Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738559 | Downhole tools comprising composite sealing elements | Charles Timothy Smith, Paul M. Rau | 2020-08-11 |
| 9359863 | Downhole plug apparatus | Donnie G. Loveday, Donny Winslow, John T. Brandell, Earl Webb | 2016-06-07 |
| 9273533 | Well tool including swellable material and integrated fluid for initiating swelling | David B. Allison, Alan B. Webb, Christopher J. Chalker, Kristian Solhaug | 2016-03-01 |
| 9010442 | Method of completing a multi-zone fracture stimulation treatment of a wellbore | Zachary William Walton | 2015-04-21 |
| 8869886 | Method to restrict the number of cycles in a continuous j-slot in a downhole tool | Donald G. Loveday | 2014-10-28 |
| 8342244 | Methods and apparatuses for releasing a chemical into a well bore upon command | Roger L. Schultz, Lance E. Brothers, Sam Lewis | 2013-01-01 |
| 8136594 | Methods and apparatuses for releasing a chemical into a well bore upon command | Roger L. Schultz, Lance E. Brothers, Sam Lewis | 2012-03-20 |
| 7866408 | Well tool including swellable material and integrated fluid for initiating swelling | David B. Allison, Alan B. Webb, Christopher J. Chalker, Kristian Solhaug | 2011-01-11 |
| 7442932 | High temperature imaging device | Roger L. Schultz, James Joseph Freeman, Neal G. Skinner | 2008-10-28 |
| 7234517 | System and method for sensing load on a downhole tool | Roger L. Schultz, James C. Tucker, Lee W. Stepp, Phillip M. Starr | 2007-06-26 |
| 7044230 | Method for removing a tool from a well | Phillip M. Starr, Loren Swor | 2006-05-16 |
| 6926086 | Method for removing a tool from a well | Michael L. Patterson, Loren Swor, Phillip M. Starr, Raymund Meijs, Danny D. Delozier +1 more | 2005-08-09 |
| 6672407 | Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation | — | 2004-01-06 |
| 6601646 | Apparatus and method for sequentially packing an interval of a wellbore | Tommy Frank Grigsby | 2003-08-05 |
| 6397950 | Apparatus and method for removing a frangible rupture disc or other frangible device from a wellbore casing | James C. Tucker, James R. Birchak, Paul F. Rodney, Neal G. Skinner | 2002-06-04 |
| 6095247 | Apparatus and method for opening perforations in a well casing | Mike Navarette, Jimmie D. Weaver, Richard L. Giroux, David D. Szarka | 2000-08-01 |
| 5758726 | Ball drop head with rotating rings | David F. Laurel | 1998-06-02 |
| 5718287 | Apparatus for downhole injection and mixing of fluids into a cement slurry | Ronald J. Crook, Richard R. Jones | 1998-02-17 |
| 5533570 | Apparatus for downhole injection and mixing of fluids into a cement slurry | Ronald J. Crook, Richard R. Jones | 1996-07-09 |
| 5379835 | Casing cementing equipment | — | 1995-01-10 |
| 5364110 | Downhole tool metal-to-metal seal | John T. Brandell, David D. Szarka, Bobby L. Sullaway | 1994-11-15 |
| 5314015 | Stage cementer and inflation packer apparatus | John T. Brandell, Richard L. Giroux, Lee W. Stepp | 1994-05-24 |
| 5299640 | Knife gate valve stage cementer | John T. Brandell, Charles F. VanBerg, Jr. | 1994-04-05 |
| 5271468 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Donald F. Hushbeck, Kevin T. Berscheidt, Rick D. Jacobi | 1993-12-21 |
| 5224540 | Downhole tool apparatus with non-metallic components and methods of drilling thereof | Donald F. Hushbeck, Kevin T. Berscheidt, Rick D. Jacobi | 1993-07-06 |