Drilling reagent “Lignoxin” grades “B” and “C”
TU U 24.6-24709453-003-2002
“Lignoxin” is designed to reduce fluid loss, liquefy and stabilize the rheological properties of water-based drilling fluids. In addition, the reagent allows you to improve the inhibitory properties of solutions; it is most effective in potassium systems as an additional source of potassium ions, which in turn reduces the need for potassium chloride by 25%.
The use of “Lignoxin” in combination with polymers increases their functional capabilities and significantly reduces the consumption of polymers, primarily CMC. Its use is advisable in the form of a pre-prepared solution to provide polymer-humate complexes.
The optimal concentration of “Lignoxin” for treating drilling fluids is from 0.5 to 2% by weight as a diluent and from 2 to 5% by weight to reduce fluid loss.
Currently, in foreign practice, a similar reagent is widely used under the trade names “K-17”; “K-lig”; “XKB-lig”; “KEM-lig.”
Main physical properties:
| – appearance | free-flowing powder from dark brown to black |
|---|---|
| – pH of 1% solution | 9.5-10.5 |
| – bulk density | 800 kg/m3 |
Quality indicator table.
| Quality indicators | Norm according to specifications | ||
|---|---|---|---|
| 1 | Appearance | Brand “B” | Mark “C” |
| Powder from brown to black | |||
| 2 | Filtration rate of 10% aqueous suspension, cm³, no more | 6.0 | 6.0 |
| 3 | Mass part of total moisture, %, no more | 28 | 15 |
| 4 | Mass part of excess caustic potassium, %, no more | from 20 to 22 | from 22 to 24 |
| 5 | Granulometric characteristics, output size class 3 mm, %, no more | 3 | 3 |
| 6 | Mass part of potassium humates (in terms of dry weight), %, not less | 30 | 30 |
| 7 | Solubility, %, not less than * | 42 | 42 |
* The indicator is determined according to the customer’s request
Advantages:
• effective in chlorine-potassium solutions;
• limits water absorption by shale;
• improves the quality of the filter cake;
• reduces the likelihood of differential sticking;
• improves the inhibitory properties of solutions;
• effective up to t –170ºС without the use of drugs that increase heat resistance;
• helps improve the inhibitory properties of solutions.
• resistant to monovalent salts.
Economic effect:
Using 2.5 tons of Lignoxin when preparing 100 m³ of standard potassium chloride solution allows you to save 0.5 tons of CMC and 2 tons of KCl or replace more expensive reagents thinners.
Packaging:
disposable container “Big Bag” – one ton.
Loading standards: railway gondola car – 67 tons.