| 5852587 |
Method of and apparatus for sonic logging while drilling a borehole traversing an earth formation |
Shu-Kong Chang, Gordon McDaniel, Thomas J. Plona, Curtis Randall |
1998-12-22 |
| 5796677 |
Method of sonic logging while drilling a borehole traversing an earth formation |
Shu-Kong Chang, Gordon McDaniel, Thomas J. Plona, Curtis Randall, Jean Pierre Masson +2 more |
1998-08-18 |
| 5646379 |
Attentuator for borehole acoustic waves |
Chuar-Jian Hsu, David Johnson, Abderrhamane Ounadjela |
1997-07-08 |
| 5521882 |
Measurement of formation characteristics using acoustic borehole tool having sources of different frequencies |
Ralph M. D'Angelo, Christopher Kimball, Thomas J. Plona, Kenneth W. Winkler |
1996-05-28 |
| 5485431 |
Measurement of nonlinear formation parameters using sonic borehole tool |
David Johnson, Andrew Norris |
1996-01-16 |
| 5475650 |
Measurement of nonlinear properties of formation using sonic borehole tool while changing pressure in borehole |
Bikash K. Sinha |
1995-12-12 |
| 5398215 |
Identification of stress induced anisotropy in formations |
Bikash K. Sinha |
1995-03-14 |
| 5309404 |
Receiver apparatus for use in logging while drilling |
Thomas J. Plona, Shu-Kong Chang |
1994-05-03 |
