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All Journal Info-Teknik CITIZEN: Jurnal Ilmiah Mulitidisiplin Indonesia Indonesian Research Journal on Education
Sanjaya, Muhammad Diki
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Religion Arts Humanities Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Info-Teknik

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VARIASI DOSIS PENAMBAHAN PAC-R TERHADAP SIFAT FISIK LUMPUR PEMBORAN YANG TERKONTAMINASI GYPSUM Sanjaya, Muhammad Diki
INFO-TEKNIK Vol 26, No 2 (2025): INFOTEKNIK VOL. 26 NO. 2 DESEMBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v26i2.23314

Abstract

ABSTRACT One of Drilling is a critical process in oil and gas exploration and production, with its success highly dependent on the performance of drilling mud. Drilling mud serves essential functions such as maintaining wellbore stability, cooling the drill bit, and transporting cuttings to the surface. However, in field applications, the mud is often contaminated by formation materials, including gypsum. Gypsum contamination can negatively affect the physical properties of the mud, such as increasing filtrate volume and decreasing pH, which can reduce operational efficiency, compromise safety, and increase the risk of equipment damage.This study investigates the effect of adding PAC-R additive at concentrations of 0.25%, 0.5%, and 1% to water-based mud contaminated with 3% gypsum. The evaluation focused on key mud properties, including mud weight, plastic viscosity, yield point, gel strength, filtrate volume, and pH. The presence of 3% gypsum decreased the initial pH from 11 to 7.49 and increased the filtrate volume from 8 mL to 11 ml. The addition of 0.25% PAC-R to the contaminated mud raised the pH to 10.5, 0.5% PAC-R increased the pH to 10.8, while 1% PAC-R slightly reduced the pH to 10.2. These results indicate that PAC-R additive can help mitigate the adverse effects of gypsum contamination and improve the mud's physical properties. Keywords: gypsum contamination, plastic viscosity, yield point, gel strength, filtration loss.
Co-Authors Bambang Sugeng Sulardi . Toding, Maykel Gratia