Apparatus and Method for Monitoring the Mechanical Properties of Subsea Longitudinal Vertical Components in Offshore Drilling and Production Applications

摘要

An apparatus to monitor the loads and mechanical behavior of subsea longitudinal vertical components of off shore drilling and production platforms (SLVCs) uses sensors attached directly to the tendons by adhesive or by friction mount. The sensors are typically in a sensor ring assembly which is placed around the perimeter of the SLVC. Ruggedized cables carry the sensor reading from the ring assembly to the SLVC working platform and to a control center for monitoring the action and stresses on the tension legs. The system may be deployed on existing SLVCs or may be installed on new construction during initial assembly and installation.

主权项

1. An apparatus for measuring the mechanical properties of an SLVC, comprising:
a. A sensor ring assembly mounted substantially about the outer perimeter of the SLVC at a desired location the sea surface; b. A fiberoptic sensor mounted in the ring and in communication with the SLVC, said sensors adapted for collecting at least one of the following data relating to the stress, strain, compression, expansion, twisting of the SLVC as it responds to subsea environmental conditions; and c. An umbilical cable attached to the sensors for communicating sensor data to the surface.