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首页> 外文期刊>Petroleum Science and Technology >Profile Control Technology by Inorganic Salt Out Under High-Temperature Conditions for Preventing Fire Flooding Gas Channeling
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Profile Control Technology by Inorganic Salt Out Under High-Temperature Conditions for Preventing Fire Flooding Gas Channeling

机译:高温下无机盐析出的调剖技术防止火驱气窜

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摘要

In the process of heavy oil fire flooding, gas channeling occurs easily, due to the geological factors, to guarantee good thermal communication. As a result of the heat not being fully utilized, the heavy oil fireflood exploitation is far from the desired effect. According to the gas channeling phenomenon, the plugging method of inorganic plugging agent by salting out was carried out. Inorganic salt plugging agents suitable for higher than 400 degrees C of fire flooding profile modification were found out by screening in the existing chemical products. By laboratory salting experiment of the selected plugging agents NaCl and Na2SiO3, the result indicated that plugging ratio of plugging agent NaCl could achieve 60%, while the Na2SiO3 could achieve 80%. Glycol was used as a component of inducer in displacement fluid, because of its high ignition point, high flash point, and adequate supply.
机译:在重油火灾泛滥的过程中,由于地质因素,很容易发生气体窜流,以确保良好的热连通。由于热量没有得到充分利用,重油大火的开采远没有达到预期的效果。根据气体窜流现象,采用盐析法封堵无机封堵剂。通过在现有化学产品中进行筛选,发现了适用于高于400摄氏度的火灾驱替性能的无机盐堵漏剂。通过对选定的堵漏剂NaCl和Na2SiO3的实验室盐化实验,结果表明堵漏剂NaCl的堵漏率可以达到60%,而Na2SiO3的堵漏率可以达到80%。乙二醇由于其高着火点,高闪点和充足的供给而被用作驱替液中的诱导剂成分。

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