岩性油气藏 ›› 2020, Vol. 32 ›› Issue (3): 166172.doi: 10.12108/yxyqc.20200316
• 石油工程 • 上一篇
冯炜1,2,3, 杨晨1,3,4, 陶善浔1,3, 王财忠1,3, 陆彦颖5, 张路锋3, 周福建3
FENG Wei1,2,3, YANG Chen1,3,4, TAO Shanxun1,3, WANG Caizhong1,3, LU Yanying5, ZHANG Lufeng3, ZHOU Fujian3
摘要: 酸压是碳酸盐岩储层改造的常规手段,酸液对岩石的非均质刻蚀使得裂缝表面呈现独特的形态特征,目前针对酸蚀前后裂缝表面形态特征的研究还不够深入。因此,通过室内实验借助3D扫描技术获得真实酸蚀裂缝表面几何形态数据,引入新的表征参数hn和εh,定量描述了裂缝表面的起伏程度,对比了酸蚀前后裂缝表面形态的变化。结果表明:酸蚀反应掉水力裂缝的槽点;沿酸液流动方向形成明显的沟槽,凸起部分变缓,曲折比减小,总体起伏程度增大;垂直酸液流动方向上形成了连续的上下波动,曲折比和起伏程度均增大。
中图分类号:
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