基于地震分频双元融合的辫状河砂体边界预测—以鄂尔多斯盆地北部新召东地区盒三段为例
冯子豪 , 刘震 , 张威 , 李晋 , 刘柯明 , 孙笑凡
现代地质 ›› 2026, Vol. 40 ›› Issue (3) : 780 -789.
基于地震分频双元融合的辫状河砂体边界预测—以鄂尔多斯盆地北部新召东地区盒三段为例
Prediction of Braided River Sand Body Boundary Based on Seismic Frequency Division Dual Fusion: A Case Study from the Third Member of Lower Shihezi Formation in the Xinzhaodong area, Northern Ordos Basin
鄂尔多斯盆地杭锦旗地区新召东区带盒三段发育强非均质性辫状河储层,传统地震方法难以有效识别其复杂河道边界。本文基于地质、测井和地震资料的综合分析,在传统的RGB融合技术基础上,提出了一种双元分频融合方法,利用两种最能反映砂体分布特征的有效频段进行融合,实现砂体边界与厚度的精细预测。通过优选瞬时振幅作为敏感属性,并结合频谱分析,确定低频与峰值频率为特征频率,将这两类频率属性融合,以突出主干河道响应并压制薄层干扰。研究表明:(1)该方法显著提升了河道边界的识别精度,从视觉角度更易于划分骨架砂体边界;(2)砂体厚度预测的准确性得到提高,与实钻数据的相关性达到0.9以上,为下一步储层的精细开发奠定了基础;(3)预测新召东盒三段西部与中部发育北西向骨架砂体,东部发育北东向骨架砂体,通过沉积相、测井相与地震相综合分析,建立了研究区主要沉积微相的识别图版,识别出心滩为下一阶段勘探开发的主要目标。综合结果表明,双元融合技术为辫状河储层的精细刻画提供了有效手段,对相似地质条件下的油气勘探开发具有推广应用价值。
The third member of lower Shihezi Formation in the Xinzhao East area, Hangjinqi region, Ordos Basin, contains highly heterogeneous braided river reservoirs, where conventional seismic methods struggle to effectively identify complex channel boundaries. Based on integrated analysis of geological, well-log, and seismic data, this study proposes a dual-frequency decomposition and fusion method built upon traditional RGB blending. By merging two optimal frequency bands that best reflect sand body distribution characteristics, the method enables detailed prediction of sand body boundaries and thickness. Instantaneous amplitude is selected as the sensitive attribute, and through spectral analysis, the low frequency and peak frequency are identified as characteristic frequencies. Fusion of these two frequency attributes highlights main channel responses and suppresses thin-layer interference. Results show that: (1) This method significantly improves the accuracy of channel boundary identification, making it easier to visually delineate framework sand body boundaries; (2) Sand body thickness prediction accuracy is enhanced, with a correlation exceeding 0.9 with drilling data, laying a foundation for subsequent detailed reservoir development; (3) In the western and central parts of the Xinzhao East He-3 member, NW-trending framework sand bodies are predicted, while NE-trending ones occur in the east. Through integrated analysis of sedimentary facies, well-log facies, and seismic facies, an identification template for major sedimentary microfacies in the study area is established, identifying channel bars as the primary target for future exploration and development. The integrated results demonstrate that the dual-frequency fusion method provides an effective approach for detailed characterization of braided river reservoirs and holds application value for oil and gas exploration in analogous geological settings.
| [1] |
孙宜朴, 杨伟利, 王传刚, |
| [2] |
王欢, 马立元, 罗清清, |
| [3] |
丁蓉, 庞雄奇, 贾承造, |
| [4] |
马明, 刘池洋, 王建强, |
| [5] |
朱宗良, 李文厚, 李克永, |
| [6] |
何发岐,雷涛,齐荣, |
| [7] |
刘祥柏,陶士振,杨秀春, |
| [8] |
齐荣, 李良, 秦雪霏. 鄂尔多斯盆地北缘近源砂砾质辫状河砂体构型与含气性[J]. 石油实验地质, 2019, 41(5): 682 - 690. |
| [9] |
李胜利, 张亚雄, 于兴河, |
| [10] |
何鑫,陈世加,胡琮, |
| [11] |
肖文华, 陈晓冬, 马国福, |
| [12] |
李勇霖, 倪智勇, 李晓光, |
| [13] |
张显文, 胡光义, 范廷恩, |
| [14] |
李斌. 应用地震分频属性进行储层描述研究[D]. 北京:中国石油大学(北京), 2019. |
| [15] |
岳大力, 李伟, 王军, |
| [16] |
童姜楠,王峰,张枫, |
| [17] |
常海亮,杜春彦,张宏伟, |
| [18] |
|
| [19] |
|
| [20] |
侯东梅, 郭敬民, 全洪慧, |
| [21] |
丁峰, 年永吉, 王治国, |
| [22] |
|
| [23] |
王永昌,刘彩云,熊杰, |
| [24] |
朱筱敏, 董艳蕾, 曾洪流, |
| [25] |
万晓龙, 吴胜和, 周新平, 徐振华, 付金华, 王梓沣, 麻书玮, 邬德刚, 李桢, 刘明成. 夹层型页岩油三维甜点分布预测方法研究:以鄂尔多斯盆地庆城油田B15区块延长组为例[J]. 地学前缘, 2025, 32(5): 417 - 431. |
| [26] |
马佳国, 王建立, 周卿, |
| [27] |
李振春, 刁瑞, 韩文功, |
| [28] |
陈学华, 贺振华, 黄德济. 广义S变换及其时频滤波[J]. 信号处理, 2008, 20(01): 28 - 31. |
| [29] |
刘静静, 刘震, 齐宇, |
| [30] |
齐宇, 梁建设, 柳迎红, |
| [31] |
邓宏文, 王洪亮, 李小孟. 高分辨率层序地层对比在河流相中的应用[J]. 石油与天然气地质, 1997,18(2): 10 - 15 + 34. |
| [32] |
乔玉雷.基于Morlet小波分频的保边滤波去噪方法[J].石油物探,2011,50(02):139 - 143+154+10. |
| [33] |
刘艳祥, 吕文雅, 曾联波, 李睿琦, 董少群, 王兆生, 李彦录, 王磊飞, 冀春秋. 鄂尔多斯盆地庆城油田长7页岩油储层多尺度裂缝三维地质建模[J]. 地学前缘, 2024, 31(5): 103 - 116. |
| [34] |
|
| [35] |
|
/
| 〈 |
|
〉 |