Apparatus and method for measuring concentrations of scale-forming ions
US7767461B2 · kind B2 · utility
2Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2004 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to methods and apparatus for determination of ion concentrations, particularly in downhole water from hydrocarbon wells, aquifers etc. It is useful in a wide range of applications, including predicting the formation of scale and fingerprinting waters from different sources. More particularly, the invention relates to the use of ligands whose electronic configuration is altered by the binding of the scaling ions within a water sample. These alterations are detected, for example by electrochemical means, and are indicative of the concentration of scaling ions in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.