Method of inhibiting downhole corrosion of metal surfaces

Details Method of inhibiting downhole corrosion of metal surfaces Method of inhibiting downhole corrosion of metal surfaces

1995-04-28

1997-01-07

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166267, 166310, 166902, 507239, 507939, E21B 4102, C23F 1108

Patent

active

055907164

ABSTRACT:
A method of inhibiting corrosion on metal surfaces and downhole equipment and above surface separation equipment from a mixture of brine and crude oil extracted from underground formations. The method comprises the injection on a periodic basis of an effective amount of an oxime compound having the formula: ##STR1## in which R.sub.1 and R.sub.2 are the same or different and are selected from hydrogen, lower alkyl groups of one to eight carbons or aryl groups. In addition to functioning as a corrosion inhibitor for the metal surfaces in contact with the mixture, the oxime compound is less susceptible to neutralization by contact with acidic species, and is less likely to emulsify the brine and crude oil mixture brought to the surface.

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