| 摘要 |
<p>A coring apparatus comprising:-
an outer core barrel (12) associated with a drill bit (18);
an inner core barrel (14) adapted to accept a core sample; and
one or more sensors adapted to provide data relating to downhole conditions, the one or more sensors selected from the group of:-
a) a strain sensor (22) adapted to measure tension and/or compression experienced by the inner core barrel;
b) a first pressure sensor (24U) adapted to measure pressure outwith the inner barrel and a second pressure sensor (24L) adapted to measure pressure within the inner barrel;
c) a rotation sensor (26) adapted to measure relative rotation between the inner core barrel and the outer core barrel; and
d) a vibration sensor (28) adapted to measure vibration experienced by the inner barrel.
</p><p>Methods of monitoring a coring operation and a method of gathering information about a coring operation are also provided.
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