Problem 80: The most accurate statement about oilfield casing is:
(A) API classifies casing by five properties, namely: manner of manufacture, steel grade...
(B) There are only 12 steel API standard casing grades, which includes L-80 and Q-125.
(C) If oilfield tubulars experience collapse, most do so in “elastic” & “transition” regimes.
(D) A tieback provides pressure integrity from liner top to wellhead & can be partially cemented.
This solution is found on Guidebook 6 DTC 11. Further information is in HS II.
(A) Length range, not new or used. So false.
(B) 10 steel API standard casing grades, not 12. Also false.
(C) Most collapse is in “plastic” & “transition” regimes, sans "elastic". False.
(D) True; this is what a "tieback" is, and it can indeed be partially cemented.
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