Malianto, Muhammad (2024) Studi Laboratorium Pengaruh Penambahan Natrium Sulfit Pada Pati Jagung (amylum Maydis) Sebagai Bahan Alternatif Polimer Untuk Metode Produksi Minyak Tahap Tersier. Other thesis, Universitas Islam Riau.

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Abstract

There are 3 stages of oil production, primary recovery (initial stage), secondary recovery (second stage), tertiary recovery (advanced stage). The use of the EOR method to increase production at the tertiary stage is carried out by mobilizing the remaining trapped oil because it cannot be obtained by secondary recovery (water flooding). One method in this EOR stage is Polymer Flooding. This research discusses natural-based polymers (biopolymers) where the alternative polymer material uses corn starch. The choice of polymer concentration used in this research was 1000 ppm, 2000 ppm and 3000 ppm, using brine salinities of 5000 ppm, 15,000 ppm and 30,000 ppm with temperatures of 70?, 80? and 90? and the addition of sodium sulfite with a concentration of 0,1%. The research methodology used in this research is Experimental Research. The procedures carried out in this research were Compatibility Test, Density Measurement, Viscosity Determination, Shear Rate Test, and Thermal Test which were tested over a period of 0, 3 and 7 days to see its ability to maintain its viscosity. The corn starch polymer viscosity test gave the highest results at a polymer concentration of 3000 ppm, salinity 5000 ppm and a temperature of 70? of 2,270 cP, the lowest at a polymer concentration of 1000 ppm, salinity of 30,000 ppm and a temperature of 90? of 0.803 cP. Meanwhile, polymers with the addition of 0.1% sodium sulfite gave the highest results at a polymer concentration of 3000 ppm, salinity 5000 ppm and a temperature of 70? of 1.943 cP, the lowest at a polymer concentration of 1000 ppm, salinity of 30,000 ppm and a temperature of 90? of 0.690 cP. The viscosity and density test trend for both polymers produces higher viscosity and density with increasing polymer concentration, but decreases with increasing brine salinity and the test temperature used. The shear rate test shows that the polymer with the addition of sodium sulfite does not change the non-Newtonian fluid properties of the corn starch polymer. And the thermal test with a temperature of 90? showed a decrease in viscosity from day 0 to day 3 and day 3 to day 7, respectively for corn starch polymer 23.9% and 28.2% while corn starch polymer with the addition of sodium sulfite was 18.9% and 8.5%. So the addition of sodium sulfite will maintain the performance of corn starch polymer in high temperature fields

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