石油物探2026，Vol.65Issue(2)：282-293,12.DOI:10.12431/issn.1000-1441.2025.0169
基于数据和模型双约束的页岩储层三维岩石物理模板构建方法
3D rock physics template construction method for shale reservoirs based on data and model constraints
摘要
Abstract
The quantitative prediction of petrophysical properties is crucial to resources assessment and development planning for shale reservoirs.The rock physics template(RPT)serves as a key tool to link these properties to elastic responses and is therefore widely applied to the quantitative inversion of critical reservoir properties.However,the complex mineral composition and pore structures of shale oil reservoirs compromise the accuracy of traditional model-driven RPTs in the inversion.Consequently,their predictive capacity often falls short of exploration and development demands.To address this issue,we propose a 3D RPT generation approach that incorporates both data and model constraints for the quantitative prediction of sensitive petrophysical parameters.We first tailor a rock physics model to achieve the accurate prediction of shear velocity and equivalent pore aspect ratio for the target area.This model is subsequently used for the perturbation and sensitivity analyses,which ultimately identify three key petrophysical parameters most sensitive to elastic responses:calcite content,porosity,and pore aspect ratio.Under the constraint of the rock physics model,we establish an RPT to reflect the macroscopic relationship between petrophysical and elastic parameters.The RPT is further enhanced by incorporating log data via the radial basis function(RBF)interpolation method,resulting in a high-precision 3D RPT with dual constraints from both the model and the data.A case study in the Jiyang Depression demonstrates that the proposed dual-constrained 3D RPT delivers highly accurate and applicable predictions of shale oil reservoir properties.This approach establishes a novel strategy of RPT construction and application for complex shale reservoirs.关键词
页岩油储层/岩石物理模板/径向基函数插值/敏感物性参数预测Key words
shale oil reservoir/rock physics template/radial basis function interpolation/sensitive petrophysical parameter prediction分类
能源科技引用本文复制引用
吴广能,桂志先,高刚,林雨峰,关业坤,曹潇宇..基于数据和模型双约束的页岩储层三维岩石物理模板构建方法[J].石油物探,2026,65(2):282-293,12.基金项目
国家自然科学基金项目(42030805)资助. This research is financially supported by the National Natural Science Foundation of China(Grant No.42030805). （42030805）
