Oil-drilling muds

Adding the carboxymethyl group makes the starch less prone to damage by heat and bacteria. Carboxymethyl starch is used as an additive in oil drilling mud. It is also used in the goo that makes ultrasound examinations so messy. Carboxymethyl starch is also called a starch ether. 

See also methacrylate odor absorbers, 169 oil drilling mud, 146 oil of wintergreen, 167, 186. See also methyl salicylate... 

A final important class of composite materials is the composite hquids. Composite liquids are highly stmctured fluids based either on particles or droplets in suspension, surfactants, liquid ciystalhne phases, or other macromolecules. A number of composite liquids are essential to the needs of modem industiy and society because they exhibit properties important to special end uses. Examples include lubricants, hydraulic traction fluids, cutting fluids, and oil-drilling muds. Paints, coatings, and adhesives may also be composite liquids. Indeed, composite hquids are valuable in any case where a well-designed liquid state is absolutely essential for proper delivery and action. 

The applications of barium compounds are varied and include use as oil-drilling mud. Barium carbonate is sometimes employed as a neutralizing agent for sulfuric acid and, because both barium carbonate and barium sulfate are insoluble, no contaminating barium ions are introduced. The foregoing application is found in the synthetic dyestuff industry. 

The expected rising cost of petroleum-derived, synthetic polymers has now elicited interest in natural polymers from replenishable resources. Microbial polysaccharides are also increasingly being used in the recovery of crude oil. During 1975, 1800 tons of xanthan were used in oil-drilling operations it is predicted that, by 1980, 3000 tons of xanthan will be used in oil-drilling muds.33... 

Surfactants are very important in the chemical industry, appearing in such diverse products as detergents, emulsion polymer-based adhesives, surface coatings, pharmaceuticals, cosmetics, motor oils, drilling muds used in petroleum prospecting, ore flotation agents,... 

AF. [Harcros] Silicone or nonsilicone anttfoams to agric., cutting oils, drilling muds, effluent treatment, solvs., adhesives, latex paints, inlu, food applies., detergents, textiles. 

Gardiquat. [Albright Wilson Am. Albright Wilson UK] Benzalkonium chloride bactericide, germicide for disinfectants and antisepdcs for hospitals, food processing, oil drilling muds. 

Scavenger 1200. [Western Nutrients] Hydrogen sulfide scavenger for oil drilling muds. 

Super High Grade. [Eagle-Pidier] Lead sulfide fiictiem additive in clutch facings, disc brake pads, railroad brake shoes as nonreactive dense material for oil-drilling muds. 

Low solubility in mineral oils (drilling mud), acids, alkalis, organic compounds and solvents. 

Chem. Descrip. Methyl glucoside CAS 97-3(T3 EINECS/ELINCS 202-571-3 Uses Chem. intermediate for improving processing char, and props, in oil drilling muds for onshore and offshore drilling, soap/cosmetics, urethane foams, phenolic adhesives, textiles, surf, coatings shale stabilizer... 

An aqueous bentonite suspension of density 1300kg/m, used to model an oil drilling mud, is to be pumped through the annular passage between the two concentric cylinders of radii 101.6 mm and 152.4 mm, respectively. The suspension, which behaves as a Bingham plastic fluid with /xg = 20 mPa s and r = 7.2 Pa, is to be pumped at the rate of 0.13m /s over a distance of 300 m. Estimate the pressure drop. Over what fraction of the area of the annulus, the material is in plug flow ... 

Tetrasodium etidronate scale inhibitor, oil industry Bis (hexamethylene) triaminepentakis (methylenephosphonic acid) scale inhibitor, oil-drilling muds Etidronic acid scale inhibitor, paper... 

Cellulose sulfate esters with the proper D.S. values are water soluble and have applications such as food thickeners, textile sizes, viscosity modifiers for oil-drilling muds and in pharmaceutical applications. 

Poly-O-sulfate Cellulose sulfate. Ushercell [9032-43-3] Used in food thickeners, textile sizes and viscosity modifiers for oil-drilling muds. Excipient. Microbicidal gel for prevention of HIV and sexually transmitted diseases. Contraceptive. Sol. H2O. 

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