Nano catalytic viscosity reducer for thickened oil aqua-thermolysis and preparation method thereof

Abstract

The invention discloses a nano catalytic viscosity reducer for thickened oil aqua-thermolysis and a preparation method thereof. The catalytic viscosity reducer is prepared from following materials in parts by weight: 1 to 50 parts of metal salt, 10 to 200 parts of solvent, 5 to 150 parts of alcohol, 5 to 150 parts of reducing agent, 100 to 500 parts of alkali solution, 50 to 300 parts of sulfonic acid, and 100 parts of distilled water through reduction reactions, wherein the sizes of the viscosity reducer are in the range of 1 to 10 nm. The nano catalytic viscosity reducer for thickened oil aqua-thermolysis has the characteristics of strong universality, and good viscosity reducing effect, and is capable of catalyzing thickened oil to carry out catalytic cracking reactions in a lower temperature (not larger than 200 DEG C). The viscosity of thickened oil is largely reduced after the reactions, and the viscosity reducing rate reaches 80% or more.

Description

technical field [0001] The invention relates to the field of heavy oil exploitation, and more particularly relates to a heavy oil hydrothermolysis nano catalytic viscosity reducer and a preparation method thereof. Background technique [0002] The world's oil consumption is increasing year by year, but the recoverable oil reserves are decreasing year by year, especially the reserves of easy-to-recover thin oil are getting less and less. The world's energy crisis is becoming more and more serious. Many countries have raised the oil problem to the height of national security. . There are huge reserves of heavy oil in the world. In order to alleviate the tension of energy and maintain the continuous increase of oil production, the exploitation and utilization of heavy oil have attracted extensive attention, especially in our country. The exploitation of heavy oil has more realistic and urgent significance. . [0003] At present, several heavy oil recovery methods have been de...

AI Technical Summary

Problems solved by technology

Solid heteropolyacids, superacid catalysts reduce catalytic activity when exposed to water

Moreover, some of the hydrothermal catalytic cracking viscosity reducers reported in the literature have the disadvantages of high operating temperature (greater than or equal to 240 ° C), poor universality, and poor contact with crude oil, so it is difficult to popularize and apply them in the field

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