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:
Jan. 11, 2005
Filed:
Mar. 15, 2000
John William Aiden Millar, Wiltshire, GB;
Richard Hedley Clarke, Wiltshire, GB;
William Peter Stuart-bruges, Hampshire, GB;
John William Aiden Millar, Wiltshire, GB;
Richard Hedley Clarke, Wiltshire, GB;
William Peter Stuart-Bruges, Hampshire, GB;
Groundflow Ltd., Wiltshire, GB;
Sondex Ltd., Hampshire, GB;
Abstract
A method and apparatus for measuring the properties such as permeability of the rock surrounding a borehole in which a directional seismic or sonic signal is generated downhole and propagated into the surrounding formation to generate an electrokinetic signal and the focus of the seismic signal is moved in three dimensions in the surrounding rock by physically moving the source or by having two seismic sources which generate oscillating seismic signals at different frequencies and the focus of the seismic signal is varied by wave interference or wave interaction.