Use of elastomers to produce gels for treating a wellbore

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United States of America Patent

PATENT NO 9702218
SERIAL NO

13515032

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Abstract

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A method of treating an earthen formation that includes introducing a first amount of a first blocked isocyanate in a liquid phase into the earthen formation; introducing a second amount of a second blocked isocyanate in a liquid phase into the earthen formation; the second blocked isocyanate group having a lower unblocking temperature than the first blocked isocyanate group; introducing at least one active hydrogen compound into the earthen formation; and contacting the first and second blocked isocyanates and the active hydrogen compound to form an elastomeric gel. The combination of two blocked isocyanates provides a synergistic effect so that the curing time can be optimised in a manner unexpected from the properties of the individual blocked isocyanates.

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Patent Owner(s)

Patent OwnerAddress
M-I DRILLING FLUIDS UK LTDWESTHILL INDUSTRIAL ESTATE WESTHILL ABERDEEN SCOTLAND AB32 6TQ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerrard, Donna Aberdeen, GB 2 6

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