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All Journal The Eastasouth Journal of Information System and Computer Science Jurnal Geosaintek
Fatahillah, Ahmad Dzikra
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Computer Science & IT Earth & Planetary Sciences

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KARAKTERISASI RESERVOIR KARBONAT MENGGUNAKAN INVERSI IMPEDANSI AKUSTIK BLOK ‘X’, FORMASI TUBAN, CEKUNGAN JAWA TIMUR Juventa, Juventa; Bobbybuana, Ahmad Fakhri; MZ, Nasri; Herawan, Fitriyanda; Fatahillah, Ahmad Dzikra
Jurnal Geosaintek Vol. 8 No. 1 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Carbonate reservoirs are usually difficult to map and identify in seismic sections due to their complex structure and diagenetic material with high heterogeneity. The East Java Basin is a perfect example of these complex carbonate structures with excellent hydrocarbon accumulation. In order to obtain a better characterization of the carbonate reservoir in this basin, acoustic impedance inversion is performed in here. Acoustic impedance is a product of seismic P wave velocity and density, where velocity and density are properties commonly used to describe rocks in a reservoir. Based on the sensitivity analysis results, the sensitive parameters to describe the reservoir are acoustic impedance, porosity, sonic, and density. Inversion results showed the range of acoustic impedance values in the Tuban Formation between 23000 – 50000 (ft/s).(g/cc) and porosity transformation results showed a value range of 8 – 22%. Depth structure map, acoustic impedance and porosity section slices showed the distribution pattern of reservoir zones lying in the West - Southwest direction with high structural elevations or located on the top structure reservoir carbonate at a depth of 2500 meters below the surface
Analysis of Upstream Cloud Technology Acceptance at Pertamina Hulu Energi Regional 4 Fatahillah, Ahmad Dzikra; Noviaristanti, Siska; Awaluddin, Muhammad
The Eastasouth Journal of Information System and Computer Science Vol. 3 No. 01 (2025): The Eastasouth Journal of Information System and Computer Science (ESISCS)
Publisher : Eastasouth Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/esiscs.v3i01.654

Abstract

This study aims to analyze the factors influencing the acceptance of Upstream Cloud technology at PT Pertamina Hulu Energi Regional 4. Upstream Cloud is part of the company's digital transformation strategy, expected to improve operational efficiency and competitiveness in the oil and gas industry. Using the Technology Acceptance Model (TAM) approach, this research examines the influence of Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Confidence Level of Users (CL), and Cost Effectiveness (CE) on the level of technology acceptance within the organization. The research was conducted through a survey involving employees of PT Pertamina Hulu Energi Regional 4, with data analyzed using inferential statistical methods to determine the relationships and the magnitude of influence of each variable. The results indicate that PU has a positive and significant effect of 33.3%, PEOU of 9.2%, CL of 39.1%, and CE of 14.9% on technology acceptance. Simultaneously, these four variables contribute a total of 96.5% to the acceptance of Upstream Cloud technology. These findings have important strategic implications for the company, including the need to enhance user competence and confidence through technical training and mentoring, intensify communication regarding the tangible benefits of cloud technology, and strengthen technical support. Additionally, although PEOU has a relatively small influence, ensuring ease of use remains essential to minimize adoption barriers, particularly for non-technical users. Regular evaluations of the technology's effectiveness are also recommended to adapt to the dynamic operational needs and technological advancements in the oil and gas industry.
Co-Authors Bobbybuana, Ahmad Fakhri Herawan, Fitriyanda Juventa, Juventa Muhammad Awaluddin, Muhammad Mz, Nasri Siska Noviaristanti