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All Journal TEKNIK Journal of Geoscience, Engineering, Environment, and Technology JOURNAL OF EARTH ENERGY ENGINEERING Scientific Contribution Oil and Gas
Tomi Erfando, Tomi
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

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 1 
Analysis of Petroleum Downstream Industry Potential in Riau Province Erfando, Tomi; Herawati, Ira
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 2 (2017): JGEET Vol 02 No 02 : June (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.226 KB) | DOI: 10.24273/jgeet.2017.2.2.304

Abstract

Petroleum downstream industry in Riau Province is still not optimal. The data shows that from 98,892,755 barrels lifting oil each year only 62,050,000 barrels could be processed in refinery unit II Dumai operated by PT Pertamina. There is a potential of 35-40% of downstream industry. Indonesian Government through The Ministry of Energy and Mineral Resources declared the construction of a mini refinery to boost oil processing output in the downstream sector. A feasibility study of development plan mini refinery is needed. The study includes production capacity analysis, product analysis, development & operational refinery  analysis and economic analysis. The results obtained by the mini refinery capacity is planned to process crude oil 6000 BOPD with the products produced are gasoline, kerosene, diesel and oil. Investment cost consist of is capital cost US $ 104419784 and operating cost US $ 13766734 each year with net profit earned US $ 12330063/year and rate of return from investment 11.63%
Rekonstruksi dan Validasi Data Permeabilitas Relatif Untuk Proses History Matching Dalam Simulasi Reservoir Pengembangan Lapangan X Rita, Novia; Erfando, Tomi
JOURNAL OF EARTH ENERGY ENGINEERING Vol 4 No 2 (2015): OCTOBER
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (691.005 KB) | DOI: 10.22549/jeee.v4i2.637

Abstract

Sebelum suatu model reservoir digunakan, terlebih dahulu dilakukan history matching atau menyesuaikan kondisi model dengan dengan kondisi reservoir. Salah satu parameter yang perlu disesuaikan adalah permeabilitas relatif. Untuk melakukan rekonstruksi nilai permeabilitas relatifnya dibutuhkan data SCAL (Special Core Analysis) dari sampel core. Langkah awal rekonstruksi adalah dengan melakukan normalisasi data permeabilitas relatif (kr) dan saturasi air (Sw) dari data SCAL yang berasal dari tiga sampel core. Setelah dilakukan nomalisasi, dilakukan denormalisasi data permeabilitas relatif yang akan dikelompokkan berdasarkan jenis batuannya. Setelah dilakukan history matching menggunakan black oil simulator, data denormalisasi tersebut belum sesuai dengan kondisi aktual. Selanjutnya digunakan persamaan Corey untuk rekonstruksi kurva permeabilitas relatifnya. Hasil dari persamaan tersebut didapat bahwa nilai kro dan krw jenis batuan 1 sebesar 0,25 dan 0,09 kemudian nilai kro dan krw untuk jenis batuan 2 sebesar 0,4 dan 0,2. Nilai permeabilitas dari persamaan Corey digunakan untuk melakukan history matching, hasilnya didapat kecocokan (matching) dengan keadaan aktual. Berdasarkan hasil simulasi, nilai produksi minyak aktualnya adalah 1.465.650 bbl sedangkan produksi dari simulasi adalah 1.499.000 bbl. Artinya persentase perbandingan aktual dan simulasinya adalah 1,14% yang dapat dikatakan cocok karena persentase perbedaannya di bawah 5%.
Optimasi Laju Injeksi Pada Sumur Kandidat Convert to Injection (CTI) di Area X Lapangan Y Erfando, Tomi; Rita, Novia; Marliaty, Toety
Journal of Earth Energy Engineering Vol 6 No 2 (2017): OCTOBER
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1402.915 KB) | DOI: 10.22549/jeee.v6i2.992

Abstract

Area X merupakan bagian dari lapangan Y saat ini mengalami dalam kurun waktu 16 tahun terakhir penurunan laju alir produksi sebesar 64.4%. Diperlukan upaya untuk meningkat laju alir produksi minyak dan recovery factor dari area tersebut, upaya yang akan dilakukan adalah injeksi air atau waterflood dengan mengubah salah satu sumur produksi menjadi sumur injeksi (convert to injection). Penentuan kandidat sumur convert to injection (CTI) berdasarkan kondisi laju alir produksi, jarak antara sumur kandidat dan sumur produksi, serta korelasi antar sumur. Untuk memperoleh hasil yang optimal akan dibuat beberapa skenario yang akan disimulasikan dengan parameter rate injeksi dan penambahan perforasi. Penentuan rate injeksi dilakukan dengan uji sensitivitas terlebih dahulu dan memperhatikan tekanan fracture dari tiap lapisan. Penambahan perforasi dengan melihat korelasi dari data log yang ada sehingga sumur CTI dapat memberikan peningkatan terhadap sumur produksi. Hasil simulasi yang paling optimal dari skenario yang direncanakan diperoleh penambahan produksi sebesar 800 MSTB dan recovery factor sebesar 12.9%.
Effects of Various Steam Flooding Injection Patterns and Steam Quality to Recovery Factor Kusumastuti, Indri; Erfando, Tomi; Hidayat, Fiki
Journal of Earth Energy Engineering Vol 8 No 1 (2019): APRIL
Publisher : Pekanbaru Riau: Program Studi Teknik Perminyakan FT Universitas Islam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.958 KB) | DOI: 10.25299/jeee.2019.vol8(1).2909

Abstract

The main principle of steam flooding is to reduce the oil viscosity using hot steam that is injected into the reservoir. In the field implementation there are several injection patterns that can be applied for steam flooding. This research aims to determine the effect of several injection patterns and steam quality on oil recovery factor. Therefore, it can be known the injection pattern and steam quality are right to obtain the best recovery factor. Analysis was carried out on injection patterns including five-spots, inverted five-spots, seven-spots, inverted seven-spots, nine-spots, and inverted nine-spots. The variations in the steam quality used are 50%, 70% and 90%. The simulation model a 3-dimensional cartesian with grid block size 5x5x5 on CMG STARS. The parameters in this steam flooding scenario are temperature at 450° F, injection pressure of 500 psi, and injection rate of 1000 bbl /day. Of all the scenarios tested the best results were in the inverted seven spot pattern with steam quality 0.9, where recovery factor was 35,1% and total cumulative production was 269397 bbl.
Spontaneous Imbibition Test of Low Salinity Injection at Low Saline Waxy Crude Carbonate Hidayat, Fiki; Erfando, Tomi; Maulana, Borry Frima
Journal of Earth Energy Engineering Vol 7 No 2 (2018): OCTOBER
Publisher : Pekanbaru Riau: Program Studi Teknik Perminyakan FT Universitas Islam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.476 KB) | DOI: 10.25299/jeee.2018.vol7(2).2215

Abstract

Low salinity waterflooding (LSW) is categorized as one of emerging EOR technologies. It is done by injecting water with different salt composition and/or concentration. The research has been carried out for both sandstone and carbonate with the results looks promising. However, most of this research still concentrated in the north sea, middle east and North America region. This article discusses the applicability of low salinity waterflooding methodology in Indonesia. Spontaneous imbibition test is carried out to observe the recovery gain from a various combination of concentration and composition of the injected brine. The change of pH of the brine is also examined in order to confirm the pH effect mechanism. Three different concentration of brine (500 ppm, 5.000 ppm, and 10.000 ppm), three different brine composition (NaCl, CaCl2, and MgCl2) and high paraffinic crude oil are used as the fluid sample. It is found that the increased oil recovery is significant at a salinity of 10,000 ppm for MgCl2 and 5,000 ppm for NaCl ions. While the lowest recovery was shown by the test at a salinity of 500 ppm
The Key Parameter Effect Analysis Of Polymer Flooding On Oil Recovery Using Reservoir Simulation Erfando, Tomi; Rita, Novia; Ramadhan, Romal
Journal of Geoscience, Engineering, Environment, and Technology Vol 4 No 1 (2019): JGEET Vol 04 No 01 : March (2019)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (844.309 KB) | DOI: 10.25299/jgeet.2019.4.1.2107

Abstract

As time goes by, there will be decreasing of production rates of a field along with decreasing pressure. This led to the necessity for further efforts to increase oil production. Therefore, pressure support is required to improve the recovery factor. Supportable pressure that can be used can be either water flooding and polymer flooding. This study aims to compare recovery factor to scenarios carried out, such as polymer flooding with different concentrations modeled in the same reservoir model to see the most favorable scenario. The method used in this research is reservoir simulation method with Computer Modeling Group (CMG) STARS simulator. The study was carried out by observing at the pressure, injection rate, and polymer concentration on increasing field recovery factor. This study used cartesian grid with the assumption of homogeneous reservoir, there are no faults or other geological condition in the reservoir, and driving mechanism is only solution gas drive. This reservoir, oil type is light oil with API gravity 40.3˚API and layer of conglomerate rock. The simulation result performed with various scenarios provides a good result. Where the conditions case base case field recovery factor of 6.7%, and after water flooding produced 25.5% of oil, whereas with tertiary recovery method is polymer flooding was carried out with four concentrations of 640 ppm, 1,500 ppm, 3,000 ppm, and 4,000 ppm obtained optimum values at 4,000 ppm polymer concentration with recovery factor 28.9%, SOR reduction final value 0,5255, polymer adsorption of 818,700 ppm, reservoir final pressure 1,707 psi, and an increase in water viscosity to 0.94 cP.
Studi Laboratorium Pembuatan Demulsifier dari Minyak Kelapa dan Lemon untuk Minyak Kelapa dan Lemon untuk Minyak Bumi pada Lapangan x di Provinsi Riau Erfando, Tomi; Khalid, Idham; Safitri, Retno
TEKNIK Vol 40, No. 2 (2019): Agustus 2019
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (490.324 KB) | DOI: 10.14710/teknik.v39i3.23656

Abstract

Demulsifier digunakan untuk mengatasi masalah emulsi minyak mentah pada saat produksi. Artikel ini memuat uji laboratorium demulsifier lokal dari minyak kelapa dan lemon dibandingkan demulsifier komersil. Parameter yang diperiksa adalah nilai pemisahan emulsi, pengaruh parameter pengujian terhadap pemisahan air secara statistik, dan water quality hasil demulsifikasi dengan uji TDS (Total Dissolved Solid) dan pH. Penelitian ini menggunakan metode saponifikasi dalam pembuatan demulsifier dan pengujian demulsifier menggunakan metode bottle test. Variasi temperatur adalah 400C, 500, 600C, 700C, dan 800C dengan konsentrasi 1ml, 3ml, dan 5 ml. Hasil penelitian menunjukkan bahwa demulsifier lokal mampu memecah emulsi di seluruh temperatur pengujian. Pemisahan tertinggi terjadi pada temperatur 600C,700C, dan 800C  dengan konsentrasi  optimal 3ml dan 5 ml dan hasil pemisahan sebesar 32 ml dan 33 ml. Di sisi lain demulsifier komersil pada temperatur 400C dan konsentrasi 5ml gagal memecah emulsi. Pengaruh temperatur dan konsentrasi terhadap pemisahan air secara berurut sebesar 42,5 %  dan 2,7%. Water quality yang baik hasil demulsifikasi terjadi pada pengujian sampel demulsifier lokal 2 dengan TDS 244 ppm dan pH 6,99.
Studi Awal Pemanfaatan Rumput Laut dan Daun Cincau Hijau Sebagai Kandidat Bahan Alternatif untuk Injeksi Polimer EOR Huljannah, Miftah; Lestari, Fitra Ayu; Erfando, Tomi
TEKNIK Vol 41, No. 3 (2020): December 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v41i3.28148

Abstract

The declining in production can occur because wells that have been producing for a long time are no longer able to lift oil to the surface in primary and secondary ways. Therefore, tertiary methods such as chemical injection like polymer flooding were carried out. Polymers commonly used in flooding polymers are divided into three namely synthetic polymers, biopolymers, and natural polymers. Natural polymers have abundant sources such as seaweed and grass jelly. This study was aimed to identify alternative renewable polymers as flooding polymer materials by knowing initial characteristics such as viscosity, compatibility and the effect of shear rates. This test wass carried out by an experimental method with several stages, namely drying, crushing to powder, and making polymers that were dissolved into brines that have different salinity. Then the polymer was allowed to stand for more than 24 hours until it was tested. The material tested was seaweed, grass jelly, and biopolymer xanthan gum as a comparison. The parameters used are polymer concentrations of 1000 ppm, 2000 ppm and 3000 ppm with each salinity of 3000 ppm, 9000 ppm and 15000 ppm. The test results showed that the characteristics of natural polymers were the same as biopolymers, the viscosity decreased as the brines salinity increased .The absence of sedimentation resulted from Seaweed and grass jelly  solution and formation water indicated that the polymers had good compatibility and  shear rate test has shown that the polymers are psuodoplastic.
The Effect of Regular and Long Cyclic Steam Stimulation Method on Oil Production Performance of RUA Field in Central Sumatera Permatasari, Intan; Erfando, Tomi; Satria, Muhammad Yogi; Hardiyanto, Hardiyanto; Astsauri, Tengku Mohammad Sofyan
Scientific Contributions Oil and Gas Vol 43, No 1 (2020)
Publisher : PPPTMGB "LEMIGAS"

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (513.35 KB) | DOI: 10.29017/SCOG.43.1.525

Abstract

RUA field is classified into heavy oil reservoir type due to the high viscosity value and low API degree . This causes the RUA field can not be produced conventionally. the solution of this problem is to apply steam or thermal injection into reservoir which could reduce the viscosity of the heavy oil (Bera Babadagli, 2015). One of the best EOR methods that has been proven to overcome this issue is using CSS method (Suranto et al., 2020). During the production period, the CSS process can affect the viscosity of the oil by increasing the temperature of the oil in the reservoir. In one production well, cyclic work are applied periodically, its called repeated cyclic (J. J. Sheng, 2013). This is because time of reservoir temperature stays above the baseline temperature reservoir shortly. Even though the cyclic already done repeatedly, there is still a decrease of oil production, different peak reservoir temperatures, and found the possibility of pump damage after the cycle job which led to the need for analysis on these issues. The analysis was performed by looking at the historical production data, historical reservoir temperature data, and production pump work data in the RUA field. After a production history data that reprsentative analyzed, it was found that teh production after cyclic there is increasing, and there is also a decline from the previous cyclic production. Based on the results of the production analysis, it was found that 53.24% of the production wells in the RUA field were already in the ramp down stage and 46.75% were already in the ramp-up stage. Meanwhile, the average HET for regular cyclic jobs is 3-4 months and 5-6 months for long cyclic jobs. And from the pump work data, only 3 wells were damaged. This suggests that cyclic stimulation is completely safe to be performed in this field.
Co-Authors Astsauri, Tengku Mohammad Sofyan Fiki Hidayat Hardiyanto Hardiyanto Huljannah, Miftah Idham Khalid Intan Permatasari Ira Herawati, Ira Kusumastuti, Indri Lestari, Fitra Ayu Marliaty, Toety Maulana, Borry Frima Novia Rita Ramadhan, Romal Retno Safitri, Retno Satria, Muhammad Yogi