Superheavy oil crude oil reverse-phase demulsifier preparation method

Abstract

The invention provides a superheavy oil crude oil reverse-phase demulsifier preparation method characterized in that: epoxy chloropropane, glycerol and trimethylamine and the like are used as raw materials for preparation of multi segment poly quaternary ammonium salt, methyl acrylate and ethylenediamine are used as raw materials for preparation of 3.0 generation polyamidoamine-amine, and a water-soluble solution, namely a composite type reverse-phase demulsifier is prepared from the poly quaternary ammonium salt, the 3.0 generation polyamidoamine-amine, polymeric aluminium and a solvent according to the mass fraction ratio of (10-30): (10-40): (1-20): (100-500). The reverse-phase demulsifier prepared by the method has good demulsification effect on crude oil exploited from an oil field, and is a reverse-phase demulsifier suitable for chemical flooding produced liquid, and the preparation method provided by the invention has the advantages of simple operation, low requirement on equipment, wide application range and reduces the cost of crude oil exploitation.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a method for preparing an inverse demulsifier for ultra-heavy crude oil. Background technique [0002] Oil and gas pipeline gathering and transportation is an important link in the development process of oil and gas fields in the oil and gas industry. In order to solve the problems in the process of oil and gas gathering and transportation, a large amount of chemical agents must be used. The chemicals used in the process of oil and gas gathering and transportation are called oil and gas gathering and transportation Chemicals, which mainly include demulsifiers, corrosion inhibitors, drag reducers, emulsifiers, etc. The chemical agent that can demulsify and dehydrate emulsified crude oil is called crude oil demulsifier super. Due to the high viscosity and high density of heavy oil, it is difficult to exploit conventional methods. At present, thermal oil recovery methods such ...

AI Technical Summary

Problems solved by technology

Due to the high viscosity and high density of heavy oil, it is difficult to exploit conventional methods. At present, thermal oil recovery methods such as steam huff and puff and steam flooding are the most important extraction methods. However, due to the increasing water content of crude oil and steam injection production , the process of ultra-heavy oil production is accompanied by a large amount of highly emulsified high-temperature oily sewage, which has become a major problem in oilfield production