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A kind of acid thickener and its preparation method and application

A technology of acid thickener and chain extender, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve the effects of good shear stability, strong thickening ability, and increased force

Active Publication Date: 2021-10-01
SHANDONG NUOER BIOLOGICAL TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, aiming at the defects in the prior art, an acid thickener and its preparation method and application are provided, so as to solve one or more problems existing in the existing acid thickener in oil exploitation

Method used

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  • A kind of acid thickener and its preparation method and application
  • A kind of acid thickener and its preparation method and application
  • A kind of acid thickener and its preparation method and application

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preparation example Construction

[0076]Specifically, in some embodiments, the raw materials for the preparation of functional monomers may include 2-(chloromethyl)benzoyl chloride and N,N-dimethylhexadecylamine, N,N-dimethyldodecylamine One of alkylamine, N,N-dimethyltetradecylamine, and the functional monomer synthesis method includes the following steps: pre-add the reaction equipment in the reaction equipment equipped with electric stirrer, thermometer and nitrogen protection device Solvent dichloromethane, mix 2-(chloromethyl)benzoyl chloride with N,N-dimethylhexadecylamine, N,N-dimethyldodecylamine, N,N-dimethyl One of the tetradecylamines is added to the reaction equipment. After purging nitrogen and removing oxygen, heat up to about 30-50°C while stirring, and react for 8h-12h to prepare preliminary functional monomers; add a small amount of triethanolamine to the prepared preliminary functional monomers for adsorption reaction Generated hydrogen chloride gas, then add a certain amount of hydroxyethyl...

Embodiment 1

[0108] 1. An acid thickener prepared from the following components in parts by weight:

[0109] 40 parts of acrylamide, 80 parts of functional monomer, 350 parts of methacryloyloxyethyltrimethylammonium chloride, 0.8 part of chain extender polyethylene glycol diacrylate, surfactant oleic acid amidomethyl hydroxypropyl 15 parts of ammonium chloride, 0.13 parts of initiator (0.1 part of azobisisobutylamidine hydrochloride, 0.02 part of ammonium persulfate, 0.01 part of sodium bisulfite) and 500 parts of water;

[0110] Wherein, the functional monomer is prepared by reacting 2-(chloromethyl)benzoyl chloride and N,N-dimethylhexadecylamine and then esterifying with hydroxyethyl acrylate.

[0111] 2, a kind of preparation method of acid thickener, comprises the following steps:

[0112] (1) Preparation of functional monomers: 70 grams of dichloromethane, 38 grams of 2-(chloromethyl)benzoyl chloride and 27 grams of N,N- Dimethylhexadecylamine, after passing nitrogen to remove oxyge...

Embodiment 2

[0117] 1. An acid thickener prepared from the following components in parts by weight:

[0118] 50 parts of acrylamide, 100 parts of functional monomer, 400 parts of methacryloxyethyltrimethylammonium chloride, 1 part of chain extender polyethylene glycol diacrylate, surfactant cetyltrimethyl 13 parts of ammonium bromide, 0.13 parts of initiator (0.1 part of azobisisobutylamidine hydrochloride, 0.02 part of ammonium persulfate, 0.01 part of sodium bisulfite) and 440 parts of water;

[0119] Wherein, the functional monomer is prepared by reacting 2-(chloromethyl)benzoyl chloride and N,N-dimethyltetradecylamine, and then esterifying with hydroxyethyl acrylate.

[0120] 2, a kind of preparation method of acid thickener, comprises the following steps:

[0121] (1) Preparation of functional monomers: 70 grams of dichloromethane, 38 grams of 2-(chloromethyl)benzoyl chloride and 24 grams of N,N- Dimethyltetradecylamine, after passing nitrogen to remove oxygen, raise the temperature...

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Abstract

The invention relates to the technical field of petroleum / oil gas exploitation, in particular to an acid liquid thickener and its preparation method and application. The acid thickener of the present invention is prepared by the following components in parts by weight: 30-50 parts of acrylamide, 50-100 parts of functional monomer, 350-100 parts of methacryloyloxyethyltrimethylammonium chloride 400 parts, 0.5-3 parts of chain extender, 10-20 parts of surfactant, 0.1-0.5 part of initiator and 400-600 parts of water; wherein, the functional monomer adopts 2-(chloromethyl)benzoyl chloride And N, N-dimethyl alkylamine obtained. The acid thickener of the invention has high thickening performance, good temperature resistance and shear resistance, and can better adapt to the high-temperature acidification requirements of deep formations.

Description

technical field [0001] The invention relates to the technical field of petroleum / oil gas exploitation, in particular to an auxiliary agent for oil field acidification, in particular to an acid thickener and its preparation method and application. Background technique [0002] With the rapid development of the petroleum industry, the field of petroleum and natural gas exploration continues to expand, and the difficulty of oil layer exploitation is also increasing. Acidizing and acid fracturing, as a production stimulation technology for oil exploitation, are getting more and more attention. In addition, with the continuous deepening of the oil production stage of major oilfields in my country, the oil production conditions have become more and more harsh; the comprehensive water content has become higher, the crude oil has become heavier and thicker, the depth of the oil layer has increased, and the temperature has also increased. The method usually adopted in the oil field i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/56C08F220/36C09K8/74
CPCC08F220/34C09K8/725C09K8/74C08F220/56C08F220/36
Inventor 荣敏杰刘超许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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