基于可钻性知识图谱的深部在钻地层可钻性智能推断
An Intelligent Inferring Method of Deep Formation Drillability Based on Drillability Knowledge Graph
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地层可钻性作为衡量钻进过程中地层被钻难易程度的关键指标,是合理选择钻进方法和优化钻进操作参数的重要依据. 针对深部地质钻进过程中可钻性信息获取成本高昂、许多岩石没有对应的地层可钻性范围标准等问题,提出一种基于可钻性知识图谱的深部在钻地层可钻性智能推断方法. 该方法首先构建包含岩石关键特征的可钻性知识图谱,设计基于岩石相似性度量的可钻性推理算法,将地矿行业标准中的67种地层可钻性级别推广至已知的292种岩石. 其次,通过钻孔地层岩性动态分析与可钻性智能推断,实时分析地层岩性分布,推断在钻地层可钻性级别. 最后,通过微钻实验和压入硬度实验验证所提方法的有效性. 该方法为深部地质钻进过程智能控制奠定了重要基础.
The formation drillability, as a key indicator for measuring the ease or difficulty of drilling the formation during the drilling process, serves as an important basis for rationally selecting drilling methods and optimizing drilling operational parameters. Addressing the issues of high cost in acquiring drillability information during deep geological drilling and the lack of corresponding formation drillability range standards for many rocks, this paper proposes an intelligent inference method for deep drilling formation drillability based on a drillability knowledge graph. Firstly, a drillability knowledge graph incorporating the key characteristics of rocks is constructed, and a drillability reasoning algorithm based on rock similarity measurement is designed. This approach extends the 67 rock drillability levels specified in the geomining industry standards to 292 known types of rocks. Secondly, through dynamic analysis of borehole formation lithology and intelligent inference of drillability, the distribution of formation lithology is analyzed in real⁃time, and the drillability level of the formation being drilled is inferred. Finally, the effectiveness of the proposed method is verified through micro⁃drilling experiments and indentation hardness tests. This method lays an important foundation for the intelligent control of the deep geological drilling process.
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地球深部探测与矿产资源勘查国家科技重大专项(2024ZD1000800)
地球深部探测与矿产资源勘查国家科技重大专项(2024ZD1000806)
国家自然科学基金重点项目(62333019)
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