Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Journal of Metallurgical Engineering and Processing Technology Scientific Contributions Oil and Gas
Ramadhan, Muhammad Redo
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Theoretical approach on characterizing structural and mechanical properties of industrial alloys Ramadhan, Muhammad Redo; Khansa, Salwa Anindhita; Zulindra, Qoriana; Amalia, Dwi; Astuti, Fahmi
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11351

Abstract

With the goal of entering Indonesia’s golden dream 2045 in mineral technology and utilizations, expansive researches covering both experimental and theoretical aspects are urgently required. Here, we provide theoretical study on structural and mechanical properties of various nickel-based alloys based on first-principles, density functional theory (DFT) technique. First, we evaluate the accuracy of several exchange-correlation functionals (LDA-PZ, GGA-PBE, GGA-PBEsol) by comparing the calculated lattice constants for each system with the known experimental results. Based on the best functional, we analyze structural changes caused by the mixture of different atom to the principal element of nickel. Finally, we derived the related mechanical properties for all systems based on the calculated elastic constants. Furthermore, the elastic constants can also be used to predict the stability of alloy structure.
Techno-Economic Design of Onshore Gas Pipelines with High CO₂ and H₂S Content Pamungkas, Joko; Pramadewi , Indrianti; Hermawan, Yulius Deddy; Yuliestyan, Avido; Yusuf, Yusmardhany; Kurniawan, Aditya; Ramadhan, Muhammad Redo; Anggorowati, Heni; Perwitasari; Wulandari, Mutiara; Lazuardi, Muhammad Daffa
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2023

Abstract

This study develops a simulation-based techno-economic framework for designing an onshore gas trunkline system to accommodate production from newly developed wells in the X and Y Fields. The system transports 35 MMSCFD of untreated natural gas containing approximately 60 mol% CO₂ and 70 ppm H₂S, where high acid gas content and declining wellhead pressure impose constraints on pressure delivery, flow velocity, material selection, and lifecycle cost. Steady-state hydraulic simulations were performed using UniSim R490 to evaluate early- and mid-life production scenarios based on pressure drop and erosional velocity ratio (EVR) in accordance with API RP 14E. Comparative analysis of candidate pipeline diameters shows that a 12-inch trunkline maintains a minimum delivery pressure of 50 psig while keeping EVR below unity, thereby satisfying hydraulic and mechanical integrity requirements without excessive recompression. The integration of an onshore booster compressor mitigates reservoir pressure decline and sustains gas transport to the central processing facility. Material selection analysis identifies duplex stainless steel and SS 316 as technically viable options for CO₂-H₂S service under controlled operating conditions. Techno-economic evaluation indicates that the selected configuration minimizes total lifecycle cost relative to alternative designs, with estimated CAPEX of USD 228.43 million and annual OPEX of USD 142.19 million. The results demonstrate that integrated hydraulic optimization, sour-service material selection, and economic assessment provide a robust and economically optimized design approach for onshore sour gas pipeline systems.
Co-Authors Aditya Kurniawan Amalia, Dwi Fahmi Astuti, Fahmi Joko Pamungkas Khansa, Salwa Anindhita Lazuardi, Muhammad Daffa perwitasari Pramadewi , Indrianti Wulandari, Mutiara Yuliestyan, Avido Yulius Deddy Hermawan Yusuf, Yusmardhany Zulindra, Qoriana