Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7373979 | Workstring and a method for gravel packing | Martin P. Coronado, Rami J. Jasser, James R. Zachman | 2008-05-20 |
| 7096946 | Rotating blast liner | Rami J. Jasser, Martin P. Coronado, John A. Nelson | 2006-08-29 |
| 6843480 | Seal ring for well completion tools | John A. Nelson | 2005-01-18 |
| 5462121 | Failsafe liner installation assembly and method | Phillip W. Schmuck, Steven R. Hayter, James R. Zachman | 1995-10-31 |
| 5360069 | Failsafe liner installation assembly and method | Phillip W. Schmuck, Steven R. Hayter, James R. Zachman | 1994-11-01 |
| 5335727 | Fluid loss control system for gravel pack assembly | H. Mitchell Cornette, Phillip W. Schmuck | 1994-08-09 |
| 5327960 | Gravel pack installations for wells | H. Mitchell Cornette, Robert K. Bethel | 1994-07-12 |
| 5323852 | Torque limiter for auger gravel pack assembly | H. Mitchell Cornette, Robert K. Bethel, Steven R. Hayter | 1994-06-28 |
| 4915172 | Method for completing a non-vertical portion of a subterranean well bore | Joseph F. Donovan, Edward C. Spatz, Elmer R. Peterson, John B. Weirich | 1990-04-10 |
| 4856591 | Method and apparatus for completing a non-vertical portion of a subterranean well bore | Joseph F. Donovan, Edward C. Spatz, Elmer R. Peterson, John B. Weirich | 1989-08-15 |
| 4708200 | Apparatus for maintaining clean fluid in a chamber in a subterranean well tool | Joseph F. Donovan | 1987-11-24 |
| 4667735 | Fluid pressure activated firing head for providing clean fluid | Joseph F. Donovan | 1987-05-26 |
| 4611658 | High pressure retrievable gravel packing apparatus | Rodney J. Wetzel | 1986-09-16 |
| 4541484 | Combination gravel packing device and method | James R. Zachman | 1985-09-17 |
| 4540051 | One trip perforating and gravel pack system | Phillip W. Schmuck, Rodney J. Wetzel | 1985-09-10 |
| 4431058 | Wash tool method for subterranean wells | Jack Spencer | 1984-02-14 |