2234386 is referenced by 67 patents.

A method of cementing a well permitting a reduction in the degree of diameter reduction of casing or liners required, and not requiring excessively large initial conductor casing, is described. The method is characterized by provision of an enlarged wellbore and a novel liner structure which is adapted for expansion of a reduced diameter section thereof downhole, providing, before expansion of the section, unimpeded flow of fluid from the enlarged wellbore during cementing and close fit of the expanded section with the casing or preceding liner, after cementing is completed and expansion of the section. A novel well liner structure and novel well liner expansion means are disclosed.

Title
Methode et dispositif utilises pour la cimentation dun puits
Method and apparatus for cementing a well
Publication Number
2234386
Application Date
April 8, 1998
Publication Date
March 18, 2003
Inventor
Darling Brian We
Vercaemer Claude J
Agent
SMART & BIGGAR
Assignee
Schlumberger Canada
Assignee
Schlumberger Canada
IPC
E21B 43/10
E21B 43/00
E21B 33/14
E21B 43/08
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