SPE Projects, Facilities & Construction
Volume 6,
Number 4,
December 2011,
pp. 185-191
Summary
The two hydraulic-diagnostic methods detailed in this paper can monitor the
"health" of a subsea hydraulic-control system, diagnose or predict a system
problem (particularly leaking or clogging problems), and locate its source by
using readily available valve-signature data.
The methods were tested in a laboratory environment using a hydraulic system
with simulated clogging and leaking mechanisms. Leak detection was performed
using both signature-matching and mass-balance methods. The results showed a
mean accuracy of 93% for mass-balance method and 82% for the signature-matching
method. Clog detection by signature matching showed high accuracy in the
controlled laboratory condition. The difference between the simulated and
actual clogging is within 1%.
The methods provide a monitoring tool for detecting and locating potential
leaks, blockages, and other system changes or anomalies, which could be used to
estimate the potential high cost of intervention, possible downtime, and lost
revenue.
© 2011. Society of Petroleum Engineers
View full textPDF
(
596 KB
)
History
- Original manuscript received:
20 September 2010
- Revised manuscript received:
3 March 2011
- Manuscript approved:
9 June 2011
- Published online:
5 December 2011
- Version of record:
16 December 2011
View Cart
