Surfactant selection methods for wetting alteration in subterranean formations
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United States of America Patent
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Sep 8, 2020
Grant Date -
Oct 12, 2017
app pub date -
Nov 13, 2014
filing date -
Nov 13, 2014
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Abstract
Systems and methods for selecting surfactants for use in subterranean formations are provided. In one embodiment, the methods comprise: providing a sample of oil from at least a portion of a subterranean formation; measuring at least one of the total acid number (TAN) and the total base number (TBN) of the oil sample; and selecting a set of surfactants to evaluate for a treatment in at least a portion of the subterranean formation based on at least one of the TAN and the TBN of the oil sample, the set of surfactants selected from the group consisting of: a set of cationic surfactants, a set of anionic surfactants, and a set of zwitterionic surfactants.
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