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Oilfield reinjection water sterilizing agent

A technology for oil field re-injection of water and bactericide, applied in the direction of bactericide, biocide, biocide, etc., can solve the problems of inconvenient transportation, irritating the operator's skin, easy to volatilize, etc., and achieve the simplified water injection process and long sterilization time. Effective, chemically stable effect

Inactive Publication Date: 2010-11-17
JINZHONG JIELONG INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally used fungicides contain chlorine, phosphorus, formaldehyde and other components. These substances are combustion-supporting, highly toxic, have a strong pungent smell, corrode the skin, burn when encountering combustibles, explode, are volatile, and have no long-term effect. Sex, transportation is extremely inconvenient
If it is used carelessly, it will cause permanent damage to the groundwater layer, and the future generations will completely lose the precious back water source. At the same time, this substance can seriously irritate the skin, eyes, and mucous membranes of the operator. Long-term exposure can also easily cause cancer.
Polyguanidine is also a kind of fungicide, but there is no report on the use of polyguanidine as a raw material for fungicides in oil fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Example 1 A fungicide for oilfield reinjection water is composed of the following raw materials in weight ratios: 2 parts of butanediamine, 4 parts of guanidine sulfate, 1.6 parts of polyhexamethylene guanidine, and 1.4 parts of polyolefin-based guanidine. The preparation method is that firstly, butanediamine and guanidine sulfate are added into the reaction kettle in proportion, and the temperature is Stir at ℃ for 4 hours, cool to normal temperature after the reaction is completed, then add polyhexamethylene guanidine and polyalkenyl guanidine, and then stir and mix evenly.

[0008] The bactericide described in embodiment 1 is compared with traditional bactericide effect in Table 1

[0009]

this invention

Aldehydes

Bacteria

Phenols

Bacteria

Quaternary ammonium salts

fungicide

Chlorine

Bacteria

Iodine sterilization

agent

Alcohol sterilization

agent

Sterilization rate (10 6 / ml)

99.7％ ...

Embodiment 2

[0012] Embodiment 2, a fungicide for oilfield reinjection water, is composed of the following raw materials in weight ratio, 1 part of butanediamine, 5 parts of guanidine sulfate, 1 part of polyhexamethylene guanidine, and 2 parts of polyolefin-based guanidine.

[0013] The preparation method is: first add butyl diamine and guanidine sulfate into the reaction kettle in proportion, stir for 8 hours at a temperature of 120 ° C, cool to normal temperature after the reaction is completed, and then add polyhexamethylene guanidine, polyolefin-based guanidine Add, then stir to combine.

[0014] The bactericide described in embodiment 2 is compared with traditional bactericide effect in Table 3

[0015]

this invention

Aldehydes

Bacteria

Phenols

Bacteria

Quaternary ammonium salts

fungicide

Chlorine

Bacteria

Iodine sterilization

agent

Alcohol sterilization

agent

Sterilization rate (10 6 / ml)

99.5％

...

Embodiment 3

[0019] Embodiment 3, a fungicide for oilfield reinjection water, is composed of the following raw materials in weight ratio, 3 parts of butanediamine, 3 parts of guanidine sulfate, 2 parts of polyhexamethylene guanidine, and 1 part of polyolefin-based guanidine.

[0020] The preparation method is: first add butyl diamine and guanidine sulfate into the reaction kettle in proportion, stir for 2 hours at a temperature of 200 ° C, cool to normal temperature after the reaction is completed, and then add polyhexamethylene guanidine, polyolefin-based guanidine Add, then stir to combine.

[0021] The bactericide described in embodiment 3 is compared with traditional bactericide effect in Table 5

[0022]

this invention

Aldehydes

Bacteria

Phenols

Bacteria

Quaternary ammonium salts

fungicide

Chlorine

Bacteria

Iodine sterilization

agent

Alcohol sterilization

agent

Sterilization rate (10 6 / ml)

99.9％

...

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PUM

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Abstract

The invention relates to a sterilizing agent for an oilfield, in particular to an oilfield reinjection water sterilizing agent, which solves problems on the sterilization of oilfield reinjection water. The oilfield reinjection water sterilizing agent consists of the following raw materials in part by weight: 1 to 3 parts of butanediamine, 3 to 5 parts of guanidine sulfate, 1 to 2 parts of polyhexamethylene guanide and 1 to 2 parts of polyolefin-based guanide. The oilfield reinjection water sterilizing agent can serve as the sterilizing agent of the oilfield reinjection water, and has specially good effects on fungi, heterotrophic bacteria, particularly saprophytic bacteria, sulfate reducing bacteria and iron bacteria in the oilfield reinjection water, no pungent smell, nonirritant to the skin of an operator, stable chemical performance, long sterilizing time, incombustibility, no explosion and secure transport and storage.

Description

technical field [0001] The invention relates to a fungicide for oil field, in particular to a fungicide for oil field reinjection water. Background technique [0002] The bacterial content of oilfield reinjection sewage is generally high, generally including sulfate reducing bacteria, saprophytic bacteria, iron bacteria and so on. The massive growth and reproduction of bacteria will not only cause damage and blockage to the reservoir, affect the development effect, lead to a decrease in oil recovery, but also increase the pressure of the water injection well and increase the energy consumption of water injection. At the same time, the corrosion of surface pipelines, equipment and wellbore will be aggravated, which will eventually lead to the deterioration of the oilfield development effect, the increase of production cost, and the decline of the overall benefit, which seriously restricts the sustainable development of the oilfield. In order to overcome this problem, we adop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/44A01P1/00A01P3/00C02F1/50C02F103/10
Inventor 吴榆生董丽华
Owner JINZHONG JIELONG INDAL
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