05845033 is referenced by 95 patents and cites 2 patents.

A sensor apparatus and method for identifying a restriction in the flowline of a hydrocarbon production system, utilizes an optical fiber or optical fiber cable which is engaged along and preferably spirally wound around and along the flowline. Spaced apart strain gauges which are advantageously in the form of Bragg grating sensors, are engaged with the optical fiber at spaced locations along the flowline. The strain gauges are also engaged with the flowline to measure strain in the flowline. The hoop strain in particular indicates a change in pressure which can be measured by light signals supplied to and received from the optical fiber. Differences in strain along the flowline indicate pressure gradients in the flowline which in turn identify restrictions in the flowline.

Title
Fiber optic sensing system for monitoring restrictions in hydrocarbon production systems
Application Number
8/745145
Publication Number
5845033
Application Date
November 7, 1996
Publication Date
December 1, 1998
Inventor
Daniel P Birmingham
North Canton
OH, US
John W Berthold
Salem
OH, US
Agent
Robert J Edwards
Daniel S Kalka
Assignee
The Babcock & Wilcox Company
LA, US
IPC
G02B 6/00
View Original Source