ANALISIS PETROFISIKA DALAM MENENTUKAN ZONA PROSPEK HIDROKARBON PADA LAPANGAN “H” CEKUNGAN SUMATERA SELATAN

NURKAMISARI, NURKAMISARI and Sailah, Siti and Virgo, Frinsyah (2021) ANALISIS PETROFISIKA DALAM MENENTUKAN ZONA PROSPEK HIDROKARBON PADA LAPANGAN “H” CEKUNGAN SUMATERA SELATAN. Undergraduate thesis, Sriwijaya University.

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Abstract

ANALISIS PETROFISIKA DALAM MENENTUKAN ZONA PROSPEK HIDROKARBON PADA LAPANGAN “H” CEKUNGAN SUMATERA SELATAN Nurkamisari 08021181722053 Abstrak Telah dilakukan penelitian pada lapangan “H” yang berada pada formasi Batu Raja dan Talang Akar, Cekungan Sumatera Selatan. Tujuan utama dari penelitian ini untuk menentukan reservoar prospek hidrokarbon pada daerah penelitian berdasarkan analisis petrofisika. Metode pengolahan data berupa interpretasi kualitatif dan kuantitatif data log, meliputi log gamma ray, log resistivitas, log neutron dan log densitas, dengan menggunakan 6 data sumur (sumur KM1-2, KM2-3, KM3-6, KM4-7, KM5-8 dan KM6-10), selanjutnya dilakukan korelasi sumur dengan metode sekuen stratigrafi guna mengetahui keselarasan reservoar antar sumur. Parameter fisis utama dalam mendeterminasi reservoar prospek hidrokarbon adalah porositas effektif (ϕeff), saturasi air (Sw) dan volume serpih (Vclay) yang diperoleh dari analisis petrofisika. Analisis petrofisika tersebut menghasilkan litologi berupa batugamping pada formasi Batu Raja, batupasir pada formasi Talang Akar, serta lempung serpih pada masing-masing formasi, dengan nilai cut off ϕeff ≥ 7%, Sw ≤ 70% dan Vclay ≤ 50%. Hasil dari pemberian nilai cut off tersebut di peroleh reservoar prospek hidrokarbon dengan ketebalan reservoar ≥ 8 ft. Sedangkan hasil korelasi sumur digunakan dalam pembuatan peta isopach, isoporosity dan isosaturation, yang menggambarkan variasi sebaran ketebalan reservoar hidrokarbon, sebaran porositas effektif dan sebaran saturasi air pada lapisan reservoar yang selaras. Pada penelitian ini diperoleh 7 lapisan reservoar, terdiri dari lapisan reservoar hidrokarbon pada reservoar N1, N2, N4, N5, N6 dan lapisan reservoar air pada reservoar N3 dan N7. Kata kunci : analisis petrofisika, reservoar, litologi, metode sekuen stratigrafi. PETROPHYSICAL ANALYSIS IN DETERMINING THE HYDROCARBON PROSPECT ZONE IN THE “H” BASIN FIELD IN SOUTH SUMATERA SELATAN Nurkamisari 08021181722053 Abstract The research has been carried out on the "H" field located in the Batu Raja and Talang Akar formations, Basin in South Sumatra. The main objective of this research is to determine the reservoir of hydrocarbon prospects in the research area based on petrophysical analysis. The method of processing data is in the form of qualitative and quantitative interpretation of log data, including gamma ray logs, resistivity logs, neutron logs and density logs, using 6 draw well data (KM1-2, KM2-3, KM3-6, KM4-7, KM5-8 and KM6-10), furthermore, draw well correlation was carried out using the stratigraphic sequence method to determine the reservoir alignment between the draw wells. The main physical parameter in determining the hydrocarbon prospect reservoir are the effective porosity (ϕeff), water saturation (Sw), and shale volume (Vclay), obtained from petrophysical analysis. It produces lithology in the form of limestone in the Baturaja formation, sandstone in the Talang Akar formation, as well as shale clay in each formation, with a cut off value of ϕeff ≥ 7%, Sw ≤ 70% dan Vclay ≤ 50%. The result is a hydrocarbon prospect reservoir with a reservoir thickness of 8 ≥ ft. And the results of the well correlation are used in making isopach, isoporosity and isosaturation maps, which describe variations in the distribution of hydrocarbon reservoir thicknesses, effective porosity distribution and water saturation distribution in harmonized reservoir layers. In this study, seven aligned reservoir layers were obtained, consisting of a hydrocarbon reservoir layer at N1, N2, N4, N5, N6 reservoirs and a water reservoir layer at N3 and N7 reservoirs. Keyword : petrophysical analysis, reservoir, lithology, sequence stratigraphic method.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	analisis petrofisika, reservoar, litologi, metode sekuen stratigrafi.
Subjects:	Q Science > QC Physics > QC801-809 Geophysics. Cosmic physics
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	NURKAMISARI NURKAMISARI
Date Deposited:	18 Oct 2021 03:17
Last Modified:	18 Oct 2021 03:17
URI:	http://repository.unsri.ac.id/id/eprint/55947

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