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. 26, 2008
Filed:
Nov. 16, 2000
David Hoyle, St Nazaire les Eymes, FR;
Hitoshi Tashiro, Kamakura, JP;
Akira Otsuka, Machida, JP;
Jahir Pabon, Brookfield, CT (US);
Hitoshi Sugiyama, Sagamihara, JP;
David Hoyle, St Nazaire les Eymes, FR;
Hitoshi Tashiro, Kamakura, JP;
Akira Otsuka, Machida, JP;
Jahir Pabon, Brookfield, CT (US);
Hitoshi Sugiyama, Sagamihara, JP;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A formation logging tool having a substantially continuous central mandrel with regularly spaced mass blocks disposed thereon, at least some of the mass blocks carrying sensors such as receivers. By adopting this structure, the tool can be made to behave as a mass-spring structure and its flexural and extensional behaviour controlled such that its dispersion curve does not extend into the dispersion curve of the formation to be logged. The structure can be applied to the whole of the logging tool or just to the receiver section and/or any spacer section between the receiver and the transmitter section.