公开(公告)号：EP3344593A1

公开(公告)日：2018-07-11

申请号：EP16843044.5

申请日：2016-09-02

申请人： Imerys Oilfield Minerals, Inc.

发明人： BOEHRINGER, Roberto ,  FLOWERS, JR., James, R. ,  STEPHENSON, Cristopher

IPC分类号： C04B14/38 ,  C09K8/46

CPC分类号： C04B28/021 ,  C04B14/18 ,  C04B28/02 ,  C04B2103/12 ,  C04B2103/46 ,  C04B2111/00327 ,  C04B2111/00724 ,  C09K8/467 ,  C04B14/14 ,  C04B14/16

摘要： A method for well cementing may include supplying a settable composition including a cement composition and water into a well bore, and allowing the settable composition to set to form hardened concrete. The cement composition may include a hydraulic cement and natural glass, and the hardened concrete may have a strength activity index of at least 125%. A method for making well cement may include combining hydraulic cement and natural glass to form a cement composition, and adding water to form a settable composition. The method may further include allowing the settable composition to set to form hardened concrete, wherein the hardened concrete may have a strength activity index of at least 125%. A cement composition for use in well cementing may include hydraulic cement and natural glass having a median particle size (d50) of less than 12 microns and a top particle size (dm) of less than 30 microns.