ANALISIS INVERSI IMPEDANSI AKUSTIK DAN MULTI ATRIBUT UNTUK MENGIDENTIFIKASI PENYEBARAN RESERVOAR PADA LAPANGAN AZURE CEKUNGAN SALAWATI, PAPUA BARAT, INDONESIA
Dwirianto, T. Marcel, Sismanto
2015 | Skripsi | FMIPA UGMSeismic inversion and multi attributes analysis have been done at “Azure” field area. Several data such as well log data, seismic data, and geological data were used to completing this research. Model based inversion method was used to proceed this inversion process with a Pre-Stack Time Migration (PSTM) seismic data as the input. Acoustic impedance volume and seismic data were used for multi attributes analysis to produce Neutron Porosity volume. An integrated interpretation by using acoustic impedance and Neutron Porosity data can be used to identify distribution of reservoir porosity. The result of the interpretation process indicates that the target zone was composed by limestone reefal. The value of acoustic impedance of the target zone is 29000 – 32000 ft.s-1.gr.cc-1and the Neutron Porosity value is 0.12-0.2 fraction. The analysis shows that the distribution of reservoir porosity is spread all around the reefal structure and its strengthen by the multi attributes analysis results by Neutron Porosity map.
Kata Kunci : Seismic inversion and multi attributes
