CD Tesis

Optimasi Polymer Screening Untuk Eor (Enhanced Oil Recovery) Di Lapangan Minyak X Cekungan Sumatera Tengah

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The contribution of crude oil reaches 29.2% of the total energy source. The
Ministry of Energy and Mineral Resources recorded in 2014, the energy
consumption was dominated by crude oil at 41% of the total national energy
consumption or an increase of 5.4% per year. This forces Indonesia to strive to
increase crude oil production, especially for older oil fields. Field X in the Sumatra
Basin is one of the old oil fields that has been drilled since 1979 with oil reserves
of 51.94 MMBO (Million Barrels of Oil Equivalent) with a current Recovery Factor
of 27.2%. In 2020, field X experienced a production decline of 432 BOPD (Barrels
of Oil Per Day), so alternative methods need to be used to increase oil recovery.
The implementation of the EOR method can cause additional oil recovery of 2.48
to 4.95 billion barrels. The principle of EOR is to change the physical properties of
fluid and reservoir rock so that oil production can be increased. Polymer injection
is part of chemical injection that aims to increase the viscosity of water where water
acts as a displacer, thus increasing sweep efficiency against oil. This research aims
to determine the optimum conditions of the polymer screening process through the
influence of concentration and type of polymer using laboratory tests and RSM
(Response Surface Methodology). The polymer screening process is carried out in
stages, including Compatibility Test, Viscosity vs. concentration Test, Viscosity vs.
Shear Rate Test, Filtration Test, Screen Factor Test, and Thermal Stability Test,
and optimization process using RSM. The fixed variables used are the
concentration of formation water at 100 ppm and the testing temperature at 58℃.
Variations in polymer concentration (0.05% m/v, 0.15% m/v, 0.25% m/v, and 0.5%
w/v) and polymer type (Pol.1, Pol.2, Pol.3, and Pol.4) were carried out to determine
the optimum polymer conditions to be injected into field X. Based on the
compatibility test up to thermal stability, it was found that Polymer 2 has the best
performance. The final results show that polymer 2 is compatible with formation
water, has high viscosity at low concentrations, has the best thermal stability with
a decrease in viscosity after heating still within the range, which is 17.88 cP, which
is still higher than the viscosity of the field X oil, which is 14 cP. The result of the
desirability value is 0.996 or equivalent to 99.6%, also confirms the optimum
condition obtained by using Polymer 2 at a concentration of 0.50% with a viscosity
response vs. concentration of 106.002; viscosity response vs. shear rate 34.2984;
filtration response 1.12; and screen factor response 307.136.
Key Words : Optimization, Polymer Screening, EOR, RSM

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1810246961

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Teknik Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1810246961

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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