PERENCANAAN SQUEEZE CEMENTING JOB PADA SUMUR “RF-L”, LAPANGAN “D” DENGAN MENGGUNAKAN METODE BALANCE PLUG

This research aims to design a squeeze cementing job for well “RF-L” in field “D” using the balance plug method to isolate the MFS-8 formation layer, which has shown a decline in productivity and an increase in water production. The research method involved gathering well data, calculating the required volumes of cement, spacer, and displacement fluids, and simulating the cementing process using the balance plug technique. The calculations were based on casing, tubing, perforation, and reservoir pressure data. The results indicate that the cementing operation requires 46 sacks of Class G cement with a total slurry volume of 9.402 bbl and 5.5 bbl of mixing water. The volume of spacer ahead was 12.81 bbl and spacer behind was 1.09 bbl, while the displacement fluid volume was 4.5 bbl (after subtracting 1 bbl of underdisplacement). Reverse circulation of 5.2 bbl was performed to clean residual slurry from the tubing. Hesitation and Waiting on Cement (WOC) were applied to ensure the cement hardened properly in the target zone without damaging the formation.