| 秦仁月,何伟,成炼,杨金昊,陈忠云.盆外残余向斜页岩地层多尺度断裂精细表征——以黔北安场向斜五峰组-龙马溪组为例[J].贵州地质,2025,42(4):479-495 |
| 盆外残余向斜页岩地层多尺度断裂精细表征——以黔北安场向斜五峰组-龙马溪组为例 |
| Fine Characterization of Multi-scale Faults of Residual Syncline Shale Reservoirs Outside the Basin——A Case Study of the Wufeng-Longmaxi Formation in the Anchang syncline of Northern Guizhou |
| 投稿时间：2025-07-25 |
| DOI： |
| 中文关键词: 黔北地区 残余向斜 五峰组-龙马溪组 断裂 |
| 英文关键词:Northern Guizhou Residual syncline Wufeng-Longmaxi formation Faults |
| 基金项目:贵州省科技重大专项《黔北常压页岩气增产挖潜重大技术研究》(编号:黔科合平台NSSYS〔2025〕重大002) |
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| 中文摘要: |
| 黔北地区安场向斜为复杂的盆外残余向斜，构造主要以高幅抬升及强烈挤压为特点。受加里东期、海西期、燕山-喜山期等多期构造运动叠加影响，研究区发育多期次、多级别、多性质断裂，部分断裂断距较小，地震识别难度大。为了更好地分析评价页岩气富集及保存条件，为钻井、压裂设计提供依据以及指导地质导向。在叠后地震资料基础上应用波动方程正演模拟技术及基于蚂蚁体方向优化处理的倾角属性技术对安场向斜内五峰组-龙马溪组页岩地层断裂进行预测，精细刻画了页岩气储层大、中、小三种尺度的断裂-裂缝类型和特征，形成了一套针对不同级别裂缝的叠后地震预测技术系列，并结合实际地质情况和钻探工程情况验证了断裂预测结果的准确性。 |
| 英文摘要: |
| The Anchang syncline in northern Guizhou is a complex residual syncline outside the basin，characterized by high amplitude uplift and strong compressionAffected by the superposition of multiple tectonic movements such as the Caledonian，Hercynian，and Yanshan Xishan periods，The research area has developed multiple stages，levels，and properties of faults，some of which have small fault throw，making seismic identification difficultFor better analizing the Enrichment and preservation conditions of shale gas，and providing a basis for designing drilling and hydraulic fracturing as well as guidine geosteering Prediction of fault characteristics of the Wufeng - Longmaxi Formation within Anchang syncline can be achieved by using the technology of wave equation forward simulation and dip attribute optimization based on ant body direction strengthen processing on the basis of post stack seismicThe types and characteristics of fractures and fractures on large，medium，and small scales in shale gas reservoirs have been precisely characterized，forming a series of post-stack seismic prediction techniques tailored to verious scales of fracturesThe accuracy of fracture prediction results has been verified in combination with actual geological conditions and drilling engineering situations |
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