Back to results
US 6,959,140 B2Granted
Light path
AssigneeSchlumberger Technology Corporation
InventorsFabien Cens, Marian Faur
Life of this patent
Estimating the term…
Abstract
A light path extending between first and second zones that are sealed relative to each other by a sealing gasket is provided. The light path includes at least one optical fiber. The optical fiber is provided with a metal coating and passes through the sealing gasket.
Claims11
A light path extending between a first zone situated in the interior of an optical measurement tool and a second zone situated inside a well passing though geological formations, said first and second zones being sealed relative to each other, the light path comprising:
- at least one optical fiber that is metal coated at least on the part of its length at the junction between said first and second zones;
- and
- a protective sheath which contains the portion of the optical fiber situated in the second zone;
- wherein said protective sheath is separate from the optical fiber and is adapted to maintain the respective pressure inside the protective sheath substantially equal to the pressure inside the second zone situated inside a well passing though geological formations.
1 more element
Dependencies are inferred from the claim text.