The actual intermediate casing setting depth is

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Unformatted text preview: surface casing. The actual value of differential pressure is calculated by: ΔPDepthofMaximumΔP=(MWCasingPoint-FPDepthof MaximumΔP)(0.052)(DepthMaximumΔP) ( Eq.4) 243 Intermediate Casing Point Determination If the tentative casing point is a drilling liner point, the next objective is to decide where the intermediate casing is to be set. The actual intermediate casing setting depth is determined by solving for the mud weight which can be in the hole at intermediate casing point so as not to exceed the allowable depth. ΔPAllowable=(MW-FPDepthof MaximumΔP)(0.052)(DepthMaximumΔP) (Eq.5) 244 Copyright(c) 2005 by Ali Ghalambor & Boyun Guo 122 Drilling Interval When a drilling liner is to be used with an intermediate string, the drilling liner can probable be set anywhere within and interval of hole. The shallowest depth for a drilling liner has already been established. The deepest depth to which a drilling liner can be set can only be calculated once the intermediate casing setting...
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This document was uploaded on 03/28/2014.

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