PERENCANAAN INJECTION RATE WATERFLOODING UNTUK MENINGKATKAN RECOVERY FACTOR LAPANGAN FA

AULIA, FITRAH (2024) PERENCANAAN INJECTION RATE WATERFLOODING UNTUK MENINGKATKAN RECOVERY FACTOR LAPANGAN FA. Other thesis, UPN Veteran Yogyakarta.

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Abstract

vii
RINGKASAN
PERENCANAAN INJECTION RATE WATERFLOODING UNTUK
MENINGKATKAN RECOVERY FACTOR LAPANGAN FA
Oleh
Fitrah Aulia
NIM: 113200048
(Program Studi Sarjana Teknik Perminyakan)
Lapangan FA telah berproduksi sejak tahun 1995 dengan 9 sumur existing dan total
produksi harian sebesar 900 BOPD dengan OOIP sebesar 91.69 MMSTB.
Tantangan yang dihadapi termasuk laju produksi yang terus menurun dan adanya
produksi air (watercut) berlebih, menyebabkan masalah di permukaan dan
lingkungan. Terdapat 5 sumur suspend di lapangan ini, sehingga diperlukan
optimasi melalui waterflooding dengan mengonversi sumur suspend menjadi sumur
injeksi dan reaktivasi menjadi sumur produksi. Tujuan penelitian ini adalah
menganalisis laju injeksi optimum untuk memaksimalkan sweep efficiency dan
recovery factor.
Tahapan pekerjaan dimulai dengan perhitungan remaining reserve dan recovery
factor, dilanjutkan dengan history matching untuk tekanan reservoir, laju alir, dan
kumulatif produksi minyak, air, dan gas. Setelah itu, ditentukan sumur suspend
yang akan dikonversi menjadi sumur injeksi dan direaktivasi menjadi sumur
produksi melalui analisa scatter plot diagram serta peta iso saturasi dan iso
permeabilitas. Sumur injeksi ditempatkan untuk menyapu area dengan saturasi
minyak tinggi. Simulasi dilakukan dalam 3 skenario dengan kapasitas water
treatment yang berbeda (80%, 65%, dan 45%) dan laju injeksi air yang bervariasi
(150 BWPD, 220 BWPD, dan 270 BWPD).
Hasil menunjukkan bahwa skenario dengan hasil kenaikan RF tertinggi adalah
skenario ketiga, dengan konversi 5 sumur suspend menjadi 2 sumur produksi dan 3
sumur injeksi, kapasitas water treatment sebesar 45% (450 BWPD), dan laju injeksi
270 BWPD. Ini meningkatkan produksi harian dari 900 BPD menjadi 986 BOPD
dan recovery factor dari 35.47% menjadi 39.60%, menghasilkan kenaikan produksi
harian sebesar 86 BOPD dan peningkatan recovery factor sebesar 4.13%.
Kata Kunci: Waterflooding, Rate Injeksi, Recovery Factor
viii
ABSTRACT
INJECTION RATE PLANNING FOR WATERFLOODING TO INCREASE
RECOVERY FACTOR IN FA FIELD
By
Fitrah Aulia
NIM: 113200048
(Petroleum Engineering Undergraduated Program)
The FA field has been in production since 1995 with 9 existing wells and a total
daily production of 900 BOPD, and an OOIP of 91.69 MMSTB. Challenges faced
include a continuous decline in production rate and excessive water production
(watercut), causing surface and environmental issues. There are 5 suspended wells
in this field, necessitating optimization through waterflooding by converting
suspended wells into injection wells and reactivating them into production wells.
The objective of this study is to analyze the optimum injection rate to maximize
sweep efficiency and recovery factor.
The work stages begin with the calculation of remaining reserves and recovery
factor, followed by history matching for reservoir pressure, flow rate, and
cumulative production of oil, water, and gas. Subsequently, suspended wells to be
converted into injection wells and reactivated into production wells are determined
through scatter plot diagram analysis as well as iso saturation and iso permeability
maps. Injection wells are placed to sweep areas with high oil saturation.
Simulations were conducted in 3 scenarios with different water treatment capacities
(80%, 65%, and 45%) and varying water injection rates (150 BWPD, 220 BWPD,
and 270 BWPD).
The results show that the scenario with the highest RF increase is the third scenario,
which involves converting 5 suspended wells into 2 production wells and 3 injection
wells, with a water treatment capacity of 45% (450 BWPD) and an injection rate
of 270 BWPD. This increases daily production from 900 BPD to 986 BOPD and
the recovery factor from 35.47% to 39.60%, resulting in a daily production increase
of 86 BOPD and a recovery factor increase of 4.13%.
Keywords: Waterflooding, Injection Rate, Recovery Factor

Item Type: Thesis (Other)
Uncontrolled Keywords: Waterflooding, Injection Rate, Recovery Factor
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Eko Yuli
Date Deposited: 24 Jul 2024 03:37
Last Modified: 24 Jul 2024 03:37
URI: http://eprints.upnyk.ac.id/id/eprint/40383

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