新型水力深穿透射孔系统产能影响因素

Study on productivity influence factors of a new type of water-jet deep penetrator system

席长丰 吴晓东 冯虎 赵建军 王疆梅

XI Chang-feng WU Xiao-dong FENG Hu ZHAO Jian-jun WANG Jiang-mei

中国石油大学, 北京 102249 大庆油田第九采油厂, 黑龙江 大庆 163853 胜利油田滨南采油厂, 山东 滨州 256600

水力深穿透射孔具有深穿透、大孔径、清洁无污染等特点,对其产能进行准确评价,可以更好地指导水力深穿透射孔作业。通过半解析公式,与常规直井进行对比,分析了影响水力深穿透射孔井产能的因素;对射孔参数本身(孔长和孔径)和油藏物性参数(表皮因子、油层厚度、垂向渗透率)分别进行了分析研究。结果表明,实施水力深穿透射孔作业能够有效增加油井产能;油藏物性相同的条件下,孔长越长、孔径越大,产能越高;在射孔孔长和孔径一定的条件下,表皮因子越大、油层厚度越小、垂向渗透率越大,水力深穿透射孔技术的增产效果越好。

A cleaner, larger and deeper perforation hole could be achieved by water-jet deep penetrator system. An accurate evaluation of well productivity could optimize the water-jet penetrating parameters. The productivity influence factors of water-jet penetrating well were analyzed, which included perforating parameters (hole length and hole size) and reservoir physical properties (skin factor, formation thickness, vertical permeability). The study shows that well productivity could be improved by water-jet deep penetrating. Under the same reservoir physical properties, the productivity is proportional to hole length and hole size. While the hole length and hole size are same, the greater the skin factor is, the thinner the formation thickness is and the greater the vertical permeability is, the better the production increase is for water-jet deep penetrator system.

10.3969/j.issn.1000-7393.2006.05.021