PERKIRAAN LAPISAN PROSPEK DAN CADANGAN MINYAK MULA-MULA BERDASARKAN DATA LOG DAN SWAB TEST SUMUR EKSPLORASI “RDK-03”

KURNIAWAN, RIFQI DWI (2023) PERKIRAAN LAPISAN PROSPEK DAN CADANGAN MINYAK MULA-MULA BERDASARKAN DATA LOG DAN SWAB TEST SUMUR EKSPLORASI “RDK-03”. Other thesis, UPN "Veteran" Yogyajarta.

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Abstract

vi
RINGKASAN
Sumur RDK-03 adalah sumur yang berada di Lapangan MINERAL yang terletak
di cekungan Sumatera Tengah. Sumur ini menembus formasi Bekasap pada
kelompok Sihapas. Sumur RDK-03 merupakan sumur eksplorasi yang akan
dikembangkan maka perlu dilakukan analisa untuk menentukan lapisan prospek
dan cadangan minyak mula-mula. Data yang ada pada Sumur RDK-03 didapatkan
dari kegiatan wireline logging berupa data log, serta data-data pendukung lain
berupa data swab test produksi, header log, analisa air, dan data core.
Analisa petrofisik dilakukan untuk menentukan lapisan prospek dan cadangan
minyak mula-mula dengan melakukan analisa kualitatif menentukan kedalaman
zona prospek dengan melihat pada chart log yang ada, selanjutnya analisa
kuantitatif dengan menghitung parameter-parameter seperti volume shale,
porositas, dan saturasi air, kemudian dilakukan analisa cut off dan reservoir
lumping yang digunakan dalam perhitungan cadangan minyak mula-mula Sumur
RDK-03.
Hasil dari analisa kualitatif yang dilakukan didapatkan kedalaman lapisan prospek
pada Yellow Zone (3834 ft – 3879 ft), Green Zone (3885 ft – 3893 ft), Gray Zone
(3904 ft – 3934 ft), Blue Zone (3954 ft – 3994 ft), Orange Zone (3999 ft – 4017 ft),
Brown Zone (4026 ft – 4061 ft), dan Purple Zone (4067 ft – 4071 ft). Analisa
kuantitatif didapatkan parameter-parameter seperti Vshale, porositas, dan saturasi
air. Untuk nilai Vshale rata-rata didapatkan sebesar 31 %, kemudian untuk
porositas rata-rata sebesar 21 %, sedangkan untuk saturasi air sebesar 55 %. Analisa
cut off didapatkan nilai cut off Vshale sebesar 57 %, lalu cut off porositas sebesar
12 %, dan cut off saturasi air sebesar 63 %. Untuk volume bulk menggunakan
metode well basis dan didapatkan nilai sebesar 8206,41 acre-ft, untuk nilai Boi yang
ada sebesar 1,15 bbl/STB dihasilkan nilai cadangan minyak mula-mula atau
Original Oil In Place sebesar 5,71 MMSTB.
Kata kunci: Lapisan Prospek, Wireline Logging, Original Oil In Place
vii
ABSTRACT
The RDK-03 well is a well located in the MINERAL Field which is located in the
Central Sumatra basin. This well penetrates the Besap formation in the Sihapas
group. The RDK-03 well is an exploratory well that will be developed, so it is
necessary to carry out an analysis to determine the prospect layer and initial oil
reserves. The data in the RDK-03 well was obtained from wireline logging activities
in the form of log data, as well as other supporting data in the form of production
swab test data, log headers, water analysis, and core data.
Petrophysical analysis is carried out to determine the prospect layer and oil
reserves first by conducting a qualitative analysis to determine the depth of the
prospect zone by looking at the existing log chart, then quantitative analysis by
calculating parameters such as shale volume, porosity, and water saturation, then
analyzing cut off and reservoir lumping used in the calculation of the initial oil
reserves of the RDK-03 Well.
The results of the qualitative analysis carried out obtained the depth of the prospect
layer in the Yellow Zone (3834 ft – 3879 ft), Green Zone (3885 ft – 3893 ft), Gray
Zone (3904 ft – 3934 ft) , Blue Zone (3954 ft – 3994 ft), Orange Zone (3999 ft –
4017 ft), Brown Zone (4026 ft – 4061 ft), and Purple Zone (4067 ft – 4071 ft).
Quantitative analysis obtained parameters such as Vshale, porosity, and water
saturation. The average Vshale value is 31%, then the average porosity is 21%,
while the water saturation is 55%. The cut-off analysis showed that the Vshale cut-
off value was 57%, then the porosity cut-off was 12%, and the water saturation cut-
off was 63%. The bulk volume used the well basis method and obtained a value of
8206,41 acre-ft, for an existing Boi value of 1.15 bbl/STB the original oil in place
value was 5,71 MMSTB.
Keywords: Prospect Layer, Wireline Logging, Original Oil In Place

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Prospect Layer, Wireline Logging, Original Oil In Place
Subjects:	T Technology > T Technology (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Eko Yuli
Date Deposited:	20 Sep 2023 01:38
Last Modified:	20 Sep 2023 01:38
URI:	http://eprints.upnyk.ac.id/id/eprint/37578

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