High-temperature resistant, hypersalinity resistant and gas condensate resistant foam scrubbing agent and preparation method thereof

A high-salinity, anti-condensate technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problem of not being able to meet high-temperature resistance, high salinity, anti-condensate, and foaming capabilities at the same time. It can improve the water-carrying capacity, good foam stability and strong foaming ability.

Active Publication Date: 2015-12-30
西安长庆化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foaming agents commonly used in gas wells are generally suitable for formations below 70°C, and their foam stability is poor. With the increase of ambient temperature, their foaming ability and stability will be greatly reduced. The foam generated by the discharge agent will disappear quickly, or even no foam
And it cannot meet the characteristics of high temperature resistance, high salinity resistance and condensate oil resistance at the same time

Method used

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  • High-temperature resistant, hypersalinity resistant and gas condensate resistant foam scrubbing agent and preparation method thereof
  • High-temperature resistant, hypersalinity resistant and gas condensate resistant foam scrubbing agent and preparation method thereof
  • High-temperature resistant, hypersalinity resistant and gas condensate resistant foam scrubbing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A foaming agent resistant to high temperature, high salinity and condensate oil. The foaming agent is composed of the following components by weight:

[0034] Anionic surfactant 30-50%;

[0035] Amphoteric surfactant 10-20%;

[0036] Fluorocarbon surfactant 1~2%;

[0037] Foam stabilizer 0.5~1.5%;

[0038] Triethanolamine 0.2~0.5%;

[0039] Ethylene glycol 0.2~0.5%;

[0040] Sodium salt 3~5%;

[0041] The rest is water.

[0042] A preparation method of a high-temperature-resistant, high-salinity-resistant and condensate-resistant foaming agent:

[0043] (1) Measure 30-50% of anionic surfactant, 10-20% of amphoteric surfactant, 1-2% of fluorocarbon surfactant, 0.5-1.5% of foam stabilizer, 0.2-0.5% triethanolamine, 0.2-0.5% ethylene glycol, and 3-5% sodium salt are used as raw materials for standby;

[0044] (2) Take the amount measured in step (1), add the anionic surfactant, amphoteric surfactant, fluorocarbon surfactant and sodium salt weighed in step (1) into ...

Embodiment 2

[0052] The foaming agent (code name HG-1) provided in this example is prepared according to the following raw material components:

[0053] (1) Take sodium alkylbenzene sulfonate with a weight ratio of 30, 20% cocophthaloaminopropyl betaine, 1% potassium perfluorohexyl sulfonate, 1.5% polyvinyl alcohol, and 0.3% Triethanolamine, the ethylene glycol of 0.3%, the sodium chloride of 3% is standby as raw material;

[0054] (2) Take the amount measured in step (1), add the sodium alkylbenzene sulfonate, cocophthalamidopropyl betaine, potassium perfluorohexyl sulfonate and sodium chloride weighed in step (1) respectively and stir Stir in the tank and heat to 30-50°C;

[0055] (3) Add the polyvinyl alcohol measured in step (1) into the mixing tank in step (2), and stir at a constant temperature until all the materials added to the mixing tank are dissolved;

[0056] (4) Take the triethanolamine, ethylene glycol and water measured in step (1) and add them to the mixing tank in step ...

Embodiment 3

[0059] The foaming agent (code name HG-2) provided in this example is prepared according to the following raw material components:

[0060] 1) Take 40% sodium alkyl sulfonate, 15% dilauryl amidopropyl amine oxide, 2% ethyl perfluoroalkylamide, 1% sodium lauryl sulfate, 0.5 % triethanolamine, 0.2 ethylene glycol, and 5% sodium sulfate are standby as raw materials;

[0061](2) Take the amount measured in step (1) and add the sodium alkylsulfonate, dilauryl amidopropyl amine oxide, ethyl perfluoroalkylamide and sodium sulfate weighed in step (1) into the mixing tank respectively Stir and heat to 30-50°C;

[0062] (3) Take the sodium lauryl sulfate measured in step (1) and add it to the mixing tank in step (2), and stir at a constant temperature until all the materials added to the mixing tank are dissolved;

[0063] (4) Take the triethanolamine, ethylene glycol and water measured in step (1) and add them to the mixing tank in step (3) in sequence, and stir at a constant tempera...

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PUM

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Abstract

The invention provides a high-temperature resistant, hypersalinity resistant and gas condensate resistant foam scrubbing agent and a preparation method thereof. The foam scrubbing agent is prepared from the following components in parts by weight: 30 to 50 percent of anionic surfactant, 10 to 2 percent of ampholytic surfactant, 1 to 2 percent of fluorocarbon surfactant, 0.5 to 1.5 percent of foam stabilizer, 0.2 to 0.5 percent of triethanolamine, 0.2 to 0.5 percent of glycol, 3 to 5 percent of sodium salt and the balance of water. The foam scrubbing agent has good water-carrying and foaming effects, can meet the process requirements of gas recovery by water drainage and has high-temperature resistance, hypersalinity resistance and gas condensate resistance.

Description

technical field [0001] The invention relates to a foaming agent for gas well development in the field of oil and gas fields, in particular to a foaming agent capable of resisting high temperature, high salinity and condensate oil and a preparation method thereof. Background technique [0002] Gas recovery in foam drainage is a drainage gas recovery technology developed rapidly at home and abroad in recent years. Its essence belongs to chemical drainage, and it is a new technology developed by utilizing the foaming properties of surfactants. The principle is to use the action of natural gas and the foaming agent dissolved in the well liquid to form a continuously rising foam column, carry out the liquid and the solid particles mixed in it from the well, and introduce some surfactants with special functions into the mineralized water at the bottom of the well With the help of the stirring of natural gas flow, it will fully contact with the bottom well fluid, and produce a larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 万华王婉田伟惠艳妮王妍琼窦淼赵燕红吕俊华姬文钰胡先科
Owner 西安长庆化工集团有限公司
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