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:
Apr. 21, 2009
Filed:
Apr. 09, 2004
Stéphane Hiron, Rosharon, TX (US);
Yves Mathieu, Clamart Cedex, FR;
Christian Chouzenoux, Clamart Cedex, FR;
Patrick Gourdonneau, Clamart Cedex, FR;
Nicolas Renoux, Clamart Cedex, FR;
Stéphane Hiron, Rosharon, TX (US);
Yves Mathieu, Clamart Cedex, FR;
Christian Chouzenoux, Clamart Cedex, FR;
Patrick Gourdonneau, Clamart Cedex, FR;
Nicolas Renoux, Clamart Cedex, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A well instrumentation system, comprising: a power and data supply; and a plurality of functional units attached to the power and data supply and distributed throughout the well, characterised in that the power and data supply comprises first and second substantially identical cables, and in that each unit comprises a first power supply channel and a first data channel connected to the first cable, a second power supply channel and a second data channel connected to the second cable, and a functional module which draws power from the first power supply channel or the second power channel module, and data from the first data channel or the second data channel. The power and data supply can comprise a surface unit that can be selectably connected to either the first or second cable. The selection of connection of the surface unit to one or other cable is effective to select the corresponding power and data channels in the functional units.