Casing Design: 2021 #25

In problem #23 above, the deepest casing section should be run no higher than (ft):
A) 14,913
B) 14,923
C) 14,933
D) 14,943
E) 14,953

Find the csg with next lowest rating, max depth:
7755/(7800/15000)=14,913 (below neutral point), “A”.
References: (TS12 P430; GB 11 DCA 1; RG P41, P67).

Casing Design: 2021 #24

True statements about casing design include (select any that apply):
__ Conductor casing is the first string set below the structural casing.
__ Liner is a casing string that does extend back to the wellhead.
__ Tieback string is a casing string that provides additional pressure integrity from the liner shoe to the wellhead.
__ Tiebacks can be uncemented.
__ Tiebacks can be cemented.
__ Burst pressure conditions occur during well control operations and squeeze cementing.
__ Most oilfield tubulars experience collapse in the “plastic” and “transition” regimes.
__ For certain casing sizes, the threads are intended to be leak resistant when made up.
__ Buckling is typically a more critical design issue for production tubing than for casing.

The provided Reference Guide on the exam offers no help on word problems; hence, there is no escape from prior experience or study on these types of questions. Please provide comments or ask questions in the comment box below.

 X Conductor casing is the first string set below the structural casing (TS2 P287)
__ Liner is a casing string that does [not] extend back to the wellhead (TS2 P288).
__ Tieback string is a casing string that provides additional pressure integrity from the liner [top] to the wellhead (TS2 P288).
 X Tiebacks can be uncemented.
 X Tiebacks can be cemented.
 X Burst pressure conditions occur during well control operations and squeeze cementing.
 X Most oilfield tubulars experience collapse in the “plastic” and “transition” regimes.
__ For [all] casing sizes, the threads are [not] intended to be leak resistant.
 X Buckling is typically a more critical design issue for production tubing than for casing (TS2 P304).