却勒1油藏储层地质特征及伤害因素试验研究

Natural Gas Exploration and Development(2006)

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Abstract
却勒1油藏是分流河道沉积并由构造控制的层状边水油藏,储层特征决定了其在开发过程中存在一定的潜在伤害因素。通过对实际岩心分析测试和敏感性伤害评价实验,并结合储层地质特征分析研究,明确了却勒1油藏储层的碎屑颗粒成分、填隙物、结构、物性和非均质性特征;敏感性伤害评价实验研究结果表明:液相侵入导致水锁、自吸水膨胀是第一位潜在伤害因素;液相侵入形成的水敏、盐敏、酸敏、碱敏是第二位潜在的伤害因素;由压力突增而形成的速敏、压敏是第三位的潜在伤害因素。
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Key words
formation evaluation,experiment,core analysis,reservoir characteristics,oil reservoir
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