Preparation method of aging oil treatment agent

Abstract

The invention belongs to an oilfield aged oil treating agent, and particularly relates to a preparation method of an aged oil treating agent. According to the method, the aged oil treating agent is prepared from a phenolic resin-polyoxyethylene-polyoxypropylene copolymer, sodium diethylhexyl sulfosuccinate, nonylphenol polyoxyethylene sodium sulfonate, oxalic acid, brine, ethanol and water. The formula is characterized in that the aged oil treating agent is prepared from 18% of phenolic resin-polyoxyethylene-polyoxypropylene copolymer, 6% of sodium diethylhexyl sulfosuccinate, 12% of nonylphenol polyoxyethylene sodium sulfonate, 8% of oxalic acid, 10% of brine, 15% of ethanol and 31% of water. The treating agent has the advantages of low heating temperature, high dewatering speed and low water content in the purified oil, saves the fuel cost of the united station, does not influence the water content of the output crude oil of the united station after being doped, and ensures the smooth operation of the united station.

Description

technical field [0001] The invention belongs to an oil field aging oil treatment agent, in particular to a preparation method of an aging oil treatment agent. Background technique [0002] The aging oil in Liaohe Oilfield mainly comes from the aging oil recovered from the sewage buffer settling tank and inclined plate degreasing tank of the sewage station, and part of it comes from the ground crude oil recovered from various places. 3 , the viscosity at 80°C is 1859-2684mPa·s, the content of colloid and asphaltene is high, the water content is as high as about 35%, the oil-water separation effect is poor, and the demulsification is difficult. After treatment, it is mixed with a large amount of fresh qualified crude oil and then exported. However, the water content of the aged oil after treatment is still very high, with an average water content of about 24%, which caused the water content of the joint station to exceed the standard, which seriously affected the normal operat...

AI Technical Summary

Problems solved by technology

[0002] The aging oil in Liaohe Oilfield mainly comes from the aging oil recovered from the sewage buffer settling tank and inclined plate degreasing tank of the sewage station, and part of it comes from the ground crude oil recovered from various places. 3 , the viscosity at 80°C is 1859-2684mPa·s, the content of colloid and asphaltene is high, the water content is as high as about 35%, the oil-water separation effect is poor, and the demulsification is difficult. After treatment, it is mixed with a large amount of fresh qualified crude oil and then exported. However, the water content of the aged oil after treatment is still very high, with an average water content of about 24%, which caused the water content of the joint station to exceed the standard, which seriously affected the normal operation of the joint station. production run