Problem 60: The statement about well total systems analysis that is most FALSE is:
(A) If the inflow and outflow curves do not intersect, the well will not flow.
(B) If the inflow & outflow curves have two intersection points, the lower rate is not a stable solution and is meaningless (please correct this typo in the Guidebook; it has been corrected in V3).
(C) The first step in applying systems analysis is to select a node to divide the system.
(D) The node is typically selected to be at the choke to isolate the inflow performance from the flow behavior in the tubing.
Reference Guidebook 7 PRD 1 and HS4 29, 30, 32, 32. The answer is (D) as the node typically selected is the perforations.
I agree that (D) is false, but what about (B), isn't it false as well? The lower rate is in the unstable region while the higher rate is in stable region.
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DeleteThanks Ahmed; this was just a typo here; the actual problem does say "lower".
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