Issued Patents All Time
Showing 51–75 of 86 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7334650 | Apparatus and methods for drilling a wellbore using casing | Gregory G. Galloway, Tuong Thanh Le, Raymond H. Jackson, Gregory R. Nazzal, James C. Swarr +8 more | 2008-02-26 |
| 7325610 | Methods and apparatus for handling and drilling with tubulars or casing | David Shahin, Adrian Vuyk, Jr., Gary Thompson, Kevin L. Gray, John Timothy Allen +1 more | 2008-02-05 |
| 7311148 | Methods and apparatus for wellbore construction and completion | Gregory G. Galloway, David J. Brunnert, Patrick Maguire, Tuong Thanh Le, Albert C. Odell, II +5 more | 2007-12-25 |
| 7270181 | Downhole surge pressure reduction and filtering apparatus | Clayton Stanley Pluchek, Gerald Pedersen, Thad Scott, David M. Haugen | 2007-09-18 |
| 7128154 | Single-direction cementing plug | David J. Brunnert, Gregory G. Galloway, John Christopher Jordan | 2006-10-31 |
| 6978841 | Sand removal and device retrieval tool | Corey Hoffman, Mike A. Luke, Stephen J. Norris | 2005-12-27 |
| 6966375 | Downhole surge pressure reduction and filtering apparatus | Clayton Stanley Pluchek, Gerald Pedersen, Thad Scott, David M. Haugen | 2005-11-22 |
| 6834726 | Method and apparatus to reduce downhole surge pressure using hydrostatic valve | David M. Haugen, David Hosie | 2004-12-28 |
| 6755252 | Downhole surge pressure reduction and filtering apparatus | Clayton Stanley Pluchek, Gerald Pedersen, Thad Scott, David M. Haugen | 2004-06-29 |
| 6719056 | Sand removal method | Corey Hoffman, Mike A. Luke, Stephen J. Norris | 2004-04-13 |
| 6695057 | Fracturing port collar for wellbore pack-off system, and method for using same | Gary Duron Ingram, Corey Hoffman | 2004-02-24 |
| 6640904 | Sand removal and device retrieval tool | Corey Hoffman, Mike A. Luke, Stephen J. Norris | 2003-11-04 |
| 6571869 | Downhole surge pressure reduction and filtering apparatus | Clayton Stanley Pluchek, Gerald Pedersen, Thad Scott, David M. Haugen | 2003-06-03 |
| 6427776 | Sand removal and device retrieval tool | Corey Hoffman, Mike A. Luke, Stephen J. Norris | 2002-08-06 |
| 6405803 | Differential flow control valve | Corey Hoffman | 2002-06-18 |
| 6095247 | Apparatus and method for opening perforations in a well casing | Steven G. Streich, Mike Navarette, Jimmie D. Weaver, David D. Szarka | 2000-08-01 |
| 6082451 | Wellbore shoe joints and cementing systems | Peter Budde, Erik P. Eriksen, Frederick T. Tilton | 2000-07-04 |
| 6056053 | Cementing systems for wellbores | Peter Budde | 2000-05-02 |
| 5909771 | Wellbore valve | Peter Budde | 1999-06-08 |
| 5813457 | Wellbore cementing system | Peter Budde | 1998-09-29 |
| 5787979 | Wellbore cementing system | Peter Budde | 1998-08-04 |
| 5680902 | Wellbore valve | Peter Budde | 1997-10-28 |
| 5553667 | Cementing system | Peter Budde | 1996-09-10 |
| 5400855 | Casing inflation packer | Lee W. Stepp, Eugene E. Baker, John T. Brandell | 1995-03-28 |
| 5325923 | Well completions with expandable casing portions | Jim B. Surjaatmadja, Timothy W. Helton | 1994-07-05 |