MAULANA, AJI DARMA (2021) GEOLOGI LINGKUNGAN PENGENDAPAN DAN PREDIKSI SEBARAN KUALITAS RESERVOIR MENGGUNAKAN DIRECT PROPERTY INVERSION, PHASE CONVERSION, MODEL BASED, SEQUENTIAL GAUSSIAN SIMULATION CO-KRIGGING DAN ENERGY COLOUR BLENDING ATTRIBUTE STUDI KASUS EKSPLORASI CEKUNGAN “ENIGMA” LAPANGAN “JUARA”. Other thesis, Universitas Pembangunan Nasional "Veteran" Yogyakarta.
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Abstract
Kualitas reservoar merupakan parameter yang menyatakan tingkat suatu area
reservoar memiliki nilai yang lebih baik dari pada area satu dengan yang lain.
Peneltian ini kualitas reservoar direpresentasikan dengan porositas efektif. Untuk
mendapatkan sebaran kualitas reservoar dengan akurasi yang baik pada suatu area
penelitian, maka integrasi proses analisis dan interpretasi secara kualitatif dan
kuantitatif dilakukan.
Menggunakan metode direct property inversion, phase conversion dan
sequential gaussian simolation diharapkan sifat fisika batuan dapat tersebarkan
secara presisi menggunakan data wireline log dan seismik 3D. Direct property
inversion merupakan metode yang dapat melakukan inversi dari property batuan
secara langsung berdasarkan konsep inversi seismik. Namun, sebelum dapat
dilakukan inversi, data seismik haruslah dimodifikasi agar dapat merepresentasikan
nilai pemantulan gelombang dari setiap property. Diantaranya adalah Seismic AI,
Seimisc Vp, Seismic Density dan Seismic Porosity. Selanjutnya keempat data
tersebut akan menduduki posisi sebagai RAW data untuk proses inversi seismik
menggunakan metode Model Based. Hasil dari proses tersebut akan menjadi trend
guide untuk melakukan simulasi geostatistika menggunakan Sequential Gaussian
Simulation. Kemudian dielaborasikan dengan analisis attribute seismic
menggunakan metode Energy Colour Blending untuk mengetahui bentuk statis
model bawah permukaan. Hasil dari proses direct property inversion, phase
converion menggunakan model base dan Energy Colour Blending dapat
diintegrasikan untuk mengetahui zona prospeksi keberadaan hydrocarbon yang
terdapat pada area upside potensial.
Hasil penelitian ini adalah Static Model dari property batuan (AI, Vp, Density,
Total Porosity dan Effective Porosity) didapatkan melalui proses inversi seismik.
Serta model konseptual lingkungan pengendapan daerah penelitian yang dibangun
berdasarkan data seismik, data log serta kajian referensi ilmu geologi pengendapan.
Kata Kunci : Lingkungan pengendapan, direct property inversion, phase
converison, Sequantial Gaussian Simulation dan Energy Colour Blending
ABSTRACT
GEOLOGY OF THE DEPOSITIONAL ENVIRONMENT AND RESERVOAR
QUALITY DISTRIBUTION PREDICTION USING DIRECT PROPERTY
INVERSION FROM PHASE CONVERSION, MODEL BASED, SEQUENTIAL
GAUSSIAN SIMULATION CO-KRIGGING AND ENERGY COLOUR
BLENDING ATTRIBUTE EXPLORATION CASE STUDY ON “JUARA” FIELD,
“ENIGMA” BASIN
By:
AJI DARMA MAULANA
115160010
Reservoir quality is a parameter which states the level of a reservoir area has a
better value than one another. In this research, reservoir quality is represented by
effective porosity. To get the distribution of reservoir quality with good accuracy in
a research area, the integration of the qualitative and quantitative analysis and
interpretation processes is carried out.
Using the direct property inversion, phase conversion and sequential gaussian
simolation methods, it is expected that the physical properties of the rock can be
distributed precisely using wireline log and 3D seismic data. Direct property
inversion is a method that can perform inversion of rock properties directly based
on the seismic inversion concept. However, before inversion can be carried out, the
seismic data must be modified in order to represent the wave reflection value of
each property. Among them are Seismic AI, Seimisc Vp, Seismic Density and
Seismic Porosity. Furthermore, the four data will occupy a position as RAW data
for the seismic inversion process using the Model Based method. The results of this
process will become a trend guide for performing geostatistical simulations using
Sequential Gaussian Simulation. Then elaborated with the analysis of the seismic
attribute using the Energy Color Blending method to determine the static shape of
the subsurface model. The results of the direct property inversion, phase converion
process using the base model and Energy Color Blending can be integrated to
determine the prospecting zone for the presence of hydrocarbons in the potential
upside area.
The results of this study are the Static Model of the rock properties (AI, Vp,
Density, Total Porosity and Effective Porosity) obtained through the seismic
inversion process. As well as a conceptual model of the depositional environment
of the research area that is built based on seismic data, log data and a reference
study of depositional geology.
Keywords: Depositional environment, direct property inversion, phase conversion,
Sequential Gaussian Simulation and Energy Color Blending
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Lingkungan pengendapan, direct property inversion, phase converison, Sequantial Gaussian Simulation dan Energy Colour Blending |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 03 Mar 2021 05:17 |
| Last Modified: | 13 Dec 2022 03:26 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/24841 |
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