Catalyst in use for reducing viscosity in hydrothermal cracking and catalyzing thick oil underground well

Abstract

A catalyst for the hydrothermal cracking and catalytic viscosity decreasing of underground thick crude oil under the action of steam contains Si-Al colloid or alumina (20-60 Wt %), clay (5-50) and super-strong solid acid (5-60).

Description

technical field [0001] The present invention relates to a catalyst. Specifically, under the action of water vapor, it can in-situ catalytically crack heavy oil under the oil well and improve the viscosity of crude oil, which is a catalyst for downhole heavy oil hydrothermal cracking catalytic viscosity reduction. Background technique [0002] With the growth of my country's oil demand and continuous exploitation, my country's thin oil oil fields have entered the late stage of exploitation, the reserves of high-quality and easy-to-exploit crude oil are seriously insufficient, and the trend of crude oil becoming heavier is very obvious. At present, the recovery rate of most oil fields does not exceed 50%. As most of the domestic oil fields have entered the secondary and tertiary recovery period, heavy crude oil (ie heavy oil) has become the main object of exploitation. The exploitation of heavy oil has attracted more and more attention from the petroleum industry. It has bec...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned technologies require the addition of hydrogen, methane and other atmospheres, which are difficult to implement and difficult to commercialize