Analisis Pengaruh Permeabilitas Terhadap CO2 Plume Berdasarkan Simulasi Reservoir

Lo, Julian (2023) Analisis Pengaruh Permeabilitas Terhadap CO2 Plume Berdasarkan Simulasi Reservoir. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Permeabilitas sangat penting dalam karakterisasi situs dan studi geosains untuk proyek penangkapan dan penyimpanan karbon (CCS). Namun, terdapat ketidakpastian yang signifikan dalam pemahaman kita tentang permeabilitas yang dapat mempengaruhi perilaku CO2 yang disuntikkan ke dalam lapisan bawah tanah. Penelitian ini bertujuan untuk menganalisis pengaruh permeabilitas terhadap pergerakan CO2 plume menggunakan model sintetis porositas tunggal berdasarkan simulasi reservoir. Dengan penyederhanaan geomekanik, tornado experimental design, serta korelasi Pearson dan Spearman dari 30000 neural network proxy model berdasarkan Latin Hypercube dan Monte Carlo experimental design, penelitian ini berhasil menjelaskan pengaruh permeabilitas terhadap pergerakan CO2. Reservoir ini mampu menahan tekanan hingga 6500 psi tanpa kegagalan batuan. Total injeksi CO2 dengan probabilitas 90% adalah 1,3 TSCF, dengan laju injeksi 30 MMSCFD, yang optimal selama 120 tahun. Pola pergerakan CO2 pada awal injeksi cenderung bergerak ke atas akibat gravitasi, namun seiring berjalannya waktu, pergerakan cenderung lateral. Permeabilitas vertikal memiliki korelasi negatif terhadap total injeksi CO2, distribusi lateral CO2 plume, dan solubilitas CO2 pada air. Di sisi lain, permeabilitas horizontal memiliki korelasi positif terhadap total injeksi CO2. Faktor-faktor seperti lokasi perforasi dan ketebalan lapisan juga mempengaruhi sejauh mana permeabilitas berperan. Namun, pergerakan CO2 secara lateral dan vertikal pada penelitian ini belum sepenuhnya teridentifikasi, dan diperlukan formula kuantifikasi yang lebih kompleks dalam simulator komersial. Dengan batasan data dan sumber daya komputasi, penelitian ini mampu menjelaskan pergerakan CO2 plume serta pentingnya faktor-faktor lain seperti porositas, lokasi perforasi, ketebalan lapisan, dan lain-lain. Rekomendasi studi ini meliputi penggunaan formula kuantifikasi yang lebih kompleks untuk memodelkan pergerakan CO2 plume, seiring dengan meningkatkan kompleksitas model.
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Permeability is critical in site characterization and geoscience studies for carbon capture and storage projects. However, there is significant uncertainty in our understanding of the permeability that may cause the behavior of CO2 injected into the subsurface. This study aims to analyze the influence of permeability on the movement of CO2 plumes using a synthetic single-porosity model based on reservoir simulation. By simplifying geomechanics, employing tornado experimental design, as well as utilizing Pearson and Spearman correlations from 30,000 neural network proxy models based on Latin Hypercube and Monte Carlo experimental design, this research successfully explains the impact of permeability on CO2 movement. The reservoir can withstand pressures up to 6500 psi without rock failure. The total CO2 injection with a 90% probability is 1.3 TSCF, with an injection rate of 30 MMSCFD, optimized for a duration of 120 years. Initially, the CO2 movement tends to be upward during injection due to gravitational effects, but over time, it tends to move laterally. Vertical permeability exhibits a negative correlation with total CO2 injection, lateral distribution of CO2 plumes, and CO2 solubility in water. On the other hand, horizontal permeability shows a positive correlation with total CO2 injection. Factors such as perforation location and layer thickness also influence the extent of permeability's role. However, the lateral and vertical movement of CO2 in this study has not been fully identified, and more complex quantification formulas are needed in commercial simulators. Despite the limitations in data and computational resources, this research successfully explains the movement of CO2 plumes and highlights the importance of other factors such as porosity, perforation location, layer thickness, among others. The recommendations of this study include the use of more complex quantification formulas to model the movement of CO2 plumes, along with increasing the complexity of the model.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CCS, CO2 Plume, Permeabilitas, Simulasi Reservoir, Permeability, Reservoir Simulation
Subjects:	Q Science > QE Geology > QE471 Sedimentary rocks. Sedimentology T Technology > T Technology (General) > T11 Technical writing. Scientific Writing T Technology > T Technology (General) > T174 Technological forecasting T Technology > T Technology (General) > T57.5 Data Processing T Technology > T Technology (General) > T57.62 Simulation T Technology > TD Environmental technology. Sanitary engineering > TD171.75 Climate change mitigation
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Julian Lo
Date Deposited:	20 Oct 2023 03:44
Last Modified:	20 Oct 2023 03:44
URI:	http://repository.its.ac.id/id/eprint/103293

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