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Once a gas or gas-condensate field can no
longer free-flow, gas compression is required. From this point
forward subsurface and compression performances become strongly
linked. The resulting interactions dictate the production
capacity of the overall asset. Bottlenecks may be as a result of
well flow capability, pipeline pressure drops or compression
capacity. Compression capacity may be dictated by one or more of
many factors such as driver power, maximum speed, recycle or
choke. Importantly, the primary bottleneck may change with time,
for example, initially compression choke might limit flows, to
be later replaced by driver power, which may later be replaced
by limited well capacity due to some wells falling below their
critical gas rates to avoid slugging.
Clearly, the many complex interactions between the numerous
elements in an overall asset require a rigorous integrated
model. Such capability is provided by
GASMAN.
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