COMMITTEE ON THE MONOGRAM

DIVISION OR ACTIVITY

COMMITTEE ON THE MONOGRAM

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API Spec 10A, Sec 10.1• The space between the slurry container and the walls of the

pressure vessel shall be completely filled with a hydrocarbon oil. The selected oil shall have the following physical properties:

• ⎯ viscosity range: 6 mm2/s to 79 mm2/s at 38 °C (100 °F) or 6 cSt to 79 cSt at 38 °C (100 °F); or

• 45 SSU to 360 SSU at 38 °C(100 °F);• ⎯ specific heat: 1,9 kJ/(kg K) to 2,5 kJ/(kg K) (0,45 Btu/lb °F to ⋅ ⋅ ⋅

0,60 Btu/lb °F); ⋅ (no condition indicated)• ⎯ thermal conductivity: 0,112 W/(m K) to 0,138 W/(m K) [0,065 ⋅ ⋅

Btu/(h ft2 °F/ft) to 0,08 Btu/(h ft2 °F/ft)]; ⋅ ⋅ ⋅ ⋅ (no condition indicated)

• ⎯ specific gravity: 0,83 to 0,93. (no condition indicated)

Date

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CONSISTOMETER OIL SPECIFICATIONS

• Specification as now written cannot be met• Possible solutions

– Amend current specification– Revise entire oil wording to allow for

synthetics

Date