| 摘要 |
Drilling fluid, containing bentonite, low-viscous carboxymethyl cellulose, ammonium acrylate, which is composed of 2-4 percent by weight of bentonite, 2-2.5 percent by weight of low-viscous carboxymethyl cellulose, 2-5 percent by weight of potassium chloride, 0.5-0.8 percent by weight of water-soluble urea-formaldehyde resin modified with sodium sulphite or potassium sulphite, and 0.2-0.4 percent by weight of modified or non-modified ammonium acrylate. |
