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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 12 Documents
 1   2 
Search results for , issue "Vol 47 No 3 (2024)" : 12 Documents clear
Impact Of Various Biodiesel And Partially Hydrogenated Biodiesel Mixtures On Torque, Power, And Specific Fuel Consumption: An Experimental Study With Mathematical Modelling I Ketut Gede Wirawan; I Nyoman Prayana Trisna
Scientific Contributions Oil and Gas Vol 47 No 3 (2024)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.47.3.1681

Abstract

The widespread reliance on diesel fuel for transportation and industrial applications necessitates exploring better alternatives. Biodiesel, either alone or in combination with partially hydrogenated biodiesel, presents a potential substitute for conventional diesel fuel. This research investigates the effects of incorporating biodiesel or partially hydrogenated biodiesel into diesel fuel on torque, power, and specific fuel consumption (SFC). The experiments incorporated seven mixtures of diesel fuel, varying from 100% diesel fuel to only 70% diesel fuel. The findings indicate that both biodiesel and partially hydrogenated biodiesel improve power, torque, and SFC compared to conventional diesel fuel, across various ratios and engine rotation. Optimal performance of these biodiesel blends is achieved around 2000 rpm. Additionally, the study developed mathematical models to predict torque and power, which were optimized for use at engine speeds of 2000 rpm and 4000 rpm, with biodiesel concentrations ranging from 10% to 30% in the fuel mixture.
The Effect of Co2-Brine-Rock Interaction Towards Sand Onset Modeling in Dolomite-Rich Sandstone: A Case Study in Air Benakat Formation, South Sumatera, Indonesia Prasandi Abdul Aziz; Bagus Endar Bachtiar Nurhandoko; Taufan Marhaendrajana; Utjok W.R. Siagian; Tutuka Ariadji
Scientific Contributions Oil and Gas Vol 47 No 3 (2024)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.47.3.1682

Abstract

Carbon Capture Utilization Storage (CCUS) into geological storage (e.g., Enhanced Oil or Gas Recovery) provides a solution to reduce CO2 emissions yet remains a potential operational problem, such as sand problem phenomena in producer well. This study performs several experimental works (i.e., time-lapse dry mass measurements, , X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and elastic wave measurements) by using CO2-brine-rock batch experimental setup to observe mineral dissolution, pore structures alteration as well as rock physics alteration due to CO2-brine-rock interactions.This study used an outcrop sample of dolomite-rich sandstone from Air Benakat formation, South Sumatera, Indonesia. Our experimental works observed dolomite dissolution, secondary porosity development as well as rock strength reduction indirectly due to CO2-brine-rock interactions. The results of elastic wave velocity measurements (i.e. P & S waves) were then used to modify a considerable sand onset prediction model. Thus, the modified model demonstrates that considering CO2-brine-rock interactions could help to design better sand management strategy in producer well.

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