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:
Mar. 27, 1984
Filed:
Jun. 08, 1981
Applicant:
Inventor:
Paul L Sinclair, Houston, TX (US);
Assignee:
Schlumberger Technical Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364422 ; 364573 ; 364571 ; 324339 ;
Abstract
A method and apparatus for autocalibrating the transfer function of a digital induction logging tool is disclosed. A plurality of test calibration signals of differing amplitudes are generated and periodically substituted for the normal formation signals. An expression for the transfer function of the tool using standard circuit analysis is obtained for the tool. From the tool output measurements taken for the various test calibration inputs, a linearization correction function is obtained for the tool transfer function as the tool is being used in normal logging operations.