Study on the Response Characteristics of Gas Reservoir in X Area by 3D Seismic Physical Simulation

Abstract

The main reservoir of lower Miocene in X area of South China Sea is sandstone in Zhujiang Formation, and the fluid property is water saturated or gas-water same layer. At present, numerical simulation is often used to analyze the seismic response characteristics of reservoir and fluid in exploration. Based on the results of numerical simulation and seismic technology, fluid exploration has been carried out, and some results have been achieved. However, the actual seismic data is affected by many factors, such as formation conditions, acquisition, processing, etc, and the reservoir change and fluid response are easy to be destroyed. Therefore, the analysis of the seismic response characteristics of the reservoir and fluid in the actual seismic data is much more complicated than the numerical simulation analysis [Li Genyong 2008]. In order to get closer to the real seismic data and further clarify the seismic response characteristics of reservoir and fluid, we make a 3D seismic physical model which simulates real stratum and fluid bearing sand bodies in X area of South China Sea, use the actual field acquisition parameters to acquire physical modeling data, then use these data to analyze and compare the sandstone of water saturated layer and gas-water same layer in lower Miocene Zhujiang formation. Finally we summarize the seismic response characteristics of the reservoir and fluid in the lower Miocene Pearl River formation in X area of South China Sea and provide an effective method and favorable basis for the next exploration.