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科技导报  2014 

华北S区碳酸盐岩气藏型储气库储渗特征

DOI: 10.3981/j.issn.1000-7857.2014.25.008, PP. 51-54

Keywords: 碳酸盐岩,气藏,储气库,孔喉结构

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Abstract:

华北S区气藏为裂缝性碳酸盐岩超深底水凝析气藏,储层发育特征及建库渗流机理极为复杂,导致建库库容参数评价难度较大。通过对比分析毛细管压力曲线与核磁共振T2谱分布的相关性,研究了碳酸盐储集空间孔喉发育特征;基于非稳态法多轮次气水相对渗率测试曲线,分析了碳酸盐微裂缝储层气水两相渗流特征。研究结果表明,华北S区碳酸盐储层微裂缝发育、孔喉细小且分布集中,不同层位气相渗流特征差异较大,影响了碳酸盐气藏型储气库运行效率,是建库方案制定及注采运行优化首先应考虑的因素。

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