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In drilling fluids

ALCOHOLS,HIGHERALIPHATIC - SURVEY AND NATURALALCOHOLSMANUFACTURE] (Vol 4) -in drilling fluids PETROLEUM - DRILLING FLUIDS] (Vol 18)... [Pg.342]

Cross-linked macromolecular gels have been prepared by Eriedel-Crafts cross-linking of polystyrene with a dihaloaromatic compound, or Eriedel-Crafts cross-linking of styrene—chloroalkyl styrene copolymers. These polymers in their sulfonated form have found use as thermal stabilizers, especially for use in drilling fluids (193). Cross-linking polymers with good heat resistance were also prepared by Eriedel-Crafts reaction of diacid haUdes with haloaryl ethers (194). [Pg.563]

Sodium carboxymethyl cellulose [9004-32-4] (CMC) and hydroxyethyl cellulose [9004-62-0] (HEC) are the ceUulosics most widely used in drilling fluids (43). CMC is manufactured by carboxymethylation of cellulose which changes the water-insoluble cellulose into the water-soluble CMC (44). Hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose (CMHEC) are made by a similar process. The viscosity grade of the material is determined by the degree of substitution and the molecular weight of the finished product. [Pg.179]

Acrylate and acrylamide polymers have several uses in drilling fluids, one of which is for filtration control. Sodium polyacrylates [9003-04-7] having molecular weights near 250,000 are exceUent temperature-stable filtration control agents for both fresh- and salt water muds, provided the concentration of water-soluble calcium is <400 mg/L (83). The calcium ions are precipitated using a carbonate such as soda ash, before adding the polyacrylate at concentrations up to ca 6 kg/m (3 Ib/bbl). [Pg.181]

Corrosion Theory 1259. Forms of Corrosion Attack 1268. Factors Influencing Corrosion Rate 1292. Corrodents in Drilling Fluids 1300. Corrosion Monitoring and Equipment Inspections 1312. Corrosion Control 1323. Recommended Practices 1340. [Pg.498]

See other pages where In drilling fluids is mentioned: [Pg.21]    [Pg.76]    [Pg.78]    [Pg.87]    [Pg.96]    [Pg.149]    [Pg.151]    [Pg.151]    [Pg.152]    [Pg.186]    [Pg.285]    [Pg.406]    [Pg.417]    [Pg.440]    [Pg.458]    [Pg.463]    [Pg.468]    [Pg.506]    [Pg.565]    [Pg.566]    [Pg.587]    [Pg.588]    [Pg.648]    [Pg.661]    [Pg.802]    [Pg.802]    [Pg.803]    [Pg.879]    [Pg.884]    [Pg.900]    [Pg.902]    [Pg.902]    [Pg.904]    [Pg.905]    [Pg.953]    [Pg.953]    [Pg.1057]    [Pg.1063]    [Pg.1085]    [Pg.1085]    [Pg.318]    [Pg.179]    [Pg.180]    [Pg.180]    [Pg.181]    [Pg.209]   
See also in sourсe #XX -- [ Pg.627 , Pg.628 , Pg.629 ]



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