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Natural gas well foam draining extraction emulsion demulsifying agent

A technology for foam drainage and emulsification, which is used in chemical dehydration/demulsification, immiscible liquid separation, petroleum industry, etc. Clear interface

Inactive Publication Date: 2015-04-08
DESHI ENERGY TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gas fields are often discarded or treated as sewage, which not only wastes resources but also increases the pressure on environmental protection

Method used

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  • Natural gas well foam draining extraction emulsion demulsifying agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Pump 120kg of 200# solvent oil, 100kg of ethanol and 148.5kg of diethanolamine into the 2M 3 In the reaction kettle, turn on the stirring device, add 57.6 kg of linear dodecylbenzenesulfonic acid, heat to 50 ° C, stir and react for 0.5 hours, then add 541.5 kg of water, and sequentially add 0.8 kg of citric acid, 75.6 kg of sodium sulfate and 100 kg of block polyether 6020 and 56 kg of block polyether 1121 were stirred and reacted at 50°C for 1 hour, and cooled out of the kettle to obtain PDS01, a light yellow viscous foam drainage demulsifier product.

Embodiment 2

[0047] Pump 120kg of 200# solvent oil, 100kg of methanol and 162.6kg of triethanolamine into the 2M 3 In the reaction kettle, turn on the stirring device, add 68.2 kg of linear tetradecylbenzenesulfonic acid, heat to 50°C, stir and react for 0.5 hours, then add 520.3 kg of water, and sequentially add 0.9 kg of citric acid and 72.0 kg of sodium chloride With 100 kg of block polyether 6030 and 56 kg of block polyether 1121, continue to stir and react at 50 ° C for 1 hour, and cool it out of the kettle to obtain a light yellow viscous foam drainage demulsifier product PDS02.

Embodiment 3

[0049] Pump 120kg of 200# solvent oil, 100kg of methanol and 151.2kg of triethylamine into the 2M 3 In the reaction kettle, turn on the stirring device, add 72.5 kg of linear hexadecylbenzenesulfonic acid, heat to 50 ° C, stir and react for 0.5 hours, then add 530.4 kg of water, and then add 0.9 kg of citric acid, 70.0 kg of potassium sulfate and 100 kg of block polyether 6101 and 55 kg of block polyether 1531 were stirred and reacted at 50°C for 1 hour, and cooled out of the kettle to obtain PDS03, a light brown viscous foam drainage demulsifier product.

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Abstract

The invention provides a natural gas well foam draining extraction emulsion demulsifying agent and a preparation method thereof. The foam draining demulsifying agent comprises the following components: functional block polyether, alkyl benzene sulfonic acid, citric acid, organic amine, inorganic salts and other aids. According to the foam draining demulsifying agent provided by the invention, bean curd jelly-shaped gas well foam draining water containing lots of gas condensate can be effectively subjected to oil-water separation, the long-standing knotty problem that the complex foam draining emulsion cannot be demulsified by the traditional demulsifying agent is solved, the recovery rate of the gas condensate is improved, the separated water can be clear, and the pollution of the discharged sewage on the environment is reduced.

Description

technical field [0001] The invention belongs to the field of natural gas production liquid treatment, and relates to a natural gas foam drainage production emulsion demulsifier and a preparation method thereof. Background technique [0002] At present, the foam drainage gas recovery process is still one of the most important methods for natural gas well production. Foam drainage gas recovery technology has been widely used in gas recovery production because of its advantages of simple equipment, easy construction, quick effect, low cost, and no influence on gas well production. [0003] At the same time, the associated condensate oil in the process of oil and gas extraction forms a production emulsion with complex composition and serious emulsification under the treatment of bubble drainage process. This emulsion containing condensate oil is very difficult to handle, and the formed very stubborn The emulsion presents a "tofu brain" shape. Gas fields are often discarded or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04B01D17/05
CPCC10G33/04B01D17/04C10G2300/1033
Inventor 崔仕章吴江勇姜晓明谷之辉杨其凯
Owner DESHI ENERGY TECH GRP CO LTD
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