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. 25, 2004
Filed:
Oct. 15, 2002
Applicant:
Inventors:
Hitoshi Tashiro, Kamakura, JP;
Jahir Pabon, Brookfield, CT (US);
Frank Morris, Missouri City, TX (US);
Hitoshi Sugiyama, Sagamihara, JP;
David Hoyle, Slependen, NO;
David Leslie, Girton, GB;
Kazumasa Kato, Yokohama, JP;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/40 ;
U.S. Cl.
CPC ...
G01V 1/40 ;
Abstract
A sleeve for an acoustic logging tool has a structure with a window section having fewer bars than a conventional sleeve separated by a slotted region with thin circumferential slots which are stress-relieved at the ends (“dumb-bell” shaped). Steel receiver mounts are provided for hydrophone pressure sensors and this, together with the axially oriented hydrophones makes the tool less susceptible to interfering vibration.