湖相页岩薄互层脆性矿物含量与含气量的关系研究

Shale gas is a current hot research field, and the brittle mineral content and gas content of thin interbed of shale are the key scientific issues to the current study. According to the scientific problems of lacustrine thin interbed of shale, such as the undefined features of thin interbed of shale, identification difficult, the unknown of calculation methods and relationship patterns between the brittle mineral content and gas content, firstly, we will use the method of outcrops and core calibration logging to research the features of thin interbed of shale, and the frequency trend attribute of thin interbed will be analyzed, the effective method will be explored to identify thin interbed of shale, and then the technology of frequency trend attribute recognition will be formed. Then, based on the experimental results of core analysis, rock physical and adsorption-desorption, the fuzzy clustering recognition charts and calculation models of brittle mineral content and gas content will be established, and the quantitative calculation recognition method of brittle mineral content and gas content will be explored, and tnen the quantitative calculation method of well-logging fuzzy clustering will be developed. Thirdly, the relationship of brittle mineral content of thin interbed of shale and development of reservoir quality and gas content will be demonstrated, and the relational schema between brittle mineral content and gas content will be derived. Lastly, a perfect method and technique of quantitative calculation and characterization for brittle mineral content and gas content will be formed, and we will provide the longitudinal and transversal distribution regularity of thin interbed of shale with full of gas, and then the scientific basis and technical guarantee to the exploration and development of shale gas will be provided.

页岩气是当前热点研究领域，页岩薄互层脆性矿物含量与含气量更是当前研究的关键科学问题。针对湖相页岩薄互层特征不明确、识别困难、脆性矿物成分含量与含气量的计算方法及关系模式不清等科学问题，首先采用露头、岩心标定测井研究页岩薄互层的特性，分析薄互层的频率趋势属性，探索识别页岩薄互层的有效方法，形成薄互层频率趋势属性分析技术。然后根据岩心分析化验、岩石物理及吸附解析实验结果，建立页岩薄互层脆性矿物成分含量与含气量的模糊聚类识别图版及计算模型，探索脆性矿物成分含量与含气量的定量计算识别方法，形成测井模糊聚类定量计算方法。其次论证页岩薄互层脆性矿物成分含量与储层质量发育及含气量的关系，推导出脆性矿物成分含量与含气量的关系模式。最终形成一套完善的定量计算表征页岩薄互层脆性矿物成分含量与含气量的方法技术，提供饱含气页岩薄互层的纵、横向展布规律，为页岩气的勘探开发提供科学依据和技术保证。

页岩气是当前热点研究领域，页岩薄互层脆性矿物含量与含气量更是当前研究的关键科学问题。针对湖相页岩薄互层特征不明确、识别困难、脆性矿物成分含量与含气量的计算方法及关系模式不清等科学问题。开展了湖相页岩薄互层特征、脆性矿物成分含量、含气量的计算方法研究，进一步研究了脆性矿物成分含量与含气量的关系。取得重要成果包括：（1）研发出页岩薄互层叠置韵律旋回的有效方法—频率趋势属性分析方法；（2）建立了测井计算页岩薄互层脆性矿物成分含量、孔隙度、粘土矿物成分含量的优化方法—径向基函数网络模型法；（3）提出了基于TOC计算页岩储层含气饱和度的方法—有机、无机分离方法；（4）论证出页岩薄互层脆性矿物成分含量与储层质量发育及含气量的关系，推导出脆性矿物成分含量与含气量的关系模式。最终形成一套完善的定量计算表征页岩薄互层脆性矿物成分含量与含气量的方法技术；(5)发表SCI论文4篇，EI论文3篇，核心1篇。通过该项目研究完善了测井评价页岩储层的理论方法，推动了测井评价页岩储层的技术发展，解决了页岩储层测井评价的技术难题，为我国页岩气的勘探开发提供了理论支持与技术保障，对推进我国页岩气的飞速发展具有重要意义。