Subsea and landing string distributed temperature sensor system

Details Subsea and landing string distributed temperature sensor system Subsea and landing string distributed temperature sensor system

E - Fixed Constructions

21

B

E21B 47/06 (2006.01) E21B 17/01 (2006.01) E21B 33/035 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2731526

A line is deployed along a landing string or along a marine riser of a subsea well. The line has sensors, such as temperature sensors, distributed along its length. In one embodiment, the line comprises a fiber optic line that includes fiber optic temperature sensors distributed along its length. In another embodiment, the line comprises a fiber optic line used to transmit light, wherein the returned back-scatter light is analyzed to provide a temperature profile along the length of the fiber line. The fibre optic line can be deployed by connecting it to the landing string, pumping it down a pre-existing conduit (such as a hydraulic or chemical injection conduit), or pumping it down a dedicated fiber optic specific conduit.

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