Abstract:
An aqueous drilling fluid dispersant and a method of drilling wells using as the drilling fluid dispersant a water soluble salt of a sulfonated, dialkyl substituted benzodioxole of prescribed type.
Abstract:
A process for selectively converting n-paraffins to secondary alkyl primary amines where byproduct formation is substantially reduced which comprises contacting the n-paraffin in a plurality of reaction zones with a nitrating agent, removing gaseous reaction products and water from the liquid products of each of the reaction zones and introducing nitrating agent along with liquid product from the preceding zone into each succeeding reaction zone, thereby effecting an overall conversion to nitroparaffin not exceeding 25 weight percent of the n-paraffin, and thereafter hydrogenating the nitroparaffin to the amine.
Abstract:
Heavy hydrocarbon oils are desulfurized at high temperature and high space velocity in the presence of a catalyst comprising a Group VIII metal and a Group VI metal or their compounds and also containing as an agent for reducing the deactivation rate of the catalyst, a small amount of a Group VII metal or compound thereof.
Abstract:
Alkylaromatic hydrocarbons are converted in the presence of a composite catalyst composed of a hydrogen mordenite, alumina and a sulfided Group VIII metal.
Abstract:
Nitroalkyl nitrate and peroxynitrates characterized by the formula:
where R and R1 are hydrogen or alkyl of from 1 to 10 carbons, where X is R2O-CN, Cl, phenyl, -ONO2,
where R2 is alkyl of from 1 to 10 carbons or phenyl and R3 is hydrogen, phenyl or alkyl of from 1 to 10 carbons, and where Y is -OONO2 or -ONO2, said nitroalkyl nitrates being prepared by first contacting a substituted alkene of the formula:
where R, R1 and X are as heretofore defined with a mixture of dinitrogen tetroxide and oxygen to form substituted nitroalkyl peroxynitrate of the formula:
D R A W I N G where R, R1 and X are as heretofore defined and second contacting said peroxynitrate with a reducing agent to form said substituted nitroalkyl nitrate, the first and second contacting being conducted in the presence of inert liquid. The nitroalkyl nitrate final products of the invention are useful as fuel additives to increase power output of petroleum distillates such as gasoline and kerosene. Further, they are useful as intermediates in the preparation of surfactants, fuel and lubricant additives, insecticides, fungicides (e.g. controlling early blight in bean plants), pharmaceuticals and polymers.
Abstract:
In the method of preparing sulfurized, alkoxylated, inorganic phosphorus acid free, steam hydrolyzed polyalkene-P2S5 reaction product useful as a detergent-dispersant in lubricating oil compositions of improved antioxidant and odor properties comprising contacting polyalkene and P2S5 in the presence of a catalytic amount of sulfur to form the polyalkene-P2S5 reaction product, contacting the resultant polyalkene-P2S5 reaction product with steam to form an inorganic phosphorus acid containing hydrolyzed polyalkene-P2S5 reaction product, removing inorganic phosphorus acid from the hydrolyzed polyalkene-P2S5 reaction product, contacting the inorganic acid free, hydrolyzed polyalkene-P2S5 reaction product with alkylene oxide, the improvement which comprises the step selected from the group consisting of (1) contacting said inorganic acid free, steam hydrolyzed polyalkene-P2S5 intermediate product with added sulfur, and (2) contacting the alkoxylated, inorganic phosphorus acid free, steam hydrolyzed polyalkene-P2S5 reaction product with added sulfur. The invention is also directed to the resultant sulfurized alkoxylated product and lubricant compositions thereof.
Abstract:
A process for producing sour gas wells whereby attendant problems due to sulfur deposition within the producing formation, well and surface equipment are prevented or alleviated by contacting the formation, well and surface equipment with a chemical composition whose aqueous solution will solubilize the sulfur by primary chemical reaction and containing a wetting agent to facilitate and accelerate the sulfur dissolution and removal.
Abstract:
In seismic delineation of sedimentary section below the surface of a seismic energy propagation medium, methods and articles for carrying out the methods are disclosed. A basic method for generating and shaping a seismic energy pulse comprises (1) generating a first energy pulse downwardly through the shortest distance to a point at the lower end of a vertical straight explosive material for forming a compressional forward portion of the seismic energy pulse, and (2) generating a second energy pulse later to form a rarefactional aft portion of the seismic energy pulse. By varying the length of the explosive material the lengths of the forward and aft portions are varied for controlling the shape of the seismic energy pulse, and by varying the position of the point of ignition of the linear explosive material, additional shaping of the seismic energy pulse results. A basic article for carrying out the above method comprises a vertical straight explosive material, as a straight piece of ''''Primacord,'''' suspended at a desired predetermined depth, cut to a predetermined length, and detonated by a blasting cap at a predetermined position from the upper end to the lower end for producing a seismic energy pulse of the desired shape, a very thin elongated shape being preferable for attenuation of both the secondary bubble amplitude and time duration.
Abstract:
A fixedly positioned marine platform held at the ocean floor by piles and the like, having a relatively flat concrete apron disposed about the platform lower end and also supported on the ocean floor. The apron functions to stabilize the platform against lateral forces caused by water and wave motion, and also avoids scouring which would otherwise occur about the platform legs and piles due to movement of water along the ocean floor. The apron further lowers the center of gravity of the structure and improves its resistance to vibrations and resonance effects due to wave motion.
Abstract:
When supplemental oil recovery methods such as steam flooding are applied to viscous oil containing formations such as tar sand deposits, poor vertical conformants frequently results, particularly when the oil formation contains one or more zones having a permeability substantially less than other zones in the formation. Recovery efficiency is improved if the injection well is completed so as to establish separate communication means between the surface and each of the zones of different permeability. After injection of a thermal recovery fluid such as steam into the more permeable layer is initiated, injection of a hydrocarbon solvent, either gaseous or liquid, is initiated by the separate communication means into the less permeable zone, and from about .05 to about .5 pore volumes of solvent material is introduced into the less permeable zone. This is displaced with gas such as natural gas or low molecular weight gaseous hydrocarbons, and then steam injection into the less permeable zone will be maintained at a value less than the injection pressure into the more permeable zone for a period until the desired receptivity in the lower permeability zone has been obtained, after which the injection pressure in the two zones is essentially equalized.