Piping – slide 29

Schlumberger Private

PIPINGLine sizing:• gas/fluid velocities limitations to maximum :

- 80 ft/sec if solids (sand) or 2-phase flow.- 160 ft/sec for dry gas.

•if higher velocity expected, a full HAZOP is required as :- increase pipe ID, flare tip ID.- divers flow through more than one pipe.- reduce as much as practical the line length and

number of bends- reduce the choke size.

See FOH 1, Section 11 page 13 for gas velocity chart.