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modified starch for oil drilling/ Carboxymethyl starch
modified starch for oil drilling/ Carboxymethyl starch
Supplier Info
[China Supplier]
Contact Person : Ms. Zhang Eva
Tel : 86-371-65675292
Fax : 86-371-65801210
Product Detail
1. High performance of reducing filter loss 2. Non-sticky in drill fluid and reduce shearing force

CARBOXYL METHYL STARCH

Carboxyl Methyl Starch (CMS) is a kind of environmentally friendly and non-polluting drilling mud additive. This high quality fluid loss additive is widely used in oil drilling industry with high viscosity, corrosion resistance, high temperature resistance (140 °C), anti-calcic and salt resistance. The maximum salt resistance can reach to saturation state. The recognizance stability of clay can be improved greatly. During drilling salt paste layer, it will keep the stability of drill fluid and function of anti-collapse protection, and reduce the loss especially in the salinization well operations with high PH value and salinity.

ⅠProduct Character

1. High performance of reducing filter loss

2. Non-sticky in drill fluid and reduce shearing force

3. Anti-salt, anti-magnesium and anti-calcium. It can be used in drill fluid of fresh water,

saltwater and seawater.

4. High rheology and anti-high temperature performance.

5. Good compatibility with other processing agents

6. Non-toxic and environmental friendly

7. The molecular chain is short and it is easy to depredate. It is good to protect petroleum

and gas layer.

Ⅱ TECHNICAL SHEET

Name of index

Low viscosity

Medium viscosity

High viscosity

Appearance

Light yellow or white

Light yellow or white

Light yellow or white

Fineness (mesh)

10-100

10-100

10-100

Ion type

Anion

Anion

Anion

Loss on drying (%)

≤ 12

≤ 12

≤ 12

pH (1%)

8.0-12.0

8.0-12.0

8.0-12.0

Degree of substitution (DS)

≥ 0.8

≥ 0.8

≥ 0.8

Viscosity (mPa.s, 4% solution)

≤ 10000

10000-15000

≥ 15000

Undissolved substance (%)

≤ 0.5

≤ 0.5

≤ 0.5

Ⅲ PACKAGE

Packing: in 25kg or 22.7kg plastic bag Shelf life: 24months

modified starch for oil drilling/ Carboxymethyl starch

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