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A kind of preparation method of temperature-resistant and salt-resistant foam discharge agent

A technology of temperature resistance, salt resistance and foam discharge agent, which is applied in the field of oil and gas field chemistry, can solve the problems of poor foaming and foam stabilization performance of foam discharge agent, and achieve the effects of large foam volume, easy control and cost reduction.

Active Publication Date: 2022-04-22
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of poor foaming and stabilizing properties of the foaming agent in the prior art with the continuous increase of temperature and salinity, the invention provides a preparation method of a temperature-resistant and salt-resistant foaming agent

Method used

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  • A kind of preparation method of temperature-resistant and salt-resistant foam discharge agent
  • A kind of preparation method of temperature-resistant and salt-resistant foam discharge agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add fatty acid methyl ester sodium sulfonate (MES) into the three-necked flask, heat and melt, blow in nitrogen to exhaust oxygen, and then add N,N-dimethyl-1,3-propane dropwise according to the mass ratio of 1:3 Diamine, then condensed and refluxed, stirred evenly at a speed of 1800r / min, and reacted at 180°C for 18 hours to obtain a solid; the resulting solid was recrystallized with a 10% sodium chloride solution, filtered, and dried. That is, the foam discharge agent of Example 1 is prepared.

Embodiment 2

[0019] Add fatty acid methyl ester sodium sulfonate (MES) into the three-necked flask, heat and melt, blow in nitrogen to exhaust oxygen, and then add N,N-dimethyl-1,3-propane dropwise according to the mass ratio of 1:3.5 Diamine, then condensed and refluxed, stirred evenly at a speed of 1800r / min, and reacted at 180°C for 18 hours to obtain a solid; the resulting solid was recrystallized with a 10% sodium chloride solution, filtered, and dried. That is, the foam discharge agent of Example 2 is prepared.

Embodiment 3

[0021] Add fatty acid methyl ester sodium sulfonate (MES) into the three-necked flask, heat and melt, blow in nitrogen to exhaust oxygen, and then add N,N-dimethyl-1,3-propane dropwise according to the mass ratio of 1:4 Diamine, then condensed and refluxed, stirred evenly at a speed of 1800r / min, and reacted at 180°C for 18 hours to obtain a solid; the resulting solid was recrystallized with a 10% sodium chloride solution, filtered, and dried. That is, the foam discharge agent of Example 3 is prepared.

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Abstract

The invention discloses a preparation method of a temperature-resistant and salt-resistant foam discharge agent, which comprises the following steps: adding sodium fatty acid methyl ester sulfonate into a three-necked flask, heating and melting; introducing nitrogen gas to discharge oxygen, and then adding N,N-2 Methyl-1,3-propylenediamine; then condensed and refluxed, stirred evenly and reacted to obtain a solid; the obtained solid was recrystallized with sodium chloride solution, filtered, and dried to obtain the foam discharge agent. The synthetic foam release agent of the present invention has low raw material price, convenient source, simple synthesis operation, easy control, and high yield. Compared with the conventional foam release agent, the dosage is less, the foaming foam is rapid, the foaming volume is large, the foam is delicate and The bubble stabilization time is long, which saves resources and reduces costs.

Description

technical field [0001] The invention relates to a preparation method of a temperature-resistant and salt-resistant foam drainage agent, which belongs to the field of oil and gas field chemistry. Background technique [0002] During the production process of a gas well, the pressure of the gas reservoir and the flow rate of natural gas gradually decrease, and the formation water or hydrocarbon condensate in the gas reservoir often flows into the bottom of the well. When the production capacity of the gas well is low and the liquid production rate is large, the fluid velocity in the wellbore is low, so that the produced liquid cannot be completely carried out of the wellbore, and thus stays in the wellbore to form hydrops. The liquid column pressure generated by the effusion will offset part of the formation pressure. If this situation continues, the liquid column pressure will even reach equilibrium with the formation pressure, which will cause additional hydrostatic back pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584C09K8/60
CPCC09K8/584C09K8/602
Inventor 郑存川张太亮张旭李朝晖袁磊
Owner SOUTHWEST PETROLEUM UNIV
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