公开(公告)号：US20120202720A1

公开(公告)日：2012-08-09

申请号：US13326561

申请日：2011-12-15

申请人： Cornelia Adriana de Wolf ,  Hisham Nasr-El-Din ,  James N. LePage ,  Mohamed Ahmed Nasr-El-Din Mahmoud ,  Johanna Hendrika Bemelaar

发明人： Cornelia Adriana de Wolf ,  Hisham Nasr-El-Din ,  James N. LePage ,  Mohamed Ahmed Nasr-El-Din Mahmoud ,  Johanna Hendrika Bemelaar

IPC分类号： C09K8/62

CPC分类号： C09K8/74

摘要： The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.

摘要翻译： 本发明包括通过使地层与包含谷氨酸N，N-二乙酸（GLDA）和/或其盐，甲基甘氨酸-N，N-二乙酸（MGDA）和/或其盐的溶液接触来形成碳酸盐储层中的虫洞的方法， 或其盐，或其组合。 本发明还包括通过使碳酸盐储存器的损坏区域与包含GLDA和/或其盐，甲基甘氨酸-N，N-二乙酸（MGDA）和/或 盐，或其组合。 本发明还包括含有盐，还包含GLDA和/或其盐，甲基甘氨酸-N，N-二乙酸（MGDA）和/或其盐或其组合的溶液。

公开(公告)号：US20080108525A1

公开(公告)日：2008-05-08

申请号：US12006109

申请日：2007-12-28

申请人： Ali Al-Taq ,  Hisham Nasr-El-Din ,  Tawtiq Al-Shafai

发明人： Ali Al-Taq ,  Hisham Nasr-El-Din ,  Tawtiq Al-Shafai

IPC分类号： C09K8/72

CPC分类号： C09K8/74 ,  C04B41/009 ,  C04B41/5016 ,  C04B41/85 ,  C04B28/02 ,  C04B2103/61

摘要： A method and composition for protecting cement surfaces in a well bore treatment zone from the destructive effects of acid mud and other acidization processes commonly used to stimulate hydrocarbon production from the formation, includes contacting the cement with an aqueous acid mixture of HAc and HF in a mutual solvent for a sufficient period of time to form a protective deposit or precipitate layer that is resistant to the acidization composition. In a preferred embodiment, the aqueous acid mixture includes corrosion inhibitors and inhibitor aids, and a preflush with an ammonium chloride solution in a mutual solvent is used to prepare the cement surfaces in the treatment zone.

摘要翻译： 用于保护井眼处理区中的水泥表面的方法和组合物不受酸性泥浆和通常用​​于刺激从地层产生碳氢化合物的其它酸化方法的破坏作用的包括使水泥与HAc和HF的含水酸混合物接触的方法和组合物 相互溶解足够的时间以形成耐酸化组合物的保护性沉积物层或沉淀层。 在优选的实施方案中，含水酸混合物包括腐蚀抑制剂和抑制剂助剂，并且使用在相互溶剂中的氯化铵溶液的预冲洗来制备处理区中的水泥表面。

公开(公告)号：US20060196666A1

公开(公告)日：2006-09-07

申请号：US11070105

申请日：2005-03-01

申请人： Ali Al-Taq ,  Hisham Nasr-El-Din ,  Tawfiq Al-Shafai

发明人： Ali Al-Taq ,  Hisham Nasr-El-Din ,  Tawfiq Al-Shafai

IPC分类号： E21B37/08 ,  E21B43/27

CPC分类号： C09K8/74 ,  C04B41/009 ,  C04B41/5016 ,  C04B41/85 ,  C04B28/02 ,  C04B2103/61

摘要： A method and composition for protecting cement surfaces in a well bore treatment zone from the destructive effects of acid mud and other acidization processes commonly used to stimulate hydrocarbon production from the formation, includes contacting the cement with an aqueous acid mixture of HAc and HF in a mutual solvent for a sufficient period of time to form a protective deposit or precipitate layer that is resistant to the acidization composition. In a preferred embodiment, the aqueous acid mixture includes corrosion inhibitors and inhibitor aids, and a preflush with an ammonium chloride solution in a mutual solvent is used to prepare the cement surfaces in the treatment zone.