Psi

SECTION 6 : WELL CONTROL EQUIPMENT

Only packing elements which are supplied by the manufacturer of the annular preventer should be used. New or repaired units obtained from other service companies should not be used since the preventer manufacturers cannot be held responsible for malfunction of their equipment unless their elements are installed.

Figure 6.2.11 Packing unit selection (from Hydril)

PACKING UNIT

IDENTIFICATION

OPERATING

DRILLING FLUID

TYPE

Colour

Code

TEMP RANGE

COMPATIBILITY

NATURAL RUBBER

Black

NR

-30°F - 225°F

Waterbase Fluid

NITRILE RUBBER

Red

NBR Band

20°F - 190°F

Oil base/Oil Additive Fluid

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