Mufid, Shubaihul (2012) ANALISIS MIKROTREMOR UNTUK MENGIDENTIFIKASI RESERVOAR HIDROKARBON PADA LAPANGAN “NO PLAY”, SUB CEKUNGAN JAMBI. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
Passive seismic methods (microtremor hydrocarbons) is a seismic method
that utilizes micro vibrations that come from nature. This method can be used to
determine the movement of soil, volcanic activity, and monitoring the geothermal
field. In its development, Passive seismic methods are used for hydrocarbon
exploration. This method is very useful to be applied in the development of new
fields before do seismic 2D/3D and avoid the risk of kindling dry hole.
Passive seismic measurements have been carried out on the "No Play"
field, Jambi Sub Basin, Jambi Province. Measurements using three seismometer
components (east-west, north-south, and vertical) and Digital digitizer.
Measurements were performed for 3 hours for every point. Data processing is
done on a 4 point measurement. 1 point measurements were made near the well
dry well and a point near the gas wells for the calibration well. And two
measurement points in the area of the Field "No Play".
The results generated microtremor wave character in the 3 components.
On the horizontal components (east-west, north-south) shows the amplitude of the
measurement in strengthening soft soil layer (peat soils), while the vertical
component not found. Point of the vertical component of NP-2 2-5 Hz frequency
spectrum obtained with a strong amplitude corresponding to the frequency
spectrum of the calibration gas well and is indicated as a hydrocarbon reservoir.
Keyword : Passive seismic, Hydrocarbon, Frequency Spectrum
Metode passive seismic (mikrotremor hidrokarbon) merupakan metode
seismik yang memanfaatkan getaran mikro yang bersumber dari alam. Metode ini
dapat dimanfaatkan untuk mengetahui pergerakan lapisan tanah, aktifitas gunung
api, dan monitoring pada lapangan panas bumi. Dalam perkembangannya metode
Passive Seismic digunakan untuk ekplorasi hidrokarbon. Metode ini sangat
bermanfaat untuk di terapkan pada pengembangan lapangan baru sebelum
dilakukan seismik 2D/3D dan menghindari resiko pengeboran dry hole.
Pengukuran passive seismic telah dilakukan pada lapangan “No Play” Sub
Cekungan Jambi Provinsi Jambi. Pengukuran menggunakan seismometer 3
komponen (barat-timur, utara-selatan, dan vertikal) dan digitizer Digital.
Pengukuran dilakukan selama 3 jam untuk setiap titiknya. Pengolahan data
dilakukan pada 4 titik pengukuran. 1 titik pengukuran dilakukan didekat sumur
dry well dan 1 titik di dekat sumur gas well untuk kalibrasi. Dan 2 titik
pengukuran di area Lapangan “No Play”.
Hasil penelitian dihasilkan karakter gelombang mikrotremor pada 3
komponen. Pada komponen horizontal (barat-timur, utara-selatan) menunjukkan
penguatan amplitudo pada pengukuran di lapisan tanah lunak (tanah gambut)
sedangkan pada komponen vertikal tidak ditemukan. Dari komponen vertikal titik
NP-2 didapatkan spektrum frekuensi 2 - 5 Hz dengan amplitudo yang kuat yang
sesuai dengan spektrum frekuensi kalibrasi gas well dan di indikasikan sebagai
adanya reservoar hidrokarbon.
Kata Kunci : Passive seismic, hidrokarbon, spektrum frekuensi
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Mr Suninto Prabowo |
| Date Deposited: | 01 Jun 2016 07:46 |
| Last Modified: | 01 Jun 2016 07:46 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/2835 |
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