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:
Jun. 21, 2016
Filed:
Dec. 08, 2011
Steven Martin Hudson, Sturminster Newton, GB;
Robert Charles Bromwich, Blandford, GB;
Alexandra Vasil'evna Rogacheva, Southampton, GB;
Bridget Mary Weston, Warminster, GB;
Steven Martin Hudson, Sturminster Newton, GB;
Robert Charles Bromwich, Blandford, GB;
Alexandra Vasil'evna Rogacheva, Southampton, GB;
Bridget Mary Weston, Warminster, GB;
Expro North Sea Limited, Reading, GB;
Abstract
Downhole water level detecting apparatus for detecting the level of water in a formation in the region of a well installation. The detecting apparatus includes a transmitter for applying electrical signals to a signaling loop at a first location. The signaling loop includes a downhole metallic structure of the well installation and an earth return. The detecting apparatus also includes a detector for monitoring electrical signals in the signaling loop, and an evaluation unit arranged for determining a level of water in the formation relative to the downhole metallic structure in dependence on the monitored signals.