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Journal of Petroleum and Geothermal Technology
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 27230988     EISSN : 27231496     DOI : https://doi.org/10.31315/jpgt.v1i1
Core Subject : Science, Engineering,
Earth & Planetary Sciences Energy Engineering
Journal of Petroleum and Geothermal Technology (JPGT) is a journal managed by Petroleum Engineering Department, Universitas Pembangunan Nasional "Veteran" Yogyakarta. This Journal focuses on the petroleum and geothermal engineering including; reservoir engineering, drilling engineering and production engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 95 Documents
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Laboratory Study Of A Suitable Demulsifier For Implementation In Ramba Field Rahmat Ernowo; Nur Suhascaryo
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16218

Abstract

This study was conducted to identify the optimal demulsifier composition capable of breaking water-in-oil (W/O) emulsion found in the production fluid at the Ramba Gathering Station (with a water-to-oil ratio of 60:40). Initial effectiveness was evaluated on seven single active agents across three types (water drop, interface, and clear water) to select the best agent from each category. The selected active agents were then blended to produce eight new demulsifier compositions (RE-1 to RE-4), by varying the component percentages, including a variation with the addition of 5% acid to assess its synergistic effect on emulsion separation performance. The tests were performed using the standard bottle test method with a demulsifier injection dosage of 200 ppm and heated at 40°. The main focus of the test was to compare the degree of emulsion destabilization, the quality of the oil-water interface formed, and the clarity of the separated water phase. The performance of the demulsifier compositions (RE-1 to RE-4) was directly compared against the same versions formulated with 5% acid, as well as against a control sample (Blank) without chemical treatment. Observation results consistently showed that the addition of 5% acid significantly enhanced the emulsion breaking performance across all composition samples. The acid-enhanced demulsifiers (RE-1 to RE-4) produced an oil-water interface that was far more stable, distinct, and easier to observe, and resulted in a clearer water phase compared to formulations without the 5% acid addition. The improved water clarity indicates a much more effective coalescence and settling process. Overall, this study concludes that the addition of 5% acid proved to be a crucial factor in improving demulsifier effectiveness and optimizing production fluid processing at the Ramba field.
Evaluation of Electrical Submersible Pump (ESP) Based on Energy Loss Analysis At South-Eeast Sumatra (SES) Block Andika Rizky Febrianto; Suranto; KRT Nur Suhascaryo; Muhammad Nauval Rizki; Riko Meidiya Putra; Slamet Kurniansyah
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16402

Abstract

The production wells in the South-East Sumatra (SES) Block are characterized as a mature field with a high water cut, requiring significant energy to lift fluids to the surface. The main challenge faced is the high energy inefficiency of the Electrical Submersible Pump (ESP). Therefore, this study aims to evaluate ESP performance based on energy loss analysis, determine the best optimization scenario to reduce energy requirements, and analyze potential operational cost savings. The research method involves evaluating the distribution of energy losses in hydraulic components (friction, backpressure, and pumps) and electrical components (motor, cables, and surface equipment). Based on this evaluation, three optimization scenarios were conducted: backpressure loss, frictional loss, and pump loss. Furthermore, a cost savings analysis is carried out by comparing the costs before and after optimization. The results indicate that energy inefficiency in high flow rates wells is dominated by backpressure and friction, while in relatively small flow rates wells is caused by low pump efficiency and backpressure. The application of the best optimization scenario in the five wells can reduce the total energy requirement from 768.83 kW to 568.21 kW. This resulted in a cost reduction from US$512,641 to US$378,869.
Fatigue-Related Cognitive Performance in Oil and Gas Operations A Review from an Applied Data Science Perspective Hidayah Nurul Hasanah Zen; Ridho Rahmadi; Zaenal Abidin; Allen Haryanto Lukmana
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16467

Abstract

Fatigue and environmental stressors are critical contributors to reduced concentration and safety risks among onshore and offshore oil and gas engineers. This review aims to synthesize existing research on the detection of reduced concentration levels related to fatigue and environmental factors, comparing onshore and offshore working conditions. Furthermore, this review suggests practical solutions for industry application. In this study, a structured literature review was conducted using quantitative, qualitative, and technology-based studies addressing fatigue detection, management strategies, and psychosocial and organizational risk factors across diverse operational contexts. The results indicate that offshore engineers experience higher fatigue prevalence due to shift work, isolation, and harsh environmental conditions, while onshore engineers are more affected by occupational monotony and limited social support. The reviewed studies indicate that fatigue detection approaches commonly combine subjective self-reports with physiological and performance-based indicators; however, their validation and standardization remain limited. Multidimensional interventions integrating sleep management, mental health support, and organizational reforms show potential but lack robust empirical evaluation. In conclusion, the review highlights the need for standardized, integrative fatigue assessment frameworks and context-specific fatigue risk management strategies to improve cognitive performance, safety, and well-being in both onshore and offshore oil and gas operations.
Impact of Reservoir Horizontal Permeability Vertical Distribution on Recovery Efficiency Based on Deepwater Massive Sands Azman Munthoha Maula; Tsani Sabila; Putri Agustryani; Friska Hasugian; Dwi Miftha Kurnia; Randy Yusuf Kurniawan; Rozi Afdi
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16798

Abstract

The influence of Deep-Water Massive Sands (DWMS) internal architecture on hydrocarbon recovery remains an area of ambiguity. This research endeavor aimed to elucidate the bed-scale ramifications of the vertical distribution of horizontal permeability, as determined from documented DWMS outcrop sedimentological analyses, on hydrocarbon recovery and sweep efficiency. This was achieved through the application of numerical waterflood simulations. Model construction leveraged outcrop textural parameters, including grain size, sorting, and orientation, in conjunction with analogous turbidite petrophysical subsurface data. The observed outcomes from four simulated heterogeneous cases revealed distinct trends in recovery efficiency, with variations up to 10%. These trends were attributable to the efficiency of water sweep and the interactive effects of vertical permeability heterogeneity, gravitational forces, and viscous forces. Specifically, the most stable, piston-like water sweep efficiency was associated with coarsening-upward permeability trends, followed by intermediate sweep efficiencies in anomalous and ungraded DWMS trends, and finally, the most unstable sweep efficiency in idealized trends.
Evaluation of Sucker Rod Pump Performance for Well X in the Y Field Delfi Imelia Pitri; Samuel Roniasi Silitonga
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16891

Abstract

Natural decline in reservoir pressure often causes oil wells to lose their natural flow capability, necessitating the implementation of artificial lift methods to maintain economic production levels. This study focuses on evaluating the performance of a Sucker Rod Pump (SRP) unit in Well X. Also known as beam pumping, the SRP is the oldest and most widely used artificial lift method for extracting oil from reservoirs with insufficient natural pressure. Well X exhibits a Productivity Index of 1.41 bpd/psi with a maximum flow rate of 574.082 bpd; therefore, an evaluation was conducted to determine the pump's volumetric efficiency. Currently, Well X has a total flow rate of 90 bfpd. A well is considered efficient if the volumetric efficiency of the installed pump exceeds 70%. If the efficiency falls below this threshold, optimization is required to achieve optimal performance. The evaluation results show a volumetric efficiency of 42.99%, indicating that the pump operation in this well is not yet efficient.

Page 10 of 10 | Total Record : 95

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