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Preparation method for high-efficiency oilfield bactericide

A bactericide, oil field technology, applied in the field of water treatment, can solve the problems of increasing the harm of VOC environment, poor bactericidal effect, reducing bactericidal activity, etc., to achieve good compatibility, solve the problem of drug resistance, and inhibit the growth of bacteria.

Active Publication Date: 2013-10-09
山东泰和科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many onshore oil fields in my country, the water injection system is mainly carried out under airtight conditions, and the organic matter content in the water injection is very high. Usually, a large amount of oxidant is required to achieve the purpose of sterilization. The sterilization effect is not good, and it will increase corrosion.
The most used non-oxidizing fungicides are quaternary ammonium salts, quaternary phosphonium salts, alkylguanidines and compound fungicides. Quaternary phosphonium salt fungicides are difficult to industrialize because of their high cost. Quaternary ammonium salts are the most common and most popular. One of the effective bactericides, not only has bactericidal effect, but also has a synergistic effect on bactericidal active components, and has a strong peeling effect on slime, but quaternary ammonium salts also have deficiencies, such as water injection containing many suspended particles, emulsified Negative substances such as oil beads will interact with quaternary ammonium salts, making them unable to generate electrostatic attraction with cell walls, reducing their bactericidal activity or even ineffective
However, compound fungicides are cumbersome due to the inability to calculate and adjust the compatibility and synergistic effects between components, and some compound fungicides are added with solvents and surfactant co-solvents to increase the cost and increase the impact of VOC on the environment. harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] High-efficiency oil field bactericide of the present invention realizes preparation by following process:

[0028] (1) 900kg of acetone is added to the reactor, and 655kg of catechol is slowly added to the reactor;

[0029] (2) Control the temperature at 30±2°C, add 780kg of N,N-dipropyl-1-propylamine dropwise at a rate of 300L / h, and keep the temperature to continue the reaction for 10min;

[0030] (3) Raise the temperature to 65±2°C, add 495kg of epichlorohydrin dropwise at a rate of 180L / h, after the dropwise addition, keep at 80±2°C and continue the reaction for 7h;

[0031] (4) Down to normal temperature, add 2170kg of reverse osmosis water, stir evenly and discharge.

Embodiment 2

[0033] High-efficiency oil field bactericide of the present invention realizes preparation by following process:

[0034] (1) 750kg sherwood oil is added in the reactor, 400kg phloroglucinol is slowly added into the reactor;

[0035] (2) Control the temperature at 35±2°C, add 1344 kg of trioctyl tertiary amine dropwise at a rate of 800 L / h, and keep the temperature to continue the reaction for 10 minutes;

[0036] (3) Raise the temperature to 50±2°C, add 292kg of epichlorohydrin dropwise at a rate of 150L / h, after the dropwise addition, keep at 85±2°C and continue the reaction for 5h;

[0037] (4) Down to normal temperature, add 2214kg of reverse osmosis water, stir and discharge evenly.

Embodiment 3

[0039] High-efficiency oil field bactericide of the present invention realizes preparation by following process:

[0040] (1) 400kgDMF is added in the reactor, and 380kg of butanediol is slowly added to the reactor;

[0041] (2) Control the temperature at 40±2°C, add 1874kg of dodecyltetradecylmethyl tertiary amine dropwise at a rate of 1000L / h, and keep the temperature to continue the reaction for 10min;

[0042] (3) Raise the temperature to 70±2°C, add 388kg of epichlorohydrin dropwise at a rate of 300L / h, after the addition is complete, keep the temperature at 70±2°C and continue the reaction for 6 hours;

[0043] (4) Down to normal temperature, add 1000kg of reverse osmosis water, stir evenly and discharge.

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Abstract

A preparation method for a high-efficiency oilfield bactericide comprises the following preparing steps: adding a solvent into a reaction kettle, starting to heat, and adding polyol or / and polyphenol to the reaction kettle; controlling the temperature of 50 DEG C or less and dropwise adding tertiary amine, after finishing addition, stirring fully, and holding the temperature for 10 min; raising the temperature, dropwise adding epoxy chloropropane, after finishing addition, and holding the temperature for reaction; and adding reverse osmosis water to adjust an active matter content. The bactericide has the special advantages that: the prepared oilfield dedicated bactericide has double-effect bactericidal performance; the bactericide is an updating product of an oilfield bactericide SRB, and can effectively solve a drug resistance problem of sulfate reducing bacteria; and the bactericide has good compatibility, and can effectively exterminate and inhibit the oilfield sulfate reducing bacteria. The bactericide has a significant inhibiting effect on bacterial breeding in oilfield water injection and oil extraction production systems, and is especially suitable for polymer-containing oil extraction wastewater treatment and reinjection systems.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method of a high-efficiency oilfield fungicide. Background technique [0002] Microorganisms in the oilfield system can cause corrosion and damage to drilling equipment, water injection pipelines and other metal materials, blockage of pipelines and water injection wells; reduce the pore permeability of oil layers, hinder water injection and oil production; even degrade other oilfield chemicals and reduce the dosage of chemicals usage efficiency. These hazards have brought huge economic losses to industry and oil production operations. The annual loss of metals due to corrosion in the global oil extraction industry can reach 18% of its metal usage. [0003] Measures to control bacteria in oilfield systems: cleaning water injection system, adjusting water injection process, microbial control methods, physical and chemical treatment methods of ult...

Claims

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Application Information

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IPC IPC(8): A01N43/20A01P1/00C09K8/54A01N33/02A01N31/08A01N31/02
Inventor 宋盟盟程终发万振涛张秀华齐晓婧任泽旭
Owner 山东泰和科技股份有限公司
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