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:
Jan. 26, 1999
Filed:
Aug. 29, 1997
Applicant:
Inventors:
Christian Wittrisch, Rueil Malmaison, FR;
Jean-Paul Deflandre, Ermont, FR;
Assignee:
Institut Francais du Petrole, Cedex, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
181102 ; 3408562 ; 367 25 ; 166206 ;
Abstract
A device for coupling a receiver system with the wall of a well (1) bored in the ground comprises at least one sensor (11;12) sensitive to vibrations, structure (14,15) for applying the system against the wall of said well at the two ends of the system. A surface for supporting the system against the wall, arranged between the applying structure, has a radius of curvature essentially identical to the radius of curvature of a transverse section of the well so that this contact surface (MN) between said system and the wall follows a portion of a cylinder contained within an arc equal to at least 90.degree..