Abstract: Through modular construction of the ozone generator from block modules (1) of metal which have through holes (2) as outer electrodes and can be directly cooled, the required mechanical tolerances can be maintained. In particular, if the high voltage electrode (8) and the dielectric (11) is cooled, high power densities can be achieved.

Abstract: A polymer is disclosed which is represented by the formula ##STR1## wherein: Y is hydrogen, ammonium, an alkali metal or an alkaline earth metal; R.sup.1 and R.sup.2 are independently hydrogen, hydroxyl, amino, nitro, sulfo, phospho, carboxy, carboxyamido groups or hydrocarbon groups of 1 to about 20 carbon atoms; R.sup.3 is hydrogen or a hydrocarbon group of from 1 to about 12 carbon atoms; R.sup.4 and R.sup.5 are independently hydrogen or alkyl groups of 1 to about 3 carbon atoms; m is a number sufficient to provide the acid or salt portion of said polymer at a level of from zero to about 90% by weight of the total weight of said polymer; n is a number sufficient to provide the amide portion of said polymer at a level of from about 10% to about 99.5% by weight of the total weight of said polymer; p is a number sufficient to provide the maleimide portion of said polymer at a level of at least about 0.

Abstract: A corrosion-inhibiting composition and method of inhibiting corrosion on metal surfaces are described. The composition comprises a reaction product of (a) a first constituent selected from an epoxide having an average of at least about one vicinal epoxide per molecule and a halogenated aliphatic compound having at least one displaceable halogen and (b) a second constituent comprising a dimercaptan. The reaction product in a hydrocarbon diluent is an effective corrosion inhibitor when applied to metal surfaces in highly corrosive environments, and is designed particularly for downhole metal surfaces of oil drilling equipment.

Abstract: An improved self-propelled vehicle used for transporting ammunition. Ammunition is moved by a motor driven conveyor having elevating means for selectively vertically moving ammunition units stored in the vehicle.

Abstract: An iron base sintered, wear-resistant material consisting substantially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3V and 0.5-2% Ni, 10-25% of Cu and the balance being essentially Fe.

Abstract: A composition designed for dissolution or dispersion in water to give an aqueous treatment fluid having a yield point of zero, at a temperature between about 85.degree. and about 160.degree. F., which is compatible with cement slurries and with drilling muds and a method of using same to displace a drilling mud from a borehole which penetrates a subterranean formation, particularly immediately preceding the injection of a fluid such as a cement slurry, and which also exhibits good fluid loss control and may be adapted for use with either water-based or oil-based drilling muds.

Abstract: The viscosity of thickened aqueous solutions of water-soluble polymers is reduced by the addition of alkali metal and alkaline earth metal salts of hypochlorous acid and tertiary amines. The combination of the salt and the tertiary amine is much more efficient in speed of reduction in viscosity and in the completeness of the degradation of the polymer than the use of the metal salt alone. The process of this invention is particularly useful in fracturing of oil wells.

Abstract: Solid wax-containing material deposited on pipeline walls, well tubing, etc., are removed by contacting the deposited wax with a mixture of a dispersant-type surfactant and light hydrocarbon at ambient temperatures.

Abstract: Copolymers of (1) from about 80% to about 98% by weight of acrylic acid and (2) from about 2% to about 20% by weight of itaconic acid and having a weight average molecular weight of between about 50,000 to about 1,000,000, preferably between about 100,000 to about 500,000, and which are at least water dispersible, are used as fluid loss control additives for aqueous drilling fluids and are particularly advantageous when used with muds containing soluble calcium and muds containing chloride ions such as seawater muds. An example is a copolymer of 95% by weight acrylic acid and 5% by weight itaconic acid in its sodium salt form.

Abstract: A method of treating oil contaminated cuttings comprising the steps of: contacting the oil contaminated cuttings with a detergent solution comprising a solvent and a surfactant selected from the group consisting of alcohol ethoxylates, phenol ethoxylates, alkylphenol ethoxylates, amine ethoxylates, thioethers, and combinations thereof so as to wash the oil from the cuttings and into the detergent solution; and separating the washed cuttings from the detergent solution containing the removed oil. The detergent solution containing the removed oil is optionally recycled back into the drilling mud.

Abstract: A well-working fluid such as a drilling mud containing a mixture of sulfonated asphalt and a causticized lignite. The use of the mixture gives a less expensive composition than would be the case with pure sulfonated asphalt and at the same time results in a higher quality fluid in that foaming is reduced and on balance the rheological properties are improved. The invention is of particular applicability in drilling muds using conventional ingredients such as clays and polymeric thickening agents such as CMC.

Abstract: Ether disulfonates or mixtures of ether monosulfonates and ether disulfonates are disclosed as useful surfactants in the recovery of oil.

Abstract: The polyvalent metal ion complex of a fungal polysaccharide, e.g. scleroglucan, aqueous fluids thickened thereby and enhanced oil production processes utilizing said thickened aqueous fluids.

Abstract: A novel ammonium salt of quebracho prepared by reacting quebracho with alkyl quaternary ammonium salts is an effective fluid loss control agent when used in oil base drilling fluids for use in drilling oil and gas wells, especially in water in oil emulsion drilling mud formulations, controlling filtrate loss of the oil-base mud under high temperature and high pressure conditions.

Abstract: Liquid containing composition, and the transport of pumping thereof are disclosed, which compositions achieve maximum fluid friction reduction properties at low concentration of a drag reducing agent such as less than 0.015% by weight and preferably less than 0.01% by weight. The drag reducing agent is a polymer of 2-acrylamido-2-methylpropanesulfonic acid. Finely divided solids, such as coal, may be suspended therein.

Abstract: A new family of terpolymers based on V-vinyl-2-pyrrolidone/sodium styrene sulfonate/methacrylamidopropyltrimethylammonium chloride has been found to be an improved viscosity control additive for water-based drilling muds. The resultant muds display good viscosity characteristics, thermal stability and gel strength when formulated from the terpolymer intramolecular complex having the appropriate polymer concentration and salt level.

Abstract: A composition suitable for scavenging oxygen from aqueous systems, for example those used in well drilling, is provided which comprises a mixture of an oxygen-reactive sulfite and/or bisulfite (sulfite component) and an amount of iron oxide particles sufficient to catalyze the reaction between oxygen and the sulfite component. These particles have certain properties as further described herein. These compositions also serve as corrosion inhibitors in aqueous systems, such as drilling muds, to protect steel components from corrosion. A method is also provided for using such compositions in aqueous systems to scavenge oxygen from such systems, and also H.sub.2 S, if present.

Abstract: Disclosed is a composition including a water swellable clay, and particularly a montmorillonite clay, such as bentonite; xanthan gum; and one or more additional water-soluble gums, for example, guar dextran, acacia or locust bean. The xanthan gum together with one or more additional water-soluble gums prevents montmorillonite clay composition from substantial coagulation or flocculation upon contact with salt contaminated water even in high concentrations of, for example, 15-40% by weight salt. It has been found that xanthan gum in an amount of 0.1-20% based on the weight of the water-swellable clay, i.e. bentonite, in the composition together with one other water soluble gum, for example guar gum, dextran gum, acacia gum and/or locust bean gum in an amount of 1.0-10% based on the weight of bentonite in the composition will provide a clay composition capable of excellent stability without component separation in salt contaminated water.

Abstract: A process and composition for modifying hydrocarbons and/or recovering hydrocarbons from hydrocarbon-bearing formations involving mixing controlled quantities of alkali metal hydroxide and silicon in an aqueous medium to produce an oil modification agent. When recovering hydrocarbons, the composition can be injected into a hydrocarbon-bearing formation to react with and/or thin the entrapped hydrocarbons within the formation. The composition also provides a dispersing agent which aids in release of the hydrocarbon from its entrappment and enhances recovery from the formation.

Abstract: A high temperature structural insulating material useful as a liner for cylinders of high temperature engines through the favorable combination of high service temperature (above about 800.degree. C.), low thermal conductivity (below about 0.2 W/m.degree. C.), and high compressive strength (above about 250 psi). The insulating material is produced by selecting hollow ceramic beads with a softening temperature above about 800.degree. C., a diameter within the range of 20-200 .mu.m, and a wall thickness in the range of about 2-4 .mu.m; compacting the beads and a compatible silicate binder composition under pressure and sintering conditions to provide the desired structural form with the structure having a closed-cell, compact array of bonded beads.