摘要:
An effective laboratory method for developing complete capillary pressure curves involves directly measuring an oil/water saturation profile within a cylindrical porous rock core plug. The saturation profile, which includes a free water level, is established under a known pressure gradient induced by centrifuging and is measured using image mapping techniques. The free-water level is established at a desired position within the length of the core plug and provides a reference position of zero capillary pressure to facilitate measurement of both positive and negative capillary pressures.
摘要:
An effective laboratory method for developing complete capillary pressure curves involves directly measuring an oil/water saturation profile within a cylindrical porous rock core plug. The saturation profile, which includes a free water level, is established under a known pressure gradient induced by centrifuging and is measured using image mapping techniques. The free-water level is established at a desired position within the length of the core plug and provides a reference position of zero capillary pressure to facilitate measurement of both positive and negative capillary pressures.
摘要:
Liquid hydrocarbon-containing organic compositions have considerably improved anti-oxidation properties when a hydrocarbylpolythiobenzoic acid is present in the composition.
摘要:
Lubricating compositions incorporating therein at least one mercapto-substituted boron-containing compound selected from 2-hydroxy-4-(mercaptohydrocarbyl)-1,3,2-dioxaborolanes and alkylammonium bis[(mercaptohydrocarbyl)ethylenedioxy]borates. Novel 2-hydroxy-4-(mercaptohydrocarbyl)-1,3,2-dioxaborolanes and novel alkylammonium bis[(mercaptohydrocarbyl)ethylenedioxy]borates and methods for preparing these compositions of matter are provided. Alkylammonium bis[(mercaptohydrocarbyl)ethylenedioxy]borates are prepared from an intermediate chemical compound that is a novel hydrogen bis[(mercaptohydrocarbyl)ethylenedioxy]borate for which a method of preparation is also provided.
摘要:
A water soluble lubricating additive for water-based fluids used in metalworking operations comprising a polyoxyalkylene sulfur compound selected from the group consisting of alkyl polyoxyalkylene sulfides, alkyl polyoxyalkylene sulfoxides and mixtures thereof. In an alternate embodiment of this invention, dithiodiglycol may be combined with a polyoxyalkylene sulfur compound selected from the group consisting of alkyl polyoxyalkylene sulfides, alkyl polyoxyalkylene sulfoxides and mixtures thereof to produce said water soluble lubricating additive.
摘要:
Novel metal-working process and aqueous metal-working fluids are provided. The aqueous metal-working fluids contain at least one N,N'-dilactam disulfide as an extreme pressure (EP) additive.
摘要:
Improved anti-wear additives for lubricants are provided which additives comprise the reaction product obtained by the reaction of 1,5,9-decatriene and hydrogen sulfide. Lubricating oil compositions containing said additives are also provided.
摘要:
A method is provided for determining the relative wettability of a sample of a porous media with respect to a first liquid and a second liquid. The method includes the steps of providing the sample at a partially saturated state with respect to the first liquid; obtaining a first nuclear magnetic resonance (NMR) parameter value for the partially saturated sample; exposing the partially saturated sample to the second liquid for a predetermined period of time, wherein the second liquid is treated with a paramagnetic species such that the presence of the second liquid in the sample does not substantially affect the NMR signal response of the sample; obtaining a second NMR parameter value for the sample after exposure to the second liquid; and determining the relative wettability by comparing the first and second NMR parameter values.
摘要:
Novel metal-working process and aqueous metal-working fluids are provided. The aqueous metal-working fluids contain at least one sodium hydrocarbylthiocarboxylate as an extreme pressure (EP) additive.
摘要:
Metal working lubricating compositions useful as a precoating oil and as a coating and rolling operation, comprising mineral or synthetic oil and a sulfur containing carboxylic acid such as n-dodecylthioacetic acid and n-butylthioacetic acid. The composition can also contain vegetable oil or animal fat. The lubricant composition provided is particularly useful in the cold rolling of steel and other metals.