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Analisis Potensi Daya Listrik Pada Sumur Produksi Panas Bumi Dengan Mengunakan Metode Back Pressure Pada Unit XY Melysa, Rycha; Fitrianti, Fitrianti
JOURNAL OF EARTH ENERGY ENGINEERING Vol 6 No 1 (2017): APRIL
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.138 KB) | DOI: 10.22549/jeee.v6i1.627

Abstract

As the increasing demand of energy in indonesia, PT.Pertamina Geothermal Energy area Kamojang that is one of the companies which are engaged in geothermal power plant which contributed the need for electricity domestic with a total capacity of 235 MW with consisting of 5 units of steam power plants electricity.But to produce the electrical power needs to be done a calculation about the potential electrical power for every production wells, so it is necessary to do back pressure production test for every production wells.Back pressure production test was conducted to obtain capability of geothermal production well, it is necessary to know the output curve of well production , back pressureproductionproduction test done by closing the wells first untill wellhead pressure reach a stability and then produce well with setting wellhead pressure at different wellhead pressure until it achieve stability for each setting of the wellhead pressure.The result of back pressure production test for every production wells in unit “XY” that the maximum mass flowof XY-1, XY-2, XY-3, and XY-4 wells at 10 kg/cm² are 28,49 tons/hour, 103,72 tons/hour, 175,31 tons/hour and 68,97 tons/hour. So the maximum potential for unit “XY” is 50 MW with total mass flow is about 373,04 kg/cm².
Prediksi Kinerja Steamflood Dengan Metode Myhill-Stegemeier dan Gomaa di Area R Duri Steamflood (DSF) Melysa, Rycha
JOURNAL OF EARTH ENERGY ENGINEERING Vol 5 No 2 (2016): OCTOBER
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22549/jeee.v5i2.478

Abstract

Steamflood constitutes one of method Enhanced Oil Recovery (EOR) by injected steam with quality and particular flow rate kontinyu into reservoir. Its aim is increase oil mobility at reservoir by downs viscosity to produced passes through producer. Before does simulation exhaustively, there is it is better does to predict performance a steamfloods reservoir by analytic simple one. This studies compares two simple methods in prediction steamfloods reservoir performance by use of data historical on area R Duri Steamflood (DSF). Gomaas method utilizes many graph have already at previous generalizing but just applies on field with given characteristic limitation. Then Myhill Stegemeier modifies equation that made by Mandl and Volek to interpose that displacement form in reservoir is frontal displacement one dimension yawns to oil. Both of that method have excess and its lack each. Compares two simple methods in predicting reservoir performance steamflood using historical data on the area "R" Steamflood Duri. Gomaa method using some charts that have been generalized before but only apply to the courts to limit certain characteristics. Myhill-Stegemeier then modify the equations created by Mandl and Volek to argue that the form of displacement in the reservoir is a one-dimensional frontal displacement steam to oil. Both methods have advantages and disadvantages of each. Both methods produce a number of different oil recovery. The cumulative oil recovery methods amounted to 1378917 Stegemeiers Myhill-STB (76% of OOIP) and Method Gomaa of the STB 999 072 (55% of OOIP). Comparison of steam-oil (FSO) obtained in Method Myhill is a comparison of cumulative, it is evident from the constant value (FSO) obtained from the first year until the 10th year. Gomaa is different from the method they are relatively oil-vapor ratio (FSO) obtained.
Analisa Dan Optimasi Recovery Perolehan Cadangan Gas Dengan Melihat Parameter Design Sumur Pada Struktur Musi Barat Di Lapangan Riyadh Melysa, Rycha; Khalid, Idham
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 (723.579 KB) | DOI: 10.22549/jeee.v6i2.1013

Abstract

Lapangan Riyadh merupakan lapangan yang memiliki potensi cadangan gas. Berdasarkan hasil perkiraan cadangan secara volumetric lapangan Riyadh memiliki cadangan sebesar 686.334 Bcf. Lapangan Riyadh ini memiliki 28 sumur yaitu hanya 20 sumur yang berproduksi hingga tahun 2016. Perolehan gas pada lapangan Riyadh hingga akhir tahun 2016 yaitu sebesar 505.336 Bcf. Maka perlu dilakukan perkiraan cadangan berdasarkan material balance dan melakukan optimasi recovery perolehan gas sesuai dengan design sumur di lapangan riyadh. Pada lapangan Riyadh ini dilakukan analisa forecast tekanan terhadap kumulatif produksi gas untuk mengetahui tekanan pada kumulatif produksi gas terhadap waktu. Selanjutnya dilakukan perhitungan perkiraan cadangan dengan metode plot P/z vs Gp dan dilakukan identifikasi driving mechanism. Dari hasil perkiraan cadangan dapat dihitung perkiraan recovery factor current dan recovery factor predict . tahap optimasi recovery perolehan gas dilakukan dengan prosper dan mbal software. Hasil perkiraan cadangan gas dengan material balance plot P/z vs Gp sebesar 702.895 Bcf. Analisa plot P/z vs Gp dapat diketahui bahwa reservoir pada lapangan Riyadh dipengaruhi aquifer influx sehingga dapat di indikasi dari hasil metode cole plot, driving mechanism lapangan Riyadh ini adalah strong water drive .kemudian dari hasil perhitungan cadangan plot P/z vs Gp untuk RF current sebesar 72 % dengan RF prediksi 82 % berdasarkan manual. Setelah dilakukan simulasi Mbal recovery perolehan gas pada lapangan Riyadh dapat di optimasi sampai 85 % berdasarkan parameter design sumur yaitu tubing 3 inch.