Physical simulation and seismic response of subtle reservoir in the Central Junggar Basin,Northwest China
准噶尔盆地腹部隐蔽油气藏物理模拟及地震响应特征

Subtle reservoir is the main hydrocarbon type of Jurassic in the central Junggar Basin. Lower resolution and faint reflection characteristics of seismic data restrict the identification and evaluation of low relief structures and lithologic traps in this area. In this paper, the geologic model of the river-delta sedimentary system was built according to sedimentary characteristics of Jurassic, and the 3D physical models of pinch-out structure, lithologic lens, channel and turbidite sand-body were made to research the characteristic changes of rock-physical properties under subsurface conditions and change rules of reservoir geophysical parameters by examination. Combined with well-log data, the relationship between wave-filed response characteristics and reservoir parameters changes has been studied via wave-field physical simulation, the ulteriorly wave-field characteristics and attribute in various conditions were analyzed.