Sofiya, Siti (2019) Optimisasi Kondisi Operasi Injeksi Co2 Enhanced Gas Recovery Pada Batuan Shale. Other thesis, Institut Teknolog Sepuluh Nopember.
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Abstract
Kesuksesan Amerika Serikat dalam produksi natural gas pada batuan shale telah menarik perhatian masyarakat dunia sejak tahun 2000. Salah satu bukti kesuksesannya yaitu produksi natural gas pada batuan shale di Barnett, Texas, USA dengan menggunakan dua metode yaitu horizontal drilling dan hydraulic fracturing yang dapat menghasilkan trilliunan kaki kubik natural gas. Namun data produksi di lapangan menunjukkan penurunan laju produksi natural gas dalam beberapa tahun terakhir. Sehingga perlu dilakukan suatu upaya untuk meningkatkan produksi natural gas pada reservoir Barnett shale atau disebut dengan Enhanced Gas Recovery (EGR). Salah satu metode yang menarik perhatian adalah carbon sequestration yang dapat meningkatkan produksi natural gas dan mengurangi emisi gas CO2. Pada penelitian ini CO2 EGR dimodelkan dengan membagi ke dalam tiga bagian yakni injection well, reservoar, dan production well. Gradien tekanan pada injection dan production well dimodelkan dengan persamaan Beggs-Brill sedangkan pada reservoar menggunakan persamaan Darcy. Gradien temperatur untuk setiap bagian dimodelkan dengan persamaan perpindahan panas. Validasi model gradien tekanan dan temperatur pada injection dan production well terhadap PIPESIM dihasilkan error yaitu masing-masing sebesar 0.5177% dan 2.1523% ; 0.927% dan 0.743%. Sedangkan validasi reservoar terhadap COMSOL dihasilkan error sebesar 0.05152% dan 0.03588%. Dari hasil permodelan, CO2 yang tersimpan adalah 19.13 ton/hari. Berdasarkan analisa sensitivitas, profit akan meningkat ketika laju aliran massa dan temperatur injeksi meningkat sementara akan menurun ketika tekanan injeksi meningkat. Hasil terbaik optimisasi pada ketiga variabel menggunakan metode stochastic optimization algorithm didapatkan ketika digunakan Genetic Algorithm (GA), dan Particle Swarm Optimization (PSO), dan Killer Whale Algorithm (KWA) dimana terjadi peningkatan profit dari 3046.566 USD/hari menjadi 12421.649 USD/hari. Hasil perhitungan CO2 yang terserap (Carbon sequestration) dan tersimpan dalam reservoar batuan shale Barnett setelah dioptimisasi mengalami peningkatan dari 19.13 ton/hari menjadi 76.371 ton/hari.
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The success of the United States in the production of natural gas in shale rocks has attracted the attention of the world community since 2000. One proof of the success of natural gas production in shale rocks in Barnett, Texas, US uses two methods namely horizontal drilling and hydraulic fractures that can produce trillions of gases natural cubic feet. However, production data in the field shows a decline in natural gas production in recent years. It needs to be done to increase natural gas production in the Barnett shale reservoir, called Enhanced Gas Recovery (EGR). One method that attracts attention is carbon sequestration which can increase natural gas production and reduce CO2 gas emissions. In this study, CO2 EGR was modeled by dividing it into three parts, namely injection wells, reservoirs, and production wells. The pressure level on the injection and production wells is modeled with the Beggs-Brill equation while in the reservoir using the Darcy equation. The temperature gradient for each part is modeled by the equation of heat meeting. Validation of pressure and temperature gradient models on injection and production well against PIPESIM resulted in errors of 0.5177% and 2.1523 %; 0.927% and 0.743%respectively. While the reservoir validation of COMSOL produced an error of 0.192% and 0.031%. From the modeling results, the stored CO2 is 19.13 tons/day. Based on increased sensitivity, profits will increase. Increased complications will increase. The best results of optimization on variables using stochastic optimization algorithm obtained compilation used Genetic Algorithm (GA), and Particle Swarm Optimization (PSO), and Killer Whale Algorithm (KWA) which can increase profits from 3046.566 USD / day to 12421,649 USD / day. The results of the calculation of CO 2 are absorbed (Carbon sequestration) and stored in the reservoir. After being optimized, Shale Barnett increased from 19,13 tons / day to 76,371 tons / day.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Shale, Enhanced Gas Recovery, Carbon Sequestration |
| Subjects: | T Technology > TP Chemical technology > TP350 Natural gas--Drying. |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | sofiya Siti |
| Date Deposited: | 13 Nov 2024 07:09 |
| Last Modified: | 13 Nov 2024 07:10 |
| URI: | http://repository.its.ac.id/id/eprint/68569 |
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