| Patent application number | Description | Published |
|---|
| 20100085047 | METHOD FOR DETECTING PARAFFIN WAX AND ASPHALTENE CONTENT IN OIL - This invention relates to geology, geochemistry, oil refinery and petroleum chemistry and can be implemented for determination of paraffin and asphaltene concentration in oil, in particular, for analysis of heavy oils and bitumens. To determine concentration of paraffins and asphaltenes in oil, three crude oil samples are extracted; two extracted samples are dissolved in a solvent and the solvent alongside with light oil fractions is then removed; meanwhile, asphaltenes are removed from one of the solvent-treated samples. A nucleic magnetic resonance method is employed for measuring free inductance drop-down curves for all three samples; thereafter, a ratio of solid hydrogen-containing fractions suspended in oil, to liquid hydrogen-containing fractions is defined. The paraffin concentration is judged by the content of solid hydrogen-containing fractions in the solvent-treated sample, from which asphaltenes have been removed. The asphaltene concentration is judged by the content of solid hydrogen-containing fractions in the other solvent-treated sample, with the consideration of the defined concentration of paraffins. The concentration of paraffins and asphaltenes in original oil is determined based on the defined paraffin-to-asphaltene ratio in solid hydrogen-containing fractions. | 04-08-2010 |
| 20100156409 | METHOD FOR DETERMINING THE CONTENT OF LIQUID AND SOLID PHASE COMPONENTS IN HYDROCARBON MIXTURE - The method for a hydrocarbon mixture composition determination includes the collection of at least one sample of the hydrocarbon mixture. For this sample, a nuclear magnetic resonance method is used for measuring series of hydrocarbon mixture's free inductance decrement curves within a temperature range of −150° C. to +150°. Each free inductance decrement curve is then used to determine the solid component fraction P | 06-24-2010 |
| 20100296782 | OPTICAL FIBRE HAVING RESISTANCE TO HYDROGEN-INDUCED ATTENUATION - An optical fiber having resistance to hydrogen-induced attenuation includes a core and cladding including silica. At least one of the core and the cladding includes a dopant capable of not increasing reactivity of the silica with hydrogen. An optical fiber assembly includes a core and cladding including silica. At least one of the core and the cladding includes a dopant capable of changing the refractive index of the fiber core or cladding while not increasing reactivity of the fiber with hydrogen. The optical fiber in some examples further includes a hermetic layer disposed about the cladding. Some implementations include a “getter” layer, which may be an outside part of the fiber cladding been inside the hermetic coating. The “getter” layer includes silica and a dopant increasing reactivity of the layer with hydrogen. The optical fiber assembly optionally includes a sheath disposed about the cladding. | 11-25-2010 |
| 20110019177 | FIBER-OPTIC TRANSDUCER FOR FLUID AND/ OR GAS VELOCITY MEASUREMENT - This useful model relates to fiber-optic fluid/gas flow rate measurement transducers and is employed in gas/fluid flow measuring systems, and can be used for water or natural gas consumption monitoring, especially in measuring systems intended for fluid/gas flow monitoring in pipelines and oil/gas wells. The transducer includes optic fiber which comprises at least one Bragg's fiber lattice, wherein the said Bragg's fiber lattice is fitted with at least one concentrator of mechanical stresses which originate in the optic fiber during its interaction with the gas/fluid flow. As a result, the transducer sensitivity increases. | 01-27-2011 |
