Measurements of the Relationship Between Microstructure, pH, and the Streaming and Zeta Potentials of Sandstones.

ABSTRACT: A large number (1253) of high-quality streaming potential coefficient ( Csp) measurements have been carried out on Berea, Boise, Fontainebleau, and Lochaline sandstones (the latter two including both detrital and authigenic overgrowth forms), as a function of pore fluid salinity ( Cf) and rock microstructure. All samples were saturated with fully equilibrated aqueous solutions of NaCl (10 -5 and 4.5 mol/dm 3) upon which accurate measurements of their electrical conductivity and pH were taken. These Csp measurements represent about a fivefold increase in streaming potential data available in the literature, are consistent with the pre-existing 266 measurements, and have lower experimental uncertainties. The Csp measurements follow a pH-sensitive power law behaviour with respect to Cf at med

SUBMITTER: Walker E 

PROVIDER: S-EPMC6954024 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature