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. 07, 2021
Filed:
Mar. 21, 2017
Schlumberger Technology Corporation, Sugar Land, TX (US);
Bassem Khadhraoui, Marseilles, FR;
Saad Kisra, Abingdon, GB;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method for estimating sonic slowness comprising: obtaining () a plurality of sonic waveforms are received by a plurality of receivers of a logging tool after emission of a source sonic wave by a transmitter, obtaining () slowness models of the subterranean formation, a slowness model being defined by a at least one cell of constant slowness for at least one wave energy mode, computing (), for each slowness model, a set of candidate travel times, a candidate travel time of a set of candidate travel times being computed for a wave energy mode and a position of a receiver of the plurality of receivers, computing () a relevance indicator for each set of candidate travel times based on the recorded sonic waveforms; searching () a match between the sets of candidate travel times and the recorded sonic waveforms by searching a relevance indicator which is optimum, computing () a sonic slowness estimate for the subterranean formation from a set of candidate travel times for which the relevance indicator is optimum.