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. 14, 2007
Filed:
Sep. 09, 2002
Chaur-jian Hsu, Danbury, CT (US);
Jahir A. Pabon, Brookfield, CT (US);
Bikash K. Sinha, West Redding, CT (US);
Sergey Asvadurov, Moscow, RU;
Chaur-Jian Hsu, Danbury, CT (US);
Jahir A. Pabon, Brookfield, CT (US);
Bikash K. Sinha, West Redding, CT (US);
Sergey Asvadurov, Moscow, RU;
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveform received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing.