Prediksi Hidrokarbon di Lapangan ANG Melalui Inversi Seismik

Widyanggastari, Daneswara (2024) Prediksi Hidrokarbon di Lapangan ANG Melalui Inversi Seismik. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Exploration and production optimization of hydrocarbons have been prompted by the rise in hydrocarbon use, including both oil and natural gas, each year. The process of hydrocarbon exploration necessitates high precision and accuracy to avoid losses for the implementing firm due to the significant subsurface uncertainty. By integrating seismic inversion, hydrocarbon reservoirs can be better characterized, leading to improved predictions of their presence, extent, and potential production The inversion seismic method has been widely used to generate reservoir properties in oil and gas fields. In this study, one of the inversion methods known as simultaneous inversion is used to delineate hydrocarbons in Group I-35 reservoirs in ANG Field, Malay Basin. Simultaneous inversion is applied to partial angle stack data and produces volumes of Acoustic Impedance (AI), Shear Impedance (SI), Density, Vp/vS and Lame parameter (LMR). This study aims to determine the distribution of hydrocarbons in the Group I-35 reservoir formation. Sensitivity analysis was conducted by cross-plotting between elastic parameters and Lame parameters using one well log data and analysing the separation of hydrocarbon and non-hydrocarbon zones within it. Sensitive parameters that can separate hydrocarbon fluids are Acoustic Impedance with Vp/Vs and Lambda-rho with Mu-rho with a cutoff value of 65% water saturation. Simultaneous Inversion results provide a good approach for P-impedance and S-impedance parameters with angle trace correlation of inversion results and log correlation is 0.972 where the value is said to be good because the value is >0.8. Hydrocarbon distribution is also generated from well cross plot and seismic cross plot results, and it has been proven that the simultaneous seismic inversion method can be applied to the ANG field, Malay Basin.
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Eksplorasi dan optimasi produksi hidrokarbon didorong oleh peningkatan penggunaan hidrokarbon, termasuk minyak dan gas alam, setiap tahunnya. Proses eksplorasi hidrokarbon membutuhkan presisi dan akurasi yang tinggi untuk menghindari kerugian bagi perusahaan pelaksana karena ketidakpastian bawah permukaan yang signifikan. Dengan mengintegrasikan inversi seismik, reservoir hidrokarbon dapat dikarakterisasi dengan lebih baik, yang mengarah pada peningkatan prediksi keberadaan, luas, dan potensi produksinya. Metode seismik inversi telah banyak digunakan untuk menghasilkan properti reservoir pada ladang minyak dan gas. Pada penelitian ini, salah satu metode inversi yang dikenal dengan inversi simultan digunakan untuk mendelineasi hidrokarbon pada reservoir Grup I-35 di Lapangan ANG, Cekungan Melayu. Inversi simultan diaplikasikan pada data partial angle stack dan menghasilkan volume Acoustic Impedance (AI), Shear Impedance (SI), Densitas, Vp/vS dan Lame parameter (LMR). Penelitian ini bertujuan untuk mengetahui distribusi hidrokarbon pada formasi reservoir Group I-35. Analisa sensitivitas dilakukan dengan melakukan crossplot antara parameter elastisitas dan parameter Lame dengan menggunakan satu data log sumur dan menganalisa pemisahan zona hidrokarbon dan non hidrokarbon di dalamnya. Parameter sensitif yang dapat memisahkan fluida hidrokarbon adalah Impedansi Akustik dengan Vp/Vs dan Lambda-rho dengan Mu-rho dengan nilai cutoff 65% saturasi air. Hasil Inversi Simultan memberikan pendekatan yang baik untuk paramater impedansi P dan impedansi S.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Inversi Seismik Simultan, Distribusi Hidrokarbon, Lapangan ANG
Subjects:	Q Science > QE Geology Q Science > QE Geology > QE539.2 Seismic traveltime inversion
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Daneswara Widyanggastari
Date Deposited:	11 Feb 2024 08:18
Last Modified:	11 Feb 2024 08:18
URI:	http://repository.its.ac.id/id/eprint/106748

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