Nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery and preparation method thereof

A super-heavy oil and composite technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high quality of heavy oil, poor high temperature resistance, large amount of viscosity reducer, etc., and achieve environmental protection effect Good, good high temperature resistance, low viscosity and frictional resistance

Active Publication Date: 2013-09-25
GUNGHO CHARGE TIANJIN REFINED PETROLEUM TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The shortcoming that above-mentioned prior art exists is: 1) the thick oil viscosity reducing agent that adopts is the viscosity reducing agent of single performance, and its scope of application is narrow, generally only applicable to low-viscosity heavy oil; Heavy oil quality requirements are high; 3) Viscosity reducers are used in a large amount and the cost is high; 4) The resistance to mineral salts of viscosity reducers is generally less than 3000mg / L, and cannot be used when the concentration of calcium and magnesium ions in formation water is high

Method used

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  • Nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery and preparation method thereof
  • Nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery and preparation method thereof
  • Nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Petroleum sulfonate 6.0g, fatty alcohol polyoxyethylene ether phosphate 10.0g, isooctylphenol polyoxyethylene ether 8.0g, lignosulfonate 20.0g, sulfite 3.0g, monoethanolamine 3.0g Polymerize at 90°C in a mixer with a stirring device for 4 hours, then add 4.0g of modified nano-silica and mix for 1 hour, and finally add emulsifier TX-1010.0g, pull-off powder 6.0g, butadiene Add 8.0 g of dioctyl sodium di-sec-octyl sulfonate, 6.0 g of polyvinyl alcohol, add water to 100 g, and stir at room temperature for 1 hour to prepare a nano-composite high-temperature-resistant recovery aid for heavy oil and super heavy oil.

Embodiment 2

[0048] Petroleum sulfonate 6.0g, fatty alcohol polyoxyethylene ether phosphate 4.0g, polyethylene glycol octylphenyl ether 5.0g, lignosulfonate 10.0g, polyamine salt 4.0g, monoethanolamine 4.0g Polymerize in a mixer with a stirring device at 80°C for 6 hours, then add 4.0 g of modified nano-silica and mix for 1 hour, then add emulsifier AEO-98.0 g, pull-off powder 8.0 g, butadiene Di-sec-octyl enedioic acid sodium sulfonate 8.0g, polyethylene glycol 60006.0g, add water to 100g, stir at room temperature for 2 hours, and prepare heavy oil and super heavy oil using nano-composite high-temperature resistant recovery aids.

Embodiment 3

[0050] Put 5.0g of petroleum sulfonate, 7.0g of fatty alcohol polyoxyethylene ether phosphate ester salt, 10.0g of isooctylphenol polyoxyethylene ether, 21.0g of lignosulfonate, 3.0g of sulfate, and 3.0g of triethanolamine in Polymerize in a mixer with a stirring device for 3 hours at 95°C, then add 6.0 g of modified nano-silica and mix for 1.5 hours, and finally add emulsifier TX-10 10.0 g, Span-80 6.0 g, butene di Di-sec-octyl sodium sulfonate 10.0g, sorbitol 3.0g, add water to 100g, stir at room temperature for 1 hour, and prepare heavy oil and super heavy oil.

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Abstract

The invention discloses a nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery. The nano composite high-temperature-resistant extraction aid is prepared from 3-8 weight percent of modified nano-silica, 3-8 weight percent of petroleum sulfonate, 10-40 weight percent of a viscosity reducer, 5-15 weight percent of an emulsifier, 2-10 weight percent of a surface wetting agent, 2-10 weight percent of a penetrating agent, 5-10 weight percent of a high polymer modifier, 1-8 weight percent of a catalyst and the balance of water. The preparation method comprises the following steps: polymerizing the petroleum sulfonate, viscosity reducer, a promoting agent and the catalyst at the temperature of 60-150 DEG C for 2-6 hours according to a ratio, adding the modified nano inorganic aid, and uniformly mixing; and finally, adding the emulsifier, surface wetting agent, penetrating agent, high polymer modifier and water according to the ratio, and mixing for 1-2 hours. The nano composite high-temperature-resistant extraction aid for thickened oil and super-thickened oil recovery has high high-temperature resistance and excellent emulsification and salt resistance, the production efficiency can be greatly improved, and the recovery rate is reduced.

Description

technical field [0001] The invention relates to the field of petroleum enhanced oil recovery, in particular to a nanocomposite high-temperature resistant recovery aid for heavy oil and super heavy oil and a preparation method thereof. Background technique [0002] Due to the tight supply of crude oil worldwide, abundant heavy and super-heavy oils have attracted increasing attention. In the process of crude oil production, the crude oil in the oil layer seeps to the bottom of the well through the porous medium, and then is lifted to the ground through the lifting system. During the process of seepage of heavy oil and super heavy oil from the reservoir to the bottom of the well, due to the high content, high viscosity and slow flow of some heavy components such as colloid, asphaltene and paraffin contained in heavy oil and super heavy oil, it is easy to Adhering and accumulating on the surface of the near wellbore channel, resulting in a decrease in oil well production, high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58
CPCC09K8/584C09K8/588C09K2208/10
Inventor 杨印海
Owner GUNGHO CHARGE TIANJIN REFINED PETROLEUM TECH DEV
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