公开(公告)号：WO2014033233A1

公开(公告)日：2014-03-06

申请号：PCT/EP2013/067941

申请日：2013-08-29

Applicant: POWELTEC

Inventor： ZAITOUN, Alain ,  DUPUIS, Guillaume ,  AL MAAMARI, Rashid ,  AL HASHMI, Abdulaziz ,  AL SHARJI, Hamed

IPC: C09K8/508 ,  C09K8/514 ,  C09K8/68 ,  C09K8/88 ,  C09K8/90

CPC classification number: E02D3/12 ,  C09K8/5083 ,  C09K8/514 ,  C09K8/56 ,  C09K8/5758 ,  C09K8/588 ,  C09K8/68 ,  C09K8/882 ,  C09K8/90 ,  C09K17/42 ,  E02B3/16 ,  E02D3/00 ,  E02D31/04 ,  E21B43/025

Abstract: The invention relates to a process for the treatment of a rock formation or cavity, comprising the step of injecting, into said rock formation or cavity, a water solution of a water-soluble thermo-thickening polymer, said thermo- thickening polymer being able to form a gel at a threshold temperature (T g ), an inner temperature (T int ) of the rock formation or cavity being equal or superior to said threshold temperature (T g ), said process being characterized in that the thermo-thickening polymer is a cellulose chain, partially etherified with C 1 -C 6 alkyl or hydroxyalkyl groups, or a polyacrylamide-based copolymer including N-isopropylacrylamide and/or N-vinylpyrrolidone groups. Such a process is advantageous for water shutoff in gas- or oilfields, or to solve to water channelling problems between injection wells and production wells.

Abstract translation: 本发明涉及一种用于处理岩层或空腔的方法，包括将所述岩石结构或空腔注入水溶性热增稠聚​​合物的水溶液的步骤，所述热增稠聚合物能够 在阈值温度（Tg），岩层或空腔的内部温度（Tint）等于或优于所述阈值温度（Tg）形成凝胶，所述方法的特征在于，所述热增稠聚合物是纤维素链 ，部分被C1-C6烷基或羟烷基醚化，或包括N-异丙基丙烯酰胺和/或N-乙烯基吡咯烷酮基团的聚丙烯酰胺类共聚物。 这种方法有利于在油气田或油田中进行水切断，或解决注入井和生产井之间的水道问题。