KLEA LATUAN, FERDINANDUS (2022) ANALISIS ALIRAN TRACER ANTAR SUMUR UNTUK MENENTUKAN KARAKTERISTIK LAPISAN RESERVOIR MENGGUNAKAN PEMODELAN SATU DIMENSI TRACER ELUTION CURVE ANALYSIS (TECA). Masters thesis, UPN 'Veteran" Yogyakarta.
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Abstract
vi
RINGKASAN
Lapangan “F” telah berproduksi selama 60 tahun sejak tahun 1961. Pada
tahun 1995, metode perolehan minyak pada lapangan ini sudah mencapai pada
tahap waterflooding. Pada akhir tahun 2018, dilakukan tracer test sebagai acuan
dalam melakukan injeksi polymer yang akan dilakukan pada tahun 2020. Pada
program tracer test, chemical tracer diinjeksikan pada Reservoir C melalui sumur
injeksi F-01 kemudian diamati melalui 6 sumur monitoring (F-02, F-03, F-04, F�05, F-06, dan F-07). Pola injeksi adalah inverted-7 spots dimana sumur injeksi
berada di tengah-tengah sumur-sumur monitoring. Dengan mengacu pada model
matematika yang disusun oleh Abbaszadeh dan Brigham (1983), pemodelan satu
dimensi Tracer Elution Curve Analysis (TECA) dilakukan untuk menjelaskan
jumlah sub lapisan pada reservoir Zona C dan karakteristik dari masing-masing
lapisan tersebut (ketebalan, porositas, dan permeabilitas).
Penelitian dimulai dengan tahap inventarisasi dan quality control data;
validasi material balance massa tracer; input data ke dalam program TECA;
menentukan jumlah peak konsentrasi tracer sebagai representatif jumlah tracer
flow unit (layer) dari sumur injeksi menuju masing-masing sumur monitoring;
kalkulasi streamline serta porositas, ketebalan, dan permeabilitas dari masing�msing tracer flow unit; update model dinamis; serta validasi breakthrough time
tracer pada model dinamis.
Analisis hasil tracer test dengan pemodelan satu dimensi Tracer Elution
Curve Analysis (TECA) telah memberikan gambaran mengenai konektivitas antar
sumur dan heterogenitas reservoir di area pattern injeksi sehingga hasil penelitian
dapat digunakan untuk optimasi pelaksanaan waterflooding dan perencanaan
injeksi polymer. Variasi data breakthrough time, variasi trend kurva breakthrough
time, dan variasi jumlah peak konsentrasi tracer pada masing-masing sumur
monitoring sebagai ouput program TECA merupakan fungsi dari heterogenitas
reservoir dan perbedaan interval perforasi. Breakthrough time tracer yang berbeda�beda merepresentasikan heterogenitas reservoir. Oleh karena itu, ketika model
dinamis sudah menampilkan profil breakthrough time yang mendekati waktu
breakthrough data aktual, maka model dinamis dapat dinyatakan sudah cukup valid
untuk menggambarkan heterogenitas reservoir.
Kata kunci: tracer test, tracer elution curve analysis, tracer flow unit,
heterogenitas reservoir
vii
ABSTRACT
The “F” oil field has been produced for 60 years since 1961. In 1995, the oil
recovery of the field was already at waterflooding phase. In December 2018, a
tracer test was conducted as the guidance for polymer injection that will be done
in 2020. In the tracer test program, a chemical tracer was injected through the F�01 injection well and the concentration was observed at 6 monitoring wells
monitoring (F-02, F-03, F-04, F-05, F-06, and F-07). The injection pattern is
inverted-7 spots, where the injection well is located in the middle of monitoring
wells. By referring to the mathematical model proposed by Abbaszadeh and
Brigham (1983), a one dimension modeling of Tracer Elution Curve Analysis
(TECA) was done to describe reservoir layering characterization in C sand (net
pay, porosity, and permeability of each layer).
The research begins with data preparation and quality control; material
balance validation of tracer concentration; data input to the TECA program; the
number of peak determination as to the function of layer number or tracer flow unit
number from the injection well to the monitoring wells; streamline and properties
calculation by TECA for each tracer flow unit; updating dynamic model; and the
breakthrough time validation of the updated dynamic model.
The tracer test analysis by using one dimension modeling of Tracer Elution
Curve Analysis (TECA) has given us an overview of reservoir connectivity and
heterogeneity in the pattern area. Hence, the output parameters can be used in
waterflooding and polymer injection optimization. The breakthrough time, the
trendline of tracer breakthrough curve, dan the number of peak concentration
variation as the output of TECA is the function of reservoir heterogeneity and
perforation interval difference. Since the breakthrough time of the dynamic model
as the reflection of the reservoir's heterogeneity is close to the actual data, it can
be concluded that the updated dynamic model is valid to be used in reservoir
heterogeneity overview.
Keywords: tracer test, tracer elution curve analysis, tracer flow unit, reservoir
heterogeneity
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | tracer test, tracer elution curve analysis, tracer flow unit, heterogenitas reservoir |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 11 Apr 2022 06:46 |
| Last Modified: | 07 Sep 2022 04:20 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/29459 |
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