鄂尔多斯盆地中南部本溪组障壁岛沉积特征及沉积相演化

Study on Sedimentary Characteristics of Barrier Island of Benxi Formation in the Mid-Southern of Ordos Basin

为寻找鄂尔多斯盆地中南部高产、高丰度天然气聚集区,本文采用沉积学的基本原理和方法,并利用野外露头、岩心、测井等资料对鄂尔多斯盆地中南部本溪组障壁岛的沉积特征进行了研究。研究结果表明,本溪组整体自西向东发育为泻湖亚相-障壁岛亚相-陆棚亚相沉积,障壁岛亚相储层分布面积不广,但部分井试气效果较好。试验区骨架砂体厚8～12m,总体呈北东—南西向展布。

This paper studies sedimentary characteristics of barrier islands of Benxi formation in the midsouthern of ordos basin. It integrates previous research and exploration data, based on the deposition of the basic principles and methods as a guide, construct a stratigraphy, basin analysis and other theories and methods. Also, through the outcrop, logs and other data analysis methods, comprehensive analysis, coupled with observations of core ideas and methods,this work provides a detailed analysis of the barrier island of sedimentary features.