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BAKER HUGHES - Drilling Fluids Reference Manual

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RESERVOIR APPLICATION FLUIDS<br />

Figure 6 - 25<br />

Simulation of WSA C06 (WSAP-16) Wellbore Displacement<br />

and Clean-up<br />

Casing Clean-Up<br />

Oil base mud being<br />

displaced up the kill<br />

and choke lines<br />

In stage 1 the<br />

riser volume is<br />

stationary<br />

Leading edge of base<br />

oil spacer moving up<br />

Weighted/viscosified<br />

non-aqueous spacer<br />

Neat, non-aqueous<br />

spacer<br />

Leading edge<br />

clear brine fluid<br />

entering the<br />

kill/choke line<br />

Weighted/viscosified<br />

non-aqueous spacer<br />

Viscous HEC brine<br />

spacer<br />

Clear Brine<br />

<strong>BAKER</strong> <strong>HUGHES</strong> DRILLING FLUIDS<br />

REFERENCE MANUAL<br />

REVISION 2006 6-112

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