Polyol (Grade-II)

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Specification of polylol (Grade-II)

(ONGC / MC / 52 / 2007)


Physical State :
The material shall be in the form of liquid at 24 ± 2oC, free from visible impurites.

pH of 3% (v / v) Sample in 5% (w / v) KCI Solution in Distilled water. : 6.0 - 7.5

Surface Tension of 3% (v / v) sample 10%(w / v) KCI Solusion in Distilled water dynes / cm : 40 ± 5

Hydroxyl Value mg KOH / g of Sample : 170 - 210

Iodoform Test for Confirmation of Presence of a-carbon in Sample. : Should be positive

Performance Test :
  • Preparationof of base mud : Prepare 10 - 15 cP Bentonite Suspension from pre-hydrated Bentonite Suspension prepared by stirring 10% (w/v) Bentonite in Distilled Water for 30 minutes using Laboratory stirres (5000 - 6000 rpm ) and aged for 72 hours at 90 ± 2oC by diluting with Distilled Water and stirring in a Hamilton Beach Mixer for 20 minuts. Treat the prepared Bentonite Suspension with KCI (10% w / v) and age for 24 houre at 24 ± 2oC After that add PHPA (0.2% w / v) +PAC (Regulaar Grade) (0.5% w / v) + PAC (Low Viscosity Grade) (0.3% w / v) +