| 摘要 |
A dispersion solution for drilling obtained by dispersing, in an aqueous medium, a polyoxalate as the hydrolysable resin material. The dispersion solution for drilling comprises an aqueous medium in which is dispersed the hydrolysable resin material that exhibits a high hydrolysable capability at a temperature of as low as 80°C or lower and, specifically, 60°C or lower. The dispersion solution for drilling is used for the well drilling method such as hydraulic fracturing method, rotary drilling method or riserless drilling method. |
