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All Journal Petro : Jurnal Ilmiah Teknik Perminyakan Journal of Earth Energy Science, Engineering, and Technology Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
Rian Cahya Rohmana
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science

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STUDI POTENSI PLTS ATAP DI MAKASSAR UNTUK MENINGKATKAN PENGGUNAAN ENERGI TERBARUKAN DAN MENGURANGI EMISI KARBON Octavia, Dea; Arvandhi Hutama; Divtara Tampoy; Rian Cahya Rohmana
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 12 No. 4 (2023): DESEMBER
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v12i4.18281

Abstract

Indonesia is located below the equator and has high exposure to sunlight throughout the year, providing great potential for generating electrical energy from solar sources. The demand for electrical energy in Indonesia continues to increase every year, so that it is very important to take advantage of the abundant potential of solar energy to become a source of renewable energy for power generation. This study focuses on analyzing the potential and effectiveness of using solar power and the challenges in its use, especially in the Makassar area. Solar power can generate up to 112,000 GWp of electricity or the equivalent of 89,600,000 MW. One of the challenges faced in using solar panels is the high material and installation costs, as well as people's dependence on conventional electricity. The Indonesian government has set a target to obtain 23% of the total electricity capacity from renewable energy sources by 2025. One solution is to use a rooftop solar system which can directly convert solar radiation into electrical energy. The energy generated from the Rooftop PLTS system can be stored in a battery that is controlled by a regulator and used at night. The use of on-grid PLTS or Rooftop PLTS can provide the advantage of saving PLN's electricity by 39.9% to 110.5%. It can be concluded that using energy from solar panels in a month can produce carbon gas emissions by 3.3% or carbon gas emissions are reduced by up to 96.7%.
DEPOSITIONAL PROCESSES AND FACIES ARCHITECTURE OF BALIKPAPAN SANDSTONE FORMATION, APPLICATION OF 3D DIGITAL OUTCORP MODEL (DOM) TO IDENTIFY RESERVOIR GEOMETRY AND DISTRIBUTION IN DELTAIC SYSTEM Rian Cahya Rohmana; Iqbal Fardiansyah; Leon Taufani; Dicky Harishidayat
Scientific Contributions Oil and Gas Vol. 42 No. 1 (2019): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.42.1.177

Abstract

In recent years, digitalization of the outcrop technique is a powerful tool - for detailed analysis on the geo-software. Thus, the integration between outcrops and subsurface data for reducing the subsurface uncertainties. This provides the impetus to propose and accomplish a holistic understanding of the architecture and geometry of the deltaic system and to provide an exhaustive analysis of their sedimentary processes. This study investigates the temporal and spatial distribution of deltaic sandstone using a combination of 3D Digital Outcrop Model (DOM) application and traditional geologic mapping of Balikpapan Formation in the Kutei Basin. Our study has successfully revealed that DOM is an excellent method to better understand the depositional process and facies architecture within the heterogeneity of deltaic system. The classification scheme presented in this study is also applicable to other sedimentological settings worldwide.
Uncovering The Potential of Low Resistivity Reservoirs Through Integrated Analysis: A Case Study from The Talang Akar Formation in The South Sumatra Basin Fiqya Fairuz Zaemi; Rian Cahya Rohmana; Widi Atmoko
Scientific Contributions Oil and Gas Vol. 45 No. 3 (2022): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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The study area is an oil and gas field that has a low resistivity reservoir zone in the Talang Akar Formation, South Sumatera Basin. The reservoir zone is composed of siltstone and sandstone that was deposited in a shallow to transitional marine environment. The aim of this study is to identify and determine the potential of low resistivity reservoirs in the study formation. The data used in the study include well log, mud log, core data (porosity, permeability, petrography), formation water analysis, and biostratigraphy. The methodology includes qualitative analysis to determine reservoir potential zones (quick look interpretation) and the reason for low resistivity reservoirs, as well as quantitative analysis to calculate petrophysical parameters. The results of the quick look analysis showed 77 low resistivity reservoir zones, but the petrophysical analysis identified 25 low resistivity reservoir zones as potential candidates for drill steam test (DST). Factors causing low resistivity reservoirs in the study area include clay mineral content (kaolinite and illite), conductive minerals (pyrite and siderite), high salinity formation water (>10,000 ppm), very fine to medium sand grain size (0.063 - 0.5 mm) distribution of clay minerals (laminated and dispersed clay), and thin laminates. The results of the petrophysical analysis show that shale volume is less than 30%, porosity is greater than 14%, permeability is greater than 10 mD, and water saturation is less than 70%.
Karakteristik dan Indeks Kualitas Reservoar Hidrokarbon Menggunakan Metode Pemetaan Digital pada Formasi Ngrayong, Cekungan Jawa Timur Utara Rian Cahya Rohmana; Iqbal Fardiansyah; Leon Taufani; Dicky Harishidayat
Lembaran Publikasi Minyak dan Gas Bumi Vol. 55 No. 3 (2021): LPMGB
Publisher : BBPMGB LEMIGAS

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Abstract

Pemetaan digital dapat menghasilkan analogi digital dari singkapan sebagai representasi dan gambaran kondisi bawah permukaan pada daerah yang memiliki kesamaan karakteristik geologi. Penerapan metode ini memungkinkan interpretasi dan pengukuran fitur geologi secara digital untuk keperluan karakterisasi reservoar hidrokarbon. Selain itu, metode ini tidak memerlukan biaya tinggi seperti akuisisi seismik atau wireline logging, schingga eksplorasi hidrokarbon, khususnya untuk mengetahui karakter reservoar jauh lebih mudah dan murah. Penelitian ini dilakukan di wilayah Desa Binangun, Kabupaten Tuban, Jawa Timur, karena memiliki penyebaran Formasi Ngrayong yang cukup baik. Tujuan penelitian ini adalah memetakan secara digital singkapan batuan untuk memberikan gambaran awal karakteristik reservoar serta menghitung reservoar quality index (RQI). Metode pemetaan digital ini menggunakan kamera digital, quadcopter drone, dan perangkat global positioning system. Integrasi data pemetaan digital menghasilkan model fasies, properti (porositas dan permeabilitas), serta model RQI. Berdasarkan model RQI didapatkan tiga potential flow units, yakni high quality (porositas 25-35%, permeabilitas >500 mD), medium - high quality (porositas 27 - 30%, permeabilitas 90 - 500 mD) dan medium quality (porositas 24 - 33%, permeabilitas 85-95 mD). Metode pemetaan digital berhasil menggambarkan karakterisasi reservoar dan memberikan informasi lebih banyak pada daerah yang sedikit ataupun tidak memiliki data bawah permukaan, serta dapat mengurangi resiko dan ketidakpastian di bawah permukaan.
ANALISIS PENYEBAB RESERVOIR RESISTIVITAS RENDAH PADA LAPISAN BATUPASIR FORMASI TALANG AKAR CEKUNGAN SUNDA ASRI DAN SUMATERA SELATAN Octavia, Dea; Rian Cahya Rohmana; Widi Atmoko
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 13 No. 2 (2024): Juni 2024
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v13i2.19686

Abstract

This research area is an oil and gas field characterized by low-resistivity zones in the Talang Akar Formation of the Sunda Asri and South Sumatra basins. The formation's lithology comprises sandstone, claystone, shale, and interspersed limestone, all deposited in a shallow marine environment. The objective of conducting petrophysical analysis is to identify the potential of the formation, particularly its low-resistivity reservoirs. The research utilizes well log, core, mud log, petrography, X-ray diffraction (XRD), and biostratigraphy data. Analysis of these data yields Gamma Ray logs, Resistivity logs, and Porosity logs, which include neutron log porosity (NPHI) and density porosity (RHOB). Several factors contribute to the low resistivity of reservoirs in this area, including the presence of clay minerals like kaolinite, chlorite, and illite in the Talang Akar formation, which interfere with low resistivity readings. The occurrence of conductive minerals such as pyrite, biotite, and tourmaline, the high salinity of formation water (>10,000 ppm), classified as High Saline Water, the fine to medium grain size of the sand (0.063 – 0.5 mm) which can retain formation water (irreducible water), leading to low resistivity readings, and the thickness of the rock layers, as evidenced by the depositional environment of the Talang Akar Formation, ranging from the upper delta plains to the lower delta plains, are also influential factors.
Production Optimization using Nodal Analysis in Redesigning SRP on Well “MEI” South Sumatera Field Rian Cahya Rohmana; Dewantoro, Rochvi Agus; Safitri, Mairani Ananda
Journal of Earth Energy Science, Engineering, and Technology Vol. 8 No. 1 (2025): JEESET VOL. 8 NO. 1 2025
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/kp5q3q77

Abstract

South Sumatera field has a Well “MEI” produced using an artificial lift system of the sucker rod pump, currently producing 100 bfpd. The main purpose of this research is to optimize the pump by redesigning it. The methods used are determining the maximum production rate using the Fetkovich IPR method, evaluating the installed pump to obtain its efficiency volumetric value, and redesigning the pump using nodal analysis by adjusting the stroke length and stroke per minute. Evaluation shows the pump efficiency volumetrics value is 53%, which means the pump is not working optimally. The well's flow rate can still be improved, so a redesign will be conducted to optimize the well production. After the redesign, with a stroke length of 54 inches and a stroke per minute of 6.8 rpm, the well's flow rate increased from 100 bfpd to 164 bfpd, and the volumetric efficiency increased by 92%. This research provides an overview of the effectiveness of redesigning SRP by adjusting stroke length and stroke per minute to improve the pump performance and production rate.
Co-Authors Arvandhi Hutama Dewantoro, Rochvi Agus Dicky Harishidayat Divtara Tampoy Fiqya Fairuz Zaemi Iqbal Fardiansyah Leon Taufani Octavia, Dea Safitri, Mairani Ananda Widi Atmoko