Determining asphaltene onset

US11434755B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Hadrien Dumont · Paris, FR
• Thomas Pfeiffer · Kumhausen, DE
• Vinay K. Mishra · Katy, US
• German Garcia · Katy, US
• Christopher Harrison · Vashon, US
• Oliver C. Mullins · Ridgefield, US

Key dates

• Filing date: Oct 25, 2018
• Grant date: Sep 6, 2022
• Expiry date: Oct 25, 2038

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B49/0875
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods and downhole tools for operation within in a wellbore that extends into a subterranean formation. The operation includes simultaneously causing a change in a first parameter of fluid drawn into the downhole tool from the formation and determining a change in a second parameter of the fluid relative to the change in the first parameter. A third parameter of the fluid is determined based on the first and second parameter changes.