Kajian Life Cycle Assessment (LCA) Proses Produksi Crude Oil Dan Natural Gas Di PT Pertamina Hulu Kalimantan Timur Daerah Operasi Bagian Utara (PHKT DOBU)

Putera, Rizky Islami (2021) Kajian Life Cycle Assessment (LCA) Proses Produksi Crude Oil Dan Natural Gas Di PT Pertamina Hulu Kalimantan Timur Daerah Operasi Bagian Utara (PHKT DOBU). Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT Pertamina Hulu Kalimantan Timur Daerah Operasi Bagian Utara (PHKT DOBU) merupakan salah satu perusahaan eksploitasi dan produksi crude oil dan natural gas untuk memenuhi kebutuhan energi di Indonesia. Kegiatan proses eksploitasi dan produksi crude oil dan natural gas di PHKT DOBU terdiri dari proses STA Platform, Attaka Platform, dan Terminal Santan. Kegiatan proses eksploitasi dan produksi crude oil dan natural gas akan menghasilkan bahan pencemar yang menjadi sumber pencemar bagi lingkungan. Oleh karena itu perlu dilakukan kajian dampak lingkungan menggunakan metode Life Cycle Assessment (LCA) terhadap proses produk crude oil dan natural gas. LCA adalah metode untuk menganalisis dampak lingkungan di seluruh unit proses perusahaan untuk menghasilkan produk. Penelitian ini mengidentifikasi dampak lingkungan pada unit operasi proses berdasarkan pendekatan cradle to gate pada dua produk yaitu crude oil dan natural gas di PHKT DOBU. Metode yang digunakan untuk mengkategorikan dampak pada kajian LCA adalah ReCipe 2016 pada tingkat midpoint dan endpoint dengan aplikasi SimaPro. Untuk menunjang kajian LCA, dilakukan analisis ketidakpastian dengan melakukan penilaian kualitas data untuk menentukan distribusi probabilitas data dan dianalisis menggunakan simulasi Monte Carlo. Berdasarkan hasil analisis LCA dan analisis ketidakpastian, dilakukan analisis skenario penurunan dampak lingkungan dengan program lingkungan. Penilaian dampak lingkungan dengan LCA menunjukan proses produksi 1 ton natural gas memberikan kontribusi dampak lebih besar yaitu 60,59 Pt dari proses produksi 1 ton crude oil yaitu 9,18 Pt dengan dampak lingkungan paling dominan adalah fossil resource scarcity. Hal ini dikarenakan pada proses produksi natural gas, dampak lingkungan terbesar berasal dari unit Compressor Station dan Gas Lift Compressor yang berfungsi untuk menginjeksikan sebagian besar natural gas kembali ke sumur bertujuan untuk mendorong crude oil keluar sedangkan sebagian kecil natural gas menjadi produk. Compressor Station dan Gas Lift Compressor lebih memiliki fungsi pada proses produksi crude oil, namun pada kajian LCA ini kedua unit proses tersebut dimasukan kedalam proses produksi natural gas berdasarkan penentuan alokasi produk. Pada proses produksi crude oil, kontribusi dampak lingkungan terbesar berasal dari unit proses Water Treatment System, ATK-PP Shipping Pump, dan Crude Heater. Pada proses produksi natural gas, kontribusi dampak lingkungan terbesar berasal dari unit proses Compressor Station, Gas Lift Compressor, dan 2nd Stage Compressor. Analisis ketidakpastian data emisi proses produksi 1 ton crude oil memberikan kontribusi dampak lingkungan antara 8,48 – 10,9 Pt dan proses produksi 1 ton natural gas memberikan kontribusi dampak lingkungan antara 52,46 – 71,60 Pt. Program lingkungan paling optimum dalam menurunkan dampak lingkungan pada proses produksi crude oil yaitu pemasangan VSD pada ATK-PP Shipping Pump dengan persentase penurunan dampak sebesar 2,817%. Sedangkan pada proses produksi natural gas yaitu program modifikasi Dovetaul Crown Tip pada rotor compressor dengan persentase penurunan dampak sebesar 7,236%. ====================================================================================================== PT Pertamina Hulu Kalimantan Timur Daerah Operasi Bagian Utara (PHKT DOBU) is company of exploitation and production crude oil and natural gas to meet energy needs in Indonesia. The exploitation and production process for crude oil and natural gas at PHKT DOBU consists of STA Platform, Attaka Platform, and Santan Terminal processes. Activities of exploitation and production of crude oil and natural gas will produce pollutants which become a source of pollution for the environment. Therefore, it is necessary to conduct an environmental impact study using the Life Cycle Assessment (LCA) method on the process of crude oil and natural gas products. LCA is a method for analyzing environmental impacts across all units of a company process to produce a product. This study identifies the environmental impact of the unit operating process based on the cradle to gate approach on two products, namely crude oil and natural gas at PHKT DOBU. The method used to categorize the impact on the LCA study is ReCipe 2016 at the midpoint and endpoint levels with the SimaPro application. To support the LCA study, an uncertainty analysis was carried out by assessing the quality of the data to determine the probability distribution of the data and analyzed using a Monte Carlo simulation. Based on the results of the LCA analysis and uncertainty analysis, an environmental impact reduction scenario analysis was carried out with an environmental program. Environmental impact assessment with LCA shows that the production process of 1 ton natural gas contributes a greater impact, namely 60.59 Pt than the production process of 1 ton crude oil, which is 9.18 Pt, with the most dominant environmental impact being fossil resource scarcity. This is because in the natural gas production process, the largest environmental impact comes from the Compressor Station and Gas Lift Compressor units, which function to inject most of the natural gas back into the well, aiming to push crude oil out while a small portion of natural gas becomes product. Compressor Station and Gas Lift Compressor have more functions in the crude oil production process, but in this LCA study the two process units are included in the natural gas production process based on the determination of product allocation. In the crude oil production process, the largest environmental impact contribution comes from the Water Treatment System, ATK-PP Shipping Pump, and Crude Heater process units. In the natural gas production process, the largest environmental impact contribution comes from the Compressor Station, Gas Lift Compressor, and 2nd Stage Compressor process units. The uncertainty analysis of the emission data of the production process of 1 ton crude oil contributes to the environmental impact between 8.48 – 10.9 Pt and the production process of 1 ton natural gas contributes to the environmental impact between 52.46 – 71.60 Pt. The most optimum environmental program in reducing environmental impact on the crude oil production process is the installation of VSD on ATK-PP Shipping Pump with a percentage reduction of 2.817% impact. Meanwhile, in the natural gas production process, the Dovetaul Crown Tip modification program on the rotor compressor with a percentage reduction in impact of 7.236%.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Crude oil, LCA, Natural gas, PHKT DOBU, ReCiPe 2016
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD194.6 Environmental impact analysis
Divisions: Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis
Depositing User: Rizky Islami Putera
Date Deposited: 11 Aug 2021 06:35
Last Modified: 11 Aug 2021 06:35
URI: https://repository.its.ac.id/id/eprint/85431

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