| 7234517 |
System and method for sensing load on a downhole tool |
Steven G. Streich, Roger L. Schultz, James C. Tucker, Phillip M. Starr |
2007-06-26 |
| 7048066 |
Downhole sealing tools and method of use |
Paul D. Ringgenberg, Gregory W. Vargus, Donald R. Smith, Ronald L. Hinkie, Don S. Folds |
2006-05-23 |
| 6966386 |
Downhole sealing tools and method of use |
Paul D. Ringgenberg, Gregory W. Vargus, Donald R. Smith, Ronald L. Hinkie, Don S. Folds |
2005-11-22 |
| 6666266 |
Screw-driven wellhead isolation tool |
Phillip M. Starr, Don S. Folds |
2003-12-23 |
| 6491116 |
Frac plug with caged ball |
Kevin T. Berscheidt, Donald R. Smith, Don S. Folds, Gregory W. Vargus |
2002-12-10 |
| 6481497 |
High temperature high pressure retrievable packer with barrel slip |
Loren Swor, Donald W. Winslow, Kenneth G. Neal, Phillip M. Starr |
2002-11-19 |
| 6394180 |
Frac plug with caged ball |
Kevin T. Berscheidt, Donald R. Smith, Don S. Folds, Gregory W. Vargus |
2002-05-28 |
| 6378606 |
High temperature high pressure retrievable packer with barrel slip |
Loren Swor, Donald W. Winslow, Kenneth G. Neal, Phillip M. Starr |
2002-04-30 |
| 6318460 |
Retrievable high pressure, high temperature packer apparatus with anti-extrusion system and method |
Loren Swor, Donald W. Winslow |
2001-11-20 |
| 6102117 |
Retrievable high pressure, high temperature packer apparatus with anti-extrusion system |
Loren Swor, Donald W. Winslow |
2000-08-15 |
| 5400855 |
Casing inflation packer |
Eugene E. Baker, Richard L. Giroux, John T. Brandell |
1995-03-28 |
| 5394941 |
Fracture oriented completion tool system |
James J. Venditto, David D. Szarka |
1995-03-07 |
| 5381862 |
Coiled tubing operated full opening completion tool system |
David D. Szarka |
1995-01-17 |
| 5348089 |
Method and apparatus for the multiple stage cementing of a casing string in a well |
John T. Brandell, Alan B. Duell |
1994-09-20 |
| 5314015 |
Stage cementer and inflation packer apparatus |
Steven G. Streich, John T. Brandell, Richard L. Giroux |
1994-05-24 |
| 5109925 |
Multiple stage inflation packer with secondary opening rupture disc |
Richard L. Giroux, Joseph B. Crump, Jerome F. Borges |
1992-05-05 |
| 4712619 |
Poppet valve |
Richard L. Giroux |
1987-12-15 |
| 4683955 |
Automatic fill-up floating apparatus |
Morris G. Baldridge, Harold O. Treece |
1987-08-04 |
| 4664188 |
Retrievable well packer |
Gary D. Zunkel, Michael L. Bolin |
1987-05-12 |
| 4606408 |
Method and apparatus for gravel-packing a well |
Gary D. Zunkel, David D. Szarka |
1986-08-19 |
| 4583593 |
Hydraulically activated liner setting device |
Gary D. Zunkel |
1986-04-22 |
| 4418754 |
Method and apparatus for gravel packing a zone in a well |
— |
1983-12-06 |