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All Journal Agromet IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Jurnal Teknik Sipil JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) JURNAL TEKNIK HIDRAULIK Indonesian Journal on Geoscience Indonesian Journal on Geoscience Law Development Journal
Lambok M. Hutasoit
Department Of Geology And Department Of Groundwater Engineering, Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Law, Crime, Criminology & Criminal Justice

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Contributions of Loading and Unloading to Overpressure: Analytical Results from The Shelfal Area of The Lower Kutai Basin, Indonesia Agus M. Ramdhan; Lambok M. Hutasoit
Indonesian Journal on Geoscience Vol. 9 No. 1 (2022)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.9.1.1-13

Abstract

DOI:10.17014/ijog.9.1.1-13A modified Bowers Method is applied to analyze the contribution of loading and unloading to total overpressure magnitude in the shelfal area of the Lower Kutai Basin. The method combines Bowers Method with density-sonic cross plots to differentiate contributors to overpressure. This method has a strong physical background, and has proven to give satisfactory overpressure estimation in the studied area. Several processes related to overpressure and compaction in the studied area have also been deduced: 1) top of overpressure is caused by unloading due to gas generation, 2) gas generation on its own can produce overburden-scale overpressure magnitude, 3) loading starts to contribute to overpressure at depth, where the lithology is dominated by mudrocks, 4) effective stress history experienced by mudrocks before unloading, and 5) the presence of two compaction lines and therefore two associated velocity-effective stress relations.
Pore Pressure and Compartmentalization of Carbonate Reservoirs in Northern Madura Platform - East Java Basin, Indonesia Ecep Suryana; Lambok M. Hutasoit; Agus M. Ramdhan; Dwiharso Nugroho; Arifin Arifin
Indonesian Journal on Geoscience Vol. 10 No. 3 (2023)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.10.3.297-307

Abstract

Understanding pore pressure characteristics in carbonate reservoirs is essential, because it concerns all aspects of subsurface, drilling, and occupational safety, as well as the environment in oil and gas exploration and exploitation. In this study, the pore pressure regime and connectivity of the carbonate reservoir (compartmentalization) of Kujung and Ngimbang Formations in the northern Madura Platform of East Java Basin are characterized by utilizing direct pressure data and wireline logs from five wells. The result shows that both hydrostatic and slight overpressure conditions are found in these formations, further indicating the presence of carbonate compartmentalization. The magnitudes of overpressure, however, are mostly very low, with an average of ~37 psi. Four compartmentalized carbonates are identified based on the presence of different pressure gradients in the water leg. The slight overpressure in the carbonates is likely owing to pressure transference from overpressured shale at depth. In addition, by using acoustic impedance from seismic, the depositional environments of the carbonates are interpreted as lagoon and tidal flat. These environments support the occurrence of patch reef carbonate buildups in the Kujung and Ngimbang Formations, which later become a good environment for overpressure generation and carbonate reservoir compartmentalization. Keywords: carbonates, compartmentalization, depositional environment, slight overpressure
Legal Certainty and Reformulation of Regulations on The Granting of Industrial Plantation Forest Management Permits Hutasoit, Matthew Febrian Otniel Lambok; Fahrozi, Muhammad Helmi
Law Development Journal Vol 7, No 4 (2025): December 2025
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/ldj.7.4.731-745

Abstract

This study aims to examine the legal certainty of civil relations between indigenous peoples who hold land rights and holders of Industrial Forest Plantation (HTI) permits in the context of the disharmony between the Basic Agrarian Law and the Forestry Law. The research focuses on the case of the Minister of Forestry Decree No. 346/Menhut-II/2004, which granted a permit to PT Wirakarya Sakti covering an area of ±293,812 hectares in Jambi Province, overlapping with the customary lands of 134 villages and triggering prolonged agrarian conflicts. A normative juridical method was used with a case, legislation, and conceptual approach to analyze the conflict of norms and overlapping authorities. This study identified three main forms of legal uncertainty: the unclear status of land in forest areas, unfair access to resources, and the absence of effective dispute resolution mechanisms. This disharmony is exacerbated by overlapping authorities between the Ministry of Environment and Forestry and the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency, as well as weak verification of land status prior to the issuance of permits. Reformulation of HTI licensing regulations is recommended through institutional harmonization of authority, substantive revision of the Forestry Law, integration of the principles of Free, Prior, and Informed Consent, strengthening of transparency and public participation, and strengthening of evaluation and sanction mechanisms to create fair and sustainable HTI governance.
Co-Authors Abdurrachman Asseggaf Agus H. Harsolumakso Agus Haris Widayat Agus M. Ramdhan Agus M. Ramdhan Agus M. Ramdhan Agus M. Ramdhan Agus M. Ramdhan Agus M. Ramdhan Agus Mochamad Ramdhan Aprisal Aprisal, Aprisal Ardhasena Sopaheluwakan Arifin Arifin Arifin Arifin Arifin Arifin Benyamin Sapiie Delinom, Robert M Denny Akbar Tanjung Dwi Sarah Dwiharso Nugroho, Dwiharso Ecep Suryana Edy Slameto Edy Slameto, Edy Erik Hermawan Fahrozi, Muhammad Helmi Fajar Hendrasto Goulty, Neil R. Hendarmawan Hendarmawan Imam A Sadisun Irwan Iskandar Isril Berd Johannes Hutabarat Jones, Stuart J. Lilik Eko Widodo Mohammad Syaiful Mudrik R. Daryono Mudrik R. Daryono, Mudrik R. Neil R. Goulty Ramdhan, Agus M. Ramdhan, Agus M. Ramdhan, Agus M. Robert M Delinom Rusli HAR Sadisun, Imam A Sarah, Dwi Sena W Reksalegora Slameto, Edy Stuart J. Jones Syahril Badri Kusuma Syaiful, Mohammad Toddy Syaifullah Toddy Syaifullah, Toddy Tri Wahyu Hadi Trinah Wati