1. Product introduction
This product is polyacrylonitrile fiber (zr-07), a micron well plugging agent for drilling, which is processed from fatty acid plant derivatives.
2. Product performance index
| Item | Index |
| Mass fraction of sieve residue (160 mesh), %≤ | 30.0 |
| water content, %≤ | 10.0 |
| Apparent viscosity, mPa.s≤ | 4 |
| Bearing capacity of sand bed, MPa≤ | 5.0 |
| Water bearing capacity of sand bed after strengthening, MPa≤ | 5.0 |
3. Purpose and function
It is mainly used in oil drilling fluid, which can effectively block the formation with small voids. Especially in the drilling process of shale formation, it can seal and block the micron scale pores of shale well wall, effectively prevent the penetration of water into the formation, and then prevent the occurrence of accidents such as well wall collapse.
4. Usage
It is added and used in proportion with other materials, with strong compatibility.