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Pour Point Depressants
Pour point depressants are used to lower the pour point temperature of the lubricating oil beyond the starting temperature of the engine. The pour point depressants commercially employed are polyalkylnaphthalene, polyalkyphenyl esters or polyalkylmethacrylate.
They are polymeric surfactants containing an n-alkyl chains as tail end that inhibits the formation of wax crystal, thus reducing the viscosity, pour point and yield stress of the fluid. They function effectively in the presence of water by water-wetting paraffin particles, tubing, formation and flowlines. These formulations solubilize the wax and inhibit them from agglomerating further downstream in the reservoir .
Pour point depressants act to lower the pour point of a mineral oil by inhibiting the formation of three-dimensional wax networks, thus improves the fluidity of crude oils. The mechanism of action of a pour point depressant (PPD) is predicated on the interaction or co-crystallization of its linear, non-polar structure with molecules of the wax, while oil solidification due to aggregation of wax molecules into three-dimensional networks is disrupted by the polar or otherwise non-wax-like portion.
The PPDs are commercially available in different forms, including derivatized forms of alkyl methacrylate/acrylate copolymers, olefin copolymers, vinyl ester copolymers, alkylated polystyrene, esters from maleic anhydride copolymers with styrene and alkylated naphthalenes. The PPDs that are commonly used in the lubricant industry are polymethacrylates (PMAs)
ADVANTAGE OF DRILLING STARCH
| Physical State | Liquid |
| Brand | SR |
| Purity | 99.9% |
| Pack Size | 200 kg |
| Form | Liquid |