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Desulfurization-sterilization-corrosion inhibition integrated treating agent and preparation method thereof

A treatment agent and corrosion inhibition technology, applied in the field of sulfur removal-sterilization-corrosion inhibition integrated treatment agent and its preparation, can solve the problems of secondary pollution of oilfields, increase oilfield production and operation load, etc. Good corrosion effect and wide purification effect

Pending Publication Date: 2019-04-12
西安三维科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the addition of the above fungicides, corrosion inhibitors and desulfurizers will cause certain secondary pollution and toxicity to the oil field, increasing the production and operating load of the oil field

Method used

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  • Desulfurization-sterilization-corrosion inhibition integrated treating agent and preparation method thereof

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Effect test

Embodiment 1

[0033] The present invention provides an integrated treatment agent for sulfur removal-sterilization-corrosion inhibition, which comprises the following components in weight percent:

[0034] Diallyl sulfide and diallyl thiosulfonate 25%,

[0035] Organic amines: polyethylene polyamine, diethylene diamine and triethylene tetramine 50%,

[0036] Formaldehyde 5%,

[0037] Cationic polyacrylamide and dimethylformamide 10%,

[0038] Alcohol 8%,

[0039] The remainder is water;

[0040] The molecular weight of the cationic polyacrylamide is 3-5 million;

[0041] The diallyl sulfide is diallyl trisulfide.

[0042] The preparation method of the described desulfurization-sterilization-corrosion inhibition integrated treatment agent comprises the following steps:

[0043] (1) Add the organic amine to the reaction kettle, stir and heat up to 65°C, then slowly add formaldehyde dropwise to the reaction kettle, after the dropwise addition, control the temperature at 75°C, and the rea...

Embodiment 2

[0048] The present invention provides an integrated treatment agent for sulfur removal-sterilization-corrosion inhibition, which comprises the following components in weight percent:

[0049] Diallyl sulfide and diallyl thiosulfonate 20%,

[0050] Organic amines: polyethylene polyamine, diethylene diamine and triethylene tetramine 40%,

[0051] Formaldehyde 10%,

[0052] Cationic polyacrylamide and dimethylformamide 5%,

[0053] Hydrophobically modified chitosan 10%,

[0054] Alcohol 5%,

[0055] The remainder is water;

[0056] The molecular weight of the cationic polyacrylamide is 3-5 million;

[0057] The diallyl sulfide is diallyl trisulfide and diallyl disulfide in a molar ratio of 3:1.

[0058] The preparation method of the described desulfurization-sterilization-corrosion inhibition integrated treatment agent comprises the following steps:

[0059] (1) Add the organic amine to the reaction kettle, stir and raise the temperature to 68°C, then slowly add formaldehy...

Embodiment 3

[0064] The present invention provides an integrated treatment agent for sulfur removal-sterilization-corrosion inhibition, which comprises the following components in weight percent:

[0065] Diallyl sulfide and diallyl thiosulfonate 30%,

[0066] Organic amines: polyethylene polyamine, diethylene diamine and triethylene tetramine 42%,

[0067] Formaldehyde 6%,

[0068] Cationic polyacrylamide 2% and dimethylformamide 3%,

[0069] Hydrophobically modified chitosan 8%,

[0070] Alcohol 6%,

[0071] The remainder is water;

[0072] The molecular weight of the cationic polyacrylamide is 3-5 million;

[0073] The diallyl sulfide is diallyl trisulfide and diallyl disulfide in a molar ratio of 2:1;

[0074] The weight ratio of the hydrophobically modified chitosan to the cationic polyacrylamide is 4:1.

[0075] The preparation method of the described desulfurization-sterilization-corrosion inhibition integrated treatment agent comprises the following steps:

[0076] (1) Add ...

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Abstract

The invention belongs to the technical field of oil field environmental protection, and particularly relates to a desulfurization-sterilization-corrosion inhibition integrated treating agent and a preparation method thereof. The agent can achieve high sulfur removal efficiency and good corrosion inhibition and sterilization effects by combining a polyamine and polysulfide compound system with other auxiliary agents (cationic polyacrylamide and dimethyl formamide); the product after reaction has good stability, small product toxicity and no secondary pollution. The agent can also be used for natural gas treatment and has the advantages of wide purification range, high purification degree, large absorption capacity and the like when being used for natural gas treatment. According to the preparation method of the agent, specific preparation processes and steps are determined based on the properties of each component, and the components are uniformly and stably mixed, so that the sterilization, sulfur removal and corrosion inhibition effects of the agent are best exerted; and meanwhile, the agent is low in toxicity, and no obvious secondary pollution is caused to petroleum.

Description

technical field [0001] The invention belongs to the technical field of oilfield environmental protection, and in particular relates to an integrated treatment agent for sulfur removal, sterilization and corrosion inhibition and a preparation method thereof. Background technique [0002] There are a large number of microorganisms in the oil field, which will cause corrosion and damage to equipment, blockage of pipelines and water injection wells; reduce the permeability of the oil layer voids, hinder water injection and oil recovery; even degrade other oilfield chemicals and weaken the use efficiency of their agents, so they need to be put in Bactericides to ensure the progress of oil field construction. [0003] In the secondary recovery of oilfields, a large amount of water is needed. In order to protect the environment, most modern oilfields adopt the method of reinjection after water injection treatment. Because the reinjection water generally has a high degree of salinit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/56C02F1/50C02F1/58C09K8/54C02F101/10C02F103/10
CPCC02F1/285C02F1/50C02F1/56C02F1/58C02F2101/101C02F2103/10C02F2303/04C02F2303/08C09K8/54
Inventor 许人军贺华镭唐英莉张磊惠海朋
Owner 西安三维科技发展有限责任公司
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