Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Case oil

The following are some cases (Oil Insurance Association, 1971) in which human error is involved as one of several errors in a chain. [Pg.168]

Hand lotions, of the emulsion type, are also, in most cases, oil in water emulsions. A true emulsifying agent is usually used to form the emulsion and for cleansing properties. Vegetable gums, like tragacanth or Irish moss extract, are added, not only to stabilize the emulsion but to increase the emollient properties, because of the added viscosity effect. [Pg.8]

A common response to fish poisoning is diarrhea, often in the form of loose and watery stools accompanied with excessive water loss. However, in some special cases, the uncontrollable urge of bowel movements and discharges do not involve a noticeable loss of water. In those cases, oil is discharged or leaked through the rectum, and this type of poisoning responses is called keriorrhea or keriorrhoea. [Pg.3]

As determined earlier, each band of produced water contains 70 pounds of equivalent NaCl, and for the above cases, oil for marketing—after dehydration to very low water coo-tents—still will contain 70 and 140 pptb, with no further desalting. [Pg.150]

As with gases, the coefficient of isothermal compressibility of oil usually is called compressibility or, in this case, oil compressibility. [Pg.231]

Lens-Type Traps. These form in limestone and sand. In this type of trap the reservoir is sealed in its upper regions by abrupt changes in the amount of connected pore space within a formation. A trap formed in sand is shown in Fig, 7(a). An example is the Burbank Field in Osage County, Oklahoma. This type of trap may occur in sandstones where irregular deposition of sand and shale occurred at the time the formation was laid down. In these cases, oil is confined within the porous parts of the rock hy the nonporous parts of rock surrounding it. A lens-type trap formed in limestone is shown in Fig. 7(b). In limestone formations there are frequent areas of high porosity with a tendency to form traps. Examples of limestone reservoirs of this type are found in the limestone fields of West Texas. [Pg.1245]

In nearly all cases, oil in an underground reservoir has dissolved in it varying quantities of gas that emerges and expands as the pressure in the reservoir is reduced. As the gas escapes from the oil and expands, it drives oil through the reservoir toward the wells and assists in lifting it to the surface. Reservoirs in which the oil is produced by dissolved gas escaping and expanding front within the oil are called dissolved-gas-drive reservoirs. See Fig. 19. [Pg.1250]

The most important emulsions are water-in-oil emulsions (W/O emulsions) and oil-inwater emulsions (O/W emulsions). Oil designates here any liquid not soluble in water. In an oil-in-water emulsion, water forms the continuous phase with dispersed drops of oil (Fig. 12.9). Milk is one example. In case oil is in the continuous phase, we have a water-in-oil emulsion. Introductions into emulsions are Refs. [4,538,540],... [Pg.260]

The rest of the chapter deals with the hydration chemistry of Portland and composite cements at temperatures outside the range 15-25 C, including that of autoclave processes, and with specialized uses of cements in casing oil wells and in making very high strength materials. [Pg.345]

Figure 15.14. The droplet size depends on the concentration of surfactant the more surfactant, the lower the interfacial tension will be, and therefore the smaller the droplets will become. As the pressure over the membrane is increased, the flow of the dispersed phase (in this case oil) is increased the droplets grow faster, and the surfactant has to dilfuse faster to the interface. This results in a higher dynamic interfacial tension, and larger droplets. (After van der Graaf Schoen et al. 2004.)... Figure 15.14. The droplet size depends on the concentration of surfactant the more surfactant, the lower the interfacial tension will be, and therefore the smaller the droplets will become. As the pressure over the membrane is increased, the flow of the dispersed phase (in this case oil) is increased the droplets grow faster, and the surfactant has to dilfuse faster to the interface. This results in a higher dynamic interfacial tension, and larger droplets. (After van der Graaf Schoen et al. 2004.)...
Soils can also penetrate into the fiber. The interior of the cotton fiber, the lumen, is relatively hollow, and soils may collect there. Polyester fibers are solid, but if polyester is washed above its glass transition temperature Tg, it becomes relatively fluid. In this case, oils on the fiber surface can mix with the polyester itself. When soils penetrate into the fiber, they are nearly impossible to remove. [Pg.3134]

For more sticking effect, you can mix the gasoline with half roofing tar or crank-case oil. Chain-Saw oil increases the burning rate. But, for all intents and purposes, plain gasoline will serve. [Pg.103]

A different technique was used by Durand Keklikian and Partch [16] to generate particles with a surface coating. Previously, a more volatile substance was coated on a less volatile particle. For their case, oil droplets coated with metal oxide were generated. This was accomplished by nebulizing solutions of titanium or aluminum alkoxides in oil. Hydrolysis of the alkoxide to the oxide occurred in the presence of water vapor, forming a solid shell encapsulating the oil droplet. [Pg.274]

Once processed into products such as motor gasoline and fuel oil, most of the petroleum is burned in engines or boilers to provide energy for transportation, space heating, or electricity. In these combustion processes, the petroleum fuel is oxidized. Because of incomplete oxidation, small amounts of hydrocarbon emissions result. These emissions often contain much larger percentages of combustion by-products such as polycyclic aromatic hydrocarbons (PAHs) than the initial petroleum products. Incomplete combustion and heat also alter the composition of crank case oils and lubricants. [Pg.78]

Another small advantage to the fuel cell is the lack of need for crankcase oil. In 1991, 5.250 billion liters of crankcase motor oil were discarded in the United States. A significant amount of this oil was used as fuel but about 25% was illegally dumped or placed in a landfill. All this contributed to environmental pollution. The Fuel cell automobile does not use any crank case oil so there will be none to throw away. [Pg.146]

Application of the same pesticide at the same time, proportion of the landscape and dose but only to orchards, as in the first case, oil seed rape, or intensively managed pasture. The treatment resulted in population size depressions of 8, 1, and <1, and the proportion of males affected of 14,... [Pg.91]

Monomer Droplets. The monomer droplets serve primarily as reservoirs that supply monomer to the reaction sites in the polymer particles. These droplets can also contain a variety of other oil-soluble ingredients including dissolved polymer, chain transfer agents, and in unusual cases oil-soluble initiator. The monomer and other ingredients, if they have the requisite water solubility, are transported to the primary polymerization locus in the polymer particles. Reaction phenomena that can occur in the monomer droplets include the following ... [Pg.133]

Etbylflo. [Ethyl] Polyalphaolefins synthetic lubricants for automotive cr -case oils, hydraulic fluids, gear and transmission fluids, comptesscv lubricants, metalworking fluids, personal care items. [Pg.137]

Conradson residue from used crank-case oil... [Pg.83]

Oily waste waters suitable for treatment by UF contain 0.1 to 10% oil in a stable emulsion. A limited amount of free oil can be processed but usually quantities above 1 to 5% are removed with a centrifuge prior to UF. The difficulty with free oil or unstable emulsions is that the oil accumulates at the membrane interface and may form a continuous layer which preferentially wets the membrane over water (the surface tension is lower). In this case, the membrane will pass oil and retain water. (See Chapter 2 on the bubble point test). The secret of successful UF is to maintain discrete and stable emulsoid particles of oil (generally over 0.1 m in size) which are larger than the membrane pore size (0.01 p or below). When this is the case, oil in the permeate will generally be less than 10 to 50 ppm. [Pg.226]

Because the interfacial tension can change with time after an initial spreading of oil, 5 may be time-dependent, and it follows that, in some cases, oils may act as defoamers only for a limited amount of time. The dynamic interfacial tensions were studied (37, 40, 47) for various crude oil and foam-forming surfactant solution combinations. Some of these systems exhibited dynamic interfacial tensions, but typical variations over up... [Pg.182]

In most practical cases, oil field cement slurries contain several water-soluble organic additives. Therefore, cement interstitial liquid is an aqueous solution that is likely not to behave as a Newtonian fluid. Specifically, if the organic additives are long-chain polymers, the interstitial fluid will display a pseudoplastic behavior, as described, for instance, by the power law model. In turn, the slurry will display a yield pseudoplastic behavior as described for example by the Herschel-Bulkley model (see previous sections). [Pg.622]

Thin, liquid films as such are not only systems of interest, they also occur frequently in nature and in laboratory practice, for example, in foams. In emulsions, to name another case, thin water films between oil (instead of air ) phases are present in a concentrated emulsion of small oil droplets dispersed in water. The properties of the thin water film determine the interaction forces between the oil droplets and will determine, for example, whether the emulsion in stable. Also the reverse case, oil films in water, occurs. Extremely thin ( 5 nm) oil-in-water films are prototypes of lipid bilayers occurring in biological membranes. Thin liquid films on a solid... [Pg.332]

PHPs are prepared through a HIPE polymerization route. The continuous phase of the emulsion contains monomer(s), cross-linking agent, surfactant, and in certain cases, oil-phase soluble polymerization initiator as well as additive(s)/filler(s) . The dispersed... [Pg.175]

Two examples of distillation processes are petroleum distillation and the production of alcoholic beverages. In the first case, oil is separated into its many components, with the lightest at the top and the heaviest on the bottom. In the latter, the gas is enriched in ethanol, which is later recondensed. [Pg.170]

Both interfacial polycondensation and polyaddition involve two reactants dissolved in a pair of immiscible liquids, one of which is preferably water, which is normally the continuous phase, and the other one is the dispersed phase, which is normally called the oil phase. The polymerization takes place at the interface and controlled by reactant diffusion. Researches indicate that the polymer film occurs and grows toward the organic phase, and this was visually observed by Yuan et al. In most cases, oil-in-water systems are employed to make microcapsules, but water-in-oil systems are also common for the encapsulation of hydrophilic compounds. Even oil-in-oil systems were applied to prepare polyurethane and polyurea microcapsules. ... [Pg.297]

The replacement of transfer case oil seal is shown as figure. Disconnect the drive shaft from the transfer case, use the flat head screwer to remove the oil seal... [Pg.64]

Caution Do not damage the housing hole during the disassembly. Then use the special tools to knock the transfer case oil seal into the transfer case. It should pay attention to the installation dire tion of oil seal. The oil seal is flush with the port of transfer case. Shown as figure. Coat the lip of oil seal with the specified general synthetic gear oil. [Pg.64]


See other pages where Case oil is mentioned: [Pg.401]    [Pg.34]    [Pg.531]    [Pg.455]    [Pg.865]    [Pg.305]    [Pg.442]    [Pg.509]    [Pg.8]    [Pg.9]    [Pg.143]    [Pg.90]    [Pg.49]    [Pg.1022]    [Pg.248]    [Pg.30]    [Pg.551]    [Pg.22]    [Pg.183]    [Pg.184]   
See also in sourсe #XX -- [ Pg.183 , Pg.184 ]




SEARCH



Case 6 New Gas Reservoir Production with Offshore Oil Site

Case Studies of Oil Tanker Spill-Related Accidents

Maintenance Influence on Major Accidents in the Oil and Gas Industry Case Studies

Special Cases of Castor Oil and Ricinoleic Acid

© 2024 chempedia.info