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Special defoaming agent for oil field

A defoamer, oil field technology, applied in the directions of foam dispersion/prevention, drilling compositions, chemical instruments and methods, etc., can solve the problems of unsatisfactory defoaming effect, low efficiency, oil and gas loss, etc., and achieve excellent anti-foaming The effect of foaming, defoaming fast, and good foam suppressing effect

Inactive Publication Date: 2017-06-20
广东中联邦精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a special defoamer for oil fields, which aims to solve the problem of unsatisfactory defoaming effect, oil and gas loss, efficiency low level problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A special defoamer for oil fields, wherein: by weight percentage, comprising:

[0018] Polysiloxane 45%;

[0019] Non-ionic surfactant 5%;

[0020] Polyoxyethylene polyoxypropylene polymeric acid 45%;

[0021] Mutual solvent 4.1%;

[0022] Catalyst 0.1%;

[0023] Dispersant 0.8%.

[0024] After adding the above-mentioned raw materials into the container, stir for 45 minutes to prepare the special defoamer for oil field.

[0025] Wherein the polysiloxane molecular weight is 2000, the nonionic surfactant is nitrogen-containing, the mutual solvent is diethylene glycol butyric acid; the nonionic surfactant is cetyltrimethylammonium bromide.

Embodiment 2

[0027] A special defoamer for oil fields, wherein: by weight percentage, comprising:

[0028] Polysiloxane 35%;

[0029] Non-ionic surfactant 4.5%;

[0030] Polyoxyethylene polyoxypropylene polymeric acid 55%;

[0031] Mutual solvent 4.6%;

[0032] Catalyst 0.1%;

[0033] Dispersant 0.8%.

[0034] After adding the above-mentioned raw materials into the container, stir for 40 minutes to prepare the special defoamer for oil field.

[0035] Wherein the polysiloxane molecular weight is 2500, the nonionic surfactant is nitrogen-containing, the mutual solvent is diethylene glycol butyric acid; the nonionic surfactant is cetyltrimethylammonium bromide.

[0036] The invention specially solves the defoaming problem in oil exploitation or processing. The invention is composed of non-ionic surface active agent and hydroxyl compound, which has excellent dispersibility and anti-foaming properties, fast defoaming and long-term foam suppression. It has a good antifoaming effect on var...

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Abstract

The invention discloses a special defoaming agent for an oil field. The special defoaming agent is prepared from the following raw materials by weight percent: 20 to 50 percent of polysiloxane, 4 to 6 percent of nonionic surfactant, 40 to 60 percent of polyoxyethylene polyoxypropylene polyacid, 3 to 8 percent of mutual solvent, 0.1 to 0.2 percent of catalyst, and 0.6 to 0.8 percent of dispersing agent. The substances are added and stirred for 30 to 60 min to obtain the special defoaming agent for the oil field. A molecular weight of the polysiloxane is 1000 to 5000, the nonionic surfactant is a nitrogen containing compound, and the mutual solvent is diethylene glycol butyric acid. The nonionic surfactant is hexadecyl trimethyl ammonium bromide. The special defoaming agent specially solves the defoaming problem in the petroleum mining or processing. The special defoaming agent consists of the nonionic surfactant and the hydroxyl compound, has excellent dispersing performance and defoaming and foam suppressing performance and is rapid in defoaming and long in foam suppression. The foam suppression effect for various heavy oil and light oil is good. The special defoaming agent is good in stability and good in compatibility of the solvent.

Description

technical field [0001] The invention relates to the field of defoamers, in particular to a special defoamer for oil fields. Background technique [0002] In the crude oil stabilization process, when the oil-gas mixture enters the separator, some stable foam will be formed on the oil-gas interface. When the oil and gas are separated, some liquid crude oil will be lost in the gas flow when the foam bursts. In order to overcome these problems, it is necessary to Add defoamer, and the general defoamer is pure silicone oil type defoamer, high viscosity, not easy to disperse in crude oil, and the addition of a large amount, the defoaming effect is not ideal. The purpose of the present invention is to provide an improved crude oil defoaming additive to solve the foam generated by crude oil in the process of oil-gas separation or crude oil stabilization. To achieve the purpose of less dosing, low cost and ideal defoaming effect. Thereby improving the efficiency of oil-gas separati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03B01D19/04
CPCC09K8/03B01D19/0404B01D19/0409
Inventor 王梅玲
Owner 广东中联邦精细化工有限公司
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