Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6672387 | Oil and gas production with downhole separation and reinjection of gas | John M. Klein, Steven Petullo, Curtis G. Blount | 2004-01-06 |
| 6564865 | Oil and gas production with downhole separation and reinjection of gas | James L. Cawvey, John M. Klein, Mark D. Stevenson, Steven Svedeman, Steven Petullo +1 more | 2003-05-20 |
| 6283204 | Oil and gas production with downhole separation and reinjection of gas | Mark D. Stevenson, John M. Klein, James L. Cawvey | 2001-09-04 |
| 6260619 | Oil and gas production with downhole separation and compression of gas | Steven Svedeman, Steven Petullo, John M. Klein, James L. Cawvey, Mark D. Stevenson | 2001-07-17 |
| 6189614 | Oil and gas production with downhole separation and compression of gas | Mark D. Stevenson, John M. Klein, James L. Cawvey | 2001-02-20 |
| 6056054 | Method and system for separating and injecting water in a wellbore | Mark D. Stevenson, John M. Klein, James L. Cawvey | 2000-05-02 |
| 6053249 | Method and apparatus for injecting gas into a subterranean formation | Mark D. Stevenson | 2000-04-25 |
| 6039116 | Oil and gas production with periodic gas injection | Mark D. Stevenson | 2000-03-21 |
| 6035934 | Method and system for separating and injecting gas in a wellbore | Mark D. Stevenson, John M. Klein, James L. Cawvey | 2000-03-14 |
| 6032737 | Method and system for increasing oil production from an oil well producing a mixture of oil and gas | Mark D. Stevenson, John M. Klein, James L. Cawvey, David D. Hearn | 2000-03-07 |
| 6026901 | Method and system for separating and injecting gas in a wellbore | Mark D. Stevenson, John M. Klein, James L. Cawvey | 2000-02-22 |
| 5988275 | Method and system for separating and injecting gas and water in a wellbore | James L. Cawvey, Mark D. Stevenson, John M. Klein | 1999-11-23 |
| 5970422 | Method for generating a flow profile of a wellbore from pulsed neutron logs | James J. Kohring, Robert North | 1999-10-19 |
| 5963037 | Method for generating a flow profile of a wellbore using resistivity logs | Becky A. Watson, Robert North | 1999-10-05 |
| 5794697 | Method for increasing oil production from an oil well producing a mixture of oil and gas | John R. Wolflick, James L. Cawvey, John Whitworth, David D. Hearn | 1998-08-18 |
| 5533572 | System and method for measuring corrosion in well tubing | Stephen Gerlek, David L. Lagerlef, Raymond Wydrinski | 1996-07-09 |
| 5458200 | System for monitoring gas lift wells | David L. Lagerlef, Stephen Gerlek, Charles M. Hightower, Raymond Wydrinksi | 1995-10-17 |