The Application of Lamda-Mu-Rho Seismic Inversion for Conglomerate Reservoir Characterization in Melandong Field, Northwest Java Basin

Muhammad Ridha Adhari


Lamda (λ) Mu (μ) Rho (ρ) seismic inversion method has been applied to identify the distribution of
conglomerate reservoir in Melandong Field, Northwest Java Basin. This research used 3D pre-stack time
migration seismic dataset with one well data and a checkshot data. A sensitivity test analysis was done to
see the validity of the dataset and well seismic tie has been applied before generating a background model
for the inversion processes. The outcomes of this research show that Lamda Rho ( λρ) inversion can be used
to detect the presence of hydrocarbon in a conglomerate rock and it is shown by value ranging between 33-
39 (GPA*(Gr/cc)). Besides that, Mu Rho (μρ) inversion can indicate the rock type and it shows that
conglomerate has higher value (26 – 32 (GPA*(Gr/cc)) than claystone (20-26 (GPA*(Gr/cc)). By combining
both Lamda-Rho and Mu-Rho inversion results, the distribution of the reservoir rock and hydrocarbon can
easily be detected and mapped.

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