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All Journal Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK) Scientific Contributions Oil and Gas
Widi Atmoko
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy

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INTERPRETASI SEISMIK DALAM MENENTUKAN ZONA POTENSIAL HIDROKARBON DI FORMASI JATIBARANG DAN TALANGAKAR, SUB-CEKUNGAN JATIBARANG, CEKUNGAN JAWA BARAT UTARA Ilham Nur E.N Iskandar; Rian Cahya Rohmana; Widi Atmoko
Prosiding TAU SNARS-TEK Seminar Nasional Rekayasa dan Teknologi Vol. 1 No. 1 (2019): Prosiding TAU SNAR-TEK Seminar Nasional Rekayasa dan Teknologi 2019
Publisher : Fakultas Teknik dan Teknologi - TANRI ABENG UNIVERSITY

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Abstract

Sub-Cekungan Jatibarang berada di Timut-Laut Cekungan Jawa Barat Utara yang memiliki cadangan hidrokarbon yang baik dan didukung oleh adanya petroleum system yang menjadikan cekungan ini sangat potensial. Reservoir pada Sub-cekungan Jatibarang yakni batulempung pada Formasi Jatibarang, batupasir pada Formasi Talangakar, batugamping pada Formasi Baturaja, batupasir dan batugamping pada Formasi Cibulakan Atas dan batugamping pada Formasi Parigi. Penelitian ini akan mecari zona potensial hidrokarbon, khususnya di Formasi Talangakar dan Formasi Jatibarang dengan menggunakan data seismik. Dalam menentukan zona potensial hidrokarbon dilakukan beberapa tahapan yakni interpretasi seismik seperti well seismik tie, picking top formation and picking fault, time and depth structure map. Penelitian ini menggunakan 14 data seismik 2D dan didukung oleh 11 data log sumur. Hasil dari interpretasi seismik pada daerah telitian, didapatkan 4 zona hidrokarbon potensial. Zona TA-1, TA-2 dan TA-3 berada di Formasi Talang Akar dan Zona VC-2 berada di Formasi Jatibarang.
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)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.45.3.1258

Abstract

The study area is an oil and gas field that has a low resistivity reservoir zone in the Talang AkarFormation, South Sumatera Basin. The reservoir zone is composed of siltstone and sandstone that was depositedin a shallow to transitional marine environment. The aim of this study is to identify and determine the potential oflow 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 includesqualitative analysis to determine reservoir potential zones (quick look interpretation) and the reason for low resistivityreservoirs, as well as quantitative analysis to calculate petrophysical parameters. The results of the quicklook analysis showed 77 low resistivity reservoir zones, but the petrophysical analysis identified 25 low resistivityreservoir zones as potential candidates for drill steam test (DST). Factors causing low resistivity reservoirs inthe study area include clay mineral content (kaolinite and illite), conductive minerals (pyrite and siderite), highsalinity formation water (>10,000 ppm), very fine to medium sand grain size (0.063 - 0.5 mm) distribution ofclay minerals (laminated and dispersed clay), and thin laminates. The results of the petrophysical analysis showthat shale volume is less than 30%, porosity is greater than 14%, permeability is greater than 10 mD, and watersaturation is less than 70%.
Seismic-Based Reservoir Characterization of The Lower Arang Formation in West Natuna Basin Using Acoustic Impedance Inversion and Seismic Attributes Hakim Afif Putra; Edi Sanjaya; Suwondo; Muhammad Nafian; Praditiyo Riyadi; Widi Atmoko
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2065

Abstract

Reservoir characterization is a critical stage in hydrocarbon potential evaluation, particularly for heterogeneous sandstone reservoirs. This study aims to characterize the reservoir of the Lower Arang Formation in the West Natuna Basin using acoustic impedance inversion and seismic attributes. The dataset consists of seismic data and well log data that have been integrated through a well–seismic tie to ensure consistency between time and depth domains. Acoustic impedance inversion was applied to obtain the subsurface impedance distribution, which was then analyzed together with seismic attributes to identify lithological variations and reservoir property indications. The results indicate that zones with relatively low acoustic impedance values correlate well with porous sandstone intervals within the Lower Arang Formation. The integration of inversion results and seismic attributes enhances the delineation of lateral reservoir distribution and supports a more reliable reservoir characterization. This approach provides an effective workflow for reservoir evaluation in clastic systems with similar geological characteristics.
Co-Authors Edi Sanjaya Fiqya Fairuz Zaemi Hakim Afif Putra Ilham Nur E.N Iskandar Muhammad Nafian Praditiyo Riyadi Rohmana, Rian Cahya Suwondo