling in pipelines |
| 12/28/2005 | EP1290311B1 Sequential hydraulic control system for use in subterranean well |
| 12/28/2005 | EP1127210B1 Connector for an expandable tubing string |
| 12/28/2005 | CN2748636Y Metering and testing device for well testing machine |
| 12/28/2005 | CN1712993A Device and method for determining mud slowness in a borehole |
| 12/28/2005 | CN1712668A Magnetic detector of perforation evelet quality for oil well casing pipe |
| 12/27/2005 | US6978833 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 12/27/2005 | US6978832 Downhole sensing with fiber in the formation |
| 12/27/2005 | US6978831 System and method for sensing data in a well during fracturing |
| 12/27/2005 | US6978828 Heat pipe cooling system |
| 12/27/2005 | US6978672 Wireline apparatus for measuring steaming potentials and determining earth formation characteristics |
| 12/25/2005 | CA2747236A1 Shape-acceleration measurement device and method |
| 12/22/2005 | WO2005121840A1 Method for solving implicit reservoir simulation matrix equation |
| 12/22/2005 | WO2005121507A1 System and method for determining pump underperformance |
| 12/22/2005 | WO2005114134A3 Downhole probe assembly |
| 12/22/2005 | WO2005103448A3 Belt load distribution device |
| 12/22/2005 | US20050283315 Estimation of borehole geometry parameters and lateral tool displacements |
| 12/22/2005 | US20050283276 Real time subsea monitoring and control system for pipelines |
| 12/22/2005 | US20050280420 Boring technique using locate point measurements for boring tool depth prediction |
| 12/22/2005 | US20050279532 Drilling wellbores with optimal physical drill string conditions |
| 12/22/2005 | US20050279510 Method and System to Deploy Control Lines |
| 12/22/2005 | US20050279508 Loaded Transducer for Downhole Drilling Components |
| 12/22/2005 | US20050279506 Flow-biased sequencing valve |
| 12/22/2005 | US20050279498 Apparatus and methods for positioning in a borehole |
| 12/22/2005 | US20050279497 Completion apparatus for measuring streaming potentials and determining earth formation characteristics |
| 12/22/2005 | US20050279496 Apparatus and Method to Detect Actuation of a Flow Control Device |
| 12/22/2005 | US20050279495 Methods for locating formation fractures and monitoring well completion using streaming potential transients information |
| 12/22/2005 | US20050279161 Wireline apparatus for measuring streaming potentials and determining earth formation characteristics |
| 12/22/2005 | DE19950340B4 Verfahren und Vorrichtung zum Messen des Verlaufs eines Bohrlochs Method and apparatus for measuring the progress of a borehole |
| 12/22/2005 | CA2569102A1 Method for solving implicit reservoir simulation matrix equation |
| 12/21/2005 | EP1607571A2 Steerable modular drilling assembly |
| 12/21/2005 | EP1350309A4 Internal power source for downhole detection system |
| 12/21/2005 | EP1220974B1 Method of drilling a wellbore with disengagable couplers |
| 12/21/2005 | EP1200708B1 Apparatus for optimizing production of multi-phase fluid |
| 12/21/2005 | EP0862682B1 Autonomous downhole oilfield tool |
| 12/21/2005 | CN1711405A Downhole hydraulic control line connector |
| 12/21/2005 | CN1710249A Rapid logging platform technique for special well |
| 12/20/2005 | US6978211 Methods and systems for using wavelet analysis in subterranean applications |
| 12/20/2005 | US6977367 Providing a light cell in a wellbore |
| 12/20/2005 | US6976535 Method of utilizing flowable devices in wellbores |
| 12/20/2005 | US6976533 Method and system for accessing subterranean deposits from the surface |
| 12/20/2005 | US6976392 Atomic clock for downhole applications |
| 12/20/2005 | CA2385757C Method and apparatus for multilateral well entry |
| 12/20/2005 | CA2361026C System for separately producing water and oil from a reservoir |
| 12/18/2005 | CA2510212A1 Method and system to deploy control lines |
| 12/15/2005 | WO2005119390A2 Real time subsea monitoring and control system for pipelines |
| 12/15/2005 | WO2005119298A2 Method for generating a 3d earth model |
| 12/15/2005 | US20050278123 Automated bore planning system for horizontal directional drilling |
| 12/15/2005 | US20050274518 Separable plug for use in a wellbore |
| 12/15/2005 | US20050274514 Structure for a cable connection head |
| 12/15/2005 | US20050274513 System and method for determining downhole conditions |
| 12/15/2005 | US20050274512 Determination of formation anistropy, dip and azimuth |
| 12/15/2005 | US20050274511 Separable plug for use with a wellbore tool |
| 12/15/2005 | US20050274510 Electroconductive proppant compositions and related methods |
| 12/15/2005 | US20050274199 Flow meter using an expanded tube section and sensitive differential pressure measurement |
| 12/15/2005 | US20050274194 Fiber optic differential pressure sensor |
| 12/15/2005 | CA2568707A1 Method for generating a 3d earth model |
| 12/14/2005 | EP1605281A1 Logging tool with a parasitic radiation shield and method of logging with such a tool |
| 12/14/2005 | EP1604096A1 Method for determining a position of an object |
| 12/14/2005 | EP1354127B1 Drilling signalling system |
| 12/14/2005 | CN2746123Y Antivibration probe of under well electronic teleclinometer |
| 12/14/2005 | CN2746122Y Special aeration type positive pressure explosion-proof testing drag pof for oil field |
| 12/14/2005 | CN1707290A Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
| 12/14/2005 | CN1707289A Adaptive borehole assembly visualization in a three-dimensional scene |
| 12/13/2005 | US6975244 Oscillating shear valve for mud pulse telemetry and associated methods of use |
| 12/13/2005 | US6975243 Downhole tubular with openings for signal passage |
| 12/13/2005 | US6975119 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 12/13/2005 | US6975112 Systems and methods of determining motion tool parameters in borehole logging |
| 12/08/2005 | WO2005116401A1 Device for examining rotor drilled holes |
| 12/08/2005 | WO2005116388A1 System and methods using fiber optics in coiled tubing |