Optimisasi Peningkatan Produksi Minyak Pada Water Alternating Gas (WAG) Flooding Enhanced Oil Recovery

., Nurfadilah (2018) Optimisasi Peningkatan Produksi Minyak Pada Water Alternating Gas (WAG) Flooding Enhanced Oil Recovery. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Hidrokarbon yang dihasilkan dari bawah tanah umumnya dapat dieksplorasi melalui 3 fase yaitu primer, sekunder, dan tersier. Fase tersier dikenal dengan Enhanced Oil Recovery (EOR) melibatkan berbagai metode recovery minyak yang canggih untuk meningkatkan aliran minyak di dalam reservoir. EOR menggunakan metode injeksi air dan CO2, dikenal dengan Water Alternating Gas (WAG), merupakan salah satu metode yang efektif dengan cara menyuntikkan gas dan air secara bergantian ke dalam sumur injeksi. Salah satu keuntungan melibatkan injeksi CO2 ke dalam reservoir yaitu untuk mengurangi jumlah kadar CO2 di atmosfer dan CO2 memiliki densitas yang rendah sehingga mampu mendesak minyak untuk keluar dari rongga-rongga batuan. Namun, harga CO2 sangatlah mahal. Oleh karena itu, metode ini dikombinasikan dengan air. Selain untuk menekan biaya produksi, air juga berfungsi untuk menambah gaya dorong minyak menuju sumur produksi. Telah dilakukan optimasi WAG menggunakan Genetic Algorithm (GA) dan Particle Swarm Optimization (PSO) dengan variabel yang dioptimisasi yaitu laju alir massa fluida injeksi, tekanan injeksi dan temperatur injeksi dengan pertimbangan biaya yang dikeluarkan minimum dan profit yang dihasilkan semaksimal mungkin. Berdasarkan hasil optimisasi diperoleh hasil terbaik menggunakan PSO yang dapat menaikkan profit sebesar 58,60% yakni dari 24485,23 USD/hari menjadi 38830,88 USD/hari. ======================================================================================================= Hydrocarbons generated from underground can generally be explored through 3 phases of primary, secondary, and tertiary. The tertiary phase known as Enhanced Oil Recovery (EOR) involves a variety of advanced oil recovery methods to improve flow of oil in the reservoir. EOR uses the water injection method and CO2, known as Water Alternating Gas (WAG) is one of the effective methods by injecting gas and water alternately into injection wells. One of the advantages involving CO2 injection into the reservoir is to reduce the amount of CO2 in the atmosphere and CO2 has a low density that can oush the oil to get out of the rock. However, the price of CO2 is very expensive. Therefore, this method is combined with water. Besides to reduce cost, water also serves to add oil thrust to production wells. Has been optimized WAG using Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) with optimized variable that isthe mass flow rate of injection fluid, injection pressure and injection temperature with consideration of minimum cost and maximum. Based on the results of optimization obtained the best results using PSO that can raise profit 58,60% from profit 24485,23 USD/day to 38840,88 USD/day.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 622.338 2 Nur o-1 3100018076124
Uncontrolled Keywords: EOR, WAG, optimisasi, GA, PSO
Subjects: A General Works > AC Collections. Series. Collected works
A General Works > AC Collections. Series. Collected works
Divisions: Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Nurfadilah Nurfadilah
Date Deposited: 17 Nov 2020 05:25
Last Modified: 03 Dec 2020 03:22
URI: https://repository.its.ac.id/id/eprint/54895

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