Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9145885 | Electrical submersible pump with reciprocating linear motor | Jinjiang Xiao | 2015-09-29 |
| 9140102 | System for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well | Kirk M. Bartko | 2015-09-22 |
| 8816689 | Apparatus and method for multi-component wellbore electric field Measurements using capacitive sensors | Daniele Colombo, Timothy H. Keho, Michael Jervis | 2014-08-26 |
| 8800668 | Partially retrievable safety valve | Stephen W. Smith | 2014-08-12 |
| 8800652 | Method for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well | Kirk M. Bartko | 2014-08-12 |
| 8636054 | Position indicating multiplexed control system and method for downhole well tools | Mitchell C. Smithson | 2014-01-28 |
| 8434571 | Securement of lines to downhole well tools | Bharathwaj Kannan | 2013-05-07 |
| 7926581 | Well tool having enhanced packing element assembly | Gregory S. Marshall, David W. Teale | 2011-04-19 |
| 7191828 | Hydraulically set concentric packer with multiple umbilical bypass through the piston | Napoleon Arizmendi | 2007-03-20 |
| 6659184 | Multi-line back pressure control system | Timothy R. Tips, Richard P. Rubbo | 2003-12-09 |
| 6575237 | Hydraulic well control system | Daniel George Purkis | 2003-06-10 |
| 6567013 | Digital hydraulic well control system | Daniel George Purkis | 2003-05-20 |
| 6470970 | Multiplier digital-hydraulic well control system and method | Dan Purkis, Richard P. Rubbo | 2002-10-29 |
| 6414905 | Method and apparatus for communicating coded messages in a wellbore | Steve C. Owens, David Rothers, Douglas J. Lehr, Michael W. Holcombe | 2002-07-02 |
| 6179052 | Digital-hydraulic well control system | Daniel George Purkis | 2001-01-30 |
| 6093262 | Corrosion resistant solenoid valve | — | 2000-07-25 |
| 6056327 | High pressure hydraulic line connector | Napoleon Arizmendi | 2000-05-02 |
| 6055213 | Subsurface well apparatus | Richard P. Rubbo, Dan Bangert, Kevin R. Jones, Steven C. Owens | 2000-04-25 |
| 6026899 | High expansion slip system | Napoleon Arizmendi | 2000-02-22 |
| 5979558 | Variable choke for use in a subterranean well | Napoleon Arizmendi | 1999-11-09 |
| 5833490 | High pressure instrument wire connector | — | 1998-11-10 |
| 5730217 | Vacuum insulated converter for extending the life span of electronic components | Steve Owens, Gary Elliott | 1998-03-24 |
| 5720342 | Integrated converter for extending the life span of electronic components | Steve Owens, Gary Elliott | 1998-02-24 |
| 5666050 | Downhole magnetic position sensor | Steve Owens | 1997-09-09 |
| 5647435 | Containment of downhole electronic systems | Steve Owens, Gary Elliott | 1997-07-15 |