Patent ID: 8937280
Filing Date: 2015-01-20
Classification: E21B,G01V

Abstract:
1. A system for monitoring a borehole in an earth formation, comprising: a borehole string configured to be disposed within the borehole, the borehole string configured to direct a fluid into the earth formation; at least one optical fiber sensor disposed on the borehole string at a fixed location relative to the borehole string, the optical fiber sensor including a plurality of measurement units disposed therein along a length of the optical fiber sensor, the plurality of measurement units configured to generate measurements of at least one of strain and deformation of the borehole string; at least one temperature sensor configured to measure a temperature at a plurality of locations along the length of the optical fiber sensor; and a processor configured to receive the measurements from the at least one optical fiber sensor, receive temperature measurements from the at least one temperature sensor, and identify a fluid leak in at least one of the borehole string and the formation based on a correlation of the measurements from the at least one optical fiber sensor and the temperature measurements.