关于页岩基质岩块流动能力评价方法的探讨
Discussion on Evaluation Methodology of Flowing Ability of Shale Matrix
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- 引用格式:
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李武广,钟兵,官庆,杨学锋,周源.关于页岩基质岩块流动能力评价方法的探讨[J].天然气与石油,2015,33(3):0.doi:
Li Wuguang, Zhong Bing, Guan Qing, Yang Xuefeng, Zhou Yuan.Discussion on Evaluation Methodology of Flowing Ability of Shale Matrix[J].Natural Gas and Oil,2015,33(3):0.doi:
- DOI:
- 作者:
- 李武广 钟兵 官庆 杨学锋 周源
Li Wuguang, Zhong Bing, Guan Qing, Yang Xuefeng, Zhou Yuan
- 作者单位:
- 中国石油西南油气田公司勘探开发研究院
Exploration and Development Institute of Southwest Oil & Gas field Company, PetroChina
- 关键词:
- 页岩气；流动能力；数学模型；渗透率；扩散系数
Shale gas;Flowing ability; Mathematical model; Permeability; Diffusion coefficient
- 摘要:
- 页岩基质岩块流动能力是页岩气井产能预测、产量递减分析、可采储量计算、开发方案制定等的重要依据。依据数学物理方程、物理化学和物理模拟实验，分析了现有页岩基质岩块流动数学模型存在的不足，在此基础上，建立了改进的页岩基质岩块流动数学模型，即考虑吸附效应的扩散数学模型，确定了将扩散系数作为新的页岩基质岩块流动能力评价参数。研究认为该模型不仅可以较准确地评价页岩基质岩块流动能力，还能用于页岩气勘探开发的其它领域，为页岩气高效勘探开发提供理论指导。
Flowing ability of shale matrix is an important basis for shale gas well deliverability prediction, production decline analysis, EUR calculation, development plan formulation, etc. Analyzed are disadvantages of existing mathematic models for shale matrix flow based on mathematical physical equation, physical chemistrγ and physical simulation experiment. Established is an improved mathematical model for shale matrix flow, that is, a diffusional mathematical model considering the adsorption effect and determined is that the fusion coefficient shall be used as new parameters for evaluating shale matrix flow ability. Research suggests that this model cannot only evaluate the shale matrix flow ability, but also can he used in other fields of shale gas exploration and development, which can provide valuable theoretical guidance for high efficient shale gas exploration and development.
