The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
Jul. 12, 2004
LI Jiang, Ridgefield, CT (US);
Timothy Gareth John Jones, Cambridge, GB;
Andrew Meredith, Cambridge, GB;
Markus Pagels, Cambridge, GB;
Amilra Prasanna DE Silva, Belfast, GB;
Li Jiang, Ridgefield, CT (US);
Timothy Gareth John Jones, Cambridge, GB;
Andrew Meredith, Cambridge, GB;
Markus Pagels, Cambridge, GB;
Amilra Prasanna De Silva, Belfast, GB;
Schlumberger Technology Corporation, Ridgefield, CT (US);
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.