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Sumur KS-01 berada pada lapangan TI yang merupakan area lapangan
pengembangan minyak dan gas bumi yang berada didaerah Cekungan Kutai,
Kalimantan Timur.
Berdasarkan data produksi minyak dan air maka dianalisis dengan
menggunakan Chans Diagnostic plot untuk memperoleh water oil ratio dan
water oil ratio derivative agar mengidentifikasi penyebab dari water cut yang
awalnya stabil lalu mengalami kenaikkan. Dengan Decline Curve Analiysis dapat
mengetahui sisa cadangan dan meramalkan lamanya umur sumur sampai pada
batas ekonomisnya dapat diproduksi dimasa mendatang, untuk penentuan jenis
decline curve dilakukan dengan metode Trial Error and X
2 Chi Square.
Perhitungan Inflow Perfomance Relationship dilakukan untuk mengetahui kinerja
sumur minyak yang dapat menjelaskan hubungan antara laju produksi sumur
terhadap tekanan alir dasar sumur.
Sumur KS-01 mengalami perpindahan normal dengan water oil ratio
yang tinggi dan tidak menunjukan terjadinya water coning atau channeling.
Dengan analisa Decline Curve diperolehlah nilai ERR adalah 56,071 MSTB,
dengan waktu pengambilan sampai batas economic limit dan EUR sebesar 221,44
MSTB dengan perkiraan waktu sampai 3 tahun 7 bulan. Didapatkan Qomax sebesar
131,44 BOPD, Qwmax sebesar 32,22 BWPD dan (Qt) sebesar 163,67 BFPD pada
tekanan 1652 psia dikondisi sumur sekarang

The KS-01 well is located in the TI field, which is an oil and gas
development field located in the Kutai Basin, East Kalimantan.
Based on the oil and water production data, it was analyzed using Chan's
Diagnostic plot to obtain the water oil ratio and water oil ratio derivative in order
to identify the cause of the water cut which was initially stable and then increased.
With Decline Curve Analysis, we can find out the remaining reserves and predict
the age of the well until the economic limit can be produced in the future, to
determine the type of decline curve using the Trial Error and X2 Chi Square
method. Calculation of Inflow Performance Relationship is carried out to
determine the performance of oil wells which can explain the relationship between
the rate of well production and the bottom flow pressure of the well.
The well KS-01 experienced normal displacement with a high water-oil
ratio and did not show any water coning or channeling. With the Decline Curve
analysis, the ERR value is 56,071 MSTB, with a collection time of up to the
economic limit and EUR 221.44 MSTB with an estimated time of up to 3 years 7
months. Obtained Qomax of 131.44 BOPD, Qwmax of 32.22 BWPD and (Qt) of
163.67 BFPD at a pressure of 1652 psia in the current well condition