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:
May. 20, 2014
Filed:
Jun. 24, 2010
Truls Fallet, Oslo, NO;
Per Schjølberg-henriksen, Oslo, NO;
Truls Fallet, Oslo, NO;
Per Schjølberg-Henriksen, Oslo, NO;
Sinvent AS, Trondheim, NO;
Abstract
The present invention concerns a dynamic pressure sensor unit (A) for a logging tool for hydrocarbon wells with a piezoelectric element () in a sensor sleeve (). The piezoelectric element () is a tubular element with an inner and an outer diameter. The sensor sleeve () has an inner cylindrical area with an inner diameter greater than the outer diameter of the tubular piezoelectric element (). The piezoelectric element is situated in the inner cylindrical area of the sensor sleeve (). A gap () with a gap thickness is formed between the inner cylindrical area of the sensor sleeve (), defining an annular volume. The gap is filled with a noise transmitting liquid.