Industrial paper - Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111990V (2019)
Offshore field validation of a FBG based pressure/temperature sensor during a wireline intervention
Ji-Ying Huang, Jan Van Roosbroeck, Johan Vlekken, Bram Van Hoe, Geir Kaada, Morten Talgø, Anders Leirvik, Thomas Geernaert, Francis Berghmans, Christophe Caucheteur, Eric Lindner
Short description
In this paper, we report on an offshore field validation of a FBG based optical fiber sensor for simultaneous monitoring of hydrostatic pressure and temperature. The sensor consists of a femtosecond laser induced grating written in a Butterfly microstructured fiber. The sensor has an extremely low cross-sensitivity between temperature and pressure which makes it ideal for monitoring large transients in pressure or temperature, like is the case in wireline intervention. Pressure and temperature readings from the FBG based optical fiber sensor are compared with the readings from a battery powered electrical quartz gauge during an offshore wireline intervention job in an oil well. Good agreement was found between both measurements.