Bridging performance of new eco-friendly lost circulation materials

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

Table 5 Performance of different LCMs in controlling lost circulation of bentonite and RIA-X muds at 6.89 MPa (0.1 cm slot).

Mud type LCMs Amount of lost circulation/mL Degree of lost circulation Bentonite Mud 10 μg/L RIPI-LQC 390 Minimum loss (less than 1 000 ml) 10 μg/L Quick seal Coarse 510 Minimum loss (less than 1 000 ml) 15 μg/L Vermiculite 1 200 Medium loss (higher than 1 000 ml) 25 μg/L Oyster Shell 3 500 Complete loss (3 500 ml) 25 μg/L Mica Coarse 3 500 Complete loss (3 500 ml) 20 μg/L PF-BD1-Fiber 3 500 Complete loss (3 500 ml) 25 μg/L PF-BD1-Fiber 3 500 Complete loss (3 500 ml) 25 μg/L ResiDrill 3 500 Complete loss (3 500 ml) RIA-X Mud 10 μg/L RIPI-LQC 50 Minimum loss (less than 1 000 ml) 10 μg/L Quick seal Coarse 300 Minimum loss (less than 1 000 ml) 15 μg/L Vermiculite 1 050 Medium loss (higher than 1 000 ml) 25 μg/L Oyster Shell 3 500 Complete loss (3 500 ml) 25 μg/L Mica Coarse 3 500 Complete loss (3 500 ml) 20 μg/L PF-BD1-Fiber 3 500 Complete loss (3 500 ml) 25 μg/L PF-BD1-Fiber 3 500 Complete loss (3 500 ml) 25 μg/L ResiDrill 3 500 Complete loss (3 500 ml)