Appeal No. 2003-0604
Application No. 09/307,544
APPENDIX
1. A well plug additive comprising a dry mixture of a water
soluble crosslinking polymer, a crosslinking agent, and a
reinforcing material selected from among fibers and comminuted
plant materials.
2. The additive of claim 1 wherein the polymer is an a
carboxylate-containing polymer and the crosslinking agent is a
chromic carboxylate complex.
3. The additive of claim 2 wherein the reinforcing material
comprises hydrophilic and hydrophobic fibers.
4. The additive of claim 3 wherein the hydrophobic fibers
comprise at least one selected from the group of hydrophobic
fibers consisting essentially of nylon, rayon, and hydrocarbon
fibers, and wherein the hydrophilic fibers comprise at least one
selected from the group of hydrophilic fibers consisting
essentially of glass, cellulose, carbon, silicon, graphite,
calcined petroleum coke, and cotton fibers.
5. The additive of claim 2 wherein the reinforcing material
comprises comminuted plant material.
6. The additive of claim 5 wherein the reinforcing material
comprises at least one comminuted material selected from the
group of comminuted plant materials consisting essentially of
nut and seed shells or hulls of almond, brazil, cocoa bean,
coconut, cotton, flax, grass, linseed, maize, millet, oat,
leachy, peanut, rice, rye, soybean, sunflower, walnut, and
wheat; rice tips; rice straw, rice bran; crude pectate pulp;
peat moss fibers; flax; cotton; cotton linters; wool; sugar
cane; paper; bagasse; bamboo; corn stalks; sawdust; wood; bark;’
straw; cork; dehydrated vegetable matter; whole ground corn
cobs; corn cob light density pith core; corn sob ground woody
ring portion; corn cob chaff portion; cotton seed stems; flax
stems; wheat stems; sunflower seed stems; soybean stems; maize
stems; rye grass stems; millet stems; and mixtures thereof.
7. The additive of claim 2 wherein the polymer is a partially
hydrolyzed polyacrylamide.
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