Reservoirs resistivity correction factor in low resistivity pyritic sandstone reservoirs

Winardi, S. and Surjono, S.S. and Amijaya, D.H. and Suryanto, W. (2021) Reservoirs resistivity correction factor in low resistivity pyritic sandstone reservoirs. In: International Conference on Geological Engineering and Geosciences, 16-18 March 2021, Yogyakarta.

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Abstract

The presence of pyrite in sandstone reservoirs will cause a problem known as low resistivity reservoirs case. The impact of pyrite volume in sandstone reservoirs is very important to be determined, especially to conduct its resistivity correction factor (Rcf). This research was done in the laboratory used nine sandstone pseudo-cores with various pyrite contents. Some data parameters such as voltage (V) and current (I) are directly measured and others (resistance R and reservoirs resistivity Rt) are calculated. The resistivity of pseudo-core data is calculated using the combined method between Ohm Law and Wenner. The result of this research shows that pyrite will reduce sandstone reservoirs resistivity exponentially. Pyrite will significantly reduce reservoirs resistivity if its presence > 4 and the Rt needs to be corrected. Plotting data between Rt and pyrite volume number for every Sw line can guide us to build a resistivity correction factor (Rcf). This Rcf will drive us to obtain the original resistivity reservoirs (Rto) from apparent well log resistivity reading (Ra) in case of low resistivity caused by pyrite mineral. © Published under licence by IOP Publishing Ltd.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Cited by: 1; All Open Access, Gold Open Access
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Divisions: Faculty of Engineering > Geological Engineering Department
Depositing User: Sri JUNANDI
Date Deposited: 03 Oct 2024 08:06
Last Modified: 03 Oct 2024 08:06
URI: https://ir.lib.ugm.ac.id/id/eprint/3989

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