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Unformatted text preview: 92 Copyright(c) 2005 by Ali Ghalambor & Boyun Guo 96 The load line runs form the surface pressure
to the bottom of the casing string at a
gradient corresponding to the maximum
density of the treatment slurry.
Grad FF ⎡
⎢ (W + Wp )
= 0 . 052 ⎢
SPGp × 8 . 33
⎦ (Eq.13) Where: GradFF=Gradient of Fracture Fluid (psi/ft)
WBF= Weight of One Gallon of Base Frac. Fluid
Wp=Weight of Proppant per Gallon of Frac.Fluid SPGp=Specific Gravity of Proppant Fig.35 Burst Design Copyright(c) 2005 by Ali Ghalambor & Boyun Guo 194 97 Fig.36 illustrates the burst load line, in
generalized form for the production
casing designed for hydraulic fracturing
considerations. Fig.36 Burst Design Collapse Design
The collapse load is supplied by the
hydrostatic pressure of the heaviest mud
weight the string is to be run in ,and the
design factor is applied directly to this load.
The resulting design line is used as in the
other types of design to check and upgrad...
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This document was uploaded on 03/28/2014.
- Fall '14