APLIKASI METODE HORIZON-BASED TOMOGRAPHY UNTUK PERBAIKAN MODEL KECEPATAN INTERVAL DAN IDENTIFIKASI STRUKTUR PADA PRE-STACK DEPTH MIGRATION 3D SERTA ESTIMASI CADANGAN HIDROKARBON DI LAPANGAN SBI CEKUNGAN JAWA BARAT UTARA; APPLICATION OF THE HORIZON-BASED TOMOGRAPHY METHOD TO UPDATE INTERVAL VELOCITY MODEL, TO IDENTIFY THE STRUCTURE OF PRE-STACK DEPTH MIGRATION 3D AND TO ESTIMATE THE HYDROCARBON RESERVE IN SBI FIELD NORTH WEST JAVA BASIN

SUDRA IRAWAN, Sismanto

2013 | Disertasi | Program Studi S2 Fisika

It has been done a research the seismic data processing to update the velocity model by horizon based tomography method in SBI Field, North West Java Basin. This method reduce error of seismic wave traveltime through the analyzed horizon because the existence speed of high lateral variation in research area, so that the PSDM is accurate, close to the real geology structure, and can be used for interpreting phase. There are three parameters to determine the resulting interval velocity model is accurate, namely: (1) depth Gathers was flat, (2) semblance residual moveout coincide with the axis has zero residual movout, and (3) the correspondence between image depth (horizon ) with marker wells (well seismic tie). The result of the analysis data shows: (1) interval velocities model from horizonbased tomography can update the parameter of interval velocities model that is layer

Kata Kunci : Metode horizon based-tomography; model kecepatan interval; pre-stack depth migration; estimasi cadangan hidrokarbon