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Aplikasi Kurva Derivative Dalam Penentuan Batas Reservoir Pada Sistem Reservoir Lensa Hidayat, Fiki
JOURNAL OF EARTH ENERGY ENGINEERING Vol 5 No 1 (2016): APRIL
Publisher : UIR PRESS

Reservoir lensa merupakan reservoir yang memiliki bentuk menyerupai lensa dan memiliki sifat reservoir yang tertutup. Saat ini, reservoir dengan tipe lensa mulai banyak diproduksikan. Studi mengenai reservoir lensapun telah banyak dilakukan untuk dapat lebih memahami kelakuan reservoir ini. Untuk memperoleh analisa lebih baik mengenai reservoir lensa ini diperlukan studi-studi yang tepat sehingga pengembangan lapangan dengan reservoir ini berjalan dengan baik. Analisa yang dilakukan salah satunya adalah analisa mengenai batas reservoir dengan menggunakan kurva derivative pada reservoir lensa ini. Untuk itu, yang perlu dilakukan adalah membuat model reservoir lensa dan melakukan simulasi untuk dapat memperkirakan kelakuan dari reservoir ini. Data yang diperlukan antara lain: tekanan reservoir, waktu produksi, batas reservoir , properti fluida, dan properti batuan. Dari data tersebut kemudian digunakan software simulasi reservoir CMG untuk memperoleh data tekanan dari sumur uji dan software Saphire untuk interpretasi dari data tekanan yang diperoleh. Pada penelitian  ini akan dibahas tentang identifikasi dan analisa batas reservoir untuk reservoir dengan tipe lensa dengan menggunakan model ideal pada software Saphire. Selain itu, akan dibahas pula bentuk kurva derivative yang dihasilkan dari reservoir lensa.

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

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

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

STUDY ON CO2 SOAKING TIME AND HUFF AND PUFF INJECTION CYCLE EFFECT IN TIGHT PERMEABILITY RESERVOIR Abdurrahman, Muslim; Ferizal, Fiki H.; Saputra, Dadan D.S.M.; P. Sari, Riri
Scientific Contributions Oil and Gas Vol 42, No 1 (2019)
Publisher : PPPTMGB "LEMIGAS"

Oil and gas industry is struggling to improve oil production using several methods. CO2 injection is one of the advance proven technology to enhance oil production in numerous oil field in the world. Key parameters during CO2 injection are viscosity reduction and oil swelling which can improve oil production. CO2 injection also has high possibility to be applied in Indonesia's oil fields due to abundant CO2 sources surrounding oil fields. R field is one of reservoir candidates that appropriate for CO2 injection. It has a low pressure and low oil recovery due to low permeability (1-26,2 mD).The CO2 injection technique used in this study was huff and puff that consist of injection, shut in, and production phases. The simulation was conducted using compositional simulator. There were two parameters chosen to be analyzed, which were soaking time and injection cycle. The objective of this study is to know the CO2 huff and puff perfomance for improving oil recovery on low permeability reservoir. The result of the soaking time cases yields optimum condition in 21 days. For the case of injection cycle, the result for optimum condition is in 2 injection cycles. The recovery factor (RF) for both optimum condition reaches 22.96% from the baseline without gas injection (RF 5.82%).

Biopolimer dari Bahan Organik sebagai Biopolimer pada Metode EOR Lestari, Fitra Ayu; Afdhol, Muhammad Khairul; Fiki, Hidayat; Tomi, Erfando
Lembaran publikasi minyak dan gas bumi Vol 54, No 3 (2020)
Publisher : PPPTMGB "LEMIGAS"

Rendahnya area sweep efficiency selama waterflooding merupakan salah satu masalah dalam meningkatkan produksi minyak. Sweep efficiency waterfloodÂ kurang efektif dikarenakan permeabilitas air yang besar di batuan. Viskositas air bisa meningkat jika menambahkan polimer pada air sehingga bisa mengurangi permeabilitas air dibatuan. Injeksi polimer cukup menjanjikan untuk meningkatkan produksi minyak. Biopolimer merupakan salah satu jenis polimer yang berasal dari mahkluk hidup dengan komponen utama penyusunnya adalah karbohidrat. Bahan yang sering dijadikan biopolimer dan terdapat banyak di alam adalah polisakarida. Untuk mendapatkan polisakarida maka dilakukan ekstraksi pada bahan yang digunakan. Ekstraksi yang digunakan memiliki banyak jenis yang akan mempengaruhi biopolimer yang terbentuk. Pada review ini, berbagai aspek biopolimer dibahas mulai dari sumber biopolimer, jenis ekstraksi, dan serta uji reologi biopolimer.

Aplikasi Kurva Derivative Dalam Penentuan Batas Reservoir Pada Sistem Reservoir Lensa Fiki Hidayat
Journal of Earth Energy Engineering Vol. 5 No. 1 (2016): APRIL
Publisher : Universitas Islam Riau (UIR) Press

Reservoir lensa merupakan reservoir yang memiliki bentuk menyerupai lensa dan memiliki sifat reservoir yang tertutup. Saat ini, reservoir dengan tipe lensa mulai banyak diproduksikan. Studi mengenai reservoir lensapun telah banyak dilakukan untuk dapat lebih memahami kelakuan reservoir ini. Untuk memperoleh analisa lebih baik mengenai reservoir lensa ini diperlukan studi-studi yang tepat sehingga pengembangan lapangan dengan reservoir ini berjalan dengan baik. Analisa yang dilakukan salah satunya adalah analisa mengenai batas reservoir dengan menggunakan kurva derivative pada reservoir lensa ini. Untuk itu, yang perlu dilakukan adalah membuat model reservoir lensa dan melakukan simulasi untuk dapat memperkirakan kelakuan dari reservoir ini. Data yang diperlukan antara lain: tekanan reservoir, waktu produksi, batas reservoir , properti fluida, dan properti batuan. Dari data tersebut kemudian digunakan software simulasi reservoir CMG untuk memperoleh data tekanan dari sumur uji dan software Saphire untuk interpretasi dari data tekanan yang diperoleh. Pada penelitian ini akan dibahas tentang identifikasi dan analisa batas reservoir untuk reservoir dengan tipe lensa dengan menggunakan model ideal pada software Saphire. Selain itu, akan dibahas pula bentuk kurva derivative yang dihasilkan dari reservoir lensa.

Spontaneous Imbibition Test of Low Salinity Injection at Low Saline Waxy Crude Carbonate Fiki Hidayat; Tomi Erfando; Borry Frima Maulana
Journal of Earth Energy Engineering Vol. 7 No. 2 (2018): OCTOBER
Publisher : Universitas Islam Riau (UIR) Press

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

Effects of Various Steam Flooding Injection Patterns and Steam Quality to Recovery Factor Indri Kusumastuti; Tomi Erfando; Fiki Hidayat
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

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.

Application of Pineapple Skin Waste as a Source of Biosolvent for Use as Wax Inhibitor Muhammad Khairul Afdhol; Tomi Erfando; Fiki Hidayat; Rosdanelli Hasibuan; Muhammad Yudatama Hasibuan; Chalidah Pratiwi Siregar
Journal of Earth Energy Engineering Vol. 9 No. 2 (2020): OCTOBER
Publisher : Universitas Islam Riau (UIR) Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jeee.2020.3922

Wax paraffin deposition is a problem faced in the pipeline for petroleum industries that they blockage the partial or full inside the pipe, which will decrease the production rate. One of the treatments is to use the preventive methods called wax inhibitors which are expected to inhibit the crystallization of paraffin wax, and bio-solvent is included. Hydrolysis and fermentation technique are used to produced bio-solvent. Hydrolysis aims to break lignin and hemicellulose, damage the crystal structure, and increase the porosity of the material. At the same time, the occurrence of pentose changes and some glucose into ethanol is present in the fermentation process. Then, purified by the distillation process to obtain bio solvent products that are applied with waxy crude oil can reduce the pour point value of crude oil. From the hydrolysis process with five variations of acid percentage, the amount of reducing sugars increase. By increasing temperature from 50 ° C to 100 ° C, the reducing sugars continues to increase until it reaches the optimal point of 18.2 ° Brix. The amount of inoculant also affects the level of bio-solvent where the optimum results using inoculants are 0.015 g/mL, which produces 6% levels of bioethanol. The high ethanol content of 2% had a density value of 0.979 g/mL. The best °API at 5% is 13.901, and the average value is about 13.0945, where the best viscosity values for ethanol content of 6% are 0.814. Bioethanol testing using waxy crude oil is carried out with the bioethanol content of 6%. The addition of the ethanol contents only decreased the pour point 2-3℃. At sample, #LGK19 experienced a 3°C drop in pour point from 45°C to 42°C. Therefore, it can be concluded that bioethanol used as a solvent can potentially inhibit paraffin deposition.

The Prospect of Electrical Enhanced Oil Recovery for Heavy Oil: A Review Muhammad Khairul Afdhol; Tomi Erfando; Fiki Hidayat; Muhammad Yudatama Hasibuan; Shania Regina
Journal of Earth Energy Engineering Vol. 8 No. 2 (2019): OCTOBER
Publisher : Universitas Islam Riau (UIR) Press

This paper presents a review of electrical heating for the recovery of heavy oil which the work adopts methods used in the past and the prospects for crude oil recovery in the future. Heavy oil is one of the crude oils with API more than 22 which has the potential to overcome the current light oil crisis. However, high viscosity and density are challenges in heavy oil recovery. The method is often used to overcome these challenges by using thermal injection methods, but this method results in economic and environmental issues. The electrical heating method could be a solution to replace conventional thermal methods in which the methodology of electrical heating is to transfer heat into the reservoir due to increasing oil mobility. Because the temperature rises, it could help to reduce oil viscosity, then heavy oil will flow easily. The applications of electrical heating have been adopted in this paper where the prospects of electrical heating are carried out to be useful as guidelines of electrical heating. The challenge of electrical heating is the excessive heat will damage the formation that must be addressed in the prospect of electrical heating which must meet energy efficiency. The use of Artificial intelligence becomes a new technology to overcome problems that are often found in conventional thermal methods where this method could avoid steam breakthrough and excessive heat. Therefore, it becomes more efficient and could reduce costs.

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