Preparation method of low-temperature demulsifier and low-temperature demulsifier prepared by means of method

A technology of polyether demulsifier and phenolic aldehyde block, which is used in chemical dehydration/demulsification, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of rising oil content in water phase and increasing difficulty of demulsification

Inactive Publication Date: 2017-05-24
滨州市丰泰技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of increased difficulty in demulsification of production fluid at low temperature and increase

Method used

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  • Preparation method of low-temperature demulsifier and low-temperature demulsifier prepared by means of method
  • Preparation method of low-temperature demulsifier and low-temperature demulsifier prepared by means of method
  • Preparation method of low-temperature demulsifier and low-temperature demulsifier prepared by means of method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Preparation of phenamine-aldehyde block polymer: Add 30 g of the reaction mixture of bisphenol A and diethylenetriamine into a four-necked bottle, wherein the weight ratio of bisphenol A and diethylenetriamine is 1:3.7, and start stirring Heat up, when the temperature is 95-100°C, stir for 10 minutes, then, when cooled to 35°C, use a constant pressure dropping funnel to drop the weight of the reaction mixture of bisphenol A and diethylenetriamine at a rate of 1 drop / second 24%, that is, 20g, formaldehyde solution (36% (W / W)), where the weight ratio of 24% is calculated according to the amount of formaldehyde, after the dropwise addition, it needs to be kept warm for 30 minutes. Then add 1 / 2 xylene of the total amount of the material, heat up and reflux for 2 hours, then distill the xylene out to obtain a reddish-brown viscous liquid, which is a new type of phenamine-aldehyde resin.

[0032] 2) Then drop into the stainless steel reaction kettle with the phenamine-alde...

experiment Embodiment 1

[0034] Experimental Example 1: Measurement of Dehydration Rate

[0035] Pour 80ml of prepared crude oil emulsion (from Shengli Oilfield) into a 100ml stoppered measuring cylinder, preheat it for 15min, so that the liquid level of the stoppered measuring cylinder is not lower than the water bath level, when the emulsion in the stoppered measuring cylinder When the temperature reaches the general dehydration temperature (55°C or 60°C), continue to preheat for 30 minutes, and then add the products with better application effects in the current market: the block polymer with alcohol as the initiator produced by Binhua Group Ether TA-1031, SP169, block polyether AP116 and AE9901 produced by Shengli Chemical Group with amines as the initiator, and the demulsifier prepared according to Example 1. After covering the lid, fully shake it up and down by hand for 5 minutes , loosen the lid to release the air inside, put the lid on again, place it on a horizontal shaker, shake at the maxim...

experiment Embodiment 2

[0044] Experimental Example 2: Measurement of Low Temperature Dehydration Rate

[0045] Except that the dehydration temperature was set at 40 to 42° C., the dehydration rate was measured in the same manner as in Experimental Example 1, and the results are listed in Table 2 below.

[0046] Table 2 Demulsifier low temperature dehydration rate test results

[0047]

[0048]It can be seen from Table 2 that although the demulsifier prepared according to Example 1 of the present invention has little difference in the demulsification effect of TA-1031 and AP116 at room temperature, it is much better than TA-1031 and AP116 at low temperature , so it is more suitable for crude oil demulsification under low temperature conditions.

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Abstract

The invention discloses a preparation method of a phenol amine aldehyde block polyether low-temperature demulsifier and the low-temperature demulsifier prepared by means of the method. The method comprises the following steps: firstly performing condensation polymerization on a phenol matter, an amine matter and an aldehyde matter to prepare phenol amine aldehyde resin; and then performing a reaction with an epoxy compound to obtain final product. The demulsifier prepared by the preparation method disclosed by the invention has the advantages of being good in alkaline solubility, good in cleaning effect, free of irritant smells, convenient for field use and the like. The most applicable temperature is 45 DEG C, but the demulsifier still has a relatively good effect when the temperature is low to 41 DEG C. The demulsifier has an excellent demulsifying effect, has a good effect on the condition that the demulsifying difficulty of a low-temperature produced liquid of crude oil in a superficial layer is great and the oil content of the demulsified aqueous phase is great, and is suitable for the condition that the demulsifying difficulty of the produced liquid at the low temperature is great and the oil content of the demulsified aqueous phase is great.

Description

technical field [0001] The invention relates to the field of chemical reagent synthesis, in particular to a low-temperature demulsifier for phenolic aldehyde block polyether and a preparation method thereof. Background technique [0002] With the continuous improvement of crude oil extraction technology and the continuous progress of oilfield exploitation, the average water content of crude oil has reached more than 90%, which brings great difficulties to the extraction, processing and transportation of crude oil. The results of chemical demulsification are obvious and convenient, and chemical demulsification mainly uses surfactants such as demulsifiers, which makes the requirements for demulsifiers more stringent. Crude oil has high water and salt content, and crude oil is rich in various asphaltenes, colloids and other substances, which make the original composition more complicated and greatly increase the difficulty of demulsification. In the initial stage of oil produc...

Claims

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Application Information

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IPC IPC(8): C08G65/26C08G65/28C08G14/073C08G14/12C10G33/04
CPCC08G14/06C08G14/12C08G65/2609C08G65/2624C10G33/04C10G2300/1033
Inventor 高泉李敏邹新华陈伟周东新杨建峰顾增华
Owner 滨州市丰泰技术开发有限公司
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