Asphasol is shale inhibitor in water base drilling mud

Asphasol is shale inhibitor in water base drilling mud-1

Asphasol is shale inhibitor in water base drilling mud

Asphasol shale inhibitor is a partially water-soluble, sulfonated organic material developed for use in most water-base drilling fluids. The shale inhibitor contains no surfactants as do most water-dispersible products used in shale-control applications.

Asphasol application

Asphasol is shale inhibitor can be used in most water-base drilling fluids. The shale inhibitor is a free-flowing powder and can be added directly to the mud system through the mixing hopper. Unlike some shale control additives, it is not necessary to pre-mix the inhibitor with oil and it contains no surfactants. Normal concentrations of shale inhibitor range from 2 to 10 lb/bbl (5.7 to 28.5 kg/m3) for most applications.

Advantages of usage

Contains no surfactants Premixing is not required Inhibits swelling and water-wetting of shales Reduces High-Temperature, High-Pressure (HTHP) fluid loss Reduces torque and drag Improves wall cake quality

Analyse of asphalsol

Typical Physical Properties Physical appearance: Blackish brown powder, free-flowing powder ph (2% solution): 7.5 – 9.5 Solubility in water : Minimum 50% by weight

Properties

Value

Appearance

Blackish brown  powder

Bulk Density

850-950 Kg / m3

PH (1% Solution )

>8.5

Moisture Content (% by weight)

< 10

Solubility in  water (%)

Min 75

Solubility in Oil (%)

Min 25

Solubility

75% Soluble in water balance Soluble in Oil

Sulphonate Group

Positive

Thermal Stability

250°C

Particle Size

> 90% through BSS 40.

HPHT Fluid Loss ml/30 Min

25-30

Lubricity Coeficient

0.3 Max

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