A method of treating a subterranean formation includes providing a treatment fluid comprising a crosslinkable polymer prepared by a redox reaction with vinyl phosphonic acid monomers or polymers and a polysaccharide, and at least one of a hydrolysable in-situ acid generator and a chelating agent, providing a carrier fluid comprising a brine, providing a metal crosslinker, placing all into a formation, allowing the polymer of to crosslink, and allowing the crosslinked polymer to become uncrosslinked. A wellbore fluid includes a crosslinkable polymer prepared by a redox reaction with vinyl phosphonic acid monomers or polymers and hydroxyethyl cellulose; at least one of a hydrolysable in-situ acid generator, a chelating agent, and mixtures thereof; a carrier fluid comprising a brine; and a metal crosslinker.
一种处理地下地层的方法包括提供一种处理液,该处理液包括一种通过与
乙烯基膦酸单体或聚合物和
多糖的氧化还原反应制备的可交联聚合物,以及可
水解原位酸发生器和
螯合剂中的至少一种;提供一种由盐
水组成的载液;提供一种
金属
交联剂;将所有处理液放入地层中,使聚合物交联,并使交联聚合物解交联。一种井筒流体包括通过与
乙烯基膦酸单体或聚合物和
羟乙基纤维素发生氧化还原反应制备的可交联聚合物;可
水解原位酸发生器、
螯合剂及其混合物中的至少一种;由盐
水组成的载液;以及
金属
交联剂。