鄂尔多斯盆地页岩油水平井体积压裂改造策略思考
张矿生,唐梅荣,杜现飞,陶亮

Considerations on the strategy of volume fracturing for shale oil horizontal wells in Ordos Basin
Kuangsheng ZHANG,Meirong TANG,Xianfei DU,Liang TAO
表1 鄂尔多斯盆地页岩油与国内外页岩油特征参数对比
Table 1 Characteristic parameter comparison of the shale oil in Ordos Basin and that in other areas home and abroad
特征参数鄂尔多斯盆地 延长组国内盆地国外盆地
准噶尔盆地芦草沟组三塘湖盆地条湖组松辽盆地白垩系北美二叠盆地
沉积环境湖相湖相湖相湖相浅海相
埋深/m1 600~2 2002 700~3 9002 000~2 8001 700~2 2002 134~2 895
油层厚度/m5~1510~135~2010~30400~600
孔隙度/%6~128~14.68~185~188~12
渗透率/(10-3 μm20.11~0.140.01~0.0120.1~0.50.02~0.50.01~1.0
含油饱和度/%67.7~72.478~8055~76.548~5575~88
气油比/(m3/t)75~12218~22//50~140
原油黏度/(mPa·s)1.21~1.9611.7~21.558~834.0~8.00.15~0.53
压力系数0.77~0.841.2~1.60.91.1~1.321.05~1.5
水平应力差/MPa4~65~91~53~61~3
脆性指数/%35~4550~5131~54/45~60