Abstract: Improved stripper formulations for use on metal cross linked floor finishes comprise a compound selected from the group consisting of a chelant containing an amine functionality and a metal chelating ligand, an alkali metal salt of the chelant, an aliphatic or aromatic polyamine, the aromatic polyamine having the amine functionality outside the aromatic ring, and mixtures of the chelant and polyamine. The stripper formulations are applied to metal cross linked floor finishes in a process for stripping such finishes.

Abstract: Improved stripper formulations for use on metal cross linked floor finishes comprise a compound selected from the group consisting of a chelant containing an amine functionality and a metal chelating ligand, an alkali metal salt of the chelant, an aliphatic or aromatic polyamine, the aromatic polyamine having the amine functionality outside the aromatic ring, and mixtures of the chelant and polyamine. The stripper formulations are applied to metal cross linked floor finishes in a process for stripping such finishes.

Abstract: A cleaner or degreaser composition with enhanced performance characteristics comprises a surfactant combination consisting of a) a water soluble ethoxylate selected from the group consisting of at least one linear primary or branched secondary alcohol of C9 to C15 chain length and 6 to 13 ethylene oxide groups/mole of alcohol; b) a water insoluble ethoxylate selected from the group consisting of at least one linear primary or branched secondary alcohol of C9 to C15 chain length and 2.5 to 5 ethylene oxide groups/mole of alcohol; and c) a component selected from the group consisting of amphoteric surfactants, couplers and mixtures thereof; the composition containing alkylphenol ethoxylate or glycol ether solvent.

Abstract: A cleaner or degreaser composition with enhanced performance characteristics comprises a surfactant combination consisting of a) a water soluble ethoxylate selected from the group consisting of at least one linear primary or branched secondary alcohol of C9 to C15 chain length and 6 to 13 ethylene oxide groups/mole of alcohol; b) a water insoluble ethoxylate selected from the group consisting of at least one linear primary or branched secondary alcohol of C9 to C15 chain length and 2.5 to 5 ethylene oxide groups/mole of alcohol; and c) a component selected from the group consisting of amphoteric surfactants, couplers and mixtures thereof; the composition containing alkylphenol ethoxylate or glycol ether solvent.

Abstract: Corrosion is inhibited in hydrochloric acid solutions used to acidize wells, by adding to the solutions a corrosion inhibiting composition comprising cinnamaldehyde or a substituted cinnamaldehyde together with a reaction product of a C.sub.3-6 ketone such as acetophenone, thiourea or a related compound, formaldehyde and hydrochloric acid.

Abstract: A clayish formation, such as encountered in rock surrounding an oil well bore, is stabilized with a quaternary ammonium salt of an imide of polymaleic anhydride. The invention is particularly relevant to hydraulic fracturing fluids used for enhanced oil recovery.

Abstract: The invention provides a surfactant mixture, comprising a zwitterionic surfactant, a nonionic surfactant and a cationic surfactant, which forms a foamable liquid composition upon addition to aqueous media including fresh water, brines, acids and water/alcohol mixtures. The foams prepared from the foamable liquid composition have utility as fracturing fluids and well cleaning fluids.

Abstract: A method for viscosifying a liquid hydrocarbon-based fracturing fluid is disclosed. The method comprises mixing together a liquid hydrocarbon, an acid, a phosphate composition and an aluminate activator. The phosphate composition comprises an organic phosphate ester selected from the group consisting of orthophosphate esters of the formulae ##STR1## wherein R is an alkyl group containing one to about eight carbon atoms and R' is selected fromt the group consisting of alkyl groups containing about six to about eighteen carbon atoms, alkenyl groups containing about six to about eighteen carbon atoms and mixtures thereof. Hydrocarbon-based fracturing fluids prepared by such method, and methods of use of such fluids are also disclosed.

Abstract: This invention relates to the use of silicone-induced hydrocarbon foams as well stimulants, for example as illustrated by their use in fracturing well formations, removal of paraffin in wells, removal of condensate hydrocarbons from blocked gas wells, etc.

Abstract: This invention relates to the use of silicone-induced hydrocarbon foams as well stimulants, for example as illustrated by their use in fracturing well formations, removal of paraffin in wells, removal of condensate hydrocarbons from blocked gas wells, etc.

Abstract: Improved fluid loss control is realized in an acidizing treatment of a subterranean formation of the type using foamed acid, particularly in a foamed fracture acidizing type treatment, by injecting a gelled, substantially unfoamed fluid as a pad ahead of the foamed acid. I.

Abstract: Improved fluid loss control is realized in an acidizing treatment of a subterranean formation, of the type wherein a gelled pad fluid is injected ahead of an acidizing fluid, by dissolving an effective amount of an inorganic water soluble metal halide or sulfate salt in the pad fluid and injecting said salt containing pad fluid ahead of the acid.

Abstract: A liquid, foamable acid composition is described which comprises a liquid foaming agent (i.e., a surfactant) and an alkanol or an inertly-substituted alkanol dissolved in an aqueous acid. The foamed compositions find utility, for example, in cleaning ferrous surfaces.

Abstract: A subterranean formation is acidized with an emulsion comprising an aqueous acidizing solution, an oil, an effective amount each of an alkyl C.sub.8 to C.sub.18 primary fatty amine and at least one diethanolamide of at least one C.sub.8 to C.sub.18 fatty acid.