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US 2019/0316025 A1Published application
Method of Improving Wellbore Integrity and Loss Control
AssigneeTerves, LLC
InventorsAndrew Sherman, Mrigadhara V Raghu V Meesala
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AssigneeTerves, LLC
InventorsAndrew Sherman, Mrigadhara V Raghu V Meesala
Estimating the term…
The present invention pertains to a method for enhancing wellbore integrity and/or for sealing a wellbore by sealing formation or micro-annulus fractures in a wellbore. Such sealing can be at least partially accomplished by the use of timed expansion of an expandable sealant material that is placed a wellbore. The expansion of the expandable sealant material causes the cement surface or formation surface to be compressed, thereby creating a tight seal and/or eliminating annulus cracking, fracture, and/or gas channels in the wellbore. A degradable polymer can be used when restoration of the wellbore formation is desired.
1) An expandable sealant material for use in improving integrity of a wellbore, said expandable sealant material comprising a reactive expandable filler and elastic-plastic binder.
19) An expandable cement comprising 60-95 wt. % cement and 5-40 wt. % expandable sealant material.
20) A wellbore that includes a casing and an expandable sealant material, said expandable sealant material is a) coated on at least a portion of an outer surface of said casing and/or b) intermixed with concrete that is positioned between said casing and in outer surface of said wellbore.
21) A method for improving integrity of a wellbore comprising:
Dependencies are inferred from the claim text.