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1. 发明授权

US4438976A Method of repair of short circuits for in situ leaching 失效
标题翻译：原位浸出短路修复方法
公开(公告)号：US4438976A
公开(公告)日：1984-03-27
申请号：US406022
申请日：1982-08-06
申请人： David R. Baughman , Jerry R. Bergeson
发明人： David R. Baughman , Jerry R. Bergeson
IPC分类号： C09K8/50 , E21B33/138 , E21B43/26 , E21B43/28
CPC分类号： E21B43/283 , C09K8/50 , E21B33/138 , E21B43/261
摘要： In an acidic in situ leaching system, a short circuit passage through a subterranean formation between a fracture associated with an injection well and a fracture associated with a production well can be plugged by introducing a non-acidic liquid for displacing acidic leach liquid from the short circuit passage, introducing into the injection well a basic composition including a sealing material that gels under acidic conditions, and introducing sufficient liquid into the injection well to displace at least a portion of the basic composition containing sealing material from the injection well into the short circuit passage. Liquid flow between the injection well and the production well is then discontinued for a sufficient time for residual acid in the subterranean formation surrounding the short circuit passage to contact the sealing material and cause gelation of the sealing material in the short circuit passage. The introduction of acidic leach liquid to the formation can then continue. The sealing material may be a polymer or a water soluble silicate.
摘要翻译：在酸性原位浸出系统中，可以通过引入非酸性液体来从短路中排出酸性浸出液，从而堵塞与注入井相关的裂缝之间的地下地层和与生产井相关的裂缝之间的短路通道在注入井中引入包括在酸性条件下凝胶化的密封材料的基本组合物，并将足够的液体引入注入井，以将至少一部分含有密封材料的基础组合物从注入井移入短路通道。然后在注入井和生产井之间的液体流动停止足够的时间，使围绕短路通道的地层中的残余酸接触密封材料并引起密封材料在短路通道中的凝胶化。然后可以继续将酸性浸出液引入地层。密封材料可以是聚合物或水溶性硅酸盐。

2. 发明授权

US4386806A Well repair for in situ leaching 失效
标题翻译：良好的原位浸出修复
公开(公告)号：US4386806A
公开(公告)日：1983-06-07
申请号：US236843
申请日：1981-02-23
申请人： Steven G. Axen , Ray V. Huff , Jerry R. Bergeson
发明人： Steven G. Axen , Ray V. Huff , Jerry R. Bergeson
IPC分类号： C09K8/50 , E21B43/28
CPC分类号： E21B43/28 , C09K8/50
摘要： A permeable region adjacent a well bore used in an acidic in situ leaching system can be repaired by introducing a non-acidic liquid for displacing acidic leach liquid from the permeable region, introducing into the well bore a basic composition including a polymeric material that gels under acidic conditions, and applying sufficient pressure to the well bore to displace at least a portion of the basic composition and polymeric material from the well bore into the permeable region adjacent the well bore. Liquid flow in the well bore is then discontinued for a sufficient time for acid remaining in the subterranean formation adjacent the well bore to contact such polymeric material and cause gelation of the polymeric material in the permeable region. The introduction of acidic leach liquid can then continue.
摘要翻译：在酸性原位浸出系统中使用的井眼附近的可渗透区域可以通过引入用于从可渗透区域排出酸性浸出液的非酸性液体来修复，将包含聚合物材料的基本组合物引入孔中，并且向井眼施加足够的压力以将基本组合物和聚合物材料的至少一部分从井眼移入与井眼相邻的可渗透区域中。然后，在井眼中的液体流动停止足够的时间，以使残留在邻近井眼的地下地层中的酸接触这种聚合物材料并引起聚合材料在可渗透区域中的凝胶化。然后可以继续引入酸性浸出液。

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