Upgrading petroleum and residual fractions thereof
Upgrading petroleum asphaltenes
Upgrading residual oil
Upgrading shale oil
Upgrading shale oil by a combination process
Upgrading shale oil by a combination process
Upgrading solid fuel-derived tars produced by low pressure hydro
Upgrading solid fuel-derived tars produced by short residence ti
Upgrading solvent extracts by double decantation and use of pseu
Upgrading waxy distillates and raffinates by the process of hydr
Urea adduction process for refrigeration oil manufacture
Urea dewaxing of low n-paraffin content oils
Urea dewaxing of naphthene oils
Use of 1-(2-aminoethyl) piperazine to inhibit heat exchange foul
Use of 13C NMR spectroscopy to produce optimum...
Use of 2-amino-1-methoxypropane as a neutralizing amine in refin
Use of a catalyst in a hydrogenolysis process
Use of a metal oxide solid solution for sweetening a sour hydroc
Use of alkanesulfonic acids as asphaltene-dispersing agents
Use of alkanolamines in sweetening sour liquid hydrocarbon strea