Issued Patents All Time
Showing 51–75 of 117 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7812610 | Method and apparatus for locating well casings from an adjacent wellbore | Christophe Dupuis, Gerald N. Minerbo | 2010-10-12 |
| 7795872 | Determining correction factors representing effects of different portions of a lining structure | Frank Morrison, Edward Nichols, Hong Zhang, Richard A. Rosthal | 2010-09-14 |
| 7782060 | Integrated electrode resistivity and EM telemetry tool | Jan W. Smits | 2010-08-24 |
| 7766101 | System and method for making drilling parameter and or formation evaluation measurements during casing drilling | — | 2010-08-03 |
| 7759942 | Lightweight, low cost structure for formation conductivity measuring instrument | Mark Frey | 2010-07-20 |
| 7710820 | Seabed seismic source apparatus | — | 2010-05-04 |
| 7703548 | Magnetic ranging while drilling parallel wells | — | 2010-04-27 |
| 7692428 | Retrievable formation resistivity tool | John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more | 2010-04-06 |
| 7669668 | System, apparatus, and method of conducting measurements of a borehole | Ruben Martinez, Jan W. Smits, Reza Taherian | 2010-03-02 |
| 7605715 | Electromagnetic wellbore telemetry system for tubular strings | Nobuyoshi Niina | 2009-10-20 |
| 7586310 | While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information | Min-Yi Chen, Anthony Collins, Jeffrey A. Tarvin | 2009-09-08 |
| 7575681 | Microfluidic separator | Dan Angelescu, Philippe Salamitou, Joyce Wong, Bhavani Raghuraman | 2009-08-18 |
| 7477162 | Wireless electromagnetic telemetry system and method for bottomhole assembly | — | 2009-01-13 |
| 7466136 | While-drilling methodology for determining earth formation characteristics and other useful information based upon streaming potential measurements | Min-Yi Chen, Anthony Collins, Jeffrey A. Tarvin | 2008-12-16 |
| 7436183 | Replaceable antennas for wellbore apparatus | — | 2008-10-14 |
| 7413021 | Method and conduit for transmitting signals | Raghu Madhavan, Bruce W. Boyle | 2008-08-19 |
| 7388380 | While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information | Min-Yi Chen, Anthony Collins, Jeffrey A. Tarvin | 2008-06-17 |
| 7301345 | While-drilling methodology for estimating formation pressure based upon streaming potential measurements | Min-Yi Chen, Anthony Collins, Jeffrey A. Tarvin | 2007-11-27 |
| 7284605 | Apparatus and methods for reducing stand-off effects of a downhole tool | Jan W. Smits | 2007-10-23 |
| 7215125 | Method for measuring a formation parameter while inserting a casing into a wellbore | — | 2007-05-08 |
| 7187297 | Methods for sealing openings in tubulars | John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more | 2007-03-06 |
| 7183778 | Apparatus and method to measure fluid resistivity | Dean Homan, Andrew Cao | 2007-02-27 |
| 7096961 | Method and apparatus for performing diagnostics in a wellbore operation | Nicolas Pacault, Bruce W. Boyle | 2006-08-29 |
| 7059428 | Monitoring a reservoir in casing drilling operations using a modified tubular | Mark Frey, David L. Smith, Jan W. Smits | 2006-06-13 |
| 6995684 | Retrievable subsurface nuclear logging system | — | 2006-02-07 |