应用灰色关联法分析延长气田子长东区山2层产能影响因素

Application of Gray Correlation Method to Analyze Capacity Factor of the Zichang Eastern Mountain2 Gas Sub-Layer in Yanchang Gas Field

延长气田子长东区域山2储层较为发育,砂体大面积分布,连片性较好,但储层具有"三低一强"(低孔、低渗、低压,非均质性强)特点,且含有高矿化度地层水,地下地质条件复杂多变,多个因素共同影响储层产能。应用灰色关联度分析法,能快速确定子长东区域影响山2气层产能的主控因素,为下步压裂试气选段及压裂工艺改造工作提出指导性意见。

Reservoirs at Zichang Eastern Mountain2 gas sub-layer in Yanchang gas field is developed well,whose sand body distributes to a large area,and contiguous is better,while,the reservoirs of that have the features of'three low and one big'( low porosity and low permeability,low pressure,big heterogeneity),and contain high salinity formation water,whose underground geological conditions are complex,a number of factors affecting the reservoir capacity. Appling gray correlation analysis methods,the main controlling factors to influence the capacity of Shan 2 gas reservoir at the Zichang Eastern Mountain have been determined.,which proposes a guidance for the next step of formation selection for fracturing and gas test and fracturing transformation technology.