Method for synthesizing crude oil demulsifying agent initiator

Abstract

The invention relates to a method for synthesizing a crude oil demulsifying agent initiator. The initiator is novel thermoplastic resin and is synthesized by chemical reaction from organic phenol, organic amine and formaldehyde which are used as starting materials, wherein the molar ratio of the organic phenol to the organic amine to the formaldehyde is 1:(2-4):(2-6). By adopting the initiator, a demulsifying agent which is high in demulsifying speed and dehydration rate and has a good use effect at a low temperature can be synthesized, a lot of heating energy sources of an oil field can be saved, the crude oil demulsifying dehydration cost is reduced, and the pollution to the environment is reduced, so that the initiator has important practical significance for crude oil production, gathering and transportation.

Description

technical field [0001] The invention relates to the technical field of crude oil demulsifiers, in particular to a method for synthesizing an initiator of crude oil demulsifiers. Background technique [0002] In recent years, with the continuous development of oilfields, the oilfields are gradually aging, and the water content in the produced crude oil is getting higher and higher, and some crude oils are even becoming heavier. In order to improve oil recovery, each oil area adopts different enhanced oil recovery technologies according to the formation characteristics, such as alkali flooding, acid fracturing, foam flooding, polymer flooding, steam flooding, surfactant flooding, surfactant-polymer II, etc. The application of these technologies, such as elemental flooding and alkali-surfactant-polymer ASP flooding, provides effective measures for oilfield production stabilization and increase, and has achieved huge economic benefits. However, due to the implementation of thes...

AI Technical Summary

Problems solved by technology

The degree of emulsification of the produced crude oil is further enhanced, and there are highly alkaline crude oil, high acid value crude oil, heavy oil, extra heavy oil, high pour point crude oil, tertiary oil recovery crude oil, high salinity water quality crude oil, etc. Crude oil and water form oil-in-water (O / W) and multiple (O / W / O, W / O / W) emulsions, resulting in differences in the state of crude oil, and the oil field currently has high demulsification and dehydration temperature, which increases the Large amount of sewage, unsatisfactory discharge of sewage, etc., resulting in a huge waste of energy

Moreover, it is difficult for conventional demulsifiers to deal with such produced fluid, which makes the treatment cost high

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