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Bactericide used for oilfield flooding

An oilfield water injection and bactericide technology, applied in the directions of bactericides, biocides, biocides, etc., can solve the problems of low bactericidal rate, environmental damage, large dosage, etc., and achieve low toxicity, low cost, and stable chemical properties. Effect

Inactive Publication Date: 2017-03-15
WEIHAI YUNRUI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the bactericides commonly used in the prior art have technical problems such as large dosage, low bactericidal rate, and damage to the environment.

Method used

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  • Bactericide used for oilfield flooding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, isothiazolinone 70g, sodium dichloroisocyanurate 80g, tetrakis hydroxymethyl phosphorus sulfate 100g, hexamethylenetetraammonium 150g, chitosan 400g, water 1000g, prepared by the preparation method described in the technical scheme .

Embodiment 2

[0019] Embodiment 2, 150g of isothiazolinone, 20g of sodium dichloroisocyanurate, 300g of tetrakis hydroxymethyl phosphorus sulfate, 100g of hexamethylenetetraammonium, 800g of chitosan, 2000g of water, prepared according to the preparation method described in the technical scheme .

Embodiment 3

[0020] Embodiment 3, 80g of isothiazolinone, 70g of sodium dichloroisocyanurate, 120g of tetrakis hydroxymethyl phosphorus sulfate, 150g of hexamethylenetetraammonium, 600g of chitosan, 1000g of water, prepared by the preparation method described in the technical scheme .

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Abstract

The invention relates to a bactericide used for oilfield flooding, and belongs to the technical field of oil field water treatment. The bactericide contains 0.7 to 1.5 parts of isothiazolinone, 0.2 to 0.8 part of sodium dichloro cyanurate, 1 to 3 parts of tetrakis hydroxymethyl phosphonium sulfate, 1 to 1.5 parts of hexamethylenetetramine, 4 to 8 parts of chitosan, and 10 to 20 parts of water. The bactericide used for oilfield flooding is green, and is friendly to the environment.

Description

[0001] Technical field: The present invention relates to a fungicide for oilfield water injection, which belongs to the technical field of oilfield water treatment. [0002] Background technique: [0003] Water flooding is the main method of oilfield development in my country. The main source of water injection is the associated water separated from the oilfield produced fluid. The oilfield associated water has complex components, high salinity, high content of bacteria and microorganisms, and dissolved corrosive gases such as carbon dioxide, hydrogen sulfide, and oxygen, which can easily cause corrosion and scaling of the water injection system. With the increase of oil field production time, the quality of injection water is deteriorating, and the corrosion and scaling are also becoming more and more serious, seriously affecting the normal production of oil fields and causing huge economic losses. In order to slow down the corrosion and scaling of the oilfield water injectio...

Claims

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Application Information

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IPC IPC(8): A01N57/20A01N43/90A01N43/80A01N43/64A01N43/16A01P1/00A01P3/00A01P13/00C02F1/50C09K8/54
CPCA01N43/16A01N43/64A01N43/80A01N43/90A01N57/20C02F1/50C02F2303/04C09K8/54A01N2300/00
Inventor 孙爱梅
Owner WEIHAI YUNRUI INFORMATION TECH CO LTD
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