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All Journal Journal of Geoscience, Engineering, Environment, and Technology Journal of Petroleum and Geothermal Technology Jurnal Offshore: Oil, Production Facilities, and Renewable Energy Scientific Contributions Oil and Gas
Buntoro, Aris
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science Mechanical Engineering Physics

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ANALISA KOMPOSISI MINERAL CLAY TERHADAP KUALITAS RESERVOIR BATUPASIR LAPANGAN BETUNG, FORMASI AIRBENAKAT, SUB-CEKUNGAN JAMBI, CEKUNGAN SUMATERA SELATAN Irmaya, Aisyah Indah; Rahmad, Basuki; Kristanto, Dedy; Buntoro, Aris; Siregar, Anggi Deliana
Jurnal Offshore: Oil, Production Facilities and Renewable Energy Vol. 7 No. 2 (2023): Jurnal Offshore: Oil, Production Facilities and Renewable Energy
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jo.v7i2.1735

Abstract

Cumulative fluid production during 2009 - 2021 in the Betung Field, which is the research location and is located in the Jambi sub-basin-South Sumatra Basin (Barber et al., 2005), amounted to 277,923.52 MBbl. The relationship between porosity and permeability can be said in general that if the porosity is greater, the permeability will be greater, but in reality it will be found that certain layers will have large porosity but small permeability, such as in layers containing clay or shale. Mineralogical composition plays an important role, especially with regard to clays, involving several compositions including illite, smectite, kaolinite and chlorite. The presence of quartz and feldspar increases permeability, while clay minerals and calcite tend to have the opposite effect (Jose M. Carcione et al., 2019). The analysis carried out included XRD analysis to determine the mineral composition of the reservoir sandstone of the Airbenakat formation, rock quality analysis (porosity and permeability), well log analysis and then the overall analysis results were linked to production data. Based on XRD analysis, petrophysical analysis of wells 209 and 217 in the Betung field, Airbenakat formation, Jambi sub-basin, South Sumatra basin, the results of XRD and petrophysical analysis show the presence of clay content consisting of Kaolinite, Illite, Smectite and Chlorite which has an influence on reservoir quality, especially permeability, where the greater the clay content, the more obstructed fluid flow is. 
Analysis Of Co2 Storage in A Saline Aquifer Using A Fully Implicit Integrated Network Modeling Approach in the 'AZ' Field Swadesi, Boni; Zayd, Ahmad; Buntoro, Aris; Kristanto, Dedi; Widiyaningsih, Indah; Lukmana, Allen Haryanto
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.25106

Abstract

The increasing carbon dioxide (CO2) emissions from industrial and energy activities have driven the development of Carbon Capture and Storage (CCS) technology as a key solution for climate change mitigation. Among various geological storage options, saline aquifers offer significant advantages due to their large storage capacity, wide distribution, independence from hydrocarbon value, and stable geological and geochemical conditions. The “AZ” Field, located near a power plant emitting 2.2 million tons of CO2 annually, was selected as the study site for CO2 storage. This study aims to analyze the trapping mechanisms and optimize the CO2 storage capacity (storativity) using a fully implicit integrated modeling approach. The methodology involves building a static and dynamic model of the Johansen Formation saline aquifer, and integrating well and surface facility models using the well designer and network designer features in tNavigator. A 140-year simulation was conducted, comprising 40 years of injection and 100 years of post-injection period. Simulation results show that the “AZ” Field can store up to 83.9 Mt of CO2, predominantly through solubility/residual trapping mechanisms, in addition to structural trapping. No leakage was observed to the surface, indicating that caprock integrity remained intact throughout the simulation period. The fully implicit integrated modeling approach effectively captured the dynamic interactions between the reservoir, wells, and surface facilities, supporting the feasibility of the “AZ” Field as a safe and sustainable CO2 storage site.
Evaluation of Drill Bits Use in KRS-09 Well, Kuarsa Field Based on Well Log Data, XRD Testing and MBT From Drill Cuttings Alfatah, Faritsi Luqman; Buntoro, Aris; Swadesi, Boni; Hartoyo, Puji; Putradianto, Ristiyan Ragil
Journal of Petroleum and Geothermal Technology Vol. 6 No. 2 (2025): November
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v6i2.14876

Abstract

The use of drill bits in well drilling is very important to break and penetrate rocks. The selection of drill bits is usually done by testing drill bits from previous wells that have similar static rock mechanical parameters, but this method is time consuming and expensive because the core must be analyzed in the laboratory. As an alternative, the selection of drill bits is evaluated using logging data as an approach to calculating the Unconfined Compressive Strength (UCS) value whose accuracy is improved by integrated the brittleness index through X-Ray Diffraction (XRD) analysis and Mechanical Specific Energy (MSE) parameter to assess how efficiently drilling is performed. The obtained parameter data is then calculated for correlation using Pearson correlation. Integration of rock mechanical (UCS, BI, MSE) and mineralogy has proven to be more effective in selecting drill bits than experience-based methods. Therefore, drilling planning should consider rock strength, deformation properties, and mineral composition to improve drill bit efficiency and life.
Caprock Integrity Assessment from Core-Based Formation Analysis and Laboratory Workflow: A Case Study of The Asri Basin Caprock Buntoro, Aris; Putra, Teddy Eka; Kristanto, Dedi; Swadesi, Boni; Amir, Zulhemi; Lukmana, Allen Haryanto; Wicaksono, Dimas Suryo; Nurcholis, Muhammad
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2021

Abstract

Caprock integrity is a critical factor in ensuring the long-term safety of CO₂ geological storage, enhanced oil recovery (EOR), and wellbore stability. This study investigates the sealing performance of shale- and carbonate-rich caprock intervals from the Asri Basin, with specific focus on the Baturaja and Gita Formations. This study introduces a CT-guided integrated laboratory workflow for caprock integrity assessment, which simultaneously links petrophysical sealing capacity, mineralogical controls, and geomechanical strength within a unified experimental framework, a workflow rarely applied in Southeast Asian basins. Whole-core sections from Well ASR-1 were screened using computed tomography (CT) imaging to identify fractures and heterogeneity prior to plug extraction. Laboratory methods included porosity and permeability determination under variable confining stresses, mercury injection capillary pressure (MICP) analysis to evaluate sealing capacity, mineralogical characterization by X-ray diffraction (XRD), scanning electron microscopy (SEM–EDS), petrography, and mechanical testing (UCS, triaxial, and Brazilian tensile tests). The results demonstrate significant depth-dependent variability: The Baturaja Formation exhibited heterogeneous sealing capacity, with entry pressures ranging from 217 to 1,197 psi, while the Gita Formation consistently displayed strong sealing, with maximum Pc_entry of 2,844 psi and pore systems dominated by <0.1 µm throats. Mechanical tests confirmed adequate strength and the preservation of low permeability under confining stress, with clay content and carbonate cementation identified as primary controls on integrity. The integrated workflow enables a process-based interpretation of lithology-controlled sealing mechanisms, improving the robustness of site selection and risk assessment for CO₂ storage in the Asri Basin and similar carbonate and mudstone systems.
Co-Authors Aisyah Indah Irmaya Alfatah, Faritsi Luqman Amir, Zulhemi BASUKI RAHMAD Boni Swadesi Hartoyo, Puji Kristanto, Dedi Kristanto, Dedy lukmana, allen haryanto Nurcholis, Muhammad Putra, Teddy Eka Putradianto, Ristiyan Ragil Siregar, Anggi Deliana Wicaksono, Dimas Suryo Zayd, Ahmad