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:
Feb. 12, 2002
Filed:
Jun. 17, 1999
Philippe F. Salamitou, Paris, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A capacitive device for measuring the dielectric constant of a two-phase fluid flowing along a pipe, this device comprising two electrodes and power supply system for applying an AC voltage across the two electrodes. A first one of these electrodes forms an excitation electrode disposed at the periphery of a measurement electrode, and the device further comprises apparatus for maintaining the electrodes at the same potential and for measuring the current (i) flowing between the excitation electrode and the measurement electrode, and apparatus for deducing the dielectric constant from the measured current. Application to measuring flow rates of water in hydrocarbon wells, in particular in hydrocarbon wells that slope.