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. 10, 1989
Filed:
Jun. 08, 1987
Applicant:
Inventor:
Brian E Hornby, Ridgefield, CT (US);
Assignee:
Schlumberger Technology Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
367 31 ; 367 32 ; 367 75 ;
Abstract
A method for determining the fluid mobility or permeability of subsurface formations using borehole measurements of the tube wave. The slowness of an hypothetical tube wave travelling in an elastic, nonpermeable medium is computed based on various measured parameters such as the formation matrix density, fluid density and fluid acoustic slowness. This elastic model slowness is subtracted from the measured tube wave slowness of a selected formation traversed by the borehole, and the difference is used to determine the formation permeability.