| Patent Number |
Title Of Patent |
Date Issued |
| 7404441 |
Hydraulic feature initiation and propagation control in unconsolidated and weakly cemented sedim |
July 29, 2008 |
| A method and apparatus for initiating and propagating a vertical hydraulic fracture in unconsolidated and weakly cemented sediments from a single bore hole to control the fracture initiation plane and propagation of the hydraulic fracture, enabling greater yield and recovery of petroleum |
| 6991037 |
Multiple azimuth control of vertical hydraulic fractures in unconsolidated and weakly cemented s |
January 31, 2006 |
| A method and apparatus for initiating multiple azimuth controlled vertical hydraulic fractures in unconsolidated and weakly cemented sediments from a single bore hole to control the fracture initiation and propagation of hydraulic fractures at differing azimuths, enabling greater yield a |
| 6792720 |
Seismic base isolation by electro-osmosis during an earthquake event |
September 21, 2004 |
| A method and system of isolating a structure and soil mass from earthquake induced vibration by inducing soil liquefaction beneath a structure during an earthquake event, by monitoring local seismic precursor events, such as early arrival ground motion using an accelerometer, predicting |
| 6615653 |
In situ method for determining soil liquefaction tendency and its prevention by electro-osmosis |
September 9, 2003 |
| A method for determining the liquefaction tendency of a water saturated soil is provided in which a driven or self boring probe with a plurality of expanding and contracting bladders imposes a cyclic shear stress reversal on a body of soil in situ, and from the measurement of pore water |
