Bridging performance of new eco-friendly lost circulation materials

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

Table 7 Performance of different LCMs in controlling the lost circulation of bentonite and RIA-X muds at 6.89 MPa (0.3 cm slot).

Mud type LCMs Amount of lost circulation/mL Degree of lost circulation Bentonite Mud 15 μg/L RIPI-LQC 750 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 950 Minimum loss (less than 1 000 ml) 25 μg/L Vermiculite 3 500 Complete loss (3 500 ml) 30 μg/L Vermiculite 3 500 Complete loss (3 500 ml) RIA-X Mud 15 μg/L RIPI-LQC 720 Minimum loss (less than 1 000 ml) 20 μg/L RIPI-LQC 360 Minimum loss (less than 1 000 ml) 15 μg/L Quick seal Coarse 760 Minimum loss (less than 1 000 ml) 25 μg/L Vermiculite 3 500 Complete loss (3 500 ml) 30 μg/L Vermiculite 3 500 Complete loss (3 500 ml)