WO/2004/101952 is referenced by 92 patents.

A self-healing cement system includes cement, water and at least one additive that swells in contact with water from reservoir or from formation in the case of a structural failure in the set cement to provide a physical barrier in the zone of failure. Examples of such material include particles of super-absorbent polymer. These additives have the effect of making the cement self­healing in the event of physical failure or damage such as micro-annuli. The self healing property is produced by the contact of the water itself, the potential repair mechanism is thus activated if and when needed in case of start of loss of zonal isolation. Several super-absorbent polymers have been identified such as polyacrylamide, modified crosslinked poly(meth)acrylate and non-solute acrylic polymers.

Title
Self adaptive cement systems
Application Number
PCT/EP2004/005479
Publication Number
2004/101952
Application Date
May 12, 2004
Publication Date
November 25, 2004
Inventor
Nelson Erik
Keith Dismuke
Martin Beurel Muriel
Roy Delage Sylvaine
Le
Agent
MENES Chatherine
Assignee
Nelson Erik
Keith Dismuke
Martin Beurel Muriel
Roy Delage Sylvaine
Le
Sofitech
Schlumberger Canada
Schlumberger Holding
Schlumberger Technology
Services Petroliers Schlumberger
IPC
C09K 08/467
C04B 40/06
C04B 28/02
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