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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 27 Documents
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Search results for , issue "Vol 48 No 2 (2025)" : 27 Documents clear
The Influence of Fluid Dynamics on Physical Uncertainties of Hydrocarbon Reservoir Imam Setiaji Ronoatmojo; Muhammad Burhannudinnur; Yarra Sutadiwiria; Dewi Syavitri; Grace Stephani
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1761

Abstract

Uncertainty is often present in the relationship between physical property variables and the complexity increases, when mechanical properties are included. The problems becomes more interesting in cases, where fluid dynamics act as the primary contributing factor. Pore pressure changes is the main actor of every uncertainty of physical properties. Therefore, this study aimed to examine the influence of fluid dynamics on physical uncertainties of hydrocarbon reservoir. To achieve this objective, well data from production and enhanced oil recovery (EOR) operations between 1994 to 2007 were entangled. Specifically, 3D seismic data was incorporated to distribute physical and mechanical properties after well periodization. In this study, the impact of pore pressure changes on minimum horizontal stress from 1994-2017 was also examined. The results showed that changes in porosity were not significant, but variations in bulk modulus and Poisson's ratio remained observable. Furthermore, tensors field were not dominated by vertical stress, instead of horizontal stresses. Changes in pore pressure apparently had a significant impact on minimum horizontal stress. The increase of  minimum horizontal stress reached approximately one third of pore pressure change. Consequently, the stress regime transitioned from the strike-slip fault in 1994 to thrust fault in 2017, emphasizing a significant increase in the influence of horizontal stress. While water injection and oil production did not lead to significant changes in physical properties, the effects were evident in the variations of Poisson's ratio.
Scenario-Based Evaluation of Economic Feasibility and Risk in City Gas Networks: A Case Study From East Java, Indonesia Deddy Tricahyo Utomo; Cindy Dianita
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1766

Abstract

This study aims to evaluate the economic feasibility and develop optimization scenarios for a natural gas distribution network intended for household use. The case study employs existing gas pricing and consumption data from East Java Province to support realistic economic modeling. The analysis examines how three important factors the number of customers, the price of gas, and how much gas is used affect key economic measures: net present value (NPV), internal rate of return (IRR), payback period (PP), and benefit-cost ratio (BCR). The research methodology includes secondary data collection, simulation of six different scenarios, and sensitivity analysis to examine the critical factors influencing project viability. Simulation results indicate that the scenario assuming a 25% increase in both gas selling price and gas consumption yields the most favorable economic performance, with an IRR of 14.21% and a payback period of less than seven years. The novelty of this study lies in its integrated use of scenario-based economic modeling, sensitivity analysis, and international benchmarking with comparable industries. Unlike conventional feasibility studies that focus solely on regional expansion, this research underscores the strategic role of pricing and consumption patterns as key determinants of financial sustainability in residential gas networks. The findings from the sensitivity analysis reveal that gas selling price has the most significant impact on economic performance, followed by gas consumption rate. These insights reinforce the importance of pricing adjustments and consumption optimization in enhancing the financial and operational sustainability of natural gas distribution networks. The study concludes with strategic recommendations for operators and policymakers to advance efficient and resilient gas-based energy infrastructure.
Characterization of Resin-Coated Silica Sand from Tibawan Rokan Hulu for Potential Use as Proppant Novrianti Novrianti; Novia Rita; Budi Prayitno; M. Faruq; Ilham Arif
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1767

Abstract

This study is aiming to evaluate the properties of quartz sand in Tibawan, Rokan Hulu in order to determine its suitability as proppant material for the oil and gas industries. The evaluation of these materials is being carried out based on the guidelines of American Petroleum Institute (API) 19C criteria, specifically assessing sphericity, roundness, bulk density, turbidity, acid solubility, and crush resistance. Furthermore, a surface modification process is being carried out where the sand is being coated with epoxy resin in three different weight variants (6 grams, 9 grams, and 12 grams) to investigate the effect of this treatment on the material's physical and mechanical characteristics. The test results are confirming that the sample covered with 12 grams of epoxy resin (Sample 4) passed all API 19C specifications. In contrast, other samples are showing weaknesses in one or more parameters considered. The sample 4 is showing a value of 0.62 roughness, 0.85 sphericity, 1 turbidity, 0.91 g/cm³ bulk density, 2.5 percentage acid soluble, and 6.05 percentage mass loss at a pressure of 7000 psi. These observations are indicating the potential of Tibawan quartz sand, modified by epoxy resin, as a non-conventional proppant that is being used in the hydraulic fracturing of upstream oil and gas activities.
Bio-Sorbent Optimisation Through Chemical Activation in The Processing of Waste Water in The Oil and Gas Sector Rika Lala Saputri; Muhammad Khairul Afdhol; Tomi Erfando; Fiki Hidayat; Razif Muhammed Nordin
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1769

Abstract

The oil and gas industry is renowned for producing water that posed significant threat to the environment, making its management a significant concern. Therefore, the purpose of this research is to evaluate the efficiency of different bio-sorbents in purifying treated wastewater. The bio-sorbents used were derived from cashew shells (KMR), jenitri fruit (JNT), and walnuts (WN). This led to the introduction of a new method, which combined different chemical activations with various bio-sorbents, alongside characterization and filtration performance evaluations. This resulted in high-performance bio-sorbents for produced water treatment. Additionally, the methods adopted include adsorbent preparation, characterization (bulk density, FTIR, SEM), and filtration testing for turbidity and TDS parameters. The results showed that chemical activation significantly enhanced adsorbent performance, with candlenut shell + zinc chloride (KMR+ZC) and jenitri + potassium hydroxide (JNT+K) exhibiting the best adsorption capacity. Bulk density analysis showed a decrease in value after chemical activation, showing increased porosity. Meanwhile, FTIR characterization confirmed changes in functional groups after activation, with SEM showing structure modifications that improved adsorption surface area. Filtration tests showed that the modified adsorbents had better capacity in reducing turbidity and TDS in treated water.
The Performance of Sulfamic, Acetic, and Citric Acid as An Alternative Carbonate Scale Dissolution at Laboratory Scale Meyliana Wulandari; Verawati Verawati; Isalmi Aziz; Nofrizal Nofrizal; Rachmi Kartini; Pandian Bothi Raja
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1770

Abstract

Calcium carbonate scale is being considered one of the challenges being faced by the oil and gas industry, as it is disrupting production activities. Acidification using hydrochloric acid is being widely applied as a scale remover; however, this reagent is being recognized as highly corrosive. Hence, this study is aiming to investigate the effect of combining sulfamic acid, citric acid, and acetic acid in ratios of 9:3:3, 6:6:3, and 3:9:3 at temperatures of 35°, 45°, and 50 °C on an environmentally friendly scale dissolution.The percentage of scale dissolution from the three acids is being compared with 5, 10, and 15% hydrochloric acid at temperatures of 35°, 45°, and 50°C using the gravimetric method. The results of the study on a laboratory scale are showing that the largest percentage scale solubility is being obtained with a ratio of sulfamic acid: citric acid: acetic acid of 9:3:3 of 65.79% at a temperature of 50°C. When compared with 5% HCl at 50°C as a control, scale dissolution is reaching 63.49%.This result is being supported by scanning electron microscope data, which are showing that the surface of the scale on the pipe after treatment with three acid combinations is having a smoother surface morphology compared to using commercial scale removal (HCl). The use of three acid combinations in this study is serving as an alternative to commercial-scale removal.
Development and Fabrication of a Pressure Swing Adsorption System Using Molecular Sieve 13X for Integrated CO₂ Capture and Electrochemical Conversion Mitra Eviani; Tirto Prakoso; Dadan Kusdiana; Pramujo Widiatmoko; Ida Bagus Oka Lyong Budhatama; Setyo Yanus Sasongko; Aryan Fathoni Amri; Wibawa Hendra Saputera; Hary Devianto
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1772

Abstract

This study focuses on the development and performance evaluation of a Pressure Swing Adsorption (PSA) system utilizing molecular sieve Zeolite 13X for CO2 capture. A fixed-bed reactor was designed and simulated with Aspen Adsorption to optimise adsorption conditions. The system, tested with a 24.75 L/min gas feed (10% CO2, 90% N2) at 30 °C and 6 bar, operated cyclically every 7 minutes. Simulation results recommended a reactor volume of 4.9 L (ID 102 mm × T/T 600 mm). Sensitivity analysis showed that adsorption capacity declined as CO2 concentration increased, with CO2 uptake decreasing from 24.75 L/min at 10%-mol to 8.44 L/min at 70%-mol. Key design parameters such as feed flow rate, intraparticle voids, bulk density, and particle size were also evaluated. A prototype was built based on simulation results and tested, achieving a 120 s breakthrough time and an optimal 60 s swing interval over 17 cycles. This work supports the future integration of PSA-based CO2 capture with electrochemical CO2 reduction (ECO2R).
Telisa Formation Characterization Using Seismic Acoustic Impedance Inversion in the Akasia Area of the Central Sumatra Basin Rose Firdiany Nur Sukma; Mohammad Syamsu Rosid; Edy Wijanarko
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1774

Abstract

The Menggala, Bekasap, and Bangko formations are the main reservoirs in many productive oil fields in the Central Sumatra Basin. However, these three formations have been extensively explored and exploited, leading to high water saturation. Meanwhile, the Telisa Formation presents an opportunity for further exploration, as studies characterizing its gas reservoir in the Central Sumatra Basin remain relatively limited. This study aims to determine the characteristics of the Telisa Formation in the Akasia Area, Central Sumatra Basin, as part of a preliminary oil and gas exploration effort. The Telisa Formation in this area is a target zone for gas reservoir characterization studies. P-impedance parameters from acoustic impedance (AI) inversion analysis are used to identify rock lithology and fluid content. The AI inversion results indicate two lithology types—shale and sandy shale—confirmed through well data. High P-impedance values, ranging from 23,000 to 27,000 (ft/s)(g/cc), are identified as shale, while sandy shale exhibits lower P-impedance values, ranging from 12,500 to 22,000 (ft/s)(g/cc). Based on well-log analysis and seismic inversion, indications of hydrocarbons in the Telisa Formation of the Akasia Area are minimal or absent. The P-impedance transformation results show that the porosity distribution in the Telisa Formation is predominantly low, with slight variations in moderate porosity, ranging from 0.02 to 0.40 v/v, classifying it as poor to good porosity.
Experimental Study of Oil and Gas Pressure Vessel Welding Using The Shielded Metal Arc Welding Process Ayende Ayende; Moch. Bagus Bahtiar; Haidar Kotrisna; Septia Damayanti; Rizky Dwi Santoso; Muhammad Bagas A. P.
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1775

Abstract

Oil and gas pressure vessels operating at a pressure of 100 psi or higher generally use base materials with a minimum tensile strength of 400 N/mm². The fabrication of these vessels using welding methods must ensure that the weld joint achieves a minimum tensile strength equal to or greater than 400 N/mm² while maintaining good ductility. Experimental study is conducted to evaluate the effectiveness of the Shielded Metal Arc Welding (SMAW) process in meeting these requirements. The investigation aims to determine whether the selected welding parameters could produce weld joints with the necessary tensile strength and ductility. The base metal material specification used is SA 36 with a thickness of 8 mm. The weld joint uses a single V groove type, and the filler metal specification for the SMAW process is A5.1 with an AWS E7018 classification and a wire diameter of 3.2 mm. The welding machine is set with a current range of 90 A - 170 A and a voltage range of 16 volts - 25 volts. A total of six welding specimens were prepared for mechanical testing. Acceptance criteria for the test results are based on ASME Section IX standards. The tensile test results for two weld specimens showed ultimate tensile strengths of 495.98 N/mm² and 497.41 N/mm2. The root and face bend test results showed no open defects exceeding the criteria set by the ASME IX standard. The hardness test results show relatively uniform values. The microscopy examination showed a grain profile predominantly composed of ferrite structures. Based on these results, the SMAW process, when applied with the selected parameters, proves to be a suitable method for welding oil and gas pressure vessels.
Advancing Shale Gas Recovery with Microwave Heating: A Study of Frequency, Time, and Thermal Effects in Reservoir Stimulation Dike F Putra; Novi Lestari Yuliani; Neneng Purnamawati; Novrianti Novrianti; Mohd Zaidi Jaafar
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1776

Abstract

The advancement of unconventional hydrocarbon reservoirs, especially shale gas, has revolutionized energy production, offering a cleaner alternative to traditional fossil fuels. Despite its potential, shale gas extraction faces significant challenges due to the ultra-low permeability of formations, complex pore structures, and issues like water blocking caused by hydraulic fracturing fluids. This study explores the innovative application of microwave heating (MWH) as a Formation Heat Treatment (FHT) technique to mitigate these challenges and enhance shale gas recovery. Microwave heating operates by converting electromagnetic energy into heat, leveraging the dielectric properties of reservoir materials to generate rapid, uniform, and volumetric heating. Numerical simulations were conducted to evaluate the effectiveness of MWH under varying frequencies (915 MHz, 2450 MHz, and 5800 MHz), focusing on temperature distribution, water volume reduction, and gas production. Results demonstrate that higher microwave frequencies, particularly 5800 MHz, lead to significant temperature increases, effective water vaporization, and permeability improvements. This process facilitates gas desorption from the shale matrix, enhances diffusion, and improves cumulative gas recovery. The study highlights the environmental advantages of MWH, including reduced water usage and avoidance of groundwater contamination, positioning it as a sustainable alternative to traditional hydraulic fracturing. Furthermore, insights into shale reservoirs' thermal and electromagnetic properties are provided, offering guidance for optimizing MWH application in field conditions. This research underscores the potential of MWH to address critical operational challenges in unconventional reservoirs, paving the way for its integration into advanced shale gas recovery strategies.
Green Surfactant: Synthesis of Sulfonate Surfactants Using Strecker Modification Techniques and Surfactant Formulation for Chemical Enhanced Oil Recovery (Ceor) Applications Ilham ardatul putra; Yudha Taufantri; Yani F. Alli; Dadan Damayandri; Yohanes B.D. Wangge; Didin Mujahidin
Scientific Contributions Oil and Gas Vol 48 No 2 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i2.1779

Abstract

Despite the continuing development of sustainable sources of energy, crude oil and natural gas resources remain crucial elements of the international economy. With global petroleum and liquid fuel demand continually increasing, improving the efficiency of extraction from existing natural reserves of petroleum is of utmost importance as the world gradually transitions away from fossil fuels toward more sustainable sources. Toward that end, enhanced oil recovery (EOR) techniques have been developed and are used to minimize the amount of crude oil and petroleum that is left behind in underground reservoirs from conventional drilling extraction methods. In this study, surfactants were synthesized using a fatty acid derived from palm oil as a hydrophobic group and sulfonat as a hydrophilic group. The use of vegetable oil as the raw material is likely due to its abundance and environmentally friendly. Sulfonation of anionic surfactant was performed by utilizing the Strecker modification technique in which an alkali metal bisulfite (versus sulfite) is used to sulfonate the epoxide group. The preferred sulfonating reagent is a mixture of sodium bisulphite and sodium sulfite (1:1; 1:2; 1:2.5) as well as various time reactions. Product surfactant was characterized by thin-layer chromatography (TLC) to determine the optimum condition and reaction conversion. The molecular structure of surfactant was confirmed by 1H NMR. Nonionic surfactant was then analyzed by measuring the interfacial tension (IFT) of oil and water, wettability, and imbibition test. The results showed that the optimum conditions to obtain the hight convertion were achieved by reacting oleil glisidil ether and Sodium Sulfite-Bisulfit at an equivalent mole ratio of 1: 2 and 21 hours’ reaction time. Oleil Glisidil Eter Sulfonat surfactant was able to decrease the IFT of oil and water as 10-2 dyne/cm in brine salinity condition of 18000 ppm and oil 34,39 OAPI. This study also formulated surfactants OGES and OGEP so that the IFT was up to 10-3 and the recovery factor from the imbibition test was up to 75% Rf. The results were then used to design the synthesis of vegetable surfactant oil with various carbon chain lengths and functional groups as an EOR surfactant hydrophobic group.

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