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US 10,294,764 B2Granted
Methods and compositions for use in oil and/or gas wells
AssigneeFlotek Chemistry, LLC
InventorsLakia M. Champagne, James Silas, Gianna Pietrangeli, Daniel Collier Shedd
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Abstract
Methods and compositions (e.g., comprising an emulsion or a microemulsion) for use in various aspects of the life cycle of an oil and/or gas well are provided. In some embodiments, an emulsion or the microemulsion comprises water, a solvent, and a surfactant, and optionally, one or more additives, such as a co-surfactant or a linker. In some embodiments, a concentrate is provided which may be used to form an emulsion or microemulsion.
Claims31
A method of treating a well having a wellbore, comprising:
- injecting a thermodynamically unstable emulsion into the wellbore, wherein the emulsion comprises:
- a concentrate comprising:
- a first type of surfactant;
- a second type of surfactant, wherein the second type of surfactant is selected from the group consisting of polyamines, polyimines, polyesters, and resins;
- a first type of solvent comprising a terpene;
- and
- a dilution fluid comprising a second type of solvent and an acid.
4 more elements
A method of treating a well having a wellbore, comprising:
- injecting a thermodynamically unstable emulsion into the wellbore, wherein the emulsion comprises:
- a concentrate comprising:
- a first type of surfactant
- a second type of surfactant, wherein the second type of surfactant is selected from the group consisting of polyamines, polyimines, polyesters, and resins;
- and
- a first type of solvent selected from the group consisting of methyl esters of plant-derived fatty acids, de-aromatized aliphatic hydrocarbon solvents, di-butyl ether, di-hexyl ether, and glutaric acid, 2-methyl-, dimethyl ester;
- and
- a dilution fluid comprising a second type of solvent and an acid.
5 more elements
Dependencies are inferred from the claim text.