SULISTIYONO, SULISTIYONO (2022) PERBANDINGAN FORMULA VSHALE BERBASIS GEOFISIKA WELL LOGGING DAN DATA CORING DI DESA TEPOK, KEC. LOA JANAN, KAB. KUTAI KARTANEGARA. Other thesis, UPN 'Veteran" Yogyakarta.
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Abstract
vi
ABSTRAK
PERBANDINGAN FORMULA VSHALE BERBASIS GEOFISIKA
WELL LOGGING DAN DATA CORING DI DESA TEPOK, KEC. LOA
JANAN, KAB. KUTAI KARTANEGARA
Oleh:
SULISTIYONO
11518004
Formula untuk menentukan vshale sudah muncul sejak akhir 1960an.
Meskipun formula vshale sudah dirumuskan sejak tahun 1969, namun sampai saat
ini belum ada penelitian yang mencoba membandingkan antara formula vshale
yang satu dengan yang lain sehingga menyebabkan kerancuan dalam menentukan
formula vshale yang dipakai utamanya di daerah penelitian.
Metode yang dipakai adalah geofisika well logging yaitu log gamma ray
untuk menghitung nilai vshale dengan beberapa formula. Nilai vshale yang
dihasilkan dianalisis berdasarkan ketebalan dan perhitungan k-nearest neighbor.
Hasil analisi divalidasi dengan data lapangan berupa data logging dan data coring.
Berdasarkan analisis perbandingan formula vshale, formula Larionov
memiliki parameter yang paling lengkap dibandingkan dengan formula lainnya.
Berdasarkan perbandingan vshale untuk menentukan batas dan ketebalan lapisan
batubara di daerah penelitian, formula Larionov (tertiary rock) memiliki selisih
ketebalan dengan data coring paling kecil yaitu sebesar 1 cm. Berdasarkan
penampang bawah permukaan dan Model 3D hasil perhitungan k-nearest neighbor
di daerah penelitian, pada penampang menggunakan formula linier, Larionov
(older rock), steiber dan clavier terdapat ketidaksesuaian batas lapisan pada sumur
5 dan keterdapatan litologi pada sumur 9. Pada penampang dengan menggunakan
formula Larionov (tertiary rock) memiliki kesesuaian dengan data coring dan
logging terkait batas lapisan batuan dan kesesuaian litologi.
Kata kunci: Formula vshale, Well logging, Data coring
vii
ABSTRACT
COMPARISON OF VSHALE FORMULA BASED ON GEOPHYSICAL WELL
LOGGING AND CORING DATA IN THE DESA TEPOK, KEC. LOA JANAN,
KAB. KUTAI KARTANEGARA
By:
SULISTIYONO
11518004
Formulas for determining vshale have appeared since the late 1960s.
Although the vshale formula has been formulated since 1969, until now there has
been no research that has tried to compare one vshale formula to another, confusing
in determining the vshale formula to be used primarily in the study area.
The method used is geophysical well logging, namely gamma ray logs to
calculate vshale values with several formulas. The resulting vshale values are
analyzed based on thickness and k-nearest neighbor calculations. The results of the
analysis are validated with field data in the form of logging data and coring data.
Based on a comparative analysis of the vshale formula, the Larionov formula
has the most complete parameters compared to the other formulas. Based on the
vshale comparison to determine the boundaries and thickness of the coal seams in
the study area, the Larionov formula (tertiary rock) has the smallest thickness
difference with the coring data, which is 1 cm. Based on the subsurface cross�section and the 3D model from the calculation of the k-nearest neighbor in the study
area, at the cross-section using the linear formula, Larionov (older rock), steiber
and clavier there is a discrepancy between the boundary layers in well 5 and the
presence of lithology in well 9. The cross-section using Larionov's formula (tertiary
rock) has compatibility with coring and logging data related to rock layer
boundaries and lithology suitability.
Keywords: vshale formula, Well logging, Data coring
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | vshale formula, Well logging, Data coring |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 08 Dec 2022 01:21 |
| Last Modified: | 08 Dec 2022 01:21 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/31843 |
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