Patent ID: 11879330
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 14:
15. A method, comprising:
allowing an ion exchange between an ion selective substrate and a sample;
optically interacting the ion selective substrate with a source light provided by an optical source, to generate a modified light, wherein optically interacting the ion selective substrate with the source light comprises optically interacting the ion selective substrate with an optical element to generate the modified light;
detecting a change in an optical response of the ion selective substrate based on the modified light;
determining a property of the sample from the change in the optical response of the ion selective substrate;
determining a fluid property of the sample from the determined property of the sample and a fluid model; and
modifying an operational parameter in a wellbore for oil and gas exploration or extraction according to an ion concentration of the sample; and
wherein the ion selective substrate comprises a membrane, the membrane configured to change an optical property in a selected wavelength range, according to the property of the sample, wherein the membrane comprises multiple materials each having different cutoff concentrations.