分段多簇压裂水平井渗流特征及产能分布规律Seepage characteristics and productivity distribution of segmented multi-cluster fractured horizontal wells
任龙,苏玉亮,王文东,赵广渊,袁彬
摘要(Abstract):
为了直观反映分段多簇压裂水平井渗流特征,在优选了水平井合理压裂段数的基础上,利用流线模拟方法,研究了分段多簇压裂水平井流线场、压力场及饱和度场分布特征,分析了裂缝产能的分布规律.研究表明:整个渗流区域先后经历了裂缝附近线性流、裂缝附近拟径向流和油水井连通后的拟径向流3个渗流阶段;剩余油一部分分布在压裂裂缝段与段之间的低压区无法驱替,另一部分则分布在注水井与注水井之间的压力平衡区;端部外侧缝汇集着大多数流线,是水平井产油/液的主要来源;水平井端部裂缝见水早,含水上升快.
关键词(KeyWords): 水平井;分段多簇压裂;渗流特征;产能分布
基金项目(Foundation): 国家科技重大专项“胜利油田薄互层低渗透油田开发示范工程”(编号:2011ZX05051)
作者(Author): 任龙,苏玉亮,王文东,赵广渊,袁彬
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