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All Journal POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal RISET Geologi dan Pertambangan JGE (Jurnal Geofisika Eksplorasi) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Geosaintek JOURNAL ONLINE OF PHYSICS Jurnal Geocelebes Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Indonesian Physical Review Journal of Engineering and Scientific Research (JESR) Jurnal Geosains dan Remote Sensing (JGRS) Journal of Innovation and Technology Teknika Sains : Jurnal Ilmu Teknik Buguh: Jurnal Pengabdian Kepada Masyarakat Journal of Applied Science, Engineering and Technology (J. ASET) Jurnal Riset Fisika Indonesia JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Seminar Nasional Insinyur Profesional (SNIP) Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Abdimas Multidisiplin Jurnal Teknologi dan Inovasi Industri Jurnal Geosaintek
Wibowo, Rahmat Catur
Jurusan Teknik Geofisika, Fakultas Teknik, Universitas Lampung
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Journal : Journal of Geoscience, Engineering, Environment, and Technology

 1 
Gas Saturated Sandstone Reservoir Modeling Using Bayesian Stochastic Seismic Inversion Rahmat Catur Wibowo; Ditha Arlinsky Ar; Suci Ariska; Muhammad Budisatya Wiranatanagara; Pradityo Riyadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2640.839 KB) | DOI: 10.25299/jgeet.2020.5.1.4503

Abstract

This study has been done to map the distribution of gas saturated sandstone reservoir by using stochastic seismic inversion in the “X” field, Bonaparte basin. Bayesian stochastic inversion seismic method is an inversion method that utilizes the principle of geostatistics so that later it will get a better subsurface picture with high resolution. The stages in conducting this stochastic inversion technique are as follows, (i) sensitivity analysis, (ii) well to seismic tie, (iii) picking horizon, (iv) picking fault, (v) fault modeling, (vi) pillar gridding, ( vii) making time structure maps, (viii) scale up well logs, (ix) trend modeling, (x) variogram analysis, (xi) stochastic seismic inversion (SSI). In the process of well to seismic tie, statistical wavelets are used because they can produce good correlation values. Then, the stochastic seismic inversion results show that the reservoir in the study area is a reservoir with tight sandstone lithology which has a low porosity value and a value of High acoustic impedance ranging from 30,000 to 40,000 ft /s*g/cc.
Identification of Clay Mineral Content Using Spectral Gamma Ray on Y1 Well in Karawang Area, West Java, Indonesia. Rahmat Catur Wibowo; Alia Puja Pertiwi; Suci Kurniati
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 3 (2020): JGEET Vol 05 No 03 : September (2020)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2020.5.3.4504

Abstract

Northwest Java Basin (NWJB) is one of the proven hydrocarbon basins in Indonesia. The scope of this paper will focus onthe shales and sandstone interval within Y1 well in Karawang area, NWJB, Indonesia.A cored interval from Y1 well was chosen for an investigation of the clay minerology for the gamma-ray activity and with the purpose of determining how the Spectral Natural Gamma (SNG) log could be used as an indicator of source rock and reservoir quality. The Th/U as a redox indicator is used to assert that the shales are of anoxic conditions of shallow marine environments. Despite the relatively high insoluble Th values (60-74.15) ppm, the presence of U in substantial amounts, which only occurs in reducing conditions where it is preserved as a lower insoluble valence (U4+) explains for the low Th/U values ranging between (5.8-7.1) ppm/ppm. The overall Th/U value of the evaluated shales remain less than 25, where Th/U <25 is suggestive of marine sediments, whereas Th/U <4 is indicative of marine black shales of reducing conditions. Although no linear relationship was found between clay content and K, Th, or U, the K content characteristic three discrete reservoir characteristic (RC). The RC-I has predicted a matrix-supported texture with the highest K signal, illite and illitised kaolinite are roughly equal in importance as source of K. The RC-II has predicted a grain-supported texture with intermediate K content. K-feldspar, mica and illite as the main sources. The RC-III has predicted have a low K content with grain-supported texture and most of the K is hosted in feldspar. Overall, the laboratory measurements appear to be applicable to the log data, and, using SEM or XRD, the detail facies subdivision can be extended throughout the source rock and reservoir section based on the SNG log.
Analysis of the Surface Subsidence of Porong and Surrounding Area, East Java, Indonesia based on Interferometric Satellite Aperture Radar (InSAR) Data. Indra Arifianto; Rahmat Catur Wibowo
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 4 (2020): JGEET Vol 05 No 04: December 2020
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2020.5.4.5149

Abstract

Since 2006, the mud volcano erupted in the Porong area due to wellbore failure triggered by an earthquake (2006) epicenter in the Jogjakarta area. The mud volcano buried several villages with mud and continued erupted until today. Based on the InSAR data, it can be seen that the subsidence is still happening near the dam area and another area that is not related to mud volcano eruption such as the production of two gas fields in the Porong area. Moreover, the Porong area is flat and low, less than 4 meters above sea level. The analysis shows that the subsidence rate in this area is up to 0.5 m/yr. If this subsidence is continuing, the city can be sinking and flooding during the rainy season. The prediction result from this method is about 10 years more and 36 years since in 2006 based on the mudflow rate method.
Total Organic Carbon (TOC) Value Prediction in Source Rock Potential at North East Java Basin, Indonesia Paulus Leonardo Manurung; Rahmat Catur Wibowo; Ordas Dewanto
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 3 (2021): JGEET Vol 06 No 03 : September (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.3.6644

Abstract

This research aims to determine the potential of the source rock in the Kujung and Cepu Formations in the North East Java Basin, using Total Organic Carbon (TOC). TOC is calculated using the Passey method. The Passey method is used by overlaying the sonic log and the resistivity log and determining the baseline to get the separation of Δlog resistivity, which is then used to predict the TOC log by including the LOM (Level of Organic Maturity) variable obtained from the data of vitrinite reflectance. After the TOC log value is obtained, a correlation is made with the TOC core value. The prediction result of TOC log in a PM-1 well is 2.16%, which means it has excellent quality. The prediction of TOC log in a PM-2 well is worth 2.68%, which means it has excellent quality. The correlation value between the TOC log and the TOC core of the PM-1 well is 0.67, which means the correlation is strong. In PM-2 well, the correlation between the TOC log and TOC core is 0.92, which means that the correlation is robust.
Multiple Linear Regression Method for Thermal Maturity Prediction Based On Well Logs Wibowo, Rahmat Catur; Sarkowi, Muh; Dewanto, Ordas; Mulyatno, Bagus S; Dani, Ilham
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 2 (2024): JGEET Vol 09 No 02 : June (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.2.10270

Abstract

Accurate estimation of thermal maturity is essential in characterizing a source rock, especially using vitrinite reflectance (Ro). The limitations of laboratory data related to the high cost of analysis require a special reliable method to measure the Ro value indirectly in the source rock layer. The proposed method is a continuous prediction of the value of Ro from well logs data using the Multiple Linear Regression (MLR) technique in the Palembang Sub-Basin, South Sumatra Basin. A total of 25 Ro data from 2 wells (RCW-01 and RCW-02) are available from the laboratory's core data analysis results. The Ro data varies from 0.39% to 0.76%, with an average of 0.54%. Prediction of the value of Ro is carried out using the MLR method, which is then carried out training and validation for continuous Ro. The training was carried out using one well (RCW-01) at 2287-3027 m and testing at other intervals (1848-2286 m). The results of the training show an estimation accuracy of R2 0.99, while the test results produce R2 0.81. The MLR formula in the RCW-01 well was then applied to the RCW-02 well for the validation test phase. The well RCW-02 produces a good correlation estimate equal to R2 0.85. Prediction of the value of Ro using the MLR method can be used to evaluate the source rock layer of a sedimentary basin in the form of a continuous interval.
Co-Authors Adelyra, Sabrina Adhani, Alika Tabriza Adhi Wibowo Ahmad Zaelani Ahmad Zaenudin Ahmad Zaenudin Aldika Rizkiano Aldika Rizkiano Alia Puja Pertiwi Alimuddin Muchtar Andika Widyasari ANDRI KURNIAWAN Anggraini, Serly Annur Istikomah Arianto, Khalila Wardah Aryka Claudia Eka Putri Aufar Farrell Khamada Bagus Sapto Mulyanto Bagus Sapto Mulyatno Bagus Sapto Mulyatno Bambang Irawan Bulan, Novita Putri Damayanti, Elok Dani, Ilham Destawan, Ridho Dewi Wijayanti Dewi Wijayanti Diah Ega Safitri Dianti, Amelia Dikpride Despa Ditha Arlinsky Ar Egi Ramdhani Erfani, Sandi Erfani, Sandri Fachri Aldi Pramudya Fatuha, Akmal Alfian Febrina Bunga Tarigan Gaghana, Geo Alfriza Haerudin Halim, Muhammad Rizqi Hanif, Irfan Hayu Nurfaidah Hesti Hesti Hidayatika, Akroma Ignatius Sonny Winardhie Ikram Maulia Imam Fahrur Rozi Indra Arifianto Indragiri, N Muhammad Irma Nurliza Lumbantoruan Isti Nur Kumalasari Istifani Ferucha Istikomah, Annur Iwasaki, Kireina Putri Jochanan Benaya Lumban Tobing Karyanto, Karyanto Karyanto, Karyanto Khansa, M. Roid Billy Khotimah, Ayu Khousnul Kumalasari, Isti Nur Kurniasih, Aulia Lola Anjelika Lumbantoruan, Irma Nurliza Luthfi Rahmawati Mazzaluna, Haidar Prida Meilinda, Alda Mirnawati Mirnawati Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muh Sarkowi Muhammad Budisatya Wiranatanagara Muhammad Budzar Alghifarry Muhammad Sarkowi Mulyanto, Bagus Sapto Mulyatno, Bagus S Mulyatno, Bagus Sapto Nanda Hanyfa Maulida Nandi Haerudin Nandi Haerudin Nasik, Ahmad Nurfaidah, Hayu Nurlaili, Jesica Nurrochman, Arsy Octavia Melani Ordas Dewanto Ordas Dewanto Ordas Dewanto Ordas Dewanto Ordas Dewanto Ordas Dewanto Ordas Dewanto Ordas Dewanto, Ordas Paulus Leonardo Manurung Pradityo Riyadi Pratama, Tectona Putra Epriyan Pujami, Albertus Novridel Rahma Rafi Rilo Pambudi Rahmawati, Luthfi Rahmi Mulyasari RahmiMulyasari, Rahmi Regina Febryzha Sawitri Restu Ningsih Rosa, Winda Aprilia Rustadi Rustadi Sabarila, Marisa Salsabilla, Kharisma Saragih, Yosafat Sari, Okta Mulya Sarkowi, Muhammad Sawitri, Regina Febryzha Siska Erna Sephiana Situmorang, Taruli Suci Ariska Suci Ariska Suci Kurniati Suharno Suharno Suharno Suhayat Minardi Syamsurijal Rasimeng Syuhada, Muhammad Farrel Trias Annisa Fara Triyan, Aldi Muhammad Varenza Novita Yandi Voanda, Dinda Fitri Yandi, Varenza Novita Yazid Pangaloan Lubis Yogi, Ida Bagus Suananda