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Vegetable Gum Coating and Inhibiting Agent for Drilling Fluid—JHPB 2014-01-23 12:04:44 .jpg)
Introduction
It is produced from the cross linking reaction and graft modification of vegetable gum.
Main Features
- with big molecular weight, containing ionogen with rejection capability and adsorbability, which can coat drilling cuttings to depress the dispersibility and dilatability of it;
- be useful to inhibit the dispersibility and swelling of borehole;
- with excellent resistance to salt and calcium;
- with non-toxicity.
Usage
It can be made into colloid and then added into drilling fluid, and the addition is 1.0%～1.5%.
Main Quality Indexes
ITEM
INDEX
extrinsic features
jonquil grain or powder which can free flow
apparent viscosity of sample in distilled water /(mPa·s)
≥30.0
apparent viscosity of sample in 20% saline solution
/(mPa·s)
≥10.0
apparent viscosity of sample in 20% saline solution with 5% of test sodium soil
/(mPa·s)
≤30.0
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