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A new recyclable wax remover and its preparation and recovery method

A recovery method and technology of wax remover, applied in the field of new wax remover and its preparation and recovery, can solve the problems of rising use cost and non-recyclability, and achieve the effects of reducing industrial cost, improving wax removal and preventing effect, and achieving remarkable effect.

Active Publication Date: 2021-01-12
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many types of chemical wax removers, which are generally divided into oil-based wax removers, water-based wax removers and emulsion-type wax removers. Ordinary wax removers have a common disadvantage that they are not recyclable, which increases the cost of use.

Method used

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  • A new recyclable wax remover and its preparation and recovery method
  • A new recyclable wax remover and its preparation and recovery method
  • A new recyclable wax remover and its preparation and recovery method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] The main agent is dimethyl ether and water, the surfactant is sodium dodecylbenzenesulfonate and SP80, and the mutual solvent is ethylene glycol monobutyl ether. The proportioning ratio is as follows (by mass percentage):

[0031]

[0032]

[0033] Preparation method: add 300g of water to the reaction kettle (10), start stirring, then add 10g of sodium dodecylbenzenesulfonate, 180g of ethanol, and 10g of SP80 successively under stirring, and then pass the needle valve (4) to the reaction kettle ( 10) Pressurize the inside to be higher than 0.5Mpa, then add 500g of dimethyl ether into the reaction kettle (10) through the storage tank (5) through the needle valve (11), and continue stirring evenly to obtain the product.

[0034] After testing, at 45°C, the wax melting rate of this product to No. 56 paraffin wax is 0.0487g / min, and the recovery rate of a new type of recyclable wax remover obtained through the recovery operation reaches 83%.

example 2

[0036] The main agent is dimethyl ether and water, the surfactant is isoamyl alcohol and cetyltrimethylammonium chloride, and the mutual solvent is ethanol, and its proportioning ratio is as follows (by mass percentage):

[0037]

[0038] Preparation method: add 300 g of water into the reaction kettle (10), start stirring, and then add 10 g of cetyltrimethylammonium chloride, 80 g of ethanol, and 10 g of isoamyl alcohol in turn under stirring, and then pass through the needle valve (4) Pressurize the reaction kettle (10) to higher than 0.5Mpa, then add 600g of dimethyl ether into the reaction kettle (10) through the storage tank (5) through the needle valve (11), and continue to stir evenly to obtain the product.

[0039] After testing, at 45°C, the wax-melting rate of this product to No. 56 paraffin wax is 0.0437g / min, and the recovery rate of a new recyclable wax remover obtained through the recovery operation reaches 88%.

example 3

[0041] The main agent is dimethyl ether and water, the surfactant is cetyltrimethylammonium chloride and SP80, the mutual solvent is ethylene glycol monobutyl ether, and its proportioning ratio is as follows (by mass percentage):

[0042]

[0043]

[0044] Preparation method: add 220g of water to the reaction kettle (10), start stirring, and then add 10g of cetyltrimethylammonium chloride, 60g of ethanol, and 10g of SP80 in turn under stirring, and then pass the needle valve (4) to the reaction Pressurize the kettle (10) to higher than 0.5Mpa, then add 700g of dimethyl ether into the reaction kettle (10) through the storage tank (5) through the needle valve (11), and continue to stir evenly to obtain the product.

[0045] After testing, at 45°C, the wax melting rate of this product to No. 56 paraffin wax is 0.034g / min, and the recovery rate of a new type of recyclable wax remover obtained through the recovery operation reaches 90%. (The speed above is 40r / min)

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Abstract

The invention relates to a chemical product used in an oil field, and provides a novel paraffin remover having recycling ability and a preparation and a recycling method thereof. The novel paraffin remover comprises the following components by mass percentage: 10 to 90% of a main component dimethyl ether, 6 to 10% of a mutual solvent, 1-4% of a surfactant, and the balance is water. The invention also provides the preparation and the recycling method thereof. The paraffin remover has the advantages that the main component and water are mixed and dissolved in any ratio when the mutual solvent content is 6% or more, and complex formulation is carried out according to the requirements; the paraffin remover has the characteristics of recycling and reusing; the dissolving performance is excellent; the paraffin remover is a benzene-free organic solvent, which is green and non-toxic; the paraffin remover has certain paraffin inhibition effect while paraffin removing, and is suitable for oil wells with different salinity, temperatures and oil sample density; and the product is neutral and does not corrode oil pipes.

Description

technical field [0001] The invention relates to a chemical product used in oil fields, and provides a novel wax remover with recyclability and a preparation and recovery method thereof. Background technique [0002] There are three major problems in the oil extraction process: sanding, scaling, and wax formation, which bring a lot of trouble to the extraction and construction of crude oil. During the production process, the waxy crude oil rises along the tubing. With the change of environmental conditions such as temperature, pressure, flow rate and water content, the paraffin molecules in the waxy crude oil will crystallize out due to the destruction of the dissolution balance, and deposit concentratedly on the inner wall of the tubing. superior. The deposition of paraffin on the inner wall of the oil pipe will inevitably reduce the oil flow channel, increase the flow resistance, reduce the production capacity of the oil well, or even stop production. In order to solve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 杨志刘弘博康露林坤
Owner SOUTHWEST PETROLEUM UNIV
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