Optimalisasi Parameter Inversi Impedansi Akustik dalam Karakterisasi Reservoir pada Lapangan F3 Belanda

Madjid, Alya Salsabila (2025) Optimalisasi Parameter Inversi Impedansi Akustik dalam Karakterisasi Reservoir pada Lapangan F3 Belanda. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5017211048-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (6MB) | Request a copy

Abstract

Karakterisasi reservoar hidrokarbon merupakan aspek penting dalam industri minyak dan gas, di mana data seismik dan data sumur sering kali diintegrasikan untuk mendapatkan gambaran bawah permukaan yang lebih akurat. Data seismik memiliki cakupan spasial yang luas namun terbatas dalam resolusi vertikal, sedangkan data sumur memiliki resolusi vertikal tinggi namun terbatas secara lateral. Penelitian ini bertujuan untuk menentukan metode inversi impedansi akustik terbaik guna mengkarakterisasi reservoir di Lapangan F3, sektor Laut Utara Belanda. Metode inversi yang digunakan meliputi Model-Based, Band-Limited, dan Sparse Spike, dengan data yang dianalisis berasal dari data sumur, checkshot, horizon, serta seismik 3D. Evaluasi dilakukan berdasarkan nilai korelasi antara hasil inversi dan data log sumur, serta nilai error untuk menilai akurasi masing-masing metode. Hasil penelitian menunjukkan bahwa metode model-based dengan hard constraint (Lower-Upper = 100) merupakan metode terbaik untuk estimasi impedansi akustik, dengan korelasi rata-rata tertinggi sebesar 0,9943 dan error terendah sebesar 0,1104. Peta hasil inversi menunjukkan distribusi zona impedansi rendah (< 3700 (m/s)*(g/cc)) yang berasosiasi dengan reservoar berpori, dengan pola persebaran yang memanjang secara lateral dari arah barat laut (Northwest/NW) menuju tenggara (Southeast/SE). Pola ini mencerminkan kontinuitas lateral dari sistem reservoar di area studi, serta mengindikasikan adanya keterkaitan antar lapisan berpori yang potensial sebagai zona prospek hidrokarbon.
======================================================================================================================================
Hydrocarbon reservoir characterization is a crucial aspect of the oil and gas industry, where seismic and well data are often integrated to obtain a more accurate subsurface image. Seismic data offer broad spatial coverage but are limited in vertical resolution, while well data provide high vertical resolution but are spatially limited. This study aims to determine the most effective acoustic impedance inversion method for characterizing the reservoir in the F3 Field, located in the Dutch North Sea sector. The inversion methods used include Model-Based, Band-Limited, and Sparse Spike, with the analysis based on well data, checkshots, horizons, and 3D seismic data. Evaluation was conducted by comparing the correlation values between the inversion results and well log data, as well as the error values to assess the accuracy of each method. The results show that the model-based method with hard constraint (Lower-Upper = 100) is the most optimal for acoustic impedance estimation, achieving the highest average correlation of 0.9943 and the lowest error of 0.1104. The inversion result maps reveal the distribution of low-impedance zones (< 3700 (m/s)*(g/cc)) associated with porous reservoirs, with a lateral pattern extending from the northwest (NW) to the southeast (SE). This pattern reflects the lateral continuity of the reservoir system in the study area and indicates the potential connectivity between porous layers as prospective hydrocarbon zones.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Inversi Seismik, Model-Based, Band-Limited, Sparse Spike, Seismic Inversion, Model-Based, Band-Limited, Sparse Spike
Subjects:	Q Science > QE Geology > QE538.5 Seismic tomography; Seismic waves. Elastic waves Q Science > QE Geology > QE539.2.S4 Seismic models
Divisions:	Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Alya Salsabila Madjid
Date Deposited:	29 Jul 2025 07:57
Last Modified:	29 Jul 2025 07:57
URI:	http://repository.its.ac.id/id/eprint/122803

Actions (login required)

View Item