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:
Aug. 31, 1999
Filed:
Jul. 01, 1997
Applicant:
Inventor:
Louis Soulier, Fontaine, FR;
Assignee:
Geoservices, , FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
3408546 ; 3408545 ; 3408544 ; 3408549 ; 3408551 ; 175 40 ;
Abstract
A device and method for transmitting information between a well bottom and the surface by means of electromagnetic waves. The device includes transmitting information on either side of a valve (9) placed in a string of pipes (4) in a well by means of two electromagnetic wave transmitter-receiver unit (1, 2) placed on either side of the valve. In the device, unit (2) placed above valve (9) is lowered by means of logging type cable (3) into inner space of pipes (4).