基于地震正演与井震结合的低序级断层描述技术及应用

发布时间：2018-05-09 06:57

本文选题：低序级断层 + 地震正演　；参考：《现代地质》2017年02期

【摘要】：复杂断块油藏的开发实践表明,低序级断层控油作用明显,对低序级断层的精细刻画是研究不同类型断块油藏开发技术的基础和关键。随着开发程度的提高,断块油藏面临越来越复杂的地质条件,如断层、地层剥蚀、超覆等多种地质现象并存,地层接触关系及断裂系统复杂,给现有地震资料条件下低序级断层识别及组合带来极大的困难。针对这一难题,通过探索,形成了基于地震正演分析与井震结合的低序级断层识别与精细刻画技术:综合利用井震结合重建地层对比模式指导井上小断点的准确识别、井断点地震反射特征与地震正演结合建立断层地震识别标志、井引导地震属性分析断层平面组合规律、井震多层位精细解释刻画断棱断面及多层叠合验证空间组合关系。在"断层、剥蚀、超覆"共存的孤东二六区沙河街组,通过该方法的应用,重组了其复杂断裂系统,解决了长期以来的油水矛盾,取得了较好的应用效果。
[Abstract]:The development practice of complex fault-block reservoir shows that the low-sequence fault plays an obvious role in oil control, and the fine characterization of low-sequence fault is the basis and key to study the development technology of different types of fault-block reservoirs. With the improvement of development degree, fault-block reservoirs are faced with more and more complicated geological conditions, such as faults, strata erosion, overlying and so on. It is very difficult to identify and combine low sequence faults under the condition of existing seismic data. In view of this problem, through exploration, a low-order fault recognition and fine description technology based on seismic forward analysis and well shock is formed. The combination of well-shock and reconstruction of formation correlation model is used to guide the accurate identification of small fault points in wells. The seismic reflection characteristics of well fracture point and seismic forward modeling are combined to establish fault seismic identification mark, well guided seismic attribute analysis fault plane combination rule, well earthquake multi-layer fine interpretation to depict fault section and multi-layer superposition to verify spatial combination relationship. In Shahejie formation of Gudong 26 district, where "fault, denudation and overburden" coexist, the complex fault system has been reorganized through the application of this method, which has solved the contradiction between oil and water for a long time and achieved good application effect.
【作者单位】：中国地质大学(北京)地球科学与资源学院;中石化胜利油田分公司勘探开发研究院;
【基金】：国家科技重大专项“复杂断块油田提高采收率技术”(2016ZX05011-002);国家科技重大专项“全球剩余油气资源研究及油气资产快速评价技术”(2011ZX05028)
【分类号】：P618.13;P631

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