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:
Nov. 16, 1976
Filed:
Jan. 08, 1975
Pierre C Escaron, Houston, TX (US);
Schlumberger Technology Corporation, New York, NY (US);
Abstract
In the representative embodiment of the new and improved apparatus disclosed herein for positioning acoustic well-logging tools, outwardly-bowed elongated spring members of a wear-resistant metal are cooperatively spaced around the body of an acoustic-logging tool and arranged as required for maintaining the tool substantially centered within a well bore. To at least minimize or significantly attenuate the acoustic noise inherently generated by the rubbing of the outward faces of the spring members along the well bore walls which noise may otherwise unduly interfere with the reception of the acoustic logging signals, the inward faces of at least the mid portions of the several spring members are respectively covered with a composite material including an elastomer containing a substantial number of small embedded particles or interspersed balls of a sound-absorbing material such as lead.