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All Journal Jurnal Abdi Masyarakat Indonesia Journal of Geoscience Engineering and Energy (JOGEE) Aceh International Journal of Science and Technology Bulletin of Geology
Koesmawardani, Wildan Tri
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Journal : Journal of Geoscience Engineering and Energy (JOGEE)

 1 
ANALISIS LINGKUNGAN PENGENDAPAN PADA LAPANGAN AR & RB FORMASI TALANG AKAR, CEKUNGAN SUMATRA SELATAN : ANALYSIS OF DEPOSIT ENVIRONMENT IN AR & RB FIELDS OF THE TALANG AKAR FORMATION, SOUTH SUMATRA Bramantyo, Andreas Rendy; Burhannudinnur, Muhammad; Koesmawardani, Wildan Tri
Journal of Geoscience Engineering and Energy VOLUME 4, NOMOR 2, AGUSTUS 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jogee.v4i2.16008

Abstract

Penelitian ini dilakukan pada lapangan AR & RB, formasi Talang Akar, Cekungan Sumatra Selatan. Dimana formasi Talang Akar ini memiliki potensi yang sangat besar dalam memiliki kandungan minyak bumi dan gas di Cekungan Sumatra Selatan ini, namun tidak semudah itu untuk menemukan minyak dan gas, perlu dilakukan analisis yang mendalam dalam melakukan eksplorasi. Salah satu analisis yaitu analisis lingkungan pengendapan. Dalam melakukan analisis ini menggunakan software petrel 2017. Berdasarkan hasil dari pengolahan data menghasilkan bahwa lapangan AR & RB terbentuk pada lingkungan pengendapan fluvial, delta plain dan delta front. Pembagian sekuen pada lapangan ARB terbagi menjadi 3 dan memiliki fasies yaitu flooding surface 1 terdapat fasies fluvial channel, point bar, creavase splay dan floodplain, flooding surface 2 terdapat fasies distributary channel, mouth bar dan mud flat dan flooding surface 3 terdapat fasies mouth bar dan mud flat. This research was conducted in field AR & RB, Talang Akar formation, South Sumatra Basin. Where the Talang Akar formation has enormous potential in containing oil and gas in the South Sumatra Basin, but did not find it to find oil and gas, in-depth analysis is needed to carry out exploration. One of the analyzes is the analysis of the depotitional environment. In conducting this analysis using petrel 2017 software. Based on the results of data processing, it was found that the AR & RB field was formed in a fluvial, delta plain and delta front environment. Sequence distribution in field ARB is divided into 3 and has facies, namely flooding surface 1 which has fluvial channel, point bar, creavase splay and floodplain facies, flooding surface 2 has distributed channel facies, mouth bar and mud flat and flooding surface 3 has mouth bar and mud flat facies.
OPTIMASI LOG DATA UNTUK ANALISIS PETROFISIKA DI LAPANGAN JGA, FORMASI BEKASAP, CEKUNGAN SUMATRA TENGAH: OPTIMIZATION OF LOG DATA FOR PETROPHYSICAL ANALYSIS IN THE JGA FIELD, BEKASAP FORMATION, CENTRAL SUMATRA BASIN Gabrielle, Juan; Herdiansyah, Firman; Koesmawardani, Wildan Tri
Journal of Geoscience Engineering and Energy VOLUME 6, NOMOR 1, FEBRUARI 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jogee.v6i1.22191

Abstract

Penelitian ini bertujuan untuk meningkatkan akurasi analisis petrofisika melalui normalisasi gamma ray, penanganan badhole, dan koreksi densitas. Data logging sering menghadapi tantangan kualitas akibat deformasi lubang bor, variasi alat ukur, dan efek lingkungan. Hasil penelitian menunjukkan bahwa normalisasi gamma ray efektif dalam menghilangkan variasi alat ukur, sementara penanganan badhole memastikan koreksi data logging pada area dengan deformasi. Koreksi densitas juga memberikan hasil yang lebih representatif terkait sifat asli batuan. Pendekatan ini diharapkan dapat meningkatkan keandalan analisis petrofisika untuk mendukung pengelolaan reservoir hidrokarbon. This study aims to enhance the accuracy of petrophysical analysis through gamma ray normalization, badhole handling, and density correction. Data logging often faces quality challenges due to borehole deformation, measurement tool variations, and environmental effects. The results demonstrate that gamma ray normalization effectively eliminates measurement tool variations, while badhole handling ensures corrected logging data in deformed areas. Density correction provides more representative results related to the actual rock properties. This approach is expected to improve the reliability of petrophysical analysis in supporting hydrocarbon reservoir management.
KARAKTERISTIK ALTERASI SKARN DAN DISTRIBUSI MINERAL SULFIDA PEMBAWA TEMBAGA DI TAMBANG BIG GOSSAN LEVEL 2860L-2940L FOOTWALL WEST, PAPUA, INDONESIA: CHARACTERISTICS OF SKARN ALTERATION AND SULPHIDE MINERAL BEARING COPPER DISTRIBUTION AT BIG GOSSAN MINE 2860L-2940L FOOTWALL WEST, PAPUA, INDONESIA Amalina, Nur; Meirawaty, Mira; Sonbait, Daniel; Burhannudinnur, Muhammad; Hafiz, Surya Darma; Rendy; Koesmawardani, Wildan Tri; Wijaya, Budi
Journal of Geoscience Engineering and Energy VOLUME 6, NOMOR 1, FEBRUARI 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jogee.v6i1.22289

Abstract

Tambang Big Gossan di Papua Tengah dikenal dengan mineralisasi tembaga yang terbentuk akibat intrusi diorit pada batuan karbonatan Formasi Waripi. Penelitian ini bertujuan menganalisis karakteristik alterasi dan mineralisasi tembaga di level 2860, 2900, dan 2940 Footwall West. Metode yang digunakan termasuk pemetaan geologi dan analisis laboratorium (petrografi, mineragrafi, dan XRD). Hasilnya, ditemukan empat satuan litologi serta lima zona alterasi, yaitu klinopiroksen-garnet-kuarsa, epidot-klorit-kuarsa-kalsit, garnet-kuarsa-kalsit-piro pilit-epidot, piropilit-kuarsa-kalsit, dan aktinolit-kuarsa-klorit. Mineral sulfida tembaga utama adalah kalkopirit dan bornit, dengan pirit, pyrrhotite, dan magnetit sebagai mineral pembawa besi. Tembaga terakumulasi pada zona retrograde alterasi 2, 3, 4, dan 5. The Big Gossan mine in Central Papua is known for its copper mineralization, formed due to diorite intrusion into the carbonate rocks of the Waripi Formation. This study aims to analyze the characteristics of alteration and copper mineralization at levels 2860, 2900, and 2940 Footwall West. The methods used include geological mapping and laboratory analyses (petrography, mineragraphy, and XRD). The results revealed four lithological units and five alteration zones: clinopyroxene-garnet-quartz, epidote-chlorite-quartz-calcite, garnet-quartz-calcite-pyrophyllite-epidote, pyrophyllite-quartz-calcite, and actinolite-quartz-chlorite. The main copper sulfide minerals are chalcopyrite and bornite, with pyrite, pyrrhotite, and magnetite as iron-bearing minerals. Copper is concentrated in the retrograde alteration zones 2, 3, 4, and 5.
Co-Authors Andry Prima Bayu Satiyawira Benyamin Benyamin, Benyamin Benyamin Sapiie Bramantyo, Andreas Rendy Budi Wijaya Burhannudinnur*, Muhammad Cahaya Rosyidan Cahyaningratri Prima Riyandhani Firman Herdiansyah, Firman Gabrielle, Juan Hafiz, Surya Darma Maulana, Galang Fahmi Meirawaty, Mira Mohammad Apriniyadi Muhammad Burhannudinnur Nur Amalina Nurshal, M.E. Marshal Renanda, Raka Ilham Rendy Rudyawan, Alfend Samsol Sonbait, Daniel