薄互层砂岩储层的人机交互预测

MAN-COMPUTER INTERACTIVE PREDICTION ON THIN-INTERBEDDED SANDSTONE RESERVOIRS

在陆相盆地勘探中，薄互层砂岩的预测一直是困扰勘探开发工作的难题。本文以高分辨率处理资料为基础，通过在ＧＥＯＱＵＥＳＴ人机联作解释系统上的地震模型正演，并绘出了目的层反射波振幅平面。进而应用实际钻井砂岩累计厚度与振幅值拟合了二者之间的关系曲线。根据这一关系曲线将振幅平面图转变为半定量砂岩预测平面图，并初步验证了钻井符合率。

In the exploration of continental basins, the prediction of thin-interbedded sandstonesis always a difficult problem which perplexes the work of exploration and development.Based on the data of high-resolution treatment in this paper,the amplitude plane of reflec-ted waves in a target stratum is orthographically demonstrated and drew by means of aseismic model on the GEOQUEST system of man-computer on-line interpretation,Andthen the cumulative sandstone thickness and amplitude value in practical drilling are ap-plied to fit their relational curve, According to this relational curve, an amplitude plan isconverted into a semi-quantitative plan for sandstone prediction,and drilling coincidenceratios are preliminarily confirmed.