计算机辅助地震解释系统模拟试验研究

石油勘探中,三维地震数据的显示已成为研究复杂地层构造区域的公认的勘探工具。这种技术即是八十年代兴起的计算机辅助地震数据解释系统(CASI)。它能将庞大的地震数据在屏幕上进行各种显示,使解释人员可从烦杂而费时的手工劳动中解脱,使解释精度和工效提高,同时能进一步揭示地下一些复杂的地质构造情况,使勘探打井的命中率提高。

Simulation Experiment for Computer-aided Seismic Interpretation System

In oil exploration, 3D seismic data display has become an established means for studying complicated structural and stratigraphical regions. This technique is known as the system of Computer-aided Seismic Interpretation (CASI) which took shape in the beginning of the 80's. It enables various large-scale seismic data to be displayed on the screen with high accuracy and efficiency, and thus not only liberating interpreters from troublesome, complicated and time-consuming mannual labour but also enhencing the revelation of extremely complex underground geological structures. As a result, the percentage of hits of wells is greatly increased. This paper makes a detailed study of some of the key functions in CASI. An interactive display method is introduced. The displays include vertical sections, horizontal slices, composite sections and stereogram, thus helping interpreters analyse and interpret subsurface structures effectively and quickly. The paper also gives the simulated experimental results of 9 displays in the 3D Data on the PDP-11/24 computer system and PC-1000 digital image processing system.