Transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer and preparation method thereof

Abstract

The invention relates to a viscosity reducer and a preparation method thereof. The preparation method for the transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer is characterized by comprising the following steps of: 1) adding fatty acid alkyl ester and dichloroethane into a container in a molar mass ratio of 1:2.0-3.0; 2) placing the container into an ice water bath, dripping chlorosulfonic acid in a molar mass ratio of the fatty acid alkyl ester to the chlorosulfonic acid of 1:1.3-2.0, performing sulfonation reaction, and performing ageing after the sulfonation is finished to obtain an intermediate product; and 3) adding a transition metal oxide into the intermediate product in a molar mass ratio of the fatty acid alkyl ester to the transition metal oxide of 1:0.17-0.25, performing complex reaction for 1 to 2 hours, standing and demixing after the reaction is finished, and removing the water of the upper layer, wherein the paste of the lower layer is the transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer. The viscosity reducer prepared by the method has good viscosity reducing effect at the temperature of 200 DEG C, and simultaneously has the characteristics of easily obtained raw materials and simple preparation process.

Description

technical field [0001] The invention relates to a viscosity reducer for heavy oil hydrothermal cracking viscosity reduction exploitation and a preparation method thereof. Background technique [0002] Heavy oil, also known as "heavy oil", is an unconventional oil resource with huge reserves but difficult to exploit. In recent years, the advancement of science and technology has made the development of heavy oil increasingly active worldwide, and my country has also formed a considerable scale of heavy oil production. According to statistics, after more than 50 years of exploration, my country has discovered more than 70 heavy oil fields in 12 basins across the country, established 5 major development and production areas, and the output has accounted for 10% of the country's total oil output. Heavy oil is playing an increasingly important role in my country's energy structure. [0003] The hydrothermal cracking viscosity reduction recovery technology is a new technology de...

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Problems solved by technology

[0004] The few hydrothermal catalytic cracking viscosity reducers currently reported generally use non-renewable petrochemical products (such as petroleum carboxylates, petroleum naphthenates, etc.) As the oil is gradually depleted and gradually reduced, the price will also rise accordingly; in practical applications, they also have shortcomings such as high operating temperature, poor universality, and poor contact with crude oil, making it difficult to meet the needs of on-site mining