Carboxymethyl starch sodium (CMS)

2a3e7247-7521-4c54-a798-6700a5dba573

Carboxymethyl starch sodium (CMS)

API STARCH is used for filtration control in all types of water base drilling fluids ranging from fresh to salt saturated waters. It also has shale inhibitive characteristics.

Feature

Reduce filtration loss effectively; Increase viscosity slightly; Degradable, non-toxic and no harm the environment; Resist salt to saturation, reasonable calcium and magnesium resistance; Good filtration control performance under the condition of both low and high temperature.

Usage & Dosage

This product could be added into drilling fluid directly or slowly added into water to form dense colloid solution in case of forming large blocks to influence solution rate. Suggested dosage is 0.5-1 %.

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Product Specification
Carboxymethyl starch sodium (CMS)

ITEM

STANDARD

Appearance

White powder

Moisture

≤12%

Suspension capability

(150℃, 16hrs)

40g/l saline water

Fluid loss

≤15 ml

A.V.

≤10 m.Pas

Saturated saline water

Fluid loss

≤15 ml

A.V.

≤10 m.Pas


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