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All Journal Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Petro : Jurnal Ilmiah Teknik Perminyakan
Lestari Said
Universitas Trisakti
Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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PENENTUAN ISI AWAL MINYAK DITEMPAT DENGAN MENGGUNAKAN METODEMATERIAL BALANCE DAN VOLUMETRIK PADA RESERVOIR ADZ Dikky Fathurochman Sidiq; Lestari Said
Journal of Mechanical Engineering and Mechatronics Vol 3, No 2 (2018): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.065 KB) | DOI: 10.33021/jmem.v3i2.540

Abstract

Determination of the initial oil content of a reservoir starts from exploration activities. In the initial stage, the determination of the initial oil reserves is determined. This aims to determine whether the project can be profitable for the company or not. Over time the determination of the initial contents of the oil continues to be carried out to improve the accuracy of calculations using the material balance method.In the reservoir "ADZ" the type of reservoir is an undersaturated reservoir. This is because the initial pressure in 1980 was 2762.74 psia, while the bubble point pressure was 1625.8 psia. Until 2015 this reservoir was still above the bubble point pressure with a pressure of 1783.55 psia, this reservoir also had no gas cap in the initial conditions. The drive mechanism that works on this field is the solution for the gas drive.Calculation of the initial content of oil in this final project uses 4 methods, namely volumetric method, material balance method, straight line, and Mbal software. Using the volumetric method, the initial oil reserves obtained at the place amounted to 174063462 STB, while the calculation of the initial oil reserves in place using the material balance method was 176497285 STB. The percentage difference in the initial content of oil between the methods is <5%.
PENENTUAN ISI AWAL MINYAK DI TEMPAT DENGAN METODE VOLUMETRIK DAN MATERIAL BALANCE GARIS LURUS HAVLENA-ODEH DAN PERKIRAAN PRODUKSI ZONA ENH PADA LAPANGAN X Eoremila Ninetu Hartantyo; Lestari Said
PETRO:Jurnal Ilmiah Teknik Perminyakan Vol. 5 No. 1 (2016): April
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.6 KB) | DOI: 10.25105/petro.v5i1.1978

Abstract

The purpose of this thesis is to calculate the original oil in place of ENH zone in X field. There are two methods to calculate the original oil in place of ENH zone, which is volumetric method and material balance method. From the calculation of original oil in place of ENH zone using volumetric method is 5.860.310 STB.In Havlena - Odeh straight line material balance method needs the number of water influx. The water influx can be determine using Van-Everdingen Hurst method. The constant number of water influx of ENH zone is 311 BBL/psia. The original oil in place calculation of ENH zone using material balance method is 6.000.000 STB. Decline curve analysis is a method to determine the production performance and estimate ultimate recovery (EUR). By knowing the economic limit rate of ENH zone at 40 BOPD, it can be searched the oil rate and cumulative oil production of ENH zone. The economic limit rate of ENH is reached in March 2019 with recovery factor at 57,95%.Keywords: original oil in place, volumetric, material balance, decline curve analysis
PERHITUNGAN ISI AWAL MINYAK DI TEMPAT DAN PERHITUNGAN RECOVERY FACTOR SEBELUM DAN SESUDAH INJEKSI AIR PADA RESERVOIR ALFA Lestari Said; Margareht sri Wahyuni
PETRO:Jurnal Ilmiah Teknik Perminyakan Vol. 5 No. 2 (2016): Agustus
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.177 KB) | DOI: 10.25105/petro.v5i2.2363

Abstract

Dilakukan perhitungan isi awal minyak di tempat atau original oil in place (OOIP) dan recovery factor sebelum dan sesudah injeksi air pada reservoir Alfa. Pada perhitungan OOIP digunakan dua metode, yaitu metode volumetrik dan material balance garis lurus. Sebelum melakukan perhitungan OOIP dengan metode material balance garis lurus, jenis mekanisme pendorong harus terlebih dahulu diketahui untuk menentukan grafik yang digunakan dalam metode material balance garis lurus. Metode penentuan jenis mekanisme pendorong, yaitu metode perhitungan drive index dan  Ganesh Thakur,.  Sedangkan untuk menghitung recovery factor sebelum dan sesudah injeksi digunakan analisa decline curve yang dilakukan secara dua tahap, yaitu tahap primary recovery dan secondary recovery (injeksi air). Analisa decline curve ditentukan dengan menggunakan status sumur produki aktif yang relatif konstan Jenis exponent decline (b) yang dipilih adalah exponential decline curve, dengan nilai rate of decline (Di) telah otomatis terhitung saat penarikan garis decline dengan  software OFM. Hasil perhitungan OOIP dengan menggunakan metode volumetric adalah sebesar 75.63 MMSTB dan untuk metode material balance garis lurus adalah sebesar 78.5 MMSTB. Sedangkan jenis mekanisme pendorong dari reservoir Alfa  adalah solution gas drive.Dan hasil analisa decline curve pada tahap primary recovery menunjukan bahwa reservoir Alfa  dapat berproduksi hingga 31 Mei 2012 dengan nilai Estimate Ultimate Recovery sebesar 24514.1 MSTB, dan Recovery Factor sebesar 31.32%. Sedangkan untuk tahap secondary recovery menunjukkan bahwa reservoir Alfa dapat berproduksi hingga 31 Maret 2022 dengan nilai Estimate Ultimate Recovery sebesar 781.314 MSTB, dan Recovery Factor sebesar 1%.
Co-Authors Dikky Fathurochman Sidiq Eoremila Ninetu Hartantyo Margareht sri Wahyuni