Application of hydrogen peroxide to thickened oil dilution

Abstract

The invention discloses an application of hydrogen peroxide to thickened oil dilution and relates to the field of thickened oil dilution technology. The thickened oil dilution comprises the steps of well flushing before entering a well and changing a blowout preventer wellhead; determining quantum properties of a stabilizer and a catalyst; determining specific gravity and amount of the hydrogen peroxide and other well working fluids; determining well-entering temperature, well-entering pressure and well control order and then injecting; determining induced flow gas components and controlling; and keeping the well in a closed state. The method of the present invention reduces viscosity of the thickened oil by employing a chemical heat accumulation method instead of a conventional method of steam injection heat radiation. The invention is a revolution in extraction mode and an industrial revolution in oil extraction. The revolution greatly reduces production cost of crude oil, improves recovery efficiency of resources, restores waste oil fields, and at the same time provides a new high quality oil-displacing agent for tertiary oil recovery.

Description

Technical field: [0001] The invention relates to the technical field of heavy oil dilution, in particular to the application of hydrogen peroxide in heavy oil dilution. Background technique: [0002] Heavy oil is crude oil with high asphaltene and colloid content and high viscosity. Usually, crude oil with a surface density greater than 0.943 and an underground viscosity greater than 50 centipoise is called heavy oil, because of its high density, it is also called heavy oil. In addition to high viscosity, heavy oil also has high density, and its fluidity is too poor. Such viscous oil is difficult to be extracted from the ground. [0003] In oil extraction in oil fields, heavy oil has special characteristics of high viscosity and high freezing point, and some technical difficulties are encountered in all aspects of development and application. As far as extraction technology is concerned, colloids, asphaltenes and long-chain paraffins cause the fluidity of crude oil in rese...

AI Technical Summary

Problems solved by technology

[0005] The difficulty of burning oil formations is that the implementation process is difficult and it is difficult to control underground combustion. At the same time, the cost of injecting a large amount of air at high pressure is very expensive, and the chemicals added by the chemical viscosity reduction method cause serious pollution to the formation to some extent.