塔里木盆地克拉苏构造带超深层储层裂缝发育模式及开发意义
王俊鹏 , 曾联波 , 周露 , 王珂 , 曾庆鲁 , 张知源 , 张荣虎 , 马学文
地球科学 ›› 2023, Vol. 48 ›› Issue (07) : 2520 -2534.
塔里木盆地克拉苏构造带超深层储层裂缝发育模式及开发意义
Development Model of Natural Fractures in Ultra-Deep Sandstone Reservoirs with Low Porosity in Kelasu Tectonic Belt, Tarim Basin
,
塔里木盆地克拉苏大气区是我国“西气东输”的重要战略气源地,构造裂缝对油气井高产稳产具有控制作用,但分布规律认识仍不明确.通过露头区激光雷达扫描、岩心及井下电成像,结合铸体薄片、激光共聚焦、CT扫描、碳氧同位素分析、阴极发光等实验方法,开展了裂缝成因机制分析及开发策略总结.认识到克拉苏大气区整体发育4类典型构造变形样式、3种构造裂缝类型、3类微裂缝与基质孔喉配置关系.该区构造裂缝具有“疏密相间、成簇分布”的特征,裂缝带宽度为2~6.5 km;自北向南,采取垂直裂缝优势走向钻进大斜度井并采取差异化改造措施,可提高有效缝网的钻遇率及规避底水上侵.
超深层 / 低孔砂岩 / 裂缝模式 / 储层 / 塔里木盆地 / 石油地质学
ultra-deep / tight sandstone / fracture model / reservoir / Tarim Basin / petroleum geology
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中国石油前瞻性基础性课题(2021DJ0302)
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