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All Journal Jurnal Fisika Unand Jurnal Spektra Journal of Physics: Theories and Applications Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika INTEGRITAS : Jurnal Pengabdian BERNAS: Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Community Empowerment and Service
Elistia Liza Namigo, Elistia
Departemen Fisika, Universitas Andalas
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Journal : Jurnal Fisika Unand

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Karakterisasi Reservoar Hidrokarbon Mengunakan Metode Seismik Inversi Deterministik Model Based Pada Lapangan Penobscot Kanada Latifah, Aulia; Pujiastuti, Dwi; Namigo, Elistia Liza
Jurnal Fisika Unand Vol 8 No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.8.2.120-126.2019

Abstract

Telah dilakukan karakterisasi reservoar hidrokarbon pada Lapangan Penobscot Kanada mengunakan metode seismik inversi deterministik model based.  Penelitian ini mengunakan data seismik PSTM (post stack time migration) 3D pada inline 1300 sebagai data input dan data sumur L30 dan B41 sebagai data kontrol.  Karakterisasi reservoar dilakukan dengan melakukan analisis crossplot dan menentukan nilai impedansi akustik atau acoustic impedance (AI).  Analisis crossplot menunjukkan bahwa  log  gamma ray sensitif dalam pemisahan lapisan shale, sandstone, dan limestone. Penentuan zone of interest yang diindikasikan sebagai reservoar hidrokarbon dilakukan melalui analisis atribut dekomposisi spektral dengan frekuensi 10 Hz.  Hal tersebut menunjukkan dengan jelas kemenerusan pola penyebaran litologi yang diduga sebagai hidrokarbon dengan lebih mudah.  Hasil inversi deterministik model based menunjukkan bahwa pada inline 1300 terdapat potensi hidrokarbon melalui sebaran nilai impedansi akustik. Slicing yang dilakukan pada lapisan zone of interest menunjukkan hasil sebaran nilai impedansi akustik dengan rentang 13556-27501(m/s)*(g/cc).  Potensi reservoar hidrokarbon sandstone ditunjukkan melalui zona impedansi akustik pada nilai 20000-25461 (m/s)*(g/cc). Kata kunci: atribut dekomposisi spektral, impedansi akustik, inversi deterministik, model based, zone of interest
Karakterisasi Reservoar Menggunakan Metode Inversi Impedansi Akustik Model Based pada Lapangan “OVI” Cekungan Sumatera Tengah Aisyah, Ovina; Namigo, Elistia Liza; Subhan, Muhammad
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.146-152.2024

Abstract

Telah dilakukan penelitian tentang karakterisasi reservoar menggunakan metode inversi impedansi akustik menggunakan software Hampson-Russel dan Petrel pada Lapangan “OVI” Cekungan Sumatera Tengah Formasi Telisa. Penelitian ini bertujuan untuk memperkirakan karakter fisis reservoar berdasarkan persebaran porositas dan volume shale. Daerah yang berpotensi terhadap hidrokarbon diidentifikasi menggunakan metode inversi impedansi akustik model based. Data yang digunakan adalah data seismik 3D Post-Stack Time Migration (PSTM) dan data tujuh sumur (OV1, OV2, OV5, OV12, OV16, OV31, dan OV32) terdiri dari sonic log, density log, porosity log, dan gamma ray log. Hasil dari inversi model based menujukkan nilai impedansi akustik sand berkisar dari 9,670 ft/s*gr/cc hingga 27,070 ft/s*gr/cc.
Identifikasi Bidang Gelincir Zona Rawan Longsor di Kawasan Wisata Puncak Taruko Kabupaten Agam Menggunakan Metode Geolistrik Resistivitas Fauzana, Husnatul; Namigo, Elistia Liza
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.644-650.2024

Abstract

A research has been conducted to identify the surface of rupture plane in Puncak Taruko area, Agam Regency, West Sumatra Province using 2-dimensional resistivity geoelectric method of Wenner-Schlumberger Configuration. Data collection was carried out on three tracks with track lengths of 80, 100 and 100 m and 5 m electrode spacing. The research area is a plateau with a slope of up to 40º which is directly adjacent to the very steep cliffs of Sianok Canyon with a cliff height of 30-100m. Data processing was carried out using Res2dinv software to display a 2-dimensional image of the subsurface layer structure based on the resistivity values measured in the field. In the cross section of the mapping results in the three tracks, 4 rock layers were identified, namely clay, sand, tuff and granite. The interpretation results show that the sliding plane on each track is tuff. For Track 1 with a depth of 3,75-15,9m, for track 2 it is 5,15-19,8 m and a depth of 6,38-19,8 m for track 3. Based on the interpretation of 2D image results, the area of track 1 and 2 has a translational avalanche type and the area of track 3 has a rotational avalanche type. Based on the depth and thickness of the slide field, the greatest risk of landslide is on track 3.
Investigasi Bidang Gelincir Zona Rawan Longsor dengan Metode Geolistrik di Sekitar Kawasan Wisata Panorama Bukittinggi Putri, Mifthahul; Liza Namigo, Elistia
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.742-748.2024

Abstract

The investigation of the slip plane in the landslide-prone area around Taman Panorama, Kayu Kubu, Bukittinggi City has been conducted using the 2-dimensional resistivity geoelectric method with Wenner configuration.The study was carried out on hills with a slope of 40°. Data collection was conducted along three tracks with lengths of 80, 70, and 70 meters respectively. Data processing was done using Res2dinv software to display a 2-dimensional image of subsurface layers based on the measured resistivity values in the field. The interpretation of the data results showed the presence of slippage zones along each track in the form of an volcanic breccia rock layer. For line AB, resistivity values range from 250 to 813 Ωm at depths of 3.75 - 15.9 meters. Line CD has resistivity values ranging from 137 to 375 Ωm at depths of 3.75 - 15.9 meters, while track EF had resistivity values range from 183 – 287 Ωm at depths of 6.38 – 9.25 meters. Based on the depths, the identified slip surfaces are categorized as quite deep, thus this area is classified as a landslide-prone zone.
Co-Authors Ade saputra Ade Saputra Adrial, Rico Afdal Afdal Afdal Afdal Afdal Rahman Afdhal Muttaqin Ahmad Fauzi Pohan Aisyah, Ovina Alimin Mahyudin Arif Budiman Astuti Astuti - Aulia Latifah Azlin, Amalia Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Dian Fitriyani Dian Mega Y Dian Milvita Dwi Pujiastuti Dwi Puryanti Fani Anjelina Fauzana, Husnatul Feriska Handayani Irka, Feriska Handayani Geby Sri Ayu Oktavia Harmadi Harmadi Harmadi Harmadi Hasan, Melanz Hilalliyah, Nisful Husnatul Fauzana Imam Taufiq Imam Taufiq Jarnal Witarsa Jenny Teresia Simamora Jenny Teresia Simamora, Jenny Teresia Komala, Tri Ananda Latifah, Aulia M. Ali Shafii M. Hamidi M. Hamidi M. Hamidi, M. Hamidi Ma’muri Ma’muri Ma’muri, Ma’muri Marwan, Muhammad Marzuki Marzuki Mega Y, Dian Melanz Hasan Meqorry Yusfi Mifthahul Putri Mohammad Ali Shafii Muhammad Marwan Muhammad Subhan Muhammad Subhan Muldarisnur, Mulda Murdiman, Imelda Murdiman, Imelda Mutya Vonnisa Nele Schildermans Nele Schildermans, Nele Nini Firmawati Nurul Annisa Osi Yusdesra Ovina Aisyah Pertiwi, Rahmi Nanda Puspasari, Trevi Jayanti Putri, Mifthahul Rahayu Fitri Rahayu Fitri, Rahayu Rahman, Afdal Rahmi Nanda Pertiwi Ramacos Fardela Remiandayu, Selly Rudi Hidayat Rudi Hidayat Selly Remiandayu Solly Aryza Sri Handani Sri Nofriyanti Sri Nofriyanti, Sri Sri Oktamuliani Trengginas Eka Putra Sutantyo Trevi Jayanti Puspasari Tri Ananda Komala Usna, Sri Rahayu Alfitri Vivi Lispa Yenti Vivi Lispa Yenti, Vivi Lispa Wildian Wildian Witarsa, Jarnal Yusdesra, Osi Zalwi, Eka Nadila Zulfi Zulfi Zulfi Zulfi Zulfi