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Screening and Coreflood Testing of Gel Foams To Control Excessive Gas Production in Oil Wells

机译:凝胶泡沫的筛选和岩心测试以控制油井中过量的天然气生产

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摘要

Polymer-enhanced foam and gel-foam formulations were screened and tested for their injectability and gas-blocking ability in Berea sandstone cores and carbonate packs (in the presence and absence of oil at 85 deg. C). Gel foams, with suitable gelation delay, wee propagated through packed cores in a similar manner as polymer-enhanced foams (PEF's). However, the gas-blocking ability of cured gel foam was far superior to that of PEF. The gel foam blocked gas flow completely, even in the presence of oil, and a significant pressure differential had to be exceeded before the gas could channel through the gel foam and flow through the core.
机译:筛选了聚合物增强型泡沫和凝胶泡沫制剂,并测试了它们在Berea砂岩岩心和碳酸盐岩充填物中(在有和没有油的情况下,在85摄氏度下)的可注射性和阻气能力。具有适当胶凝延迟的凝胶泡沫,以与聚合物增强泡沫(PEF's)相似的方式,通过堆积的核芯扩散。但是,固化的凝胶泡沫的阻气能力远远优于PEF。即使在有油的情况下,凝胶泡沫也完全阻止了气体的流动,在气体可以穿过凝胶泡沫并流过芯子之前,必须超过明显的压差。

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