页岩气储层含气性影响因素及储层评价——以上扬子古生界页岩气储层为例

Gas-bearing influential factors and evaluation of shale gas reservoir:A case study of Paleozoic shale gas reservoir in Upper Yangtze region

页岩气藏属于自生自储型气藏,在进行储层评价时,应该重点考虑含气性。以我国上扬子古生界7口页岩气井岩心样品测试数据为基础,首先从总含气量入手,讨论储层含气性影响因素,包括有机碳含量、镜质体反射率、孔隙度、等温吸附气量、伊/蒙混层含量和可动流体百分数,研究发现可以用总含气量0.5 m3/t作为区分储层与非储层的界限,各项指标均和总含气量呈不同程度的相关关系。进而运用灰色关联理论,进行储层评价,同时参考前人成果和经验数据,提出了储层评价方案和储层空间图像特征。

Abstract on during Platform, ： Shale gas reservoirs are self-generated and self-contained, and gas- reservoir evaluation. Based on test data of core samples from 7 wells beginning TOC, Ro, porosity, was discovered that bearing property should be focused of Paleozoic in the Upper Yangtze with gas content, the influential factors for gas-bearing property were discussed, including isothermal adsorption data, illite/smectite formation taking 0.5 m3/t as the boundary between reservoir each parameter appears its relationship to total gas content. was performed. Referring to previous results and empirical characteristics were accomplished. content and movable fluid percentage. It and non-reservoir was practicable, and Based on grey relational theory, reservoir evaluation data, reservoir evaluation scheme and space image