| 5307268 |
Method for using P-S converted waves as a subsalt imaging tool |
David W. Bell, Stephen John Hill, Gregory L. Loumos |
1994-04-26 |
| 5265068 |
Efficient generation of traveltime tables for complex velocity models for depth migration |
Douglas W. Hanson |
1993-11-23 |
| 5229938 |
Method for migrating seismic data by using ray tracing in determining two way travel times |
John B. Sinton, Douglas W. Hanson |
1993-07-20 |
| 5229940 |
Method of extracting three dimensional information from a grid of two dimensional seismic data |
David W. Bell |
1993-07-20 |
| 5189643 |
Method of accurate fault location using common reflection point gathers |
David W. Bell |
1993-02-23 |
| 5157637 |
Method of structural traveltime tomography |
— |
1992-10-20 |
| 5157638 |
Method of deriving statics corrections from common reflection point gathers |
Gregory L. Loumos, Thomas R. Stoeckley |
1992-10-20 |
| 5153857 |
Method for selecting seismic traces for higher efficiency of pre-stack two dimensional or three dimensional depth migration |
— |
1992-10-06 |
| 5128899 |
Method for sharpening prestack depth migration images by removing residual moveout from common image point gathers before stacking |
Mark Boyd, James Morton Tippett, Douglas W. Hanson |
1992-07-07 |
| 5089994 |
Tomographic estimation of seismic transmission velocities from constant offset depth migrations |
Wiliam S. Harlan, Douglas W. Hanson |
1992-02-18 |
| 5084844 |
Efficient method for storing seismic traces on disk |
— |
1992-01-28 |
| 5067113 |
Efficient generation of traveltime tables for two dimensional and three dimensional prestack depth migration |
Douglas W. Hanson, William S. Harlan |
1991-11-19 |
| 5062086 |
Calculation of raypaths and wavepaths from traveltime tables for the tomographic estimation of transmission velocities |
William S. Harlan, Douglas W. Hanson |
1991-10-29 |
| 5050131 |
Quantitative method for evaluating velocity model quality |
Douglas W. Hanson, Thomas D. Cavanaugh |
1991-09-17 |
| 4992996 |
Interval velocity analysis and depth migration using common reflection point gathers |
Doublas W. Hanson, Thomas D. Cavanaugh |
1991-02-12 |
| 4980866 |
Common offset depth migration with residual moveout correction |
Thomas D. Cavanaugh, Douglas W. Hanson |
1990-12-25 |
| 4964089 |
Method for derivation of internal velocities from post-migration parts |
Douglas W. Hanson, Thomas D. Cavanaugh |
1990-10-16 |
| 4964097 |
Three dimensional image construction using a grid of two dimensional depth sections |
Douglas W. Hanson, Thomas D. Cavanaugh |
1990-10-16 |
| 4918670 |
Method for interval velocity analysis and determination of reflector position from before stack seismic data |
— |
1990-04-17 |