Fiber optic differential pressure sensor
AssigneeWelldynamics, Inc.
InventorsNeal G. Skinner, John R. Dennis, Donald H. Perkins
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Abstract
A fiber optic differential pressure sensor. In a described embodiment, a differential pressure sensor system for use in a subterranean well includes a fluid property sensing housing having a flow passage formed therethrough. A differential pressure sensor has an optical fiber extending in a wall having a first side and a second side, each of the first and second sides being exposed to pressure in the flow passage.
Claims13
A differential pressure sensor system for use in a subterranean well, the system comprising:
- a fluid property sensing housing having a flow passage formed therethrough, the flow passage having first, second and third longitudinally distributed portions, the second portion being positioned between the first and third portions, and a flow area of the second portion being greater than a flow area of each of the first and third portions;
- and
- a differential pressure sensor including an optical medium attached to a first wall having a first side and a second side, each of the first and second sides being exposed to pressure in the flow passage.
A differential pressure sensor system for use in a subterranean well, the system comprising:
- a fluid property sensing housing having a flow passage formed therethrough;
- and
- a differential pressure sensor including an optical medium attached to a first wall having a first side and a second side, each of the first and second sides being exposed to pressure in the flow passage, and the pressure sensor further including multiple strain sensing elements, at least one of the strain sensing elements experiencing compressive strain in response to exposure of the first wall to pressure in the flow passage, and another of the strain sensing elements experiencing tensile strain in response to exposure of the first wall to pressure in the flow passage.
Dependencies are inferred from the claim text.