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US 2022/0010197 A1Published application
Branched amino acid surfactants for oil and gas production
AssigneeAdvanSix Resins & Chemicals LLC
InventorEdward Asirvatham
Life of this patent
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Abstract
Branched surfactants for use in formulations and processes suitable for hydrocarbon recovery. These formulations, include formulations suitable for fracking, enhancing oil and or gas recovery, and the recovery and/or production of bio-based oils.
Claims16
A formulation for the recovery of hydrocarbons, comprising:
- at least one surfactant of the following formula:
- wherein R1 and R2 are independently chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5 (including 2 and 5);
- R3 is C5-C12 alkyl;
- R4 is C3-C10 alkyl;
- the terminal nitrogen is optionally further substituted with R5, wherein R5 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- an optional counterion may be associated with the compound and, if present, the counterion may be selected from the group consisting of chloride, bromide, iodide, and 4-methylbenzenesulfonate;
- and
- an aqueous phase.
6 more elements
A method of recovering a hydrocarbon comprising the steps of:
- introducing a foamed fluid composition within an oil or gas well and performing an operation with the foamed fluid composition wherein the foamed composition comprises:
- a base fluid comprises:
- an oil-based or a water-based fluid;
- a gas,
- at least one surfactant of the following formula:
- wherein R1 and R2 are independently chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5 (including 2 and 5);
- R3 is C5-C12 alkyl;
- R4 is C3-C10 alkyl;
- the terminal nitrogen is optionally further substituted with R5, wherein R5 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- an optional counterion may be associated with the compound and, if present, the counterion may be selected from the group consisting of chloride, bromide, iodide, and 4-methylbenzenesulfonate.
8 more elements
Dependencies are inferred from the claim text.