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Dalam industri minyak dan gas bumi seiring berjalannya waktu terjadipenurunan
laju alir produksi dikarenakan penurunan tekanan antara subsurface dan surface. Pada
penelitian ini akan dilakukan optimasi produktivitas sumur dengan pergantian ukuran
diameter tubing dan choke. Tujuan penelitian ini adalah mengetahui produksi
maksimum sumur R3 dengan metode wiggins pada perhitungan IPR, kemudian
mengevaluasi ukuran diameter tubing dengan metode noday analysis serta pergantian
ukuran choke.
Pada penelitian ini sebelum mengevaluasi produktivitas sumur, dilakukan analisa
laju produksi fluida untuk mendapatkan laju alir maksimum serta nilai PI dengan
melakukan perhitungan IPR (Inflow Performance Relationship). Selanjutnya dilakukan
perhitungan TPR (Tubing Performance Relationship) menggunakan analisa pergantian
ukuran diameter tubing berdasarkan kurva pressure traverse. Setelah dilakukan nodal
analysis kemudian mengevaluasi pergantian ukuran choke.
Berdasarkan hasil penelitian dari perhitungan IPR didapatkan laju alir maksimum
minyak (Qoil max) dan laju alir maksimum air (Qwater max) sebesar 754,94 STB/day
dan 2.448,54 STB/day, dengan nilai pwf sebesar 770 psi dan tekanan reservoir (Pr)
1.039 psi. Kemudian berdasarkan hasil nodal analysis yaitu perpotongan antara kurva
IPR dan TPR, ukuran diameter tubing yang sesuai dengan laju alir sebesar 754,94 Bopd
yaitu ukuran 2 1/2 inch. Kemudian analisa choke performance dengan ukuran choke
yang digunakan yaitu 16/64, 20/64, 24/64, dan 28/64. Berdasarkan perpotongan antara
kurva IPR dengan choke performance, didapatkan ukuran choke yang sesuai dengan laju
alir 754,94 Bopd yaitu 24/64.

In the oil and gas industry over time there is a decrease in the production flow rate
due to a decrease in pressure between the subsurface and surface. In this study, well
productivity optimization will be carried out by changing the size of the tubing and
choke diameters. The purpose of this study was to determine the maximum production
of the "R3" well with the wiggins method in the calculation of IPR, then evaluate the
size of the tubing diameter using the noday analysis method and change the size of the
choke.
In this study, before evaluating the productivity of the well, an analysis of the fluid
production rate was carried out to obtain the maximum flow rate and PI value by
calculating the IPR (Inflow Performance Relationship). Furthermore, the calculation
of TPR (Tubing Performance Relationship) using the analysis of the change in the
size of the tubing diameter based on the pressure traverse curve. After doing the nodal
analysis, then evaluating the change in choke size.
Based on the results of the IPR calculation, the maximum oil flow rate (Qoil max) and
maximum water flow rate (Qwater max) were 754.94 STB/day and 2,448.54 STB/day,
with a pwf value of 770 psi and reservoir pressure (Pr. ) 1,039 psi. Then based on the
results of the nodal analysis, namely the intersection between the IPR and TPR curves,
the size of the tubing diameter that corresponds to the flow rate is
754.94 Bopd, which is 2 1/2 inches. Then analyze the choke performance with the
choke sizes used, namely 16/64, 20/64, 24/64, and 28/64. Based on the intersection
between the IPR curve and the choke performance, it was found that the choke size
corresponds to the flowrate of 754.94 Bopd, which is 24/64.