George J. Hirasaki
11Patents
4h-index
28Co-inventors
60Inventor score
Filing activity: May 27, 1977 → Mar 24, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4086964A | Steam-channel-expanding steam foam drive | Fixed Constructions | 41 | Expired |
| US4597442A | Reservoir preflushing process for increasing the rate of surfactant transport in displacing oil with injected steam and steam-foaming surfactant | Fixed Constructions | 12 | Expired |
| US9377449B2 | Nanocomposite oil sensors for downhole hydrocarbon detection | Chemistry; Metallurgy | 5 | Active |
| US4570711A | Process for optimizing the noncondensible gas content of an oil-displacing steam-foam-forming mixture | Fixed Constructions | 4 | Expired |
| US8911615B2 | Recovery and separation of crude oil and water from emulsions | Chemistry; Metallurgy | 3 | Active |
| US11099292B1 | Method for determining the composition of natural gas liquids, mean pore-size and tortuosity in a subsurface formation using NMR | Physics | 3 | Active |
| US6695055B2 | Subterranean formation water permeability reducing methods | Chemistry; Metallurgy | 2 | Expired |
| US11933932B1 | Method of estimating permeability using NMR diffusion measurements | Physics | 1 | Active |
| US11921069B1 | Determination of fluid-phase-specific petrophysical properties of geological core for oil, water and gas phases | Physics | 1 | Active |
| US12228531B1 | Method of determining solid and liquid components in sedimentary rocks using NMR relaxation | Physics | 0 | Active |
| US9856412B2 | Ultra-low-tension compositions and their use in enhanced oil recovery | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.