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US 9,422,470 B2Granted
Method for selection of surfactants in well stimulation
AssigneeMulti-Chem Group, LLC
InventorsLiang Xu, Qiang Fu
Life of this patent
Estimating the term…
Abstract
A method of determining the suitability of a surfactant for use in a formation can include sampling water in the formation, providing at least two surfactants, and mixing each of the surfactants with the formation water to form surfactant/water samples. The method can further include determining the solubility of each surfactant with the formation water, comparing the solubility of each surfactant with the other surfactant, and assigning a solubility performance value for each surfactant based on its solubility in the formation water sample compared to the other surfactant.
Claims12
A method comprising:
- sampling water in a subterranean formation;
- providing at least two surfactants;
- mixing each of the surfactants with the formation water to form surfactant/water samples;
- determining a solubility of each surfactant in the formation water;
- comparing the solubility of each surfactant with the solubility of each other surfactant;
- assigning a solubility performance value for each surfactant based, at least in part, on its solubility in the formation water sample compared to the solubility of each other surfactant;
- assigning a performance index to each surfactant based, at least in part, on its solubility performance value;
- and
- determining whether each surfactant is suitable for use in the formation based, at least in part, on its performance index.
6 more elements
Dependencies are inferred from the claim text.