A kind of biological regulation preparation for polymer flooding produced water and using method thereof

A technology of polymers and preparations, applied in plant growth regulators, animal repellents, botanical equipment and methods, etc., can solve problems such as aggravated oil-water emulsification, difficulty in oil-water separation, and secondary pollution of the environment to maintain stability , Inhibit microbial corrosion and save water resources

Active Publication Date: 2022-05-17
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the quaternary ammonium salt bactericides in the above-mentioned prior art can effectively reduce the precipitation of polymers, the technical problem still exists in that, when used for a long time, microorganisms are resistant to non-oxidizing bactericides, such as quaternary ammonium salts and amine compounds. , anthraquinones, aldehydes, etc. will all produce drug resistance and become drug-resistant bacteria. It will cause difficulty in oil-water separation, affect the purification and deoiling of produced water, and cause secondary environmental pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of biological regulation preparation for polymer flooding produced water and using method thereof
  • A kind of biological regulation preparation for polymer flooding produced water and using method thereof
  • A kind of biological regulation preparation for polymer flooding produced water and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a bioregulation agent for polymer flooding produced water, the bioregulation agent is prepared by the following method: take polymer flooding produced water, remove the polymer flooding produced water Crude oil; add nutrients to the polymer flooding produced water after removing crude oil, carry out anaerobic fermentation under the condition of 40±1°C, use nitrogen to maintain constant pressure during the anaerobic fermentation process, the pressure is 1MPa, anaerobic fermentation The fermentation time is 84 hours, and the fermentation liquid after the anaerobic fermentation is completed is the biological regulation preparation.

[0031] Nutrients described in the present embodiment include phosphate, ammonium salt, heavy metal salt solution and complex acid, wherein said phosphate is NaH 2 PO 4 and K 2 HPO 4 , the NaH 2 PO 4 and K 2 HPO 4 The addition amount in the polymer flooding produced water is 1.2g / L; the ammonium salt is (NH 4 ) ...

Embodiment 2

[0033] The bioregulation preparation in this example is prepared by the following method: take the polymer flooding produced water, remove the crude oil in the polymer flooding produced water; add Nutrients, anaerobic fermentation is carried out under the condition of 40±1°C, nitrogen is used to maintain constant pressure during anaerobic fermentation, the pressure is 1MPa, and the time of anaerobic fermentation is 108 hours. The fermentation liquid after anaerobic fermentation is For the biological regulation agent.

[0034] Nutrients described in the present embodiment include phosphate, ammonium salt, heavy metal salt solution and complex acid, wherein said phosphate is NaH 2 PO 4 and K 2 HPO 4 , the NaH 2 PO 4 and K 2 HPO 4 The addition amount in the polymer flooding produced water is 1g / L; the ammonium salt is (NH 4 ) 2 SO 4 , the (NH 4 ) 2 SO 4 The addition amount in the polymer flooding produced water is 0.3g / L; The heavy metal salt solution is a mixed solu...

Embodiment 3

[0036] The bioregulation preparation in this embodiment is prepared by the following method: the bioregulation preparation is prepared by the following method: take the polymer flooding produced water, remove the crude oil in the polymer flooding produced water; Nutrients are added to the output water of the polymer flooding after the crude oil, and anaerobic fermentation is carried out under the condition of 40±1°C. During the anaerobic fermentation, nitrogen gas is used to maintain a constant pressure, the pressure is 1MPa, and the anaerobic fermentation time is After 84-108 hours, the fermentation broth after the anaerobic fermentation is completed is the biological regulation preparation. This implementation

[0037] Nutrients described in the example include phosphate, ammonium salt, heavy metal salt solution and complex acid, wherein said phosphate is NaH 2 PO 4 and K 2 HPO 4 , the NaH 2 PO 4 and K 2 HPO 4 The addition amount in the polymer flooding produced wate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a biological regulation preparation. The biological regulation preparation uses polymer flooding produced water as a raw material, and after anaerobic fermentation by adding nutrients, bacteria with sulfur ion oxidizing ability, that is, sulfur oxidizing bacteria, will be formed in the fermentation liquid , sulfur-oxidizing bacteria can fix CO 2 As a carbon source, it can perform chemoautotrophic growth and can also perform chemoheterotrophic growth; sulfur oxidizing bacteria can be sulfide, elemental sulfur, sulfite, thiosulfate, thiocyanate, SDS, tetrasulfate , p-aminobenzenesulfonic acid and methionine are used as energy sources for growth metabolism. Sulfur-oxidizing bacteria have a competitive inhibitory effect on sulfate-reducing bacteria. The fermentation broth containing sulfur-oxidizing bacteria is reused for polymer flooding produced water, which can inhibit the growth of sulfate-reducing bacteria (SRB) and inhibit the microbial corrosion of substrate materials. , while maintaining the stability of polymer-containing wastewater, such water can be used to configure polymer flooding fluid to save water resources.

Description

technical field [0001] The invention relates to the field of polymer-containing sewage treatment in oilfields, in particular to a biological control preparation for polymer flooding produced water and a method for using the same. Background technique [0002] With the popularization and application of tertiary oil recovery technologies such as polymer flooding and ASP flooding, the effect of oil recovery and production increase is remarkable. However, while greatly increasing the oil production, the hydrolysis of the oil displacement polymer in the oil recovery system and the addition of a large number of chemical agents lead to a more complicated and stable emulsification of the produced fluid, and further lead to a decrease in the bacterial content in the exported sewage. less than effective control. [0003] Produced water from polymer flooding contains a large number of bacteria, mainly SRB bacteria (sulfate reducing bacteria). SRB bacteria can easily cause pipeline cor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/22C02F3/34C02F103/10
Inventor 周海刚董晓通徐明明张志振
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap