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All Journal Jurnal Pengabdian Masyarakat dan Riset Pendidikan Scientific Contribution Oil and Gas
Ramdhan
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Humanities Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Mathematics Other

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In Situ Stress and Stress Regime in the Onshore Part of the Northeast Java Basin Agus M; Ramdhan
Scientific Contributions Oil and Gas Vol. 44 No. 2 (2021): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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Abstract

In situ stress is importance in the petroleum industry because it will significantly enhance our understanding of present-day deformation in a sedimentary basin. The Northeast Java Basin is an example of a tectonically active basin in Indonesia. However, the in situ stress in this basin is still little known. This study attempts to analyze the regional in situ stress (i.e., vertical stress, minimum and maximum horizontal stresses) magnitude and orientation, and stress regime in the onshore part of the Northeast Java Basin based on twelve wells data, consist of density log, direct/indirect pressure test, and leak-off test (LOT) data. The magnitude of vertical ( and minimum horizontal ( stresses were determined using density log and LOT data, respectively. Meanwhile, the orientation of maximum horizontal stress ( was determined using image log data, while its magnitude was determined based on pore pressure, mudweight, and the vertical and minimum horizontal stresses. The stress regime was simply analyzed based on the magnitude of in situ stress using Anderson’s faulting theory. The results show that the vertical stress ( ) in wells that experienced less erosion can be determined using the following equation: , where is in psi, and z is in ft. However, wells that experienced severe erosion have vertical stress gradients higher than one psi/ft ( . The minimum horizontal stress ( ) in the hydrostatic zone can be estimated as, while in the overpressured zone, . The maximum horizontal stress ( ) in the shallow and deep hydrostatic zones can be estimated using equations: and , respectively. While in the overpressured zone, . The orientation of is ~NE-SW, with a strike-slip faulting stress regime.
Workshop Pemanfaatan Quizizz dalam Pembelajaran Matematika di Sekolah Astuti; Zulfah; Rahma Yenni; Ramdhan; Siti Rohani
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 3 No. 3 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 3 Nomor 3 (Januari 202
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v3i3.368

Abstract

The Workshop on Using Quizizz in Mathematics Learning in Schools aims to introduce and train educators in using the Quizizz platform as an innovative and interactive learning tool. By using Quizizz, teachers can design interesting, game-based quizzes to increase student motivation and engagement in mathematics learning. This workshop discusses effective ways to integrate Quizizz in various mathematics topics, as well as providing examples of applying quizzes for basic to advanced material. Apart from that, participants are also taught about analyzing quiz results to assess student understanding and design appropriate follow-up. Through this training, it is hoped that teachers can optimize the use of technology in the classroom, enrich students' learning experiences, and create a fun and interactive learning atmosphere.
Co-Authors Agus M Astuti Rahma Yenni Siti Rohani ZULFAH