Shofyan, Muhammad Shafran (2016) Penerapan Metode Very Low Frequency Electromagnetic (VLF-EM) Untuk Mendeteksi Rekahan Pada Daerah Tanggulangin, Sidoarjo. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pengeboran sumur gas baru milik PT. Lapindo Brantas yang berada di Tanggulangin, Sidoarjo dinilai memiliki risiko yang tinggi, hal ini berdasarkan kondisi geologi dan pergerakan lempeng tektonik daerah Sidoarjo, dimana daerah Sidoarjo sangat rentan terhadap terjadinya erupsi lumpur panas. Selain itu, peristiwa meluapnya lumpur panas di Porong, Sidoarjo menyebabkan tanah di sekitar Sidoarjo memiliki banyak rekahan yang berpotensi dapat memperluas daerah semburan lumpur. Oleh sebab itu, perlu dilakukan penelitian yang berjudul “Penerapan Metode Very Low Frequency Electromagnetic (VLF-EM) Untuk Mendeteksi Rekahan Pada Daerah Tanggulangin, Sidoarjo” yang bertujuan untuk mendeteksi rekahan yang berada di daerah pengeboran sumur gas baru PT. Lapindo di Tanggulangin, Sidoarjo. Metode VLF-EM digunakan karena metode ini efektif untuk melakukan pemetaan kondisi bawah permukaan seperti rekahan dan patahan dengan penetrasi kedalaman sekitar 50 meter. Berdasarkan hasil penelitian yang sudah dilakukan, diketahui bahwa daerah pengeboran sumur gas baru milik Lapindo terdapat banyak rekahan yang memiliki arah Barat Daya-Timur Laut. Dengan banyaknya rekahan ini, pengeboran sumur gas baru milik PT. Lapindo sangat berisiko karena dapat menyebabkan penurunan tanah di daerah sekitar dan dikhawatirkan dapat memperluas semburan lumpur panas pada daerah tersebut.
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PT. Lapindo Brantas’s new gas well drilling that is located in Tanggulangin Sidoarjo has a high risk because based on its geologic condition and tectonic plates movement, Sidoarjo is susceptible of mud volcano eruption. Furthermore, the overflow of mud volcano eruption in Porong, Sidoarjo caused land in the area around Sidoarjo has numerous fractures, potentially expanding area of the mudflow. This fact leads us to observe more about it and make a paper named “Application of Very Low Frequency Electromagnetic (VLF-EM) Method to Detect Fracture in Tanggulangin, Sidoarjo”. This observation aims to know and learn more about to detect fractures in the area of PT. Lapindo Brantas’s new gas well drilling. VLF- EM Method used for this observe because this method effective for mapping subsurface condition, for example: fault and fracture in the depth of 50 meters. Based on the observation result, it is known that there are lot of fractures on the area of interest that have directions Southwestern-Northeast. Fractures show PT. Lapindo Brantas’s new gas well drilling is very risk because it can lead to decreased land deeper and feared to expand the mudflow in Sidoarjo area.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSGf 622.153 Sho p |
| Uncontrolled Keywords: | Lumpur Panas, Rekahan, Sumur Gas Lapindo, VLF-EM |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN871.3 Offshore well drilling |
| Divisions: | Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | ansi aflacha |
| Date Deposited: | 26 Mar 2020 07:26 |
| Last Modified: | 26 Mar 2020 07:26 |
| URI: | http://repository.its.ac.id/id/eprint/75564 |
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