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Engineering Aspects of Unconventional Oil and Gas Reservoirs ...

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Decline Analysis: Blasingame-Rushing EUR Plot<br />

Question(s):<br />

●Is there a distinctly unique mechanism for<br />

establishing the validity <strong>of</strong> the hyperbolic<br />

relation? Yes, the "hyperbolic" decline "type<br />

curve" plot yields straight-line trends.<br />

Gp<br />

qg<br />

qgi<br />

1<br />

<br />

G<br />

<br />

<br />

<br />

(1<br />

b)<br />

<br />

G<br />

<br />

<br />

qgi<br />

(1 b)<br />

Di<br />

<br />

<br />

<br />

SPE 98042 (2005)<br />

A Production-Based Method for Direct<br />

Estimation <strong>of</strong> <strong>Gas</strong>-in-Place <strong>and</strong> Reserves<br />

T.A. Blasingame, Texas A&M U. <strong>and</strong><br />

J.A. Rushing, Anadarko Petroleum.<br />

Hyperbolic Decline: (0

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