BAKER HUGHES - Drilling Fluids Reference Manual

RESERVOIR APPLICATION FLUIDS
Choke Manifold
Buffer Tank
Choke & Kill Manifold
Mud Pump Charging Pumps
Mixing Pumps
Rig Pumps
Choke Lines
Upper Kill Line
Lower Kill Line
Reverse Circulating Line
Overboard Lines
Pit Gun Lines (All)
Transfer Lines:
To & From All Pits
To & From Filter Unit
Diverter
Equalizing Lines
Lines to Drill floor
Hole Fill Pump
Pop Off Lines
Bleed Off Lines
Kill Pump
Solids Handling Equipment
Hose to Boat
Relief Overboard (Cmt.)
Mud Cleaner Pump
H.P. Suction Manifold
Transfer line to cmt. unit
Strainers
Surface Cleaning Procedure
a) Pump the surface volume of mud into containers suitable for transfer to final destination.
Remove any solids build-up in pits, corners and discharge areas by mechanical means. A vacuum
system will greatly enhance the solids cleanup of the surface equipment. Also, with a high
temperature/high-pressure washer, external areas can be cleaned thoroughly. Mix 1-2 drums of
detergent into 100-150 bbls of water and flush all hoses, lines and pumps thoroughly, taking
returns back to the same pit. Pump this at the maximum safe rate.
b) Using the same fluid as in Step a) above and with the pipe rams closed, pump through all
choke/kill lines, manifold and rig floor standpipe equipment to thoroughly remove all OBM or
SBM residue. Pump at the maximum safe rate. Dispose of as per operator procedures.
Design of Displacement Pills
To ensure effective mud displacement and water wetting of the casing, the displacement pills need
to be designed carefully, especially when oil based muds are in use. Major functions for these pills
are:
• disperse and thin the drilling fluid
• compatible with the drilling fluids
BAKER HUGHES DRILLING FLUIDS
REFERENCE MANUAL
REVISION 2006 6-92