| 摘要 |
A biopolymeric drilling fluid comprises biopolymer, polymeric filtration additive, humates of alkali metals, potassium chloride, surfactant and water. In addition the drilling fluid comprises surfactant with property of interfacial tension reducing at the interface “drilling fluid filtrate – oil” up to critical density of micelle formation, and bactericide preventer of biopolymer enzymatic degradation and foam suppressant at following ration of components, wt.%:bioplymer 0.14-0.3;polymeric filtration additive 0.1- 0.3;humates of alkali metals 3.0-9.0;potassium chloride 1.0-5.0;bactericide preventer of biopolymer enzymatic degradation (MI-SIDE) 0.01-0.02;foam suppressant 0.01-0.03;surfactant with property of interfacial tension reducing at the interface “drilling fluid filtrate – oil” up to critical density of micelle formation 0.5-5.0technical water the rest. |
