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1. 发明授权

US4544206A Slug-type in situ recovery of mineral values 失效
标题翻译：矿物矿物的矿物原位回收
公开(公告)号：US4544206A
公开(公告)日：1985-10-01
申请号：US449362
申请日：1982-12-13
申请人： Donald R. Wier , Gordon D. Gillham
发明人： Donald R. Wier , Gordon D. Gillham
IPC分类号： E21B43/28
CPC分类号： E21B43/28
摘要： Mineral values, particularly uranium, are recovered in situ from a heterogeneous subsurface earth formation containing the mineral values, which formation comprises zones of both high and low permeability, including injecting a plurality of separate slugs of leach solution adapted to solvate the mineral values into at least one injection well in communication with all zones of the formation, injecting a slug of a gas which is essentially insoluble in the leach solution between each two successive volumes of leach solution and withdrawing the pregnant leach solution, containing mineral values, from at least one production well in communication with all zones of the formation. The method can be further improved by injecting a mobility modifier, adapted to decrease the mobility of the leach solution, at the trailing end and/or leading end of the leach solution which is in contact with a slug of the gas. In a preferred embodiment, the mineral values contain significant amounts of uranium.
摘要翻译：矿物特别是铀矿从包含矿物含量的非均质地下地层中原位回收，该地层包含高渗透率和低渗透率的区域，包括注入多个独立的浸出溶液絮块，将矿物质溶解成为至少一个与地层的所有区域连通的注入井，在每两个连续体积的浸出溶液之间注入基本上不溶于浸出溶液的气体块，并从含有矿物质值的至少一个生产与各地形成沟通。该方法可以通过在与气体的块状物接触的浸出溶液的尾端和/或前端处注入适于降低浸出溶液的迁移率的迁移率调节剂进一步改进。在优选的实施方案中，矿物含量含有大量的铀。

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