Vicinal diol containing monomers and methods of preparing
AssigneeHalliburton Company
InventorsMarlin Holtmyer, David Hanlon, Mike Conway, Charles Hunt
Life of this patent
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Abstract
The present invention provides a water soluble vinyl monomer containing a vicinal diol group of the general formula: ##STR1## wherein R.sub.1 is hydrogen or methyl; R.sub.3 and R.sub.4 are independently methyl or ethyl; Y is oxygen or NH; X.sup.- is a halogen, sulfate, CH.sub.3 SO.sub.4.sup.- or C.sub.2 H.sub.3 SO.sub.4.sup.- or CH.sub.3 COO.sup.- and n is 2 or 3. Polymers containing the monomer when crosslinked in aqueous fluids form high viscosity gels which are stable at high temperatures and can be used in carrying out completion, stimulation, enhanced production and other treatments in subterranean formations.
Claims4
A water soluble vinyl monomer containing a vicinal diol group of the formula:
- ##STR13## R.sub.1 is hydrogen or methyl;
- R.sub.3 and R.sub.4 are independently methyl or ethyl;
- Y is oxygen or NH;
- X.sup.- is a halogen, sulfate, CH.sub.3 SO.sub.4.sup.-, C.sub.2 H.sub.3 SO.sub.4.sup.- or CH.sub.3 COO.sup.- ;
- and
- n is 2 or 3.
Dependencies are inferred from the claim text.