Optical fluid analysis signal refinement

US6992768B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Chengli Dong · Sugar Land, US
• Peter S. Hegeman · Missouri City, US
• Oliver C. Mullins · Ridgefield, US
• Kai Hsu · Sugar Land, US
• Andrew Kurkjian · Sugar Land, US
• Andrew Carnegie · Kuala Lumpur, MY

Key dates

• Filing date: May 22, 2003
• Grant date: Jan 31, 2006
• Expiry date: Apr 5, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/3129
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for refining fluid sample data includes obtaining optical density data for a fluid sample in at least two color channels and at least one fluid component channel and determining a color-absorption function from the optical density data for the fluid sample in the at least two color channels. The method also includes calculating a portion of the optical density caused by color absorptions in each of the at least one fluid component channels, and de-coloring the optical density data in each of the at least one fluid component channels by removing the portion of the optical density data caused by color absorption.