| Patent Number |
Title Of Patent |
Date Issued |
| 5404010 |
Method of well logging in fractured subterranean formation |
April 4, 1995 |
| In a method of logging a well in a subterranean formation which formation has been fractured by injecting proppant tagged with at least one radioactive material into the formation through the well, the improvement comprising: utilizing a spectral gamma-ray tool in performing the logging. |
| 5387737 |
Slurry injection into disaggregated earth formations |
February 7, 1995 |
| Slurries of particulate solids wastes are injected into a disaggregated earth formation through an injection well by predetermining the formation to have a compressive stress in a range of about 300 psi to 2500 psi, a porosity of at least about twenty percent (20%) and disposed between |
| 4821564 |
Method and system for determining fluid pressures in wellbores and tubular conduits |
April 18, 1989 |
| Friction pressure losses are obtained for non-Newtonian or generalized Newtonian fluids being pumped through conduits at high flow rates, such as in hydraulic fracturing of subterranean formations, by measuring friction pressure losses in a pipe viscometer under laminar flow conditions. |
| 4726219 |
Method and system for determining fluid pressures in wellbores and tubular conduits |
February 23, 1988 |
| Friction pressure losses are obtained for non-Newtonian or generalized Newtonian fluids being pumped through conduits at high flow rates, such as in hydraulic fracturing of subterranean formations, by measuring friction pressure losses in a pipe viscometer under laminar flow conditions. |
| 4152941 |
Process for measuring the fracture toughness of rock under simulated down-hole stress conditions |
May 8, 1979 |
| The present invention relates to a method for measuring the fracture toughness of rock as it would exhibit in its natural down-hole setting. Practicing the method of the present invention involves internally pressurizing a rock specimen while simultaneously exerting an increasing ext |
