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All Journal Journal of Earth Energy Science, Engineering, and Technology Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
Tomi Erfando
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science

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Optimization of Polymer Flooding Using Genetic Algorithm Ramadani; Tomi Erfando
Journal of Earth Energy Science, Engineering, and Technology Vol. 6 No. 1 (2023): JEESET VOL. 6 NO. 1 2023
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v6i1.16319

Abstract

One of the methods to achieve optimal conditions in increasing oil recovery through injecting polymers is by optimizing the parameters that influence the success of injecting polymers to provide information and be considered when determining new schemes for implementation in the future. Optimization to obtain the optimum value of the recovery factor and the best value of the parameters PV, injection rate, injection time, injection pressure, adsorption, residual resistance factor (RRF), and inaccessible pore volume (IPV) using a genetic algorithm with three training ratios and testing 70: 30, 80: 20 and 90: 10 using 1000 datasets. The best value obtained for each parameter is at a ratio of 90: 10, which is the best model with the lowest reference error value with RSME of 0.241104 and MAPE value of 19.1964 classified as good prediction with the value of each adsorption parameter 0.1737 (g/l), injection rate 703 (bpd), injection pressure 1816, IPV 0.2524, RRF 4.8319 and finally the optimum value for recovery factor is 53.9557.
Heterogeneity Effect on Polymer Injection: a Study of Sumatra Light Oil Romal Ramadhan; Adi Novriansyah; Tomi Erfando; Suparit Tangparitkul; Arik Daniati; Asep Kurnia Permadi; Muslim Abdurrahman
Scientific Contributions Oil and Gas Vol. 46 No. 1 (2023): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.46.1.314

Abstract

The production of oil and gas is heavily dependent on the heterogeneity of the reservoir. Optimizing the production plan and maximizing recovery from the reservoir depends on an understanding of how heterogeneity affects fluid flow and recovery. Techniques such as water flooding and polymer flooding were used to increase oil production from reservoirs while evaluating the impact of reservoir heterogeneity. Numerical simulations in homogeneous and heterogeneous models were performed in this research to identify the optimal operational parameters that will optimize oil recovery and assess the effect of heterogeneity in the reservoir on the recovery factor of the reservoir. The result showed that the homogeneous model obtained 59.86% of the oil recovery factor, while the heterogeneous reservoirs for Lk = 0.2, 0.4, and 0.6 resulted from 45.83%, 69.27%, and 80.46% of oil recovery after twenty years of production, respectively. The heterogeneous reservoir with Lk = 0.6 indicated the highest sweep efficiency compared to other scenarios, while the reservoir with Lk = 0.2 showed the lowest sweep efficiency
Parameter Analysis of Polymer on Sandstone Reservoir in Indonesia: An Experimental Laboratory Study Gerry S; Bayu D Prasetiyo; Tomi Erfando
Scientific Contributions Oil and Gas Vol. 45 No. 2 (2022): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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Abstract

Polymers are often used to increase oil recovery by improving sweeping efficiency. The screening was carried out as a first step in evaluating the test parameters of several polymers of the Hydrolyzed Polyacrylamide (HPAM) type in fluid and sandstone reservoir rocks. The test was carried out using a reservoir fluid classified as light oil (35°API) and at a reservoir temperature (60°C). The HPAM polymers used are A1, F1, F2, F3, and P1 polymers. The test parameters carried out on these 5 types of polymer (A1, F1, F2, F3 dan P1) include a compatibility test for formation water. The rheology polymer test includes concentration vs Tres, and shear rate vs viscosity which aims to determine the type of polymer solution being tested is a non-Newtonian or pseudoplastic fluid group. Thermal stability test of polymer for 60 days to determine the stability of the polymer solution and whether it is degraded or stable. Filtration testing with criteria FR value < 1.2, screen factor test, and adsorption testing using the static method with a standard limit of adsorption value < 400 µg/gr and polymer injectivity test. From these tests, scoring (range 0-100) was carried out to determine polymer candidates in polymer flooding testing. The F1 polymer candidate for the sandstone reservoir was obtained with a score of 82.25. From the scoring results, the selected F1 polymer candidate has a concentration value of 2000 ppm. For thermal degradation, the polymer F1 2000 ppm experienced degradation of 15.5%. The results of the F1 2000 ppm polymer static adsorption test were 54.8 µg/gr. With the RRF = 1 value indicating rock permeability after injection of polymer F1 2000 ppm, it tends not to experience plugging due to injection of polymer solution.
Potensi Polimer Sintetik Sebagai Bahan Chemical Enhaced Oil Recovery Untuk Meningkatkan Sweep Efficiency Pada Skala Pengujian Laboratorium Nia Raudhatul Auni; Muhammad Khairul Afdhol; Muhamad Ridha Fikri; Tomi Erfando
Lembaran Publikasi Minyak dan Gas Bumi Vol. 57 No. 1 (2023): LPMGB
Publisher : BBPMGB LEMIGAS

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Abstract

Masalah yang terjadi di lapangan minyak dan gas saat ini adalah penurunan produksi minyak dan gas. Kondisi ini dipengaruhi oleh keadaan reservoar yang sudah tua yang mengandung minyak berat sehingga sulit mengalir. Selain itu, factor reservoar yang sudah digenangi air, sehingga air lebih banyak diproduksi dibandingkan minyak. Penelitian sebelumnya dengan menggunakan polimer hydrolyzed polyacrylamides (HPAM) mendapat hasil yang kurang maksimal untuk reservoar klastik (seperti sandstone ataupun limestone clastic), dan untuk kondisi temperatur dan tekanan tinggi. Tujuan dari penelitian ini adalah untuk mengoptimalkan sweep efficiency pada proses enhanced oil recovery (EOR) dengan menginjeksikan polimer kationik ke dalam reservoar. Penelitian ini menggunakan metode pengujian laboratorium dengan melakukan pengujian karakterisasi, reologi dan pengujian core flooding. Hasil yang diperoleh dari pengujian ini adalah polimer kationik memiliki morfologi yang teratur seperti film, serta pada suhu 30˚C, 50˚C, dan 60˚C tidak terjadi penggumpalan. Adapun, nilai viskositas mengalami kenaikan seiring dengan peningkatan konsentrasi polimer. Polimer kationik dengan konsentrasi 3000 ppm memiliki nilai viskositas tertinggi yaitu 32,77 cP sehingga nilai konsentrat tersebut memberikan pengaruh yang kuat terhadap peningkatkan oil recovery. Namun, hasil uji reologi (salinitas, suhu, dan shear rate) tidak berpengaruh signifikan terhadap kinerja polimer. Nilai incremental recovery factor polimer kationik lebih signifikan dibandingkan polimer sintetik lainnya, yaitu 35,62% ROIP.
Co-Authors Adi Novriansyah Arik Daniati Asep Kurnia Permadi Bayu D Prasetiyo Gerry S Muhamad Ridha Fikri Muhammad Khairul Afdhol Muslim Abdurrahman Nia Raudhatul Auni Ramadani Romal Ramadhan Suparit Tangparitkul