炭酸塩岩貯留岩の特性評価
地震探査データと坑井データによるケーススタディー
1993 年 58 巻 1 号 p. 50-57
詳細
1993 年 58 巻 1 号 p. 50-57
A detailed delineation of structural configuration for the 3DA structure, which is located in the Gulf of Moattama, offshore Myanmar, was required for the current evaluation work. For this study, 650 kilometers of 2-D seismic data covering the structure were reprocessed and acoustic velocity measurements of the well core samples were made.
The reprocessing and reinterpretation provided more reliable structural map and porosity distribution map of the reservoir of the 3DA structure. The structure composed of a carbonate build up exhibits a four-way closure. AVO analysis was applied to define a productive area from non-productive area of the structure. Also, seismic interval velocities were used to produce an average porosity map of the gas-bearing carbonate reservoir of the structure. The results made it possible to obtain more reliable estimation of the rock volume and the porosity distribution for the 3DA structure.
