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Process for preparing thick oil hydrothermally catalytic cracking viscosity reducer containing amphiphilic structure

A technology of thermal catalysis and viscosity reducing agent, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of ineffective on-site application, poor contact with crude oil, and high use temperature, and achieve wide use conditions, reduced viscosity, Efficient viscosity reduction effect

Inactive Publication Date: 2008-12-17
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a new technology for heavy oil recovery. The key to this technology is the development of hydrothermal catalytic cracking viscosity reducers. However, the few hydrothermal catalytic cracking viscosity reducers reported so far have the problem of high service temperature, and the general The shortcomings of poor adaptability and poor contact with crude oil make it difficult to be effective in field application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Use 20 grams of low-cost aromatic sulfonic acid and 1.8 grams of iron oxide powder (particle size: 80-200 mesh) to react at 100 ° C for 2 hours. After the reaction is completed, dissolve it with 20 grams of acetone and filter. The filtered solid is unreacted oxide powder. Iron powder, put the filtrate into an oven, and dry it at 50°C to obtain a brown viscous liquid, which is a heavy oil hydrothermal catalytic cracking viscosity reducer (iron sulfonate chelate) containing an amphiphilic structure. Industrial production can be scaled up.

[0015] Put the aromatic sulfonate iron chelate viscosity reducer, water and heavy oil in a high-pressure reactor, and a hydrothermal catalytic cracking reaction occurs at 150-200°C, wherein the viscosity reducer concentration is 0.08% based on the quality of the entire system -0.2%, add more than 25% water. After the reaction, the viscosity reduction rate can reach more than 80%, and part of the colloidal asphaltene is cracked into sa...

Embodiment 2

[0017] Use 20 grams of low-cost aromatic sulfonic acid and 1.2 grams of iron powder (80-200 mesh in particle size) to react at 100 ° C for 2 hours. After the reaction is completed, dissolve with 20 grams of acetone and filter. The filtered solid is unreacted iron powder , put the filtrate into an oven, and dry it at 50°C to obtain a brown viscous liquid, which is a heavy oil hydrothermal catalytic cracking viscosity reducer (iron sulfonate chelate) containing an amphiphilic structure. Industrial production can be scaled up.

[0018] Put the aromatic sulfonate iron chelate viscosity reducer, water and heavy oil in a high-pressure reactor, and a hydrothermal catalytic cracking reaction occurs at 150-200°C, wherein the viscosity reducer concentration is 0.08% based on the quality of the entire system -0.2%, add more than 25% water. After the reaction, the viscosity reduction rate can reach more than 80%, and part of the colloidal asphaltene is cracked into saturated hydrocarbons...

Embodiment 3

[0020] A preparation method of a heavy oil hydrothermal catalytic cracking viscosity reducer containing an amphiphilic structure, which comprises the following steps:

[0021] 1). Select raw materials: Arylsulfonic acid and iron oxide powder are selected in parts by weight of aromatic sulfonic acid and iron oxide powder: 19 parts of aromatic sulfonic acid and 1.8 parts of iron oxide powder;

[0022] 2). React aryl sulfonic acid and iron oxide powder (particle size: 80-200 mesh) at 80°C for 3 hours. After the reaction is completed, dissolve it with acetone. The amount of acetone added is the weight of aryl sulfonic acid: weight of acetone = 1: 0.9 ; Filtration, the filtered solid is unreacted iron oxide or iron powder, the filtrate is placed in an oven, and dried at 80°C to obtain a brown viscous liquid that is a heavy oil hydrothermal catalytic cracking viscosity reducer containing an amphiphilic structure.

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Abstract

The present invention relates to preparation process of hydrothermally catalytic cracking viscosity reducer containing amphiphilic structure for thick oil exploitation. The preparation process includes the following steps: 1. preparing material arylsulfonic acid in 19-21 weigh portions, and iron oxide powder in 1.8 or 1.2 weigh portions; and 2. reaction between arylsulfonic acid and iron oxide powder at 80-160 deg.c for 1-3 hr, dissolving the resultant with acetone in 0.9-1.3 times arylsulfonic acid weight, filtering and stoving the filtrate in a stove at 50-80 deg.c to obtain the brown ropy liquid viscosity reducer. The present invention has the features of low cost, high universality and good low temperature viscosity reducing effect.

Description

technical field [0001] The invention relates to a preparation method of a hydrothermal catalytic cracking viscosity reducer used in heavy oil exploitation. Background technique [0002] my country has relatively rich heavy oil resources. Due to the limitations of existing mining methods, many heavy oil resources are difficult to develop, especially ultra-super heavy oil resources are basically not used. So far, heavy oil recovery methods mainly include thermal recovery (combustion of oil reservoirs, electric heating, steam stimulation and steam flooding), biodegradation, physical recovery and chemical viscosity reduction. The chemical viscosity reduction method is to inject a chemical viscosity reducer into the heavy oil in the formation, and through the action of the chemical viscosity reducer, the viscosity of the crude oil can be reduced, and the fluidity can be enhanced to recover the heavy oil. It is a mining method with simple process, low mining cost and good effect....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58
Inventor 陈艳玲王元庆夏菲
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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