Preparation method of thickened oil viscosity reducer with dual structure of hydrogen donor and catalytic center

A heavy oil viscosity reducer and catalytic center technology, which is applied in the field of hydrothermal cracking catalytic viscosity reducer preparation, can solve the problems of construction equipment and process difficulties, increased economic costs, and poor universality, so as to shorten the development time and improve Quality, low cost effect

Inactive Publication Date: 2012-06-27
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to this technology is the development of hydrothermal cracking catalytic viscosity reducer, but the hydrothermal cracking catalytic viscosity reducer currently reported generally has the problem of poor universality
Scholars at home and abroad have found that for some heavy oils that are not effective in reducing viscosity by using hydrothermal cracking catalytic viscosity reducing agents alone, adding some hydrogen donors (such as toluene, formic aci

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Design: Using MS4.4 (Materials Studio4.4-material science simulation calculation) software to design the structure of the viscosity reducer, using thiophene C4H4S as the model compound, combining the common hydrogen donor structure (toluene) with the catalytic center (metallic copper Atoms) are combined together to simulate and calculate the hydrothermal cracking catalytic reaction of thiophene C4H4S. Comparing the calculation results of the hydrothermal cracking catalytic reaction with or without the participation of catalytic viscosity reducer, it is found that the reaction is activated after the participation of catalytic viscosity reducer The energy can be reduced from 2.484ev to 0.955ev, indicating that the designed viscosity reducer has a significant catalytic effect on the hydrothermal cracking reaction of the model compound, so the structure of the catalytic viscosity reducer can be confirmed.

[0018] Preparation: In a three-necked flask, dissolve 18g of p-tolue...

Embodiment 2

[0021] Design: with embodiment 1.

[0022] Preparation: In a three-necked flask, dissolve 17g of p-toluenesulfonic acid in 50ml of water, heat to 50°C in a constant temperature water bath, slowly add 4g of copper oxide powder under stirring conditions, react at 80°C for 0.5h, and the reaction ends Afterwards, filter while it is hot, put the filtrate in an oven and bake at 60°C for 12 hours (drying), and obtain a heavy oil viscosity reducer (blue crystal) with a double structure of hydrogen donor and catalytic center. Industrial production can be scaled up with industrial-grade raw materials.

[0023] Application: The product of this example (heavy oil viscosity reducer with dual structure of hydrogen donor and catalytic center) is applied to extra heavy oil (viscosity at 50°C is 41000mPa·s) in Shengli Oilfield, and the catalytic viscosity reducer (this Example product), water and viscous oil are placed in autoclave, hydrothermal catalytic cracking reaction takes place at 200 ...

Embodiment 3

[0025] Design: with embodiment 1.

[0026] Preparation: In a three-necked flask, dissolve 19g of p-toluenesulfonic acid in 50ml of water, heat it to 50°C in a constant temperature water bath, slowly add 5g of copper oxide powder under stirring conditions, react at 90°C for 0.5h, and the reaction ends Afterwards, filter while it is hot, put the filtrate in an oven and dry it at 60°C for 10 hours (drying), and obtain a heavy oil viscosity reducer (blue crystal) with a double structure of a hydrogen donor and a catalytic center. Industrial production can be scaled up with industrial-grade raw materials.

[0027] Application: The product of this example (a heavy oil viscosity reducer with a dual structure of a hydrogen donor and a catalytic center) is applied to super heavy oil in Xinjiang Karamay Oilfield (viscosity is 85000mPa·s at 50°C), and the catalytic viscosity reducer ( The product of this example), water and viscous oil are placed in a high-pressure reactor, and a hydrot...

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Abstract

The invention relates to a preparation method of aquathermolysis catalysis viscosity reducer for thickened oil recovery, in particular to a preparation method of thickened oil viscosity reducer with a dual structure of hydrogen donor and catalytic center, which is characterized by comprising the following steps: (1) selecting the following raw materials in parts by weight: 17-19 parts of p-toluenesulfonic acid, 4-5 parts of cupric oxide powder and 40-60 parts of water; and (2) dissolving the p-toluenesulfonic acid in the water, heating to 40-60 DEG C, adding the cupric oxide powder, stirring for 0.5-1 hour at the temperature of 80-90 DEG C, filtering while hot, putting filtrate in an oven for drying at the temperature of 50-70 DEG C for 10-12 hours, and obtaining the thickened oil viscosity reducer with the dual structure of hydrogen donor and catalytic center. The viscosity reducer prepared by the method has favorable viscosity reducing effect at the temperature below 200 DEG C, and the preparation process is simple.

Description

technical field [0001] The invention relates to a preparation method of a hydrothermal cracking catalytic viscosity reducer used in heavy oil exploitation. Background technique [0002] Heavy oil is an important part of global petroleum resources, and has resource potential several times higher than conventional petroleum resources. Heavy oil accounts for more than 70% of the world's remaining petroleum resources. With the continuous development of the global economy, countries around the world are increasingly demanding oil. Considering the current situation of conventional crude 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 steam into the oil layer, add hydrothermal cracking catalytic viscosity reducer, use the oil layer as a natural reactor, and use ...

Claims

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Application Information

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IPC IPC(8): C09K8/58B01J23/72C10G11/04
Inventor 陈艳玲李健巢昆刘华超张县民
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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