Abstract: This invention relates to a composition comprising: a mixture of a brine and a liquid oil, and (A) an emulsifying amount of (i) at least one reaction product of a hydrocarbyl-substituted succinic acylating agent, and at least one of (a) ammonia, (b) an alcohol, (c) an amine, (d) or mixtures thereof, or at least one salt of the reaction product; or (ii) at least one reaction product of a hydroxyaromatic compound, an aldehyde, and an amine. The compositions of the present invention have beneficial emulsification properties. These compositions are useful in drilling, working over and completing well-bore holes. The well-drilling compositions of the present invention have beneficial viscosity, pumping and suspension properties.

Abstract: The present invention relates to a method, comprising the steps of:introducing into a well borehole a composition, comprising water, an acid, and (A) at least one reaction product of (A-1) at least one hydrocarbyl-substituted carboxylic acylating agent selected from the group consisting of a dicarboxylic acylating agent, a succinic acylating agent, a Dieis-Alder diacid, a dimer acid acylating agent, a tricarboxylic acylating agent, a polycarboxylic acylating agent, or mixtures thereof, and (A-2) at least one amine-terminated polyoxyalkylene or (A-3) at least one hydroxy-terminated polyoxyalkylene having a number average molecular weight from about 600 to about 30,000, or a mixture of said (A-2) amine-terminated polyoxyalkylenes and (A-3) hydroxy-terminated polyoxyalkylenes. The reaction product (A) may be used alone, or in combination with one or more surfactants.

Abstract: This invention relates to a composition comprising a water-in-oil emulsion formed from a brine, a liquid oil, (A) an emulsifier, (B) a friction modifier of the following formula: ##STR1## where X=1 to 4, z=1 to 6,Q=0 to 2R.sub.1 and R.sub.2 are independently H or an aliphatic group containing from 1 to about 16 carbon atoms, provided that the sum of R.sub.1 and R.sub.2 is between 0 and about 16,R' is an aliphatic group containing an average of from about 8 to about 24 carbon atoms, andR" is selected from the group consisting of H, an aliphatic group containing between 1 and an average of about 18 carbons, and ##STR2## where Q, X, z, R.sub.1, R.sub.2, R' and R" are defined as set forth above, and Y is 0 to 5. In a preferred embodiment, z is 1. In the most preferred embodiment, Q=0, R.sub.1 and R.sub.2 are both H, X, and z all equal 1, R' is n-dodecyl, and R" is H. The compositions of the present invention have beneficial lubrication properties.

Abstract: A drilling fluid composition comprising a mixture of a brine (A) an emulsifier, and (B) an oil soluble friction modifier of the following formula: ##STR1## where X=1 to 4,z=1 to 6,Q=0 to 2R.sub.1 and R.sub.2 are independently H or an aliphatic group containing from 1 to about 16 carbon atoms, provided that the sum of R.sub.1 and R.sub.2 is between 0 and about 16,R' is an aliphatic group containing an average of from about 8 to about 24 carbon atoms, andR" is selected from the group consisting of H, an aliphatic group containing between 1 and an average of about 18 carbons, and ##STR2## where Q, X, z, R.sub.1, R.sub.2, R' and R" are defined as set forth above, and Y is 0 to 5 is disclosed. The compositions of the present invention have beneficial lubrication properties. These compositions are useful in drilling, working and completing well bore holes.

Abstract: The invention provides a composition comprising:(A) at least one dicarboxylic acid or anhydride or at least one ammonium or metal salt of the dicarboxylic acid or anhydride; and(B) at least one compound represented by the formula ##STR1## wherein R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each independently hydrogen, alkyl, hydroxyalkyl, polyhydroxyalkyl, polyalkoxyalkyl or hydroxypolyalkoxyalkyl; and R.sub.1 is a hydrocarbyl group. In another embodiment, the compositions include (C) at least one acid, or ammonium or metal salt of the acid represented by the formula: ##STR2## wherein R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each independently hydrogen or hydrocarbyl groups; and n is a number from 1 to about 10;(D) at least one ester-salt derived from at least alkyl or alkenyl succinic acid or anhydride of about 8 to about 28 carbon atoms and at least one alkanol amine;or mixtures of (C) and (D).The invention further provides for concentrates and functional fluids containing the above corrosion-inhibitors.

Abstract: It has been discovered that 3,4,6-trifluorophthalic anhydride may be decarboxylated by heating in a polar aprotic solvent to yield 2,4,5-trifluorobenzoic acid.