Indonesian Journal of Energy and Mineral <p>The aim of Indonesian Journal of Energy &amp; Mineral is to energize the communities by knowledge findings, transfer, and sharing between the scientists, vocational lecturer, and professionals working across energy and mineral field.</p> <p><strong>p-ISSN 2775-5142 e-ISSN 2797-9911</strong></p> Politeknik Energi dan Mineral Akamigas en-US Indonesian Journal of Energy and Mineral 2775-5142 Mechanical Design of Slug Catcher <p>In the upstream oil and gas industry Slug Catcher is a separator to separate heavy liquid hydrocarbons and the gaseous lighter fraction. Slug Catcher is a cylindrical pressure vessel which has a horizontal orientation designed with an internal pressure of 84.37 kg/cm2 , 73,89 °C temperature, 3 mm corrosion allowance, 3,500 mm length, and 1,750 mm diameter. This paper aims to design a Slug Catcher from a mechanical side that is safe and able to withstand the stress caused by internal pressure. General design which includes calculation of thickness of shell, heads, and nozzles, maximum allowable working pressure (MAWP), and minimum design metal temperature (MDMT) using ASME BPVC Section VIII Division 1. Based on the results obtained the nominal shell thickness is 60 mm, head minimum thickness 58 mm, material specification for shell and head is SA 516 Gr 70. In general, the selected material use low carbon steel; flange rating class 600; vessel’s Maximum Allowable Working Pressure is 87.60 kg/cm2 ; hydrostatic test pressure is 113 kg/cm2 .</p> Ayende Mohammad Zafrullah Arsyad Totok Widiyanto Copyright (c) 2021 IJoEM 2021-05-31 2021-05-31 1 1 1 12 10.53026/IJoEM/2021/1.1/12 The Mitigation of CO2 Emissions in the Sea Water Desalination Plant with Reverse Electrodialysis Power Generation <p>Climate change is a major issue that is very interesting to discuss. Climate change is believed to be caused by the greenhouse gas effect. CO<sub>2</sub> is one of the gases that causes the greenhouse gas effect. Therefore, to avoid the dangers of climate change, reducing CO<sub>2</sub> emissions is the main topic in various articles. In this article, CO<sub>2</sub> emission mitigation is analyzed in the sea water desalination plant using reverse electrodialysis power generation. Reverse electrodialysis is a power plant that does not produce CO<sub>2</sub> emissions which converts energy from the difference in salinity of two solutions into electrical energy through selective ion membrane technology. There are 8 sea water desalination (SWD) unit which produces 242 tons/h of clean water for industrial activity and blowdown water of 3,161 tons/h, the blowdown water is wastewater. The SWD unit requires 3.043 tons/h of seawater as feed water, 0.164 MW of electricity and 86 tons/h of steam worth 64.1 MW as an energy. The energy are met from the combined heat and power operation. Combined heat and power require of fuel oil and fuel gas which produce CO<sub>2</sub> emissions of 1,352,445,626 kgCO<sub>2</sub>/y. From the analysis on the SWD plant, the CO<sub>2</sub> emission is 148,411,874 kgCO<sub>2</sub>/y. By implementing reverse electrodialysis power generation, blowdown water at the SWD plant which has a salinity concentration of 680 mol/m<sup>3</sup> can produce electricity of 0.414 MW (3,636 MWh/y). If the electricity generated is used to substitute the electricity needs at the refinery plant, the CO<sub>2 </sub>emissions that can be mitigated is 2,955,915 kgCO<sub>2</sub>/y</p> Suka Handaja Heru Susanto Hermawan Copyright (c) 2021 IJoEM 2021-05-31 2021-05-31 1 1 13 19 10.53026/IJoEM/2021/1.1/13 A Simulation Study of Steamflood Process with Co-Injection of Steam-Carbon Dioxide for Oil Recovery <p>Steamflood as one of thermal EOR method is effective to reduce the amount of oil left in the reservoir by mechanisms such as reducing the viscosity of the oil, oil evaporation, and displacement by steam. In this method, fluid is injected continuously into some injection wells to displace oil and obtain production from other wells. However, there are problems with steamflood process that are still not optimally solved. There is an early channeling of steam under the cap rock to the production well which leads to investigating a solution by co-injecting gases to steamflooding processes. Carbon dioxide is co-injected with steam to form gas-drive so it is expected to be able to add sweep in reservoir and also increase oil in place as gas dissolves in oil. Thermal simulation was carried out in this study using CMG STARS™ reservoir simulator by constructing two kind of injection schemes; steamflood only and steam-CO2 to study the performance of each method. The analysis in this research investigates the effects of steam-gas simultaneous injection in a heavyoil recovery process specifically to the microscopic and macroscopic efficiencies. The sensitivity of some parameters in the simulation including injection rate, steam quality and slug size of gases injected are also evaluated. The result of simulation shows the highest efficiency from field-scale model is obtained from steam-CO2 method. From sensitivity analysis, it is shown that the increase of injection rate and steam quality of gas injected gives the higher recovery, but the oil recovery decreases as the slug size of gas increasing.</p> Pradini Rahalintar Erdila Indriani Copyright (c) 2021 IJoEM 2021-05-31 2021-05-31 1 1 20 27 10.53026/IJoEM/2021/1.1/14 Analysis of Scale Saturation Index (SSI), Scale Formation Rate, and Scale Formation Time Based on Geothermal Production Well Head Pressure at Well "X" <p>Well “X” merupakan salah satu sumur produksi panas bumi yang memproduksikan fluida dua fasa yaitu uap dan brine. Brine inilah yang biasanya membawa zat-zat yang dapat membentuk scale seperti Silica, Calcite dan Sulphide. Scale pada sumur produksi dapat mengurangi produksi secara signifikan karena mampu menghambat aliran fluida di dalam sumur. Hal itulah yang terjadi pada Well “X”. Parameter terpenting dalam pembentukan scale adalah Scale Saturation Index (SSI). Bila SSI &gt; 1, maka fluida dalam kondisi supersaturated dan pengendapan silica dimungkinkan terbentuk. Pembentukan scale akan meningkat seiring dengan penurunan temperatur dan kenaikan pH akibat flashing. Sehingga laju pembentukan scale dan lama waktu pembentukan scale dapat dihitung secara matematis. Data yang diperlukan dalam analisa ini adalah data hasil produksi Well “X” (Output Curve) dan data sampel scale Well “X”. Untuk menghitung SSI dilakukan perbandingan antara konsentrasi silica dalam larutan dengan kelarutan amorphous silica pada kondisi yang sama. Sedang kan untuk menghitung laju pembentukan scale dan lama waktu pembentukan scale adalah densitas silica, kelarutan quartz pada temperatur reservoir, larutan amorf pada temperatur flashing dan salinitas. Dari hasil analisa yang dilakukan didapatkan bahwa endapan silika tidak akan terbentuk pada WHP yang telah digunakan. Apabila dilakukan analisa Trial and Error diantara didapatkan bahwa nilai SSI ? 1 berada pada tekanan 2.3 bar a atau 18.08 psia. fgSedangkan untuk analisa laju dan lama waktu pembentukan scale, pada tekanan WHP 7.81 bar a atau 114.64 psig merupakan yang paling baik karena laju pembentukan scale yang tidak terlalu besar yaitu sekitar 1.56 inch/ tahun dan waktu pembentukan scale sebesar 25% adalah yang lebih lama yaitu 1.12321 tahun.</p> Akhmad Sofyan Hari Sumantri Aka Bambang Yudho Suranta Safira Maura Aldira Ratasya Copyright (c) 2021 IJoEM 2021-05-31 2021-05-31 1 1 28 37 10.53026/IJoEM/2021/1.1/15 Analysis of the Need for Mechanical and Instrumentation Equipment in the Utilization of Gas Wells in Balun Field <p>The utilization of old gas wells in Balun field has the potential to improve the welfare of the people in Cepu District and the surrounding areas in meeting their daily gas needs. However, the challenge of these old unutilized gas wells has risks and impacts on the environment, such as the possibility of gas leak causing fires. This study aimed to analyze the potential of old gas wells and to analyze the impact of risks on the areas around the old gas wells, which will be passed through the gas network, and where the gas processing units will be established. In this analysis, the results of the gas processing process would be distributed to Cepu District to meet household fuel needs. In addition, the use of these old gas wells is also to provide education to students regarding gas processing and distribution. The analysis of the utilization of old gas wells began with mapping of environmental conditions, distribution pipeline systems, and gas processing locations. The mechanical equipment requirements for the model, pipeline design, and processing unit would be presented. Next, the need for the instrumentation system would improve the transmission system and processing unit with reference to ease of operation and safety. In addition, budget requirements and flow diagram were needed to facilitate further programs when building pipelines and the desired gas processing unit</p> Kasturi Hafid Suharyadi Dwi Mulyono Copyright (c) 2021 IJoEM 2021-05-31 2021-05-31 1 1 38 44 10.53026/IJoEM/2021/1.1/16