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公开(公告)号：US10253249B2
公开(公告)日：2019-04-09
申请号：US14449961
申请日：2014-08-01
发明人： Li Jiang , Bruno Lecerf , Connor Coley , Philip Sullivan , Brent Busby , Jeremy Bedard
摘要： Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure.
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公开(公告)号：US20160032176A1
公开(公告)日：2016-02-04
申请号：US14449961
申请日：2014-08-01
发明人： Li Jiang , Bruno Lecerf , Connor Coley , Philip Sullivan , Brent Busby , Jeremy Bedard
摘要： Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure.
摘要翻译： 用于处理生产地层为碳酸盐的地下井的方法包括制备处理流体，其包括：（a）多价阳离子反应聚合物的水溶液; （b）包含脂肪酸和乙醇胺的溶液; （c）钙盐不溶的一种或多种化合物的酸性水溶液; 或（d）包含尿素或其烷烃衍生物或二者的水溶液和聚乙烯吡咯烷酮（PVP）。 将处理流体放置在井中，使得溶液在低于压裂压力的压力下接触碳酸盐岩层。 使处理流体与碳酸盐岩形成反应，从而在成形表面或地层表面的一部分上沉积膜。 然后将酸溶液放置在井中，使得酸在低于压裂压力的压力下接触碳酸盐岩层。
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公开(公告)号：US20190225876A1
公开(公告)日：2019-07-25
申请号：US16373126
申请日：2019-04-02
发明人： Li Jiang , Bruno Lecerf , Connor Coley , Philip Sullivan , Brent Busby , Jeremy Bedard
摘要： Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure.
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公开(公告)号：US20160032700A1
公开(公告)日：2016-02-04
申请号：US14449899
申请日：2014-08-01
发明人： Li Jiang , Bruno Lecerf , Connor Coley , Philip Sullivan , Brent Busby , Jeremy Bedard
摘要： Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure higher than or equal to the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or parts of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure higher than or equal to the fracturing pressure.
摘要翻译： 用于处理生产地层为碳酸盐的地下井的方法包括制备处理流体，其包括：（a）多价阳离子反应聚合物的水溶液; （b）包含脂肪酸和乙醇胺的溶液; （c）钙盐不溶的一种或多种化合物的酸性水溶液; 或（d）包含尿素或其烷烃衍生物或二者的水溶液和聚乙烯吡咯烷酮（PVP）。 将处理流体放置在井中，使得溶液以高于或等于压裂压力的压力接触碳酸盐岩层。 使处理流体与碳酸盐岩层反应，从而将膜沉积到地层表面或地层表面上。 然后将酸溶液放置在井中，使得酸在高于或等于压裂压力的压力下接触碳酸盐岩层。
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