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:
Sep. 18, 1984
Filed:
Apr. 06, 1983
Applicant:
Inventor:
Nick A Schuster, Houston, TX (US);
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ; G01V / ;
U.S. Cl.
CPC ...
324339 ; 73152 ; 324323 ;
Abstract
A sonde for induction logging of boreholes comprises a zero mutual inductance transmitter-receiver coil array comprising at least two coil groups that are time or frequency multiplexed. Each group comprises a coil array which is asymmetric and the coil array of one group are the mirror image of the coil array of the other group. The response of the sonde is obtained by combining the responses detected in several groups of receivers at different depths. Combination sondes, including those capable of performing both induction and sonic logging may be constructed.