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Scientific Contributions Oil and Gas
Published by LEMIGAS
ISSN : 20893361     EISSN : 25410520     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy
The Scientific Contributions for Oil and Gas is the official journal of the Testing Center for Oil and Gas LEMIGAS for the dissemination of information on research activities, technology engineering development and laboratory testing in the oil and gas field. Manuscripts in English are accepted from all in any institutions, college and industry oil and gas throughout the country and overseas.
Arjuna Subject : Energi (semua kategori) - Teknologi Bahan Bakar
Articles 2 Documents
 1 
Search results for , issue "Vol 49 No 2 (2026)" : 2 Documents clear
Optimizing CO2 Storage Strategies for Enhanced MineralTrapping and Plume Containment in The Aquifer Zoneof an Indonesian Gas Reservoir Iskandar, Utomo Pratama; Arik; Panuju; Grandis, Garindia; Ilham, Nanda
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2067

Abstract

This study evaluates optimized CO₂ storage strategies in the aquifer zone of the SK gas field in Indonesia to improve plume containment and explore the potential for enhanced mineral trapping. A coupled compositional-flow and reactive-transport simulation workflow was applied using an upscaled reservoir model under a common safe operating pressure envelope and a containment constraint requiring the plume to remain within the aquifer zone over a 120-year simulation period. Three groups of scenarios were examined: well-placement sensitivity (A1–A3), production-assisted injection (B1–B3), and completion-design sensitivity (C1–C3). Among the baseline cases, A3 provided the best plume containment, with the most compact lateral footprint and smallest vertical plume spread, while A1 gave the highest total stored CO₂. Among the production-assisted cases, B2 was the most effective pressure-management option, producing the largest pressure reduction and a modest increase in total stored CO₂. Completion redesign generated the largest storage gains, increasing total stored CO₂ by about 28–33.3% relative to the corresponding baseline cases. Most scenarios maintained the plume confinement within the aquifer zone, although C1 showed localized upward CO₂ occurrence near the free-water level. Overall, the tested strategies improved storage performance, with A3 providing the best plume containment among the baseline cases, B2 delivering the strongest pressure-management benefit and increasing total stored CO₂ by approximately 3.93% relative to A2, and completion redesign producing the largest storage gains, increasing total stored CO₂ by about 28–33.3% relative to the corresponding baseline cases. Mineral trapping increased slightly in the completion-design cases, although it remained a minor component of total storage within the 120-year simulation period.
Potential Use of Kepok Banana Peel Waste as Raw Material for Carboxymethyl Cellulose for Oil and Gas Drilling Fluid Applications Wastu, Apriandi Rizkina Rangga; Permadi , Asep Kurnia; Wahyuningrum, Deana; Nugrahanti, Asri
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2070

Abstract

This research aims to evaluate the potential of kepok banana peel as a raw material for carboxymethyl cellulose synthesis and to assess its effects on the rheological properties and filtration of bentonite-based drilling mud. CMC is synthesized through a process of delignification, bleaching, alkalization, and carboxymethylation. CMC characterization includes alpha cellulose content, degree of substitution, purity, pH, FTIR, SEM, and EDS. The obtained CMC was added in drilling mud at concentrations of 3 g, 6 g, and 9 g, and the resulting mud was tested for mud rheology and filtrate volume. The results showed that the alpha-cellulose content was 91.60%, the degree of substitution was 1.0, and the purity was 88.17%, meeting the SNI CMC grade II standard. The application of CMC increased plastic viscosity (12–14 cP), yield point (19–21 lb/100 ft²), and gel strength (8–13 lb/100 ft² for 10 seconds; 12–17 lb/100 ft² for 10 minutes) as the concentration increased. The filtrate volume decreased from 15 ml to 13 ml/30 minutes, and the mud cake thickness decreased from 0.5 mm to 0.3 mm. The pH value was stable in the range of 9. It was concluded that CMC derived from kepok banana peel has the potential to serve as an environmentally friendly drilling mud additive.

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