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US 2022/0089937 A1Published application
Polyoxopolyamine desorbents for enhanced oil recovery
AssigneesRhodia Operations, Ifp Energies Nouvelles
InventorsMikel Morvan, Max Chabert, Sayak Roy
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Abstract
The instant invention concerns the use of a compound of formula R1R2N—(CH2)m−NR3—(CH2)m′−NR4R5 wherein each of m and m′ is 1, 2, 3 or 4; and each of R1, R2, R3, R4 and R5 is a group of formula —[O—CH2—CH(—CH3)—]n—[O—CH2—CH2]p—OH, wherein n is from 2 to 30; and p is from 5 to 50 for decreasing or inhibiting the anionic-surfactant retention phenomena in an oil reservoir.
Claims20
A method comprising injecting at least one compound having the formula (I) below:
- R1R2N—(CH2)m—NR3—(CH2)m′—NR4R5 Formula (I)
- wherein:
- each of m and m′ is 1, 2, 3 or 4;
- and
- each of R1, R2, R3, R4 and R5, identical or different, is a group of formula —[O—CH2—CH(—CH3)—]n—[O—CH2—CH2—]p—OH, wherein n is from 2 to 30;
- and p is from 5 to 50
- into an oil reservoir.
4 more elements
Dependencies are inferred from the claim text.