Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8622124 | Well treatment using electric submersible pumping system | — | 2014-01-07 |
| 8584747 | Enhancing well fluid recovery | — | 2013-11-19 |
| 8371811 | System and method for improving flow in pumping systems | — | 2013-02-12 |
| 8337142 | System and method for reducing thrust acting on submersible pumping components | Matthew R. Hackworth | 2012-12-25 |
| 8261834 | Well treatment using electric submersible pumping system | — | 2012-09-11 |
| 8066476 | Electrical submersible pump stage construction | Jacques Orban, Mikhail Gotlib | 2011-11-29 |
| 7874366 | Providing a cleaning tool having a coiled tubing and an electrical pump assembly for cleaning a well | Marc Allcorn, Jing H. Chow, Matthew R. Hackworth, John David Rowatt, Thomas Allan | 2011-01-25 |
| 7857577 | System and method of pumping while reducing secondary flow effects | — | 2010-12-28 |
| 7648332 | System and method for reducing thrust acting on submersible pumping components | Matthew R. Hackworth | 2010-01-19 |
| 7591321 | Zonal isolation tools and methods of use | John R. Whitsitt, Carlos Araque, Philippe Gambier, Dinesh R. Patel, Chad Hardwick +5 more | 2009-09-22 |
| 7549837 | Impeller for centrifugal pump | Matthew R. Hackworth, Norwood R. Harrell | 2009-06-23 |
| 7326037 | Centrifugal pumps having non-axisymmetric flow passage contours, and methods of making and using same | — | 2008-02-05 |
| 7051812 | Fracturing tool having tubing isolation system and method | L. Michael McKee, Keith A. Ryder | 2006-05-30 |
| 7011157 | Method and apparatus for cleaning a fractured interval between two packers | James M. Costley, Randolph J. Sheffield, L. Michael McKee | 2006-03-14 |
| 6840328 | Anti-extrusion apparatus and method | L. Michael McKee, Stephen D. Hill | 2005-01-11 |
| 6823945 | Pressure compensating apparatus and method for downhole tools | Avel Z. Ortiz | 2004-11-30 |
| 6776239 | Tubing conveyed fracturing tool and method | Stephen D. Hill, Randolph J. Sheffield, Howard L. McGill, James M. Costley | 2004-08-17 |
| 6668938 | Cup packer | Randolph J. Sheffield, Mark Callister Oettli, Jose Hurtado | 2003-12-30 |
| 6655461 | Straddle packer tool and method for well treating having valving and fluid bypass system | Randolph J. Sheffield, Mark Callister Oettli | 2003-12-02 |
| 6533037 | Flow-operated valve | Howard L. McGill, James M. Costley, Randolph J. Sheffield, Warren Zemlak | 2003-03-18 |
| 6439313 | Downhole machining of well completion equipment | Hubertus V. Thomeer, James M. Costley, Randolph J. Sheffield, Marc Allcorn, Mark Callister Oettli | 2002-08-27 |
| 6425443 | Pressure compensated disconnect system and method | Stephen D. Hill, James M. Costley, Mark Callister Oettli, Randolph J. Sheffield | 2002-07-30 |
| 6173771 | Apparatus for cleaning well tubular members | Lawrence J. Leising | 2001-01-16 |
| 6062311 | Jetting tool for well cleaning | Ashley Bernard Johnson, David Scott | 2000-05-16 |
| 5613555 | Inflatable packer with wide slat reinforcement | Robert M. Sorem | 1997-03-25 |