Title：Research on foam oil production rule and control method in tight oil horizontal wells
作者：赵志强
关键词：致密油,水平井,泡沫油,递减率,流压
论文类型：期刊论文
论文来源：石油石化节能 2019
摘要：针对某区块致密油水平井存在的"、"、"下降、液位下降、动力图气影响及正常抽油条件等问题，论证了生产数据与其他生产数据之间的矛盾。通过洗井、调整冲距、取样试压，证实井筒中存在泡沫油。为了保证致密油的高效开发，研究分析了致密油水平井泡沫油的生产规律和局限性。发现泡沫油出现在月递减率为负值时。结合关井试验，得出了产量随流量压力降低而降低的生产规律。
Abstract：In view of the problems of " in the tight oil horizontal wells of A block, the decrease of " and ", the drop of liquid level, the influence of power diagram gas and the normal pumping condition, and so on, the contradiction between production data and other production data is proved. Through well washing, adjusting and punching distance, sampling and pressure testing, it is proved that there is foam oil in the wellbore. In order to ensure the efficient development of tight oil, the foam oil production rules and limits of tight oil horizontal wells were studied and analyzed. It was found that foam oil appeared when the monthly decline rate was negative. Combined with the shut in test, the production law that the output decreases with the decrease of flow pressure is obtained.
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