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US 7,071,697 B2Granted
Centralizer including measurement means
AssigneeSchlumberger Technology Corporation
InventorsEmmanuel Rioufol, Philippe Gambier, Eric Veignat, Ian Raw, Ian David Bryant
Life of this patent
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Abstract
A centralizer (1) for position a casing (3) in a conduit (4) passing through underground formations includes measurement means (7) such as an electrode for deriving at least one representative parameter of the formations.
Claims6
A centralizer for positioning a casing in a conduit passing trough underground formations, the centralizer comprising:
- at least two substantially semi-cylindrical parts that can be fixed to one another so as to surround the casing;
- a plurality of blades;
- and
- measurement means for determining at least one parameter representative of the formations;
- wherein at least one blade in the plurality of blades is rigid and an internal wall of the rigid blade comprises a recess which receives the measurement means.
2 more elements
Dependencies are inferred from the claim text.