Gauge apparatus, system and method
AssigneeExpro North Sea Limited
InventorOleg Bogdanov
Life of this patent
Estimating the term…
Abstract
A gauge apparatus includes a body member, one or more gauge arms biased outwardly from the body member for engagement with a wall of the elongated space, and one or more deformable regions. The gauge apparatus is configured so that a variation in an outward extension of each gauge arm from the body member induces a change in strain in a corresponding one of the one or more deformable regions. A gauge system includes the gauge apparatus and an optical fiber attached to the gauge apparatus so that a strain in each deformable region of the gauge apparatus is transferred to a corresponding sensor portion of the optical fiber. The gauge system may be used for making real-time measurements of a geometry of an elongated space such as a wellbore of an oil and gas well.
Claims25
A gauge apparatus for use in making real-time measurements of a geometry of an elongated space, the gauge apparatus comprising:
- a body member;
- one or more gauge arms biased outwardly from the body member for engagement with a wall of the elongated space;
- and
- one or more deformable regions,
- wherein the gauge apparatus is configured so that a variation in an outward extension of each gauge arm from the body member induces a change in strain in a corresponding one of the one or more deformable regions, and
- wherein the gauge apparatus is configured for attachment of an optical fiber to the gauge apparatus so that a strain in each deformable region of the gauge apparatus is transferred to a corresponding sensor portion of the optical fiber.
(canceled)
(canceled)
(canceled)
(canceled)
A method for use in making real-time measurements of a geometry of an elongated space, the method comprising:
- passing a gauge apparatus along the elongated space with one or more gauge arms of the gauge apparatus biased outwardly into engagement with a wall of the elongated space so that any variation in a transverse geometry of the elongated space causes a variation in an outward extension of each gauge arm from a body member of the gauge apparatus,
- wherein the gauge apparatus is configured so that the variation in the outward extension of each gauge arm from the body member induces a change in strain in a corresponding deformable region of the gauge apparatus and wherein an optical fiber is attached to the gauge apparatus so that a strain in each deformable region of the gauge apparatus is transferred to a corresponding sensor portion of the optical fiber.
(canceled)
Dependencies are inferred from the claim text.