基于地质标签-参数图谱体系的钻速优化与预测
Rate of Penetration Optimization and Prediction Based on a Geological Label⁃Parameter Spectrum Framework
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针对钻井过程中钻速预测与优化面临的参数耦合复杂、地层描述粗糙、模型可解释性差等挑战,旨在实现地质驱动的钻进参数智能优化. 提出一种融合地质特征量化与多参数可视化分析的“地质标签-参数图谱”体系. 基于南海某区块实际数据,引入因子分析将该区域的深度、压力、地震波速、岩性等多源地质参数降维为3个公共因子,据此构建12类具有明确物理意义的地质标签. 基于地质标签与目标钻速区间的钻进参数图谱,直观展示不同地质条件下十余项工程参数的合理取值范围与最佳值. 基于图谱,可在实钻中通过比对参数曲线与图谱偏离,制定定量的参数优化策略;在设计阶段通过计算参数与多套图谱的匹配概率,实现钻速区间定量预测.
In response to the challenges of complex parameter coupling, rough formation description, and poor model interpretability in predicting and optimizing the rate of penetration (ROP) during drilling, this study aims to achieve geology⁃driven intelligent optimization of drilling parameters. A "Geological Label⁃Parameter Atlas" system integrating geological feature quantification and multi⁃parameter visualization analysis is proposed. Based on actual data from a block in the South China Sea, factor analysis is introduced to reduce multiple geological parameters, such as depth, pressure, seismic wave velocity, and lithology, into three common factors. Accordingly, 12 types of geological labels with clear physical meanings are constructed. The drilling parameter atlas, developed based on these geological labels and target ROP intervals, visually displays the reasonable value ranges and optimal values for over ten engineering parameters under different geological conditions. Based on this atlas, quantitative parameter optimization strategies can be formulated during actual drilling by comparing the deviation between current parameter curves and the atlas, while in the design stage, quantitative prediction of ROP intervals can be achieved by calculating the matching probability between design parameters and multiple sets of atlas.
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广东省珠海市产学研合作项目《一种数字化工程勘察钻探装备的研发及其产业化》(2320004002792)
中海石油(中国)有限公司项目“南海西部油田上产2000万方钻完井关键技术研究”子课题“乐东10区超高温高压井综合提速技术研究”(CNOOC⁃KJ135ZDXM38ZJ05ZJ)
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