초록 ▼

Gelled compositions suitable as fracture fluids and water diversion agents comprising water, a polymeric viscosifier, an aldehyde component, and at least one phenolic component such as resorcinol, catechol, and the like, as well as selected oxidized phenolic materials such as 1,4-benzoquinone of nat

Gelled compositions suitable as fracture fluids and water diversion agents comprising water, a polymeric viscosifier, an aldehyde component, and at least one phenolic component such as resorcinol, catechol, and the like, as well as selected oxidized phenolic materials such as 1,4-benzoquinone of natural or synthetic origin and natural and modified tannins. The gelled compositions can additionally contain gel stabilizers and chemical buffering agents.

대표청구항 ▼

Gelled compositions suitable as fracture fluids and water diversion agents consisting essentially of: (a) water, (b) a water-thickening amount of a water-dispersible polymer selected from the group consisting of cellulose ethers, polyacrylamides, and biopolysaccharides or heteropolysaccharides produ

Gelled compositions suitable as fracture fluids and water diversion agents consisting essentially of: (a) water, (b) a water-thickening amount of a water-dispersible polymer selected from the group consisting of cellulose ethers, polyacrylamides, and biopolysaccharides or heteropolysaccharides produced by the action of bacteria of the genus Xanthomonas upon carbohydrates, (c) a small, but effective amount in the range of 0.02 to 2 weight percent, of at least one aldehyde component selected from the group consisting of aliphatic monoaldehydes having from one to about 10 carbon atoms per molecule, glyoxal, glutaraldehyde, and terephthaldehyde, and (d) a small, but effective amount in the range of 0.005 to 2 weight percent of at least one phenolic compound selected from the group consisting of phenol, catechol, resorcinol, phloroglucinol, pyrogallol, 4,4′-diphenyl, 1,3-dihydroxynaphthalene, 1,4-benzoquinone, hydroquinone, quinhydrone, and quebracho which amounts of aldehyde (c) and phenolic compound (d) are sufficient to cause gelation of an aqueous dispersion of polymer (b) and form said gelled composition.