公开(公告)号：WO2019118427A1

公开(公告)日：2019-06-20

申请号：PCT/US2018/064903

申请日：2018-12-11

Applicant: BAKER HUGHES, A GE COMPANY, LLC

Inventor： DIGHE, Shailesh Shashank ,  BRYANT, Shannon E. ,  KELLUM, Matthew ,  DEAN, Gregory D. ,  BOTTIGLIERI, Antonio

IPC: C09K8/46 ,  C09K8/467 ,  C04B18/14 ,  C04B14/30 ,  C04B14/06 ,  C04B14/10 ,  C04B28/02 ,  C04B111/00

CPC classification number: C04B14/106 ,  C04B7/00 ,  C04B14/062 ,  C04B28/04 ,  C04B2103/0035 ,  C04B2201/20 ,  C09K8/46 ,  C09K8/473 ,  C09K8/48 ,  E21B33/14 ,  C04B14/30 ,  C04B18/146 ,  C04B24/38 ,  C04B2103/408 ,  C04B14/24 ,  C04B14/06

Abstract: A method of cementing a wellbore penetrating a subterranean formation comprises blending a base cement slurry with one or more liquid additives to provide a cementing composition, the base cement slurry comprising a liquid carrier, a class G cement or a blend of class G and class C cements as defined by the American Petroleum Institute (API) Specification 10A standards (R2015), and silica fume, or fumed silica, or a combination of silica fume and fumed silica, the base cement slurry having a density of about 14 to about 16 ppg; and injecting the cementing composition into the wellbore. The single base cement slurry can be used globally to make cementing compositions having wide ranges of density and temperature stability.

公开(公告)号：WO2019005556A1

公开(公告)日：2019-01-03

申请号：PCT/US2018/038495

申请日：2018-06-20

Applicant: BAKER HUGHES, A GE COMPANY, LLC

Inventor： DIGHE, Shailesh Shashank ,  GUPTA, D.V. Satyanarayana ,  BRANNON, Harold D. ,  KELLUM, Matthew

IPC: E21B33/13 ,  C04B28/02 ,  C04B22/12 ,  C04B103/10 ,  C04B111/00

Abstract: A method of cementing a wellbore comprises injecting into the wellbore a cement slurry comprising an encapsulated accelerant comprising an accelerant encapsulated within an encapsulation material; a cementitious material; and an aqueous carrier; and releasing the accelerant from the encapsulation material.