Heavy oil aquathermolysis catalytic viscosity reducer and preparation method thereof

Abstract

The invention provides a heavy oil aquathermolysis catalytic viscosity reducer and a preparation method thereof. The heavy oil aquathermolysis catalytic viscosity reducer comprises o-phenylenediamine, dodecylbenzene sulfonic acid and a transition metal sulfate in a mass mole ratio of 1:0.5-1.5:0.5-1.5. The heavy oil aquathermolysis catalytic viscosity reducer is prepared by the steps of: dissolving dodecylbenzene sulfonic acid in water to obtain a dodecylbenzene sulfonic acid solution with a concentration of 0.5mol / L-1.2mol / L; at 70-110DEG C, adding o-phenylenediamine into the dodecylbenzene sulfonic acid solution to obtain an intermediate product; dissolving the transition metal sulfate in water to obtain a transition metal sulfate solution with a concentration of 0.5mol / L-0.9mol / L; and adding the transition metal sulfate solution into the intermediate product, carrying out reaction at 70DEG C-110DEG C for 2h-4h, and performing vacuum drying to obtain the heavy oil aquathermolysis catalytic viscosity reducer. The heavy oil aquathermolysis catalytic viscosity reducer provided by the invention has better temperature resistance, and can reach more excellent cracking viscosity reducing effect.

Description

technical field [0001] The present invention relates to a heavy oil hydrothermal cracking catalytic viscosity reducer and its preparation method, in particular to a heavy oil hydrothermal cracking catalytic viscosity reducer with double ligands centered on a transition metal and its preparation method, which belongs to the catalytic viscosity reducer technology field. Background technique [0002] With the continuous development of the global economy, conventional oil resources are becoming less and less, and heavy oil, as a potential unconventional energy source, has attracted more and more attention. Considering the current situation of conventional oil exploitation and heavy oil reserves, it can be predicted that heavy oil will occupy an extremely important position in the future national energy strategy. [0003] The hydrothermal cracking catalytic viscosity reduction technology for heavy oil recovery is to inject high-temperature steam into the oil layer and add hydrot...

AI Technical Summary

Problems solved by technology

When organic ferric sulfonate or organic copper sulfonate of transition metal ions reacts with heavy oil under hydrothermal catalysis, due to the high temperature of thermal recovery of heavy oil, the viscosity reducer has poor thermal stability and low efficiency. Most of the current catalytic viscosity reducers cannot Achieve ideal viscosity reduction effect