岩性油气藏 ›› 2019, Vol. 31 ›› Issue (6): 102108.doi: 10.12108/yxyqc.20190611
吴伟1, 邵广辉1, 桂鹏飞2, 张虔1, 魏浩元3, 李国利1, 任盼亮3
WU Wei1, SHAO Guanghui1, GUI Pengfei2, ZHANG Qian1, WEI Haoyuan3, LI Guoli1, REN Panliang3
摘要: 酒泉盆地鸭儿峡油田柳北地区K1g0段为扇三角洲前缘亚相的砂砾岩裂缝性油藏,有效裂缝是主要的储集空间和渗流通道,也是产能的主控因素。为了研究K1g0段裂缝的有效性和储集层的品质分类方法,综合利用电成像和试油试采资料,分析了裂缝宽度、密度和倾角这3项关键参数对裂缝有效性的影响;通过关键参数和裂缝发育厚度构建了裂缝发育度和裂缝开启度用以定量表征裂缝的有效性,并建立了这2项表征参数和米采油量指数的定量评价图版。结果表明:裂缝发育度和裂缝开启度指数能较好地评价研究区裂缝的有效性;裂缝有效性指数和储层产油量的评价图版可实现定量、快速的裂缝性砂砾岩储层品质分类。这为研究区裂缝性储层的老井复查和新井产量预测提供了参考依据。
中图分类号:
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