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. 10, 2009
Filed:
Feb. 16, 2006
Andrei I. Davydychev, Sugar Land, TX (US);
John F. Hunka, Sugar Land, TX (US);
Thomas D. Barber, Houston, TX (US);
Scott S. Chesser, Richmond, TX (US);
Bulent Finci, Sugar Land, TX (US);
Jingjing (Karen) Sun, Missouri City, TX (US);
William B. Vandermeer, Houston, TX (US);
Richard D. Ward, LaPorte, TX (US);
Andrei I. Davydychev, Sugar Land, TX (US);
John F. Hunka, Sugar Land, TX (US);
Thomas D. Barber, Houston, TX (US);
Scott S. Chesser, Richmond, TX (US);
Bulent Finci, Sugar Land, TX (US);
Jingjing (Karen) Sun, Missouri City, TX (US);
William B. Vandermeer, Houston, TX (US);
Richard D. Ward, LaPorte, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An electromagnetic logging that includes a support; and at least one four-coil array disposed on the support, wherein the at least one four-coil array comprises: a transmitter, a bucking coil, a receiver, and a trim coil. A method for balancing an induction array includes applying an alternating current to a transmitter of the induction array that comprises the transmitter, a bucking coil and a receiver; measuring a mutual coupling between the transmitter and the receiver; and adding an extra bucking coil, if the mutual coupling exceeds a selected criterion.