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General introduction

Carboxymethyl Starch CMS-II for Drilling Fluid is water soluble product after alkalization of starch and etherification of chloracetic acid . It can effectively control filtration loss of fresh water and salt water drilling fluids. It has the characteristics of being easily degradable, azymic, little influence on rheology behaviour . It is a cheap substitute of CMC.

Property index

Items

Index

Appearance

Free flowing powder or particle

Moisture , %

≤12.0

Screening ( 0.90mm ), %

≤10.0

4%salt water FL ,m L

Room temperature

≤ 12.0

 

After 150℃/16h

≤ 12.0

Saturated salt water ,m L

Room temperature

≤ 15.0

 

After 150℃/16h

≤ 15.0

Features

1. It can effectively reduce filtration loss of fresh water and salt water drilling fluids.

2. Good ability of high temperature resistance ,temperature resistance reaches 140 ℃ .

3. Good compatibility with other additives.

4. Nontoxic.

5. Routine dosage is 0.3~0.5%.

Notes

This product should be stored in a cool, ventilated place to avoid the sun and rain.

Package

It is packed in composite paper sacks, with net weight 25kg per sa ck.