Problem 14. A 50 API retrograde gas-condensate reservoir at 2,500 psia & 225 dF has a gaseous equivalent (scf) closest to:
(A) 720
(B) 770
(C) 820
(D) 870?
Straightforward 3-step solution; 13 RES 11 has all needed equations on a single page:
1. Mo = 5954/(api-8.8) = 145.
2. SGo=(1.008*145)/(42.43 + 145) = 0.78.
3. 133,300(0.78/145) = 719 or (A).
Note this problem is more wordy and confusing than is shown above; for the answer here I merely remove all the unneeded information for clarity. But I strongly recommend doing these practice problems in test format. Practicing the confusing nature of problem wording, under time constraint, is critical.
Note in the new book it is 13 Res 11
ReplyDeleteThanks!
DeleteI think ... it is 13 RES 9
DeleteIt's 13 RES 11 in 2018 V2 (Sept).
DeleteI get the same answer using Bg = 0.00504ZT/P if z=1, but z~0.86 which equates to 860scf (D). Is this correct?
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