Vol. 49 No. 3 (2026)

Articles

• Numerical Sensitivity Analysis of Matrix Permeabilityand Parent–Child Well Interaction on Estimated Ultimate Recoveryin Unconventional Reservoirs

  Dike F Putra, Ichsan A. Lukman, M Haidar Putra, Fiki Hidayat, Muhammad Ariyon

  1-40

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• Effect of Corn Cob Addition on the Rheological and Filtration Properties of Water Based Drilling Mud

  Apriandi Rizkina Rangga Wastu, Ridha husla, Ghanima Yasmianiar, Asri Nugrahanti, Venezia Chelsea Reggiana Kalalo, R Hari Karyadi Oetomo, Siti Azizah

  41-52

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• Optimizing CO₂ Storage in Saline Aquifers Through Pressure Redistribution in Natuna D-Alpha Field, Indonesia

  Roihan Arie Nirwana, Dedy Irawan, Amega Yasutra, Syarif Kamal, Welly Ahmad Ramadan

  53-66

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• Full Tensor Gravity Gradiometry Sensitivity Analysis for Delineating Lateral Reservoir Boundaries and Subtle Density Contrasts

  Krisna Oka Mahendra, Muhammad Noor Amin bin Zakariah, Soni Satiawan, Boko Nurdiyanto Suwardi, Edy Widjanarko

  67-87

• Rheological Screening of HPAM for High-Salinity EOR

  Esraa Osama, Adel M. Salem, Ahmed Alsabagh, Omar Elfarouk, Mahmoud Tantawy, Muhammad Saafan

  89-109

• Lithofacies Versus Well Identity as Controls on Fracture Porosity in Malay Basin Carbonates: A Two-Scale Statistical Decomposition

  Simeao Lourenco Correia da Silva, Muhammad Luqman Hasan, Dejen Teklu Asfha, Krisna Oka Mahendra

  111-131

• Unsupervised Machine Learning for Reservoir Rock Type Classification in the Ngimbang Formation, Northeast Java Basin, Indonesia

  Elizia Da Costa Alves, A.K.M. Eahsanul Haque, M. Azuwan B. Maoinser

  133-151

• Determination of An Appropriate Method and Economic Cost Estimation for Plug and Abandonment of H-11 Well in The Tambun Field

  Luky Agung Yusgiantoro, Dedi Kristanto, Dimas Suryo Wicaksono, Karina Larasati, Vania Raina Stephanie, Gondo Irawan

  153-168

• A Practical Integrated Workflow for Well Candidate Selection in Mature Oil Fields Using Well Opportunity Index and Delta Potential

  Amega Yasutra, Adam Muhammad

  169-184

• Comparative Analysis of B35–B40 Biodiesel Blends in Passenger Train Generator Sets: Performance, Emissions, and 1,200 h Endurance Tests

  Riva Yudha Abriyant, Naufal Rasendriya Azmi, Irawan Adhi Putra, Faqih Supriyadi, Yogi Pramudito, Dimaz Warahadi, Riesta Anggarani, Eki Dwi Wijanarko, Cahyo Setyo Wibowo, Ahmad Syihan Auzani

  185-205

• Mitigating Sulfate-Reducing Bacteria in Produced Water: Performance of MB-X Biocide Assessed by SRB‑BART at a Mature Onshore Asset PERFORMANCE OF MB-X BIOCIDE

  Erik Indra Putra, Maulana Hardi, Oktaviani Kusuma Wardani

  207-219

• Shallow Gas: From Hazard to Prospect, Prediction of Reservoir Porosity Distribution Based on Log and Seismic Data Analysis

  Anton Hilman Saputra, Abdul Haris

  221-236

• Effect of Cone Design on the Structural Integrity Assessment of an Oil and Gas Conical Perforated Strainer Using CFD-Coupled Finite Element Analysis

  Mohd Azni Md Kasim, Mohd Azahari Razali, Nur Syafiqah Adha Narrudin, Norfakhira Mohd Nor, Iman Fitri Ismail, Masataro Suzuki, Amnur Akhyan

  237-259

• Influence of Expanded-Air Fraction on Product Distribution and Energy Performance of Turboexpander and Joule–Thomson Refrigeration Systems in Double-Column Cryogenic Air Separation Units

  Ratri Puspita Wardani, Mohammad Irwan Fatkhur Rozy, Amani Salsabil Husodo, Alifah Nur Aini Fajrin, Fitria Dwi Andriani, Kharin Nova Ledya Rezkirana, Siti Fatimatus Zahro

  261-279