FIELD: oil and gas.
SUBSTANCE: invention can be used for determination of paraffines and asphaltenes in oil. The substance of the invention is as follows: three samples of raw oil are taken, two samples are dissolved in a solvent and asphaltenes are extracted from one of the samples treated by the solvent. For all the three samples free induction decay curves are measured by the nuclear magnetic resonance method and ratio of hydrogenous solid-state fractions weighed in oil and hydrogenous liquid fractions is determined. The content of paraffines is evaluated by the content of hydrogenous solid-state fractions in the sample treated by the solvent with asphaltenes extracted; the concentration of asphaltenes is evaluated by the content of hydrogenous solid-state fractions in the other sample treated by the solvent taking into account concentration of paraffines determined; paraffines and asphaltenes content in initial oil is evaluated by paraffines and asphaltenes ratio determined in hydrogenous solid-state fractions.
EFFECT: simple and effective method of determination of paraffines and asphaltenes concentrations in oil, which can be used both in laboratory conditions and directly in the well in the real time mode.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DETERMINING THE GROUP COMPOSITION OF BITUMEN IN ROCK USING LOW-FREQUENCY NMR RELAXOMETRY | 2022 |
|
RU2796819C1 |
| METHOD FOR DETERMINING GROUP COMPOSITION OF OIL PRODUCTS USING NMR RELAXOMETRY | 2023 |
|
RU2813455C1 |
| METHOD FOR DETERMINING GROUP COMPOSITION OF OIL PRODUCTS USING NMR RELAXOMETRY | 2023 |
|
RU2813458C1 |
| METHOD OF DETERMINING CONTENT OF LIQUID-PHASE AND SOLID-STATE COMPONENTS IN HYDROCARBON MIXTURE | 2008 |
|
RU2383884C1 |
| METHOD FOR NON-DESTRUCTIVE CONTROL OF PARAFFIN CONCENTRATION IN OIL FLOW BASED ON RADIOISOTOPIC RADIATION | 2020 |
|
RU2744315C1 |
| METHOD FOR SIMULTANEOUS DETERMINATION OF AMOUNT OF WATER AND GROUP COMPOSITION OF WATER-OIL EMULSIONS USING NMR RELAXOMETRY | 2024 |
|
RU2822865C1 |
| METHOD OF DETERMINING CONTENT OF PARAFFIN IN OIL, OIL PRODUCTS AND OIL-CONTAINING SEDIMENTS | 2018 |
|
RU2691958C1 |
| METHOD FOR DETERMINATION OF RESINOUS SUBSTANCES IN OIL, OIL PRODUCTS AND ASPHALT-RESIN-PARAFFIN DEPOSITS | 2022 |
|
RU2799314C1 |
| METHOD FOR DETERMINING THE CONTENT OF ASPHALTENES IN PETROLEUM PRODUCTS AND ASPHALTENE-RESIN-PARAFFIN DEPOSITS | 2021 |
|
RU2780759C1 |
| METHOD FOR DETERMINING ASPHALTENES CONTENT IN OIL AND ITS REFINING PRODUCTS | 2021 |
|
RU2777764C1 |
