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Trimeric quaternary ammonium salt type oil field sterilizing desulfurizer and preparation method thereof

A polyquaternary ammonium salt and oil field sterilization technology, which is applied in botany equipment and methods, biocides, chemical instruments and methods, etc., can solve the incompatibility of fungicides and desulfurizers, the difficulty of chemical management, and the high cost of treatment, etc. problems, to achieve the effect of convenient chemical agent management and filling, improved sterilization effect, and high sterilization efficiency

Inactive Publication Date: 2019-01-18
陕西日新石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the secondary hydrogen sulfide produced by SRB bacteria and the self-generated hydrogen sulfide in the oil reservoir that have been produced before the dosing point, the field often adopts the method of adding an organic liquid desulfurizer to treat it. The risk of incompatibility of the performance of the agent and agent has caused great difficulties to the on-site agent management in the oil field

Method used

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  • Trimeric quaternary ammonium salt type oil field sterilizing desulfurizer and preparation method thereof
  • Trimeric quaternary ammonium salt type oil field sterilizing desulfurizer and preparation method thereof
  • Trimeric quaternary ammonium salt type oil field sterilizing desulfurizer and preparation method thereof

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Effect test

Embodiment 1

[0065] The trimer quaternary ammonium salt type oil field bactericidal desulfurizer described in this embodiment, the constituent components and weight percentages of the raw materials used are as follows:

[0066]

[0067] The structural formula of the trimerized quaternary ammonium compound is as follows:

[0068]

[0069] The preparation method of the above-mentioned trimerized quaternary ammonium salt type oil field bactericidal desulfurizer, its concrete operation steps are as follows:

[0070] Step (1), the preparation of trimerized quaternary ammonium compound

[0071] 1.1 Add 300g of N,N-dimethylpropylenediamine into the container, and add 100g of paraformaldehyde in 4 batches to the N,N-dimethylpropylenediamine under stirring conditions to carry out the aldehyde-amine condensation reaction, and the stirring speed It is always controlled at 100rpm / min. Since paraformaldehyde is added to N,N-dimethylpropylenediamine, aldolamine condensation reaction will occur, w...

Embodiment 2

[0079] The trimer quaternary ammonium salt type oil field bactericidal desulfurizer described in this embodiment, the constituent components and weight percentages of the raw materials used are as follows:

[0080]

[0081] The structural formula of the trimerized quaternary ammonium compound is as follows:

[0082]

[0083] The preparation method of the above-mentioned trimerized quaternary ammonium salt type oil field bactericidal desulfurizer, its concrete operation steps are as follows:

[0084] Step (1), the preparation of trimerized quaternary ammonium compound

[0085] 1.1 Add 300g of N,N-dimethylpropylenediamine into the container, and add 200g of paraformaldehyde in 6 batches to the N,N-dimethylpropylenediamine under stirring conditions to carry out aldehyde-amine condensation reaction. It is always controlled at 50rpm / min. Since paraformaldehyde is added to N,N-dimethylpropylenediamine, aldehyde-amine condensation reaction will occur, which is an exothermic re...

Embodiment 3

[0093] The trimer quaternary ammonium salt type oil field bactericidal desulfurizer described in this embodiment, the constituent components and weight percentages of the raw materials used are as follows:

[0094]

[0095] The structural formula of the trimerized quaternary ammonium compound is as follows:

[0096]

[0097] The preparation method of the above-mentioned trimerized quaternary ammonium salt type oil field bactericidal desulfurizer, its concrete operation steps are as follows:

[0098] Step (1), the preparation of trimerized quaternary ammonium compound

[0099] 1.1 Add 300g of N,N-dimethylpropylenediamine into the container, add 50g of formaldehyde in 2 batches to N,N-dimethylpropylenediamine under stirring condition, add 100g of paraformaldehyde in 3 batches For the aldolamine condensation reaction, the stirring speed is always controlled at 70rpm / min. Since paraformaldehyde is added to N,N-dimethylpropylenediamine, the aldolamine condensation reaction w...

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Abstract

The invention belongs to the technical field of wet hydrogen sulfide removal during oil and gas field exploitation and gathering processes, and particularly relates to a trimeric quaternary ammonium salt type oil field sterilizing desulfurizer and a preparation method thereof. The trimeric quaternary ammonium salt type oil field sterilizing desulfurizer comprises the following components in percentage by weight: 20-50% of a trimeric quaternary ammonium salt compound, 10-30% of an organic aldehyde compound, 5-20% of a pour point depressant and the balance of water, wherein the sum percentage ofthe components is 100%. Combined with the characteristics of oil field sewage, the trimeric quaternary ammonium salt type oil field sterilizing desulfurizer not only improves the bactericidal effecton SRB bacteria, but also directly chemically reacts with secondary hydrogen sulfide, reduces the harm of the SRB bacteria to metal equipment, pipelines and stratums, and also solves the compatibilityproblem between an on-site disinfectant and the desulfurizer during on-site use.

Description

technical field [0001] The invention belongs to the technical field of hydrogen sulfide removal by wet method in oil and gas field exploitation and gathering and transportation process, and in particular relates to a trimerized quaternary ammonium salt type oil field bactericidal desulfurizer and a preparation method thereof. Background technique [0002] Most of my country's oilfields have entered the period of high water cut, and oil reservoir sewage reinjection to enhance oil recovery is one of the most important technologies in petroleum. However, the sulfate and other nutrients contained in the injected water stimulate the growth, reproduction and metabolism of Sulfate Reducing Bacteria (SRB) in the oil reservoir, leading to acidification of the oil reservoir (i.e. secondary H 2 S). For the oil industry production, the hazards of reservoir acidification caused by SRB are manifested in the following three aspects: (1) microbial corrosion of oil and gas production and tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/50A01N25/30A01N43/66C09K8/54C02F101/10C02F103/10
CPCA01N25/30A01N43/66C02F1/00C02F1/50C02F2101/101C02F2103/10C09K8/54C09K2208/20
Inventor 刘瑜赵全亭左胜军李飞阳安东东郭琦孙彦武
Owner 陕西日新石油化工有限公司
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