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:
May. 16, 2006
Filed:
Nov. 24, 2004
Rodney William Calvert, Houston, TX (US);
Rodney William Calvert, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A method of obtaining a spatial model of a property of part of a subsurface formation located between underground seismic receivers in which at least two sets of pairs of seismic receivers are utilized and one pair of receivers is used to record a signal from a seimic source and obtaining a response by solving (s(−t){circle around (x)}s(t))=r(t){circle around (x)}(s(−t){circle around (x)}s21(t)), wherein the symbol {circle around (x)} denotes convolution and wherein s(−t) is the time-reverse of the signal s(t). A path-related attribute is selected from transmission response r(t) that corresponds to the property of the subsurface formation and a tomographic reconstruction technique is applied to the path-related attribute to obtain the spatial model of the property of part of the subsurface formation.