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Fluorine-silicon contd. linkage polyether demulsification agent and its prepn. method

A technology of silicon cross-linked polyether demulsifier and cross-linking agent, which is applied in the fields of hydrocarbon oil dehydration/demulsification, petroleum industry, etc., can solve the problems of high oil content, slow dehydration speed, large dosage and other problems in dehydration, and achieve dehydration The effect of low oil content, low dehydration temperature and fast dehydration speed

Inactive Publication Date: 2006-09-13
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the development and application of crude oil demulsifiers in my country are still at the stage of non-ionic surfactants for block polymerization of olefin oxides. Although this type of demulsifier can meet the needs of general crude oil dehydration, the disadvantage is that the dosage is large (80-200ppm), The dehydration temperature requirement is high (greater than 40°C), the dehydration speed is relatively slow (generally greater than 30min), and the oil content of the dehydrated water is high, which cannot meet the development needs of the petroleum industry

Method used

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  • Fluorine-silicon contd. linkage polyether demulsification agent and its prepn. method
  • Fluorine-silicon contd. linkage polyether demulsification agent and its prepn. method
  • Fluorine-silicon contd. linkage polyether demulsification agent and its prepn. method

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Experimental program
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Effect test

Embodiment 1

[0029] A fluorine-containing silicon cross-linked polyether demulsifier, the raw material components and weight percentages of the demulsifier are as follows: (A) 1%, (B) 98%, (E) cross-linking agent 1%; (A) is a fluorine-containing silicon hydroxyl compound, and its structural formula is as follows:

[0030]

[0031] In the formula: n is 3, m is 4, k is 3~9, R 1 stands for C 1 ~C 8 The hydrocarbon group, the hydroxyl content (%) is 5.

[0032] The (B) is a block polyether formed by polymerizing an active hydrogen or active hydroxyl-containing alcohol, acid, phenol, amine or phenol-containing resin with an oxyethylenelating agent and an oxypropylenelating agent, and its structural formula is as follows:

[0033] R-O-(CH 2 CH 2 O) n h

[0034] The (E) cross-linking agent is toluene diisocyanate (TDI).

[0035] The preparation method of the above-mentioned fluorine-containing silicon cross-linked polyether demulsifier, the demulsifier is composed o...

Embodiment 2

[0038] A fluorine-containing silicon cross-linked polyether demulsifier, the raw material components and weight percentages of the demulsifier are as follows: (A) 10%, (B) 80%, (E) cross-linking agent 10%; (A) is a fluorine-containing silicon hydroxyl compound, and its structural formula is as follows:

[0039]

[0040] In the formula: n is 5, m is 6, k is 7-9, R 1 stands for C 1 ~C 8 The hydrocarbon group, the hydroxyl content (%) is 6.

[0041] The (B) is a block polyether formed by polymerizing an active hydrogen or active hydroxyl-containing alcohol, acid, phenol, amine or phenol-containing resin with an oxyethylenelating agent and an oxypropylenelating agent, and its structural formula is as follows:

[0042]

[0043] The (E) cross-linking agent is polyalkylene polyisocyanate (PAPI).

[0044] The preparation method of the above-mentioned fluorine-containing silicon cross-linked polyether demulsifier and the preparation method of the block polyether (B) and

[0...

Embodiment 3

[0047] A fluorine-containing silicon cross-linked polyether demulsifier, the raw material components and weight percentages of the demulsifier are as follows: (A) 15%, (B) 70%, (E) cross-linking agent 15%; (A) is a fluorine-containing silicon hydroxyl compound, and its structural formula is as follows:

[0048]

[0049] In the formula: n is 8, m is 12, k is 12-15, R 1 stands for C 1 ~C 8 The hydrocarbon group, the hydroxyl content (%) is 6.

[0050] The (B) is a block polyether formed by polymerizing an active hydrogen or active hydroxyl-containing alcohol, acid, phenol, amine or phenol-containing resin with an oxyethylenelating agent and an oxypropylenelating agent, and its structural formula is as follows:

[0051]

[0052] The (E) cross-linking agent is diphenylmethane-4,4'-diisocyanate (MDI).

[0053] The preparation method of the above-mentioned fluorine-containing silicon cross-linked polyether demulsifier and the preparation method of the block polyether (B) a...

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Abstract

This invention relates to fluorin contain silicon interlinkage polyether emulsion breaker and its preparation method. The breaker made up by hydroxy compounds contains fluorosilicic (A)and one kind of alcohol, acid, hydroxybenzene, amine that contains active hydrogen or active hydroxy group or resin contains hydroxybenzene and oxygen ethylene agent and oxygen propylene agent, they conglomerate block polyether (B). There conglomeration is act under function of interlinkage agent (E) toluene disocynate or multi alkylene polyisocyanate or diphenyl methane-4,4- diisocyanate. The agent material components and their weight percentage content as following fluorosilicic 1-15%, (B) 70-98%, (E) interlinkage agent 1-15%. Comparing to existing technique, the dosage is few, desiccation temperature is low, desiccation velocity is fast, oil contain ratio of emerged water is low, it is a high efficiency and quick crude oil demulsifying agent.

Description

technical field [0001] The invention relates to a demulsifier used for oilfield exploitation of crude oil, in particular to a fluorine-containing silicon cross-linked polyether demulsifier and a preparation method thereof. Background technique [0002] In the process of oil exploitation, with the wide application of new technologies such as water injection oil recovery, heavy oil thermal recovery, alkaline water flooding, surfactant oil flooding, polymer flooding, etc., and the aging of some oil wells themselves, the colloids in crude oil The emulsification of substances, asphalt, naphthenic acid, fatty acid and salt, crystalline paraffin and various surface-active substances introduced artificially, the crude oil produced is mostly in the state of emulsion, and the water content continues to rise. The water-in-oil (W / O) emulsion in the primary oil recovery stage gradually transforms into the oil-in-water (O / W) emulsion in the late stage of secondary oil recovery and tertiar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/00C08G65/48
Inventor 肖稳发
Owner SHANGHAI UNIV OF ENG SCI
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