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:
Feb. 15, 2005
Filed:
May. 06, 2002
Gijsbert Christiaan Fehmers, Rijswijk, NL;
William Alexander Mulder, Rijswijk, NL;
Rene-edouard Andre Michel Plessix, Rijswijk, NL;
Gijsbert Christiaan Fehmers, Rijswijk, NL;
William Alexander Mulder, Rijswijk, NL;
Rene-Edouard Andre Michel Plessix, Rijswijk, NL;
Shell Oil Company, Houston, TX (US);
Abstract
Method of removing irregularities caused by tube waves from seismic data obtained in a borehole seismic survey, using a set of seismic or sources and a set of seismic receivers each arranged in a borehole, in which seismic data is time shifted based on an estimated tube wave velocity, filtered and then the time shift is reversed and applied to the original data set resulting in a corrected set, which is again time shifted opposite to the original time shift to remove and identify tube wave irregularities.