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Emulsion collapse agent and preparation method thereof

A technology of anti-slumping agent and emulsion, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of single product and lack of mature industrial products, and achieve the effect of mild reaction conditions and simple and feasible preparation process

Active Publication Date: 2014-11-19
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic emulsion-type flushing fluid products are single, mainly anionic emulsions, which are used to meet the needs of oil exploitation, while there are few researches on emulsion-type flushing fluids for geological and mineral exploration, and related mature industrial products are still lacking.

Method used

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  • Emulsion collapse agent and preparation method thereof
  • Emulsion collapse agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0038] Examples 1-9 are used to illustrate the preparation method of the emulsion anti-slumping agent provided by the present invention.

[0039] According to the component contents listed in Table 1, the emulsion anti-slump agent was prepared.

[0040] Put mineral oil, water and emulsifier in a four-necked bottle, stir and mix at a constant temperature of 40°C to obtain a reverse pre-emulsion for later use, mix PCM and MTCA in proportion to obtain a mixture in a dropping funnel, and pass nitrogen and Under the condition of stirring (speed 800rpm / min), the mixture of PCM and MTCA is added dropwise to the reverse pre-emulsion at a speed of 20ml / min, continue to stir and pass nitrogen gas for 20min, add initiator, and continue to pass nitrogen gas for 15min to obtain the emulsion Anti-slump agents 1-9.

[0041] Table 1

[0042]

[0043] In embodiment 1-9, the specific selection of each component is as follows:

[0044] In Example 1-5, the initiator is composed of ammonium ...

Embodiment 6

[0046] The emulsion anti-slump agent was prepared according to the method of Example 1, except that the initiator was composed of hydrogen peroxide and ferrous sulfate, and the weight ratio of the two was 1:1.5.

Embodiment 7

[0048] The emulsion anti-slump agent was prepared according to the method of Example 1, except that the initiator was composed of hydrogen peroxide and ferrous sulfate, and the weight ratio of the two was 1:1.

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Abstract

The invention discloses an emulsion collapse agent. The emulsion collapse agent is obtained through using N-vinyl-pyrrolidone and (3-methyl-acrylamide) propyl trimethyl ammonium chloride to contact with an initiating agent in anti-phase pre-emulsion. The emulsion collapse agent is simple, convenient and practicable in preparation process, mild in reaction conditions, and the obtained product has a solid content ranging from 35% to 40%, molecular weight not less than 50 million, monosome residual volume not higher than 0.5%, a dissolution rate limited within 1 minute at the maximum, and stability capable of lasting for more than a year.

Description

technical field [0001] The invention relates to the field of preparation of organic polymer materials, in particular to an emulsion anti-slump agent and a preparation method thereof. Background technique [0002] Water-in-oil inverse polymerization emulsion flushing fluid is an exploration aid widely used in resource exploration at home and abroad. It forms an emulsion with water as the dispersed phase and oil as the continuous phase by dispersing a certain amount of polymer water phase into the oil phase or mineral oils of different salinity. The additive is composed of water phase, oil phase, emulsifier and other treatment agents, wherein the oil phase is the external phase, and the water phase is the internal phase, mainly mineral oil with high ignition point, high flash point and high aniline point. The water-in-oil reverse-phase polymerization emulsion type flushing fluid system has low density and little damage to the reservoir, which can prevent the occurrence of los...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F226/10C08F220/60C08F2/32C09K8/56
Inventor 陈礼仪叶长文王胜李之军袁进科霍宇翔袁学武韦猛
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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