Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6745844 | Hydraulic power source for downhole instruments and actuators | — | 2004-06-08 |
| 6702018 | Apparatus and method for gravel packing an interval of a wellbore | Ronald W. McGregor, Travis Hailey, Robert Crow, Philip D. Nguyen | 2004-03-09 |
| 6634429 | Upper zone isolation tool for intelligent well completions | Travis W. Cavender | 2003-10-21 |
| 6565093 | Seal structure for downhole tool | Stephen L. Crow, Timothy Edward Harms, Robert W. Crow, Ralph Jones | 2003-05-20 |
| 6557634 | Apparatus and method for gravel packing an interval of a wellbore | Travis Hailey, Stephen L. Crow, Philip D. Nguyen | 2003-05-06 |
| 6397949 | Method and apparatus for production using a pressure actuated circulating valve | David Walker, Dewayne Turner, Mike Ritter | 2002-06-04 |
| 5819854 | Activation of downhole tools | James C. Doane, Henry Joe Jordan, Jr. | 1998-10-13 |
| 5667016 | Packer with back-up retrieving method | Jeffrey J. Lembcke | 1997-09-16 |
| 5558153 | Method & apparatus for actuating a downhole tool | Michael W. Holcombe, David Rothers, Steve C. Owens, James C. Doane | 1996-09-24 |
| 5311938 | Retrievable packer for high temperature, high pressure service | James D. Hendrickson, Colby M. Ross | 1994-05-17 |
| 5244044 | Catcher sub | — | 1993-09-14 |
| 5211226 | Metal-to-metal seal for oil well tubing string | James D. Hendrickson, John C. Gano | 1993-05-18 |
| 5085647 | Rigid needle cover with needle sealing plug and method of manufacture thereof | Roger L. Crouse | 1992-02-04 |
| 4805696 | Hydraulic release tubing seal divider | — | 1989-02-21 |
| 4671354 | Well packer | Dhirajlal C. Patel, Dennis D. Rood, Richard M. Sproul | 1987-06-09 |
| 4487258 | Hydraulically set well packer | Alan Tancel Jackson | 1984-12-11 |
| 4457369 | Packer for high temperature high pressure wells | — | 1984-07-03 |
| 4289202 | Well tubing coupling apparatus | — | 1981-09-15 |