CPC E21B 47/117 (2020.05) [E21B 33/043 (2013.01)] | 15 Claims |
1. An assembly comprising:
two tubular elements;
a primary seal and a secondary seal arranged between the two tubular elements;
a seal cavity formed between the two tubular elements, the primary seal and the secondary seal; and
a seal monitoring apparatus comprising a housing and a position sensor,
the housing comprising a chamber wherein is arranged a separator, the separator dividing the chamber into a first sub-chamber and a second sub-chamber, the first sub-chamber being fluidly connected to the seal cavity and being filled with a hydraulic fluid, the separator being movable in a first direction relative to the housing so as to increase a volume of the first sub-chamber and to decrease a volume of the second sub-chamber, and in a second direction relative to the housing so as to decrease the volume of the first sub-chamber and to increase the volume of the second sub-chamber, and
the position sensor being configured to generate an electrical signal which represents a position of the separator relative to the housing.
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