Abstract: A receptacle device comprising a tapered container having an opening and a cover pivotally attached to the opening in such a manner that the cover opens free of the opening so that a series of containers can be nested one within another without interference with the attachment of the covers and secondarily allowing easy placement and removal of sacks, bags or liner inserts.

Abstract: A process for protecting the threaded male end of tubing or the like in a drilling operation when, e.g., tubing is pulled from the ground comprising placing the male end of tubing in a transport means including a base on at least one rolling means and transporting said male end of tubing in the transport means while the female end of the tubing is engaged or suspended in the drilling operation.

Abstract: A new and improved method of forming a color graphic display from seismographic input data is disclosed. The input data sequence is processed to obtain the absolute value of each amplitude value and to select the maximum amplitude value of each oscillation of the waveform. A predetermined number of the largest selected values are classified into a first range of values, the remaining values are scaled according to magnitude into a preset number of ranges and an assignment table is formed with each range being represented by a primary or secondary color. Data corresponding to a first group of ranges of input data is processed to form a representation for a particular color. Similarly, the remaining data groups, corresponding to the remaining ranges, are processed to form a representation of the remaining colors. The image of each representation is sequentially transferred to a sheet and the images are colored with their respective colors, thus producing a color display of the seismic data.

Abstract: A tracer system is disclosed which is especially useful for following fluid flow in underground reservoirs. Metal chelates, preferably derived from EDTA and containing a functional group which reacts with a fluorogenic agent, are used as tracers. Liquid chromatography and fluorescense spectroscopy are used to detect the metal chelates.

Abstract: An oil-in-water emulsion of crude oil, water and surface active agents is broken by adding additional surface active agents, preferably relatively high equivalent weight petroleum sulfonates, to the emulsion and then subjecting the emulsion to conventional emulsion breaking techniques.

Abstract: A process for the recovery of isobutylene as tertiary butyl alcohol from a stream of C.sub.4 hydrocarbons comprising contacting the stream with an aqueous acid solution comprising from 50 to 80 wt % hydrocarbyl sulfonic acid, recovering from the resultant mixture an aqueous acid phase containing tertiary butyl alcohol and recovering from the acid phase the product tertiary butyl alcohol.

Abstract: A precipitated red iron oxide, having high crystallinity, low acicularity, unifrom particle size, and purity of color, is produced by aerating an alkaline mixture of copperas and soda ash to form seed crystals, increasing the temperature, adding additional copperas, and aerating the mixture to form red oxide crystals of the desired color. The final color can vary from a light salmon to a dark maroon.

Abstract: Trichlorofluoromethane is used as a promoter in the polymerization and copolymerization of ethylene with supported Ziegler-type vanadium compound/alkylaluminum compound catalysts in the presence of hydrogen. The use of the promoter leads to the formation of non-rubbery, semi-crystalline polymers in high yields, does not alter the basic molecular weight distribution of the polymers, permits independent control of molecular weight by hydrogen, and imparts no significant level of halogen to the product.

Abstract: The compositions comprise organic or inorganic pigments mixed with a combination of (a) waxy materials such as natural, synthetic, or petroleum waxes and (b) wax-like materials such as polyethylene glycols or hydrocarbon resins. These compositions are easily dispersible in thermoset and thermoplastic resins, require no special equipment, and can be let down directly.

Abstract: The calciner is an elongated, insulated chamber, in which material is fed to counter-rotating screw conveyors. The material is calcined by heat radiating from a muffle plate interposed between the conveyors and gas-fired burners. This radiant heating, applied evenly to material having a constantly-exposed fresh surface, results in increased production, lower fuel cost per pound of product, and higher quality product.

Abstract: An alkali metal silicate solution is added to a slurried mixture of yellow iron oxide monohydrate and zinc oxide (or magnesium oxide). After thorough mixing, and the mixture is filtered, dried, and calcined, giving a ferrite tan pigment.

Abstract: A high pressure, high temperature reactor device having a pair of spaced tube sheets for supporting a tube nest, one tube sheet being formed with a bellows to compensate for expansion and contraction of the tube nest longitudinally during temperature changes and the second tube sheet supporting the opposite end tubes of the tube nest, with injector tubes mating with each reactor tube and projecting through the reactor shell.

Abstract: Copperas solution is purified and mixed with a silica-containing material, such as fumed silica. The mixture is then dried to give a monohydrate (FeSO.sub.4.H.sub.2 O)/silica material. Calcination of this substance results in a copperas red oxide having improved color characteristics and lower losses due to uncalcined sulfate. The amount of silica added is 0.25-10 wt. %, based on the finished oxide product.

Abstract: This process reduces the soluble iron found in the final effluent of a plant making iron oxide by the Penniman-Zoph scrap process. The finished oxide product slurry is separated from the scrap iron, and the slurry is aerated while the pH is maintained between about 3.0 and 5.0. As the soluble iron is converted to product oxide, the pH of the system rises toward the higher value.

Abstract: A process useful for recovering surfactant and oil of low water content in surfactant flood oil recovery projects is disclosed. A produced oil in water emulsion is treated with brine and partitioning agent, preferably isopropyl alcohol, by mixing and settling to form three phases, an oil phase containing a minor amount of surfactant, a partitioning agent phase containing most of the surfactant originally present in the produced emulsion, and a brine phase containing a minor amount of alcohol.

Abstract: The material to be dried, such as coal, is mixed with an aromatic liquid, such as benzene, which removes a portion of the available water from the coal. The mixture of water and benzene, called an azeotrope, has a minimum boiling point relative to the surrounding liquid medium and is easily removed from the total mixture as a vapor. The condensed vapor forms two phases which are separated, furnishing a water stream for use elsewhere in the overall coal processing system and a benzene steam for recycle use. The dried coal/benzene slurry is further processed.

Abstract: A receptacle device useful for receiving material, comprising a container having an open end, a closure or lid detachably and pivotally mounted on the open end of the container and an operating member connected to the closure so that the closure can be raised to and from a closed position in response to operation of the operating member.