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US 9,829,421 B2Granted
Apparatus and methods for determining surface wetting of material under subterranean wellbore conditions
AssigneeHalliburton Energy Services, Inc.
InventorsVenkata Gopala Rao Palla, Bhargav Gajji, Sameer Bardapurkar, Sairam K S Pindiprolu
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Abstract
Methods and apparatuses for determining surface wetting of metallic materials at downhole wellbore condition with fixed or changing well fluids are disclosed. In general, the methods according to the disclosure include carrying out an electrical impedance spectroscopy (“EIS”) for a system simulating downhole conditions for the wetting of a surface by simultaneously dynamically moving electrodes exposed to the well fluid while measuring the changes in electrical characteristics between the electrodes.
Claims10
An apparatus comprising:
- a. a container having walls forming a sealed chamber for containing a pressurized liquid;
- b. first and second electrodes with surfaces on each located in the chamber;
- c. a pivot mounted to rotate in the chamber, at least one of the first and second electrodes mounted on the pivot to rotate with the pivot and to be electrically insulated from each other;
- d. a motor connected to the pivot to rotate the pivot;
- and
- e. conductors connected to the first and second electrodes;
- f. means connected to the conductors for measuring changes in electrical impedance between the first electrode and second electrode whereby electrical impedance spectroscopy measurements can be made between the first electrode and the second electrode.
4 more elements
Dependencies are inferred from the claim text.