| Patents for G01V 11 - Prospecting or detecting by methods combining techniques covered by two or more of main groups (3,215) |
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| 11/10/1998 | US5835883 Method for determining distribution of reservoir permeability, porosity and pseudo relative permeability |
| 11/05/1998 | WO1998049581A1 Method for determining sedimentary rock pore pressure caused by effective stress unloading |
| 11/03/1998 | US5831156 Downhole system for well control and operation |
| 10/28/1998 | CN1197214A Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 10/27/1998 | US5828981 Generating pore types and synthetic capillary pressure curves from wireline logs using neural networks |
| 10/20/1998 | CA2144347C Bayesian sequential indicator simulation of lithology from seismic data |
| 10/14/1998 | EP0871045A2 Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 09/24/1998 | WO1998041885A1 Underground acoustic wave transmitter, receiver, transmitting/receiving method, and underground exploration using this |
| 09/22/1998 | US5812068 Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto |
| 09/22/1998 | US5810080 Device for exploring an underground formation crossed by a horizontal well comprising several anchorable sondes |
| 09/01/1998 | US5801642 Device for exploring an underground formation crossed by a horizontal well comprising several sensors permanently coupled with the wall |
| 08/26/1998 | CN1191265A Holefinding apparatus having integrated sensors |
| 08/06/1998 | WO1998034190A1 Method for determining distribution of reservoir permeability, porosity and pseudo relative permeability |
| 08/06/1998 | CA2268979A1 Method for determining distribution of reservoir permeability, porosity and pseudo relative permeability |
| 07/28/1998 | US5787050 Well test imaging |
| 07/02/1998 | WO1998028638A1 Method for prospecting petroleum products in the ground |
| 06/25/1998 | WO1998027444A2 Performing geoscience interpretation with simulated data |
| 04/28/1998 | US5744877 Downhole power transmission system |
| 04/07/1998 | US5737277 Method for computing borehole geometry from ultrasonic pulse echo data |
| 04/07/1998 | US5737219 Method of monitoring deformation of geological structures and predicting geodynamic events |
| 03/10/1998 | US5726449 Detecting apparatus and measuring method of warm object |
| 03/03/1998 | US5724311 Method and device for the long-term seismic monitoring of an underground area containing fluids |
| 02/10/1998 | US5717334 Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum |
| 01/27/1998 | US5711381 Bore location system having mapping capability |
| 01/06/1998 | US5706194 Program storage device |
| 12/16/1997 | US5699246 Method to estimate a corrected response of a measurement apparatus relative to a set of known responses and observed measurements |
| 12/03/1997 | EP0809922A1 Occupancy sensor and method of operating same |
| 11/25/1997 | US5692029 Detection of concealed explosives and contraband |
| 10/30/1997 | DE19713754A1 Modular borehole measurement probe obviating collection and storage of specialised, expensive and inflexible probes |
| 10/07/1997 | US5675147 System and method of petrophysical formation evaluation in heterogeneous formations |
| 09/18/1997 | WO1997034169A1 Method for analysing data in the exploration for minerals |
| 09/10/1997 | EP0793881A1 Communications protocol for well-logging digital telemetry system |
| 08/07/1997 | WO1997028466A1 Borehole logging system |
| 07/24/1997 | WO1997026562A1 System and method of petrophysical formation evaluation in heterogeneous formations |
| 07/08/1997 | US5646342 Method of Locating Hydrocarbon reserves |
| 06/17/1997 | US5640143 Occupancy sensor and method of operating same |
| 06/12/1997 | DE19545712A1 Abnormality detection system for detection of unidentified flying object |
| 06/10/1997 | US5638337 Method for computing borehole geometry from ultrasonic pulse echo data |
| 05/27/1997 | US5633590 Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present |
| 05/14/1997 | EP0773344A1 Device for exploring a downhole formation traversed by a horizontal borehole with several anchorable probes |
| 04/23/1997 | EP0769606A1 Exploration device for a subterranean formation traversed by a horizontal well comprising a plurality of sensors |
| 02/04/1997 | US5600303 Detection of concealed explosives and contraband |
| 02/04/1997 | CA2168651C Improved slick line system with real-time surface display |
| 01/22/1997 | EP0754307A1 Fluid detection means |
| 01/21/1997 | US5596142 Well logging apparatus comprising a measuring pad and a combinaton device including such apparatus |
| 12/18/1996 | EP0748457A1 Method and device for the long-term seismic monitoring of an underground area containing fluids |
| 12/18/1996 | EP0666990B1 Method of monitoring deformation of geological structures and predicting geodynamic events |
| 12/17/1996 | US5585790 Method and apparatus for determining alignment of borehole tools |
| 12/17/1996 | CA2129940C Cable-locating apparatus and method |
| 12/04/1996 | EP0745870A2 Non-unique seismic lithologic inversion for subterranean modeling |
| 12/03/1996 | US5581024 Downhole depth correlation and computation apparatus and methods for combining multiple borehole measurements |
| 10/29/1996 | US5570024 Determining resistivity of a formation adjacent to a borehole having casing using multiple electrodes and with resistances being defined between the electrodes |
| 09/25/1996 | EP0733917A2 Measuring probe for hydrogeologie measurements |
| 09/18/1996 | CN1131465A Improved slick line system with real-time surface display |
| 08/15/1996 | WO1996025021A1 Occupancy sensor and method of operating same |
| 07/11/1996 | WO1996021165A1 Method and device for the long-term seismic monitoring of an underground area containing fluids |
| 07/02/1996 | USH1561 Method and apparatus for detection of seismic and electromagnetic waves |
| 06/26/1996 | EP0718641A2 Drilling system with downhole apparatus for transforming multiple downhole sensor measurements into parameters of interest and for causing the drilling direction to change in response thereto |
| 06/19/1996 | EP0716752A1 Evaluation method and apparatus in seismics |
| 06/18/1996 | US5528556 Combination well logging device |
| 06/11/1996 | US5524709 Method for acoustically coupling sensors in a wellbore |
| 06/04/1996 | US5522260 Method and apparatus for determining a depth correction for a logging tool in a well |
| 05/22/1996 | EP0713104A2 Downhole depth correlation and computation apparatus and methods for combining multiple borehole measurements |
| 05/22/1996 | EP0712499A1 Improved slick line system with real-time surface display |
| 05/07/1996 | US5513528 Logging while drilling method and apparatus for measuring standoff as a function of angular position within a borehole |
| 04/16/1996 | US5508514 Well logging device with a pad |
| 03/26/1996 | US5502686 Method and apparatus for imaging a borehole sidewall |
| 03/05/1996 | US5495755 Slick line system with real-time surface display |
| 02/29/1996 | DE19512537A1 System for detection and removal or detonation of buried mines |
| 02/21/1996 | CN1117112A A combination well logging device |
| 02/02/1996 | CA2154596A1 Method and apparatus for imaging a borehole sidewall |
| 01/18/1996 | WO1996001408A1 Seismic anchor |
| 01/02/1996 | US5481502 System of acquistion and centralization of data obtained through a permanent plant for exploring a geologic formation |
| 12/12/1995 | US5475187 For use in a borehole to provide seismic signals when energized remotely |
| 12/05/1995 | US5473158 Logging while drilling method and apparatus for measuring formation characteristics as a function of angular position within a borehole |
| 11/15/1995 | EP0682330A1 Detecting apparatus and measuring method of warm object |
| 10/26/1995 | WO1995028659A1 Fluid detection means |
| 10/17/1995 | US5457995 Horizontal boring pipe penetration detection system and method |
| 09/27/1995 | EP0674189A2 Seismic exploration |
| 09/20/1995 | EP0575318B1 An electronic measurement apparatus movable in a cased borehole and compensating for casing resistance differences |
| 09/12/1995 | US5448912 Borehole gravity density measuring system |
| 08/16/1995 | EP0666990A1 Method of monitoring deformation of geological structures and predicting geodynamic events. |
| 08/01/1995 | US5438265 Metallic cable-locating apparatus and method having an image capturing means |
| 07/19/1995 | EP0663511A2 Logging while drilling method and apparatus for measuring formation characteristics as a function of angular position within a borehole |
| 07/11/1995 | CA1336261C Device for measuring or intervening in a well, method using the device and use of the device |
| 05/16/1995 | US5416750 Bayesian sequential indicator simulation of lithology from seismic data |
| 05/16/1995 | US5416697 Method for selecting a drill bit for use in drilling a well |
| 05/09/1995 | US5413174 Signal transmission through deflected well tubing |
| 04/12/1995 | EP0647859A1 A combination well logging device |
| 03/29/1995 | EP0645646A1 Cable-locating apparatus and method |
| 03/09/1995 | WO1995006886A1 Evaluation of seismic sequence lithology |
| 03/07/1995 | US5395768 Measuring resistivity of brines and filtrates from muds prepared with shales |
| 02/09/1995 | WO1995004290A1 Improved slick line system with real-time surface display |
| 12/06/1994 | US5370545 Process and device for the electrical interconnecting of equipments such as well tools |
| 11/08/1994 | US5363095 Communicating drilling information to the surface during drilling operations |
| 11/08/1994 | US5363094 Stationary system for the active and/or passive monitoring of an underground deposit |
| 09/20/1994 | US5349528 Method apparatus for determination of porosity lithological composition |
| 07/19/1994 | US5331318 Communications protocol for digital telemetry system |
| 07/19/1994 | US5330364 Electrical connector for well surveying tool |
| 07/19/1994 | CA2009655C Integrating multiple mappable variables for oil and gas exploration |