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:
Dec. 04, 1990
Filed:
Nov. 21, 1989
Gary Lucas, Ely, GB;
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
The logging tool comprises a gas void fraction measurement section (37) consisting of a first set (37) of eight longitudinal electrodes (38) extending parallel to the longitudinal axis of the tool and positioned and regularly spaced around said longitudinal axis, a sleeve (40) made of dielectric material and located in contact and around the electrodes for obtaining an electric field pattern distributed essentially radially between the electrodes and the wall (12) of the borehole facing the electrodes (38), a centralizer (32) for substantially centralizing the tool in the borehole, and a circuit means (69-115) for measuring sequentially the capacitance between two adjacent electrodes for each pair of electrodes, said capacitance being characteristic of the gas void fraction of the fluid flowing in the wellbore. The logging tool comprises in addition a cross correlation gas velocity measurement section (28) which includes a second (48) and a third (50) set of electrodes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile