物理探査による炭酸塩岩貯留岩の特性把握への試み

テキサス州南西アンドリュース油田の例

抄録

Since July 1994, Japan National Oil Corporation (JNOC) has been conducting a cooperative research project with UNOCAL Corporation, in order to develop and apply geophysical technologies for porosity and permeability predication in low-permeability carbonate reservoirs. For this purpose, many geological and geophysical data were acquired at the Southwest Andrews oilfield in Texas, U.S.A..
This paper briefly introduces the Carbonate Reservoir Characterization Project with Unocal, and shows some provisional results obtained from several field experiments such as 3-D seismic, P-wave and S-wave VSP, and crosswell reflection survey. Importance of the data integration for various data set having different nature and resolution will be also stressed in order to estimate the spatial distribution of reservoir properties away from wells.