Patent · US Active

Viscometer for downhole use

US9574437B2 · kind B2 · utility

2Cited by

25References

20Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Ansgar Cartellieri · Sulingen, DE
Stefan Sroka · Celle, DE

Key dates

Filing date	Jul 24, 2012
Grant date	Feb 21, 2017
Priority date	—
Expiry date	Jun 16, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01N11/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for measuring viscosity in a borehole includes: pumping downhole fluid through at least one tube disposed in a carrier configured to be disposed in a borehole in an earth formation; taking at least one differential pressure measurement of the fluid in the at least one tube via a pressure transducer; and estimating a viscosity of the fluid based on the differential pressure measurement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.