首页>
外国专利>
DELAYED SWELLABLE PARTICLES FOR PREVENTION OF FLUID MIGRATION THROUGH DAMAGED CEMENT SHEATHS
DELAYED SWELLABLE PARTICLES FOR PREVENTION OF FLUID MIGRATION THROUGH DAMAGED CEMENT SHEATHS
展开▼
机译:防止膨胀水泥颗粒渗入的可溶胀颗粒
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method includes providing a cementing composition that includes an aqueous fluid a cementitious particulate and a copolymer particulate which includes a monofunctional monomer a water degradable first crosslinker and a second crosslinker. The method further includes placing the cementing composition in a subterranean formation so as to form a set cement sheath and swelling the copolymer particulate in response to a void created in the set cement sheath. The copolymer particulate allows the cementing composition to set to form the cement sheath before substantial swelling of the copolymer particulate occurs.
展开▼