Bridging performance of new eco-friendly lost circulation materials

Alireza NASIRI,Ahmadreza GHAFFARKHAH,Zahra Azimi DIJVEJIN,Masood MOSTOFI,Mostafa Keshavarz MORAVEJI

Table 6 Performance of different LCMs in controlling the lost circulation of bentonite and RIA-X muds at 6.89 MPa (0.2 cm slot).

Mud type LCMs Amount of lost circulation/mL Degree of lost circulation Bentonite Mud 10 μg/L RIPI-LQC 650 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 800 Minimum loss (less than 1 000 ml) 15 μg/L Vermiculite 3 500 Complete loss (3 500 ml) 20 μg/L Vermiculite 1 950 Medium loss (higher than 1 000 ml) RIA-X Mud 10 μg/L RIPI-LQC 550 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 650 Minimum loss (less than 1 000 ml) 15 μg/L Vermiculite 3 500 Complete loss (3 500 mL) 20 μg/L Vermiculite 1 650 Medium loss (higher than 1 000 ml)