| 5693891 |
Flowmeter for measuring the flow rate of a two phase fluid in a pipe |
Andrew E. Brown |
1997-12-02 |
| 4639596 |
Petroleum reservoir flooding method |
Harley L. Tanner, III |
1987-01-27 |
| 4597441 |
Recovery of oil by in situ hydrogenation |
Charles H. Ware, Leslie C. Rose |
1986-07-01 |
| 4450913 |
Superheated solvent method for recovering viscous petroleum |
Robert E. Gillespie, David B. Burnett |
1984-05-29 |
| 4434849 |
Method and apparatus for recovering high viscosity oils |
— |
1984-03-06 |
| 4410216 |
Method for recovering high viscosity oils |
— |
1983-10-18 |
| 4277580 |
Terpolymer of N-vinyl pyrrolidone in alkoxylated form |
Jack F. Tate |
1981-07-07 |
| 4257650 |
Method for recovering subsurface earth substances |
— |
1981-03-24 |
| 4249607 |
Miscible displacement oil recovery method |
— |
1981-02-10 |
| 4237017 |
Steam flooding hydrocarbon recovery composition |
John W. Porter |
1980-12-02 |
| 4233166 |
Composition for recovering hydrocarbons |
— |
1980-11-11 |
| 4219429 |
Composition and process for stimulating well production |
Jack F. Tate |
1980-08-26 |
| 4210205 |
Secondary recovery process |
Jack F. Tate |
1980-07-01 |
| 4203853 |
Fluid for recovering hydrocarbons |
— |
1980-05-20 |
| 4186800 |
Process for recovering hydrocarbons |
— |
1980-02-05 |
