Subsystem | Time to initial failure (Hrs.) | Time to next failure (TNF) (Hrs.) |
Air drilling system | 255 | 9 + WEIB (240, 0.376) |
Hoisting system | 679 | 4 + EXPO (606) |
Power system | 1963 | 2 + WEIB (289, 0.339) |
Well control system | 240 | 412 + WEIB (121, 0.235) |
Well monitoring system | 2022 | UNIF (122, 2.92e+003) |
Circulating system | 5116 | −0.001 + EXPO (77.7) |
Mechanical handling system | 4836 | 5116 |
Top drive system | 413 | 2 + WEIB (320, 0.339) |