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Oil-soluble condensate oil emulsion breaker and preparation method thereof

A technology of demulsifier and condensate oil, which is applied in the fields of chemical dehydration/demulsification, petroleum industry, treatment of hydrocarbon oil, etc., which can solve the problem of low recovery rate of condensate oil, unsatisfactory demulsification effect, and small output of condensate oil. and other problems, to achieve the effects of high demulsification efficiency, high demulsification rate and fast demulsification speed

Active Publication Date: 2015-04-08
成都华阳兴华化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the demulsifiers currently used are all imported from the existing crude oil demulsifiers, which have the problems of poor adaptability, unsatisfactory demulsification effect, low recovery rate of condensate oil, and no demulsification especially in winter
The output of condensate oil is very small relative to crude oil. The research and development of demulsifiers at home and abroad are all focused on crude oil demulsifiers. There are no demulsifier products and related reports for condensate oil.

Method used

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  • Oil-soluble condensate oil emulsion breaker and preparation method thereof
  • Oil-soluble condensate oil emulsion breaker and preparation method thereof
  • Oil-soluble condensate oil emulsion breaker and preparation method thereof

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preparation example Construction

[0044] The preparation method of above-mentioned oil-soluble condensate demulsifier is as follows:

[0045] Add the cross-linked block polyether demulsifier, comb-type polysiloxane demulsifier, and betaine-type fluorocarbon surfactant into the reaction kettle, and add the solvent at the same time, then raise the temperature to 40°C while stirring, and cool down after fully mixing Let it cool down to room temperature to obtain an oil-soluble condensate oil demulsifier.

[0046] Use of the oil-soluble condensate oil demulsifier of the present invention: when using the oil-soluble condensate oil demulsifier of the present invention, the amount of addition depends on the amount of foam drainage agent, and the amount of addition is generally 0.2-0.6% of the liquid production. Its application effect is mainly determined by measuring the recovery rate of condensate oil.

Embodiment 1

[0048] When the foam drainage agent content≤0.3%, the condensate oil demulsifier of the present invention consists of the following components by weight percentage:

[0049] Scheme 1: 10% cross-linked block polyether demulsifier, 8% comb-type polysiloxane demulsifier, 0.05% betaine-type fluorocarbon surfactant, and 81.95% solvent.

[0050] Scheme 2: 11% cross-linked block polyether demulsifier, 7.5% comb polysiloxane demulsifier, 0.1% betaine fluorocarbon surfactant, and 81.4% solvent.

[0051] Scheme 3: 15% cross-linked block polyether demulsifier, 5% comb polysiloxane demulsifier, 0.08% betaine fluorocarbon surfactant, and 79.92% solvent.

[0052] Scheme 4: 13% crosslinked block polyether demulsifier, 6% comb polysiloxane demulsifier, 0.065% betaine fluorocarbon surfactant, and 80.935% solvent.

[0053] Scheme 5: 14% cross-linked block polyether demulsifier, 7% comb polysiloxane demulsifier, 0.09% betaine fluorocarbon surfactant, and 78.91% solvent.

[0054] Scheme 6: 12% ...

Embodiment 2

[0060] When the foam drainage agent content is 0.3-0.5%, the oil-soluble condensate oil demulsifier consists of the following components by weight percentage:

[0061] Option 1: 15% crosslinked block polyether demulsifier, 8% comb polysiloxane demulsifier, 0.1% betaine fluorocarbon surfactant, and 76.9% solvent.

[0062] Scheme 2: 15.5% crosslinked block polyether demulsifier, 9% comb polysiloxane demulsifier, 0.12% betaine fluorocarbon surfactant, and 75.38% solvent.

[0063] Scheme 3: 19.5% cross-linked block polyether demulsifier, 11% comb polysiloxane demulsifier, 0.14% betaine fluorocarbon surfactant, and 69.36% solvent.

[0064] Scheme 4: 18% cross-linked block polyether demulsifier, 10% comb polysiloxane demulsifier, 0.135% betaine fluorocarbon surfactant, and 71.865% solvent.

[0065] Scheme 5: 16% cross-linked block polyether demulsifier, 8.5% comb polysiloxane demulsifier, 0.15% betaine fluorocarbon surfactant, and 75.35% solvent.

[0066] Scheme 6: 19% cross-linke...

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Abstract

The invention discloses an oil-soluble condensate oil emulsion breaker and a preparation method thereof. The oil-soluble condensate oil emulsion breaker is a compound formed by adding a cross-linking type block polyether emulsion breaker, a comb-type polysiloxane emulsion breaker and a glycine betaine type fluorocarbon surfactant to a solvent, and the compound comprises the following components in percentage by weight: 10%-25% of the cross-linking type block polyether emulsion breaker, 5%-15% of the comb-type polysiloxane emulsion breaker, 0.05%-0.2% of the glycine betaine type fluorocarbon surfactant and the balance of the solvent. The oil-soluble condensate oil emulsion breaker disclosed by the invention is suitable for the recovery of condensate oil contained in a produced fluid of a natural gas well foaming drainage gas recovery process, can achieve an ideal emulsion breaking effect of an condensate oil emulsion formed from different foaming drainage agents, has the characteristics of high emulsion breaking speed and high emulsion breaking efficiency at normal temperature, and can ensure the high-efficiency recovery of the condensate oil of a gas field.

Description

technical field [0001] The invention specifically relates to an oil-soluble condensate oil demulsifier and a preparation method thereof. Background technique [0002] Foam drainage and gas recovery technology is one of the main methods of drainage and gas recovery. It injects foam drainage agent from the wellhead of a gas well with insufficient liquid-carrying capacity to the bottom of the well, and generates a large amount of low-density water-containing foam with the help of the gas flow. The bottom of the well is carried to the ground to achieve the purpose of clearing the bottom of the well. At the same time, when the gas well contains condensate oil, after the bubble flow rises to the ground with the natural gas to defoam, a stable W / O condensate oil emulsion will be formed due to the emulsification of the foam drainage agent, and a demulsifier needs to be added to recover the condensate oil. The on-site demulsification of condensate oil emulsion in domestic gas field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
CPCC10G33/04C10G2300/1033
Inventor 黎文亮郭柏序曹焕尧李祖友骆彬
Owner 成都华阳兴华化工有限公司
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