REVERSE CIRCULATION CEMENTING PROCESS

A method of cementing a casing in a wellbore with a tool having a plurality of holes (21) therethrough connected at a lower end of the casing. A plurality of stoppers (30) are pumped in a leading edge of a cement slurry (13) down an annulus (14) between the casing and the wellbore to the tool where...

Full description

Saved in:
Bibliographic Details
Main Authors GRIFFITH, JAMES E, LEGIS, EDGAR J, MARRIOTT, TIMOTHY W, DENNIS, JOHN L. JR, HUMPHREY, RANDY D
Format Patent
LanguageEnglish
French
German
Published 18.06.2008
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online AccessGet full text

Cover

More Information
Summary:A method of cementing a casing in a wellbore with a tool having a plurality of holes (21) therethrough connected at a lower end of the casing. A plurality of stoppers (30) are pumped in a leading edge of a cement slurry (13) down an annulus (14) between the casing and the wellbore to the tool where the stoppers engage the holes to hold the cement slurry in the annulus until the cement slurry hardens. A valve may be incorporated with the stopper catch tool (20). Stoppers and holes may have various shapes and centrifugal pump (60) may be used.
Bibliography:Application Number: EP20040732641