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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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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.
Pelatihan Statistik untuk Penilaian Berbagai Aset Properti Termasuk Migas bagi Karyawan KJPP di DKI Jakarta Prima, Andry; Rosyidan, Cahaya; Satiyawira, Bayu; Samsol, Samsol; Koesmawardani, Wildan Tri; Renanda, Raka Ilham
Jurnal Abdi Masyarakat Indonesia Vol 4 No 4 (2024): JAMSI - Juli 2024
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.1246

Abstract

Pelatihan statistik bagi karyawan KJPP di Jakarta Selatan bertujuan untuk meningkatkan pemahaman dan keterampilan dalam penggunaan statistik, khususnya dalam penilaian properti migas. Pelatihan ini diikuti oleh 30 personel yang diukur keterampilan statistiknya melalui kuesioner sebelum dan sesudah pelatihan. Metode pelatihan berupa kuliah dan pendampingan dengan materi pelatihan mencakup teori dasar hingga aplikasi lanjutan statistik yang disajikan melalui presentasi dan studi kasus. Setelah dilakukan pendampingan, hasil analisis data menunjukkan peningkatan signifikan dalam pemahaman dan keterampilan statistik peserta setelah pelatihan. Peserta yang awalnya tidak memahami konsep statistik dasar kini mampu menerapkannya dalam pekerjaan sehari-hari, terutama dalam penilaian properti migas. Pembahasan juga mengidentifikasi berbagai aspek pelatihan yang dianggap paling bermanfaat oleh peserta, seperti pendekatan praktis dan studi kasus relevan. Saran untuk perbaikan di masa mendatang mencakup perpanjangan durasi pelatihan dan pengulangan berkala untuk mempertahankan keterampilan yang telah diperoleh. Kesimpulan menunjukkan bahwa pelatihan ini sangat efektif dan lebih dari 90% peserta menyatakan bahwa pelatihan ini bermanfaat dalam meningkatkan kompetensi mereka. Pelatihan semacam ini direkomendasikan untuk dilaksanakan secara berkala guna terus meningkatkan kompetensi personel KJPP dalam penilaian properti, terutama dalam sektor migas.
The Determination of Kesongo Mud Volcano System Zone Using Seismic Interval Velocity at Potential Overpressure in The Tawun Formation, F Field, NE Java Basin Burhannudinnur*, Muhammad; Koesmawardani, Wildan Tri
Aceh International Journal of Science and Technology Vol 10, No 3 (2021): December 2021
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.10.3.23649

Abstract

The Mud Volcano System (SMV) is an interesting topic, especially the relatively shallow oil and gas basin in North East Java. The Tawun Formation is an alternating layer of claystone that is quite thick. It has been confirmed in several oil and gas fields as a potential layer of a mud volcano system, specifically the Kesongo Mud Volcano System. The existence of this system is a challenge to further exploration; therefore, zoning is essential. The data used in this research were interval velocity cubes which were re-picked in each of the two bin sizes (2x25m) as the primary data. The well and velocity data were performed to determine the deviation from the Normal Compaction Trend (NCT). Furthermore, the seismic interval was confirmed with drilling data such as mud log and mud weight. The value of preliminary pore pressure was also derived from interval velocity using Eaton Equation which is confirmed by mud weight data. The Zoning of the Mud Volcano System was carried out via a depth slice at 3D seismic intervals. The results showed that the Tawun Formation has a Mud Volcano System prone zone at a depth of 204 m and decreases in geometry as the depth increases. Meanwhile, the OP-1 zone was the safest zone for exploration, followed by OP-2 but requires passage through the Kesongo Mud Volcano System zone of 1000 m thickness.
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.
KARAKTERISTIK REKAHAN ALAMI, STUDI KASUS MODEL SINGKAPAN DIGITAL (DOM) BATUAN GRANITIK DI MUARO SILOKEK, SUMATERA BARAT Koesmawardani, Wildan Tri; Nurshal, M.E. Marshal; Sapiie, Benyamin; Rudyawan, Alfend
Bulletin of Geology Vol 3 No 3 (2019): Bulletin of Geology
Publisher : Fakultas Ilmu dan Teknologi Kebumian (FITB), Institut Teknologi Bandung (ITB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/bull.geol.2019.3.3.1

Abstract

Digital Outcrop Model (DOM) is a method of building a more realistic, 3D-based geocellular model based on photogrammetric data. DOM can describe position of fractures with a minimum length of four meters, so it can describe better distribution and fracture geometry with more precision. DOM used has a dimension of 320 m × 12 m at fractured granitic rock outcrops at Muaro Silokek, West Sumatra. There are 1183 fracture interpretations in the DOM. Based on the fracture orientation scattered in the DOM, there are four segmentation structures with three domain orientation directions, north north west - south southeast (NNE-SSW), northeast - southwest (NE-SW), and east-northeast - west southwest (ENE-WSW). The results of kinematic analysis of the structural data show that the Muaro Silokek area is affected by the strike slip fault with the northwest-southeast direction (NW_SE) which is parallel with orientation of the Takung Fault. Fracture density analysis in DOM was carried out by grid method with grid dimensions of 20 m × 20 m resulting in a value range of 0.15 - 1 fracture/m2. From the results of the fracture density analysis, the kinematic analysis can be carried out to determine the minor fault orientation. Fracture density is strongly influenced by the distance to fault and has logarithmic distribution data with a high correlation coefficient R2 = 0.98.
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