Bridging performance of new eco-friendly lost circulation materials

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

Table 8 Performance of different LCMs in controlling the lost circulation of bentonite and RIA-X muds at 6.89 MPa (0.4 cm slot).

Mud type LCMs Amount of lost circulation/mL Degree of lost circulation Bentonite Mud 15 μg/L RIPI-LQC 1 400 Medium loss (3 500 ml) 20 μg/L RIPI-LQC 850 Minimum loss (less than 1 000 ml) 20 μg/L RIPI-LQC + 5 μg/L RIPI-LQF 600 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 1 350 Medium loss (3 500 ml ) 20 μg/L Quick seal Coarse 950 Minimum loss (less than 1 000 ml) 15 μg/L RIPI-LQC + 15 μg/L Vermiculite 3 500 Complete loss (3 500 ml) 20 μg/L RIPI-LQC + 10 μg/L Vermiculite 2 950 Medium loss (higher than 1 000 ml) RIA-X Mud 15 μg/L RIPI-LQC 1 100 Medium loss (3 500 ml) 20 μg/L RIPI-LQC 700 Minimum loss (less than 1 000 ml) 20 μg/L RIPI-LQC + 5 μg/L RIPI-LQF 450 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 1 250 Medium loss (3 500 ml) 20 μg/L Quick seal Coarse 820 Minimum loss (less than 1 000 ml) 15 μg/L RIPI-LQC + 15 μg/L Vermiculite 3 500 Complete loss (3 500 ml) 20 μg/L RIPI-LQC + 10 μg/L Vermiculite 2 750 Medium loss (higher than 1 000 ml)