| 6062307 |
Screen assemblies and methods of securing screens |
Syed Hamid, Gregory B. Chitwood, Patrick W. Rice |
2000-05-16 |
| 5535767 |
Remotely actuated adjustable choke valve and method for using same |
Mark A. Schnatzmeyer |
1996-07-16 |
| 5188182 |
System containing expendible isolation valve with frangible sealing member, seat arrangement and method for use |
Ralph H. Echols, Daniel Luther Patterson |
1993-02-23 |
| 5163515 |
Pumpdown toolstring operations in horizontal or high-deviation oil or gas wells |
Roger Tailby, John H. Yonker, Marion D. Kilgore, Ronald K. Churchman, Jack Gammill Clemens |
1992-11-17 |
| 5067657 |
Burner nozzle |
Timothy M. Young, Charles Don Coppedge, Charles S. McCasland |
1991-11-26 |
| 4730677 |
Method and system for maintenance and servicing of subsea wells |
Phillip S. Sizer, John C. Gano, John H. Yonker, Robert L. Thurman, James O'Sullivan +4 more |
1988-03-15 |
| 4574883 |
Well tool stopping devices, systems and methods |
Albert W. Carroll |
1986-03-11 |
| 4465132 |
Releasable well tool stopping devices and systems |
Albert W. Carroll |
1984-08-14 |
| 4273186 |
Well safety valve system |
John H. Yonker, Thomas M. Deaton |
1981-06-16 |
| 4258794 |
Underwater completion habitat |
Phillip S. Sizer, Sanford R. Dowden |
1981-03-31 |
| 4227573 |
Reinforced seal unit for pumpdown pistons or well swabs |
Thomas W. Ray, Donald F. Taylor, John H. Yonker |
1980-10-14 |