Bridging performance of new eco-friendly lost circulation materials

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

Table 9 Performance of different LCMs in controlling the lost circulation of bentonite and RIA-X mud at 6.89 MPa (0.5 cm slot).

Mud type LCMs Loss volume/mL Degree of lost circulation Bentonite Mud 20 μg/L RIPI-LQC 2 050 Medium loss (higher than 1 000 ml) 25 μg/L RIPI-LQC 1 750 Medium loss (higher than 1 000 ml) 18 μg/L RIPI-LQC + 7 μg/L RIPI-LQF 750 Minimum loss (less than 1 000 ml) 20 μg/L RIPI-LQC + 5 μg/L RIPI-LQF 1 600 Medium loss (higher than 1 000 ml) 20 μg/L Quick seal Coarse 1 900 Medium loss (higher than 1 000 ml) 20 μg/L Quick seal Coarse + 5 μg/L RIPI-LQC 1 600 Medium loss (higher than 1 000 ml) 15 μg/L Quick seal Coarse + 10 μg/L RIPI-LQC 1 120 Medium loss (higher than 1 000 ml) RIA-X Mud 25 μg/L RIPI-LQC 1 400 Medium loss (higher than 1 000 ml) 20 μg/L RIPI-LQC + 5 μg/L RIPI-LQF 650 Minimum loss (less than 1 000 ml) 25 μg/L Quick seal Coarse 1 650 Medium loss (higher than 1 000 ml)