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US 8,876,437 B2Granted
Use of elastomers to produce gels for treating a wellbore
AssigneeM-I L.L.C.
InventorDavid Antony Ballard
Life of this patent
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Abstract
A method of treating an earth formation that includes introducing at least one blocked isocyanate in a liquid phase into the earthen formation; introducing at least one active hydrogen compound into the earthen formation; and contacting the blocked isocyante and the active hydrogen compound form an elastomeric gel is disclosed.
Claims11
A method of treating an earth formation comprising:
- introducing at least one blocked isocyanate, prepared by subjecting an isocyanate to a reversible blocking reaction with an acidic hydrogen-containing compound, in a liquid phase into the earthen formation;
- introducing at least one amine into the earthen formation;
- unblocking the isocyanate, wherein the isocyanate unblocks at a temperature in the range of 65° C. to 100° C.;
- and
- contacting the isocyanate and the amine to form an elastomeric gel.
2 more elements
A method of treating an earth formation, comprising:
- introducing at least one blocked isocyanate, prepared by subjecting an isocyanate to a reversible blocking reaction with an acidic hydrogen-containing compound, in a liquid phase into the earth formation;
- introducing at least one amine into the earth formation;
- introducing at least one trimerization catalyst into the earth formation;
- unblocking the isocyanate, wherein the isocyanate unblocks at a temperature in the range of 65° C. to 100° C.;
- contacting the isocyanate, the amine, and the trimerization catalyst to form an elastomeric gel.
2 more elements
Dependencies are inferred from the claim text.