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Preparation method of heavy oil hydrothermal viscosity-reducing nano-catalyst

A nano-catalyst, oil-water technology, applied in chemical instruments and methods, physical/chemical process catalysts, drilling compositions, etc., can solve the problems of difficult flow, difficulty in heavy oil exploitation, high viscosity of heavy oil, etc., and achieve low cost. , The hydrothermal cracking of heavy oil has the effect of high viscosity reduction and easy dispersion

Inactive Publication Date: 2019-04-19
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity and difficult flow of heavy oil, it has caused great difficulties in the exploitation of heavy oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of iron oleate

[0027] Put 4 parts of sodium oleate, 24 parts of absolute ethanol, 1 part of ferric chloride, 18 parts of distilled water, and 40 parts of n-hexane into a three-necked flask, and reflux the oil bath at 90°C for 4 hours. After the reaction, cool to room temperature, and use liquid separation Take the upper brown oily ferric oleate solution through the funnel.

[0028] (2) Preparation of nanocatalysts

[0029] First use 5 parts of AEO9, 50 parts of distilled water, 250 parts of cyclohexane, and 1 part of n-octanol to vigorously stir for 1 hour to prepare a microemulsion, and then add 4 parts of Na 2 The S solution was stirred for 0.5h, and finally 2 parts of brown oily ferric oleate solution were added dropwise under vigorous stirring.

[0030] (3) Result detection

[0031] Application The nano-catalyst, reservoir water and heavy oil in this example were placed in a self-made high-temperature and high-pressure reactor, and the viscosity...

Embodiment 2

[0033] (1) Preparation of cobalt oleate

[0034] Put 3 parts of sodium oleate, 18 parts of absolute ethanol, 1 part of cobalt chloride hexahydrate, 13.5 parts of distilled water, and 32 parts of methylcyclohexane into a three-necked flask, reflux the oil bath at 90°C for 4 hours, and cool to At room temperature, use a separatory funnel to take the upper pink oily cobalt oleate solution.

[0035] (2) Preparation of nanocatalysts

[0036] First use 5 parts of AEO9, 50 parts of distilled water, 250 parts of cyclohexane, and 1 part of n-octanol to vigorously stir for 1 h to prepare a microemulsion, and then add 2 parts of Na 2 The S solution was stirred for 0.5 h, and finally 1 part of pink oily cobalt oleate solution was added dropwise under vigorous stirring.

[0037] (3) Result detection

[0038] Application The catalyst of this example, reservoir water and heavy oil are placed in a self-made high-temperature and high-pressure reactor, and the viscosity reduction reaction is...

Embodiment 3

[0040] (1) Preparation of copper oleate

[0041] Put 3 parts of sodium oleate, 18 parts of absolute ethanol, 1 part of copper chloride dihydrate, 13.5 parts of distilled water, and 32 parts of methylcyclohexane into a three-necked flask, reflux the oil bath at 90°C for 4 hours, and cool to At room temperature, use a separatory funnel to take the upper blue oily copper oleate solution.

[0042] (2) Preparation of nanocatalysts

[0043] First use 5 parts of AEO9, 50 parts of distilled water, 250 parts of cyclohexane, and 1 part of n-octanol to vigorously stir for 1 h to prepare a microemulsion, and then add 2 parts of Na 2 The S solution was stirred for 0.5 h, and finally 1 part of blue oily liquid was added dropwise under vigorous stirring.

[0044] (3) Result detection

[0045] Application The catalyst of this example, reservoir water and heavy oil are placed in a self-made high-temperature and high-pressure reactor, and the viscosity reduction reaction is carried out at 20...

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Abstract

The invention belongs to the field of preparation of nano-catalysts, in particular relates to a preparation method of a hydrothermal viscosity-reducing nano-catalyst for heavy oil. The preparation method comprises the following steps: mixing sodium oleate, anhydrous ethanol, distilled water and n-hexane into a three-necked flask and then respectively adding ferric chloride, cobalt chloride hexahydrate or copper chloride dehydrate into the three-necked flask, refluxing at 90 DEG C for 4h, reacting and cooling to room temperature, obtaining the upper oily liquid by using a separatory funnel to respectively prepare brown red iron oleate and pink oleic acid cobalt or blue copper oleate solution; intensely mixing with AEO9, distilled water, methylcyclohexane and n-octanol to obtain a microemulsion, adding a Na2S solution and stirring, and finally intensely stirring while respectively dropwise adding brownish red iron oleate, pink oleic acid oleate or blue copper oleate until the solution isblack. The catalyst of the invention has nanoscale. The preparation process is simple; raw materials are easily available; and the viscosity can be remarkably reduced.

Description

technical field [0001] The invention belongs to the field of preparation of nano-catalysts, in particular to a preparation method of a nano-catalyst for hydrothermal viscosity reduction of heavy oil. Background technique [0002] With the increasing consumption of crude oil, the reserves of low-viscosity and easy-to-recover crude oil are decreasing day by day. my country's heavy oil reserves rank among the top in the world, so the effective development of heavy oil has practical significance in ensuring my country's energy security, improving resource utilization, and providing power for social development. However, due to the high viscosity and difficult flow of heavy oil, it has caused great difficulties in the exploitation of heavy oil. Existing mining technologies include: thermal recovery methods developed by utilizing the thermal sensitivity of heavy oil, such as burning oil layer method, steam thermal recovery method, etc.; applying power to heavy oil by placing subm...

Claims

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Application Information

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IPC IPC(8): B01J27/043B01J27/04C09K8/592
CPCC09K8/592B01J27/04B01J27/043B01J35/393B01J35/23
Inventor 王强丁保宏冯旭阳
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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