Compositions and methods for well treatment

A self-healing cement for use in wells in which carbon dioxide is injected, stored or extracted, comprises a carbonaceous material. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the materia! swells when contacted by carbon dioxide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.


Year:
2011
Other identifiers:
EPO Family ID: 42937360
Laboratories:




 Record created 2015-09-16, last modified 2018-03-17


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