15.03.2018 Views

BAKER HUGHES - Drilling Fluids Reference Manual

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

PRESSURE PREDICTION AND CONTROL<br />

NOMENCLATURE<br />

psi/ft<br />

Pressure gradient of a column of fluid<br />

units<br />

MW 1 Initial fluid (mud) weight or fluid (mud) weight in hole lb m /gal<br />

MW 2 Required or maximum anticipated fluid (mud) weight lb m /gal<br />

EMW<br />

P s<br />

F mw<br />

TVD<br />

TVD s<br />

ICP<br />

FCP<br />

SIDP<br />

SICP<br />

Equivalent fluid (mud) weight<br />

Surface pressure imposed on a fluid column<br />

Fracture point (pressure integrity) of a formation<br />

True vertical depth<br />

True vertical depth of casing shoe<br />

Initial circulating pressure<br />

Final circulating pressure<br />

Shut-in drillpipe pressure<br />

Shut-in casing pressure<br />

lb m /gal<br />

psi<br />

lb m /gal<br />

W 1 Density of fluids invading wellbore lb m /gal<br />

L<br />

P<br />

V<br />

Length of the column of invading fluids in the annulus<br />

Formation pressure in thousands of psi (Example: 8000 would be<br />

expressed as 8.0 in the equation)<br />

Pit gain<br />

feet<br />

feet<br />

psi<br />

psi<br />

psi<br />

psi<br />

feet<br />

psi<br />

bbl<br />

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

REFERENCE MANUAL<br />

REVISION 2006 12-42

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!