Cement compositions comprising lignite-based graft

专利名称：Cement compositions comprising lignite-based grafted copolymers and methods ofuse

发明人：Matthew G. Kellum,Lance E. Brothers申请号：US13436556申请日：20120330公开号：US097866B2公开日：20150407

摘要：A method of cementing in a subterranean formation may comprise: introducinga cement composition comprising cement, water, and a lignite-based copolymer into asubterranean formation, wherein the lignite-based copolymer comprises a lignitebackbone, a first grafted monomer selected from the group consisting of -acrylamido-2-methylpropanesulfonic acid, a salt of 2-acrylamido-2-methylpropanesulfonic acid, and asecond grafted monomer comprising N,N-dimethylacrylamide; and allowing the cementcomposition to set in the subterranean formation, wherein cement composition has atransition time of less than or equal to about 150 minutes.

申请人：Matthew G. Kellum,Lance E. Brothers

地址：Spring TX US,Chickasha OK US

国籍：US,US

代理机构：Tumey L.L.P.

代理人：Craig W. Roddy

更多信息请下载全文后查看