Implementasi Metode Seismik Inversi Impedansi Akustik dalam Memetakan BatuanPasir dengan Pengoptimasian Parameter error dan Korelasi Serta Mentransformasikan Penyebaran Porositas

Abstract

In determining seismic inversion acoustic impedance, must be based on research and availability of data, so that will produce an impedance acoustic volume of the results of the selection of errors and the maximum correlation. The inverse seismic method is a technique for descripting qualitatively or quantitatively a reservoir by using seismic data so that it can be used for approximate geological models. This research was conducted with the aim of implementing the seismic inversion method of acoustic impedance in mapping sand rock by optimizing parameters and identifying porosity dispersion. In this research, the comparison of bandlimited inversion method, hard constraint based model, and soft constraint based model in producing acoustic impedance has the smallest error and correlation, so that the acoustic impedance volume will be obtained. The result of an acoustic impedance inversion is made crossplot between porosity with acoustic impedance. The relationship will produce a linear equation. This equation is used to transform the volume of the acoustic impedance into the porosity. Then compared to see the reservoir characteristics of the target zone. The study area has sand with acoustic impedance 16230-20500 ft / s gr / cm 3 .