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Modified hyperbranched polyamidoamine polymer and preparation method thereof

A technology of polyamidoamine polymer, which is applied in the field of hyperbranched polyamidoamine polymer demulsifiers, can solve the problems of short demulsification time and poor demulsification efficiency, and achieve improved demulsification efficiency and high oil removal efficiency Effect

Inactive Publication Date: 2020-04-17
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Crude oil is mainly extracted in the form of emulsion, mainly including oil-in-water emulsion and water-in-oil emulsion. With the exploitation of various heterogeneous oil reservoirs and the comprehensive application of various extraction technologies, most crude oil The oil-in-water emulsion is produced. For the oil-in-water emulsion with high viscosity of the produced fluid crude oil, the demulsification efficiency of the hyperbranched polyamide amine demulsifier (h-PAMAM) is poor, and a new demulsifier is developed to solve the problem. The emulsion with high viscosity of crude oil and short breaking time is imminent

Method used

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  • Modified hyperbranched polyamidoamine polymer and preparation method thereof

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Effect test

Embodiment 1

[0016] Take 50g of hyperbranched polyamidoamine polymer and 0.645g of KOH into the reaction kettle, turn on the stirring and temperature switch, control the temperature to 110°C, and the pressure to 0.45MPa, take 55g of ethylene oxide dropwise into the reaction system, drop Complete reaction 1h. Then take 110g of propylene oxide dropwise into the reaction system, and react for 3 hours after the drop. After the reaction, degas to remove unreacted epoxy compounds and low-boiling small molecular compounds. The liquid is M-PAMAM, and its number-average molecular weight distribution is 15,000 after testing.

Embodiment 2

[0018] Take 50g hyperbranched polyamidoamine polymer and 2.25g KOH into the reaction kettle, turn on the stirring and temperature switch, control the temperature to 120°C, and the pressure to 0.45MPa, take 200g of ethylene oxide dropwise into the reaction system, drop Complete reaction 3h. Subsequently; 200g propylene oxide was dripped into the reaction system dropwise, and the reaction was completed for 3 hours. After the reaction, degassed to remove unreacted epoxy compounds and low-boiling small molecule compounds. The viscous liquid is M-PAMAM, which will be detected, and its number average molecular weight distribution is 30,000.

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Abstract

The invention discloses a modified hyperbranched polyamidoamine polymer. The polymer is prepared by taking a hyperbranched polyamidoamine polymer as an initiator and grafting ethylene oxide and propylene oxide in different proportions under the action of a catalyst; the modified hyperbranched polyamidoamine polymer is a red brown viscous liquid, and the number-average molecular weight distributionis 10000-30000. The modified hyperbranched polymer has relatively high hydrophilic-lipophilic balance value and interfacial activity, not only has a good demulsification effect on oil-in-water emulsion with high viscosity of crude oil of produced liquid, but also accelerates the breaking speed of a liquid film, so that the breaking, coalescence and oil-water separation speeds of oil drops are further accelerated.

Description

technical field [0001] The invention belongs to the field of oilfield chemicals, in particular to a hyperbranched polyamidoamine polymer demulsifier. Background technique [0002] As a branch of the fourth-generation polymer dendritic branched polymer, hyperbranched polymer has attracted widespread attention from scientists due to its convenient synthesis method and unique structure, and has quickly become a hot spot in the field of polymer research. lead to new heights. Compared with traditional linear polymers, dendritic branched polymers have a large number of modifiable terminal functional groups and unique physical and chemical properties such as good rheology, low viscosity, and excellent solubility. Therefore, it has been widely concerned and applied in functional materials, biomedicine, nanocrystals, catalysts, petrochemicals, etc., and has achieved good results. [0003] Hyperbranched poly(amido amine), h-PAMAM (hyperbranched poly(amido amine), h-PAMAM) is a gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C10G33/04
CPCC08G73/028C10G33/04
Inventor 张丽锋滕厚开赵新星陈翠婷张迪彦姚光源周立山
Owner CNOOC TIANJIN CHEM RES & DESIGN INST