Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Treatment method of oil field oil displacement agent rhamnolipid fermentation broth

A technology of rhamnolipid and fermentation liquid, which is applied in chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of sandstone adsorption, high solid content, and influence on oil displacement effect, and achieve low surface tension and interfacial tension, good temperature resistance, good salt resistance

Active Publication Date: 2020-05-29
陕西斯普曼生物工程有限公司
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many types of biosurfactants, the industrial products are very single
Rhamnolipid is an important biosurfactant that has been industrially produced at present. Its main application field is exactly the oil displacement agent used in petroleum development, but the fermentation yield of rhamnolipid is low (3%), and the production process control It is difficult (foaming) and difficult to separate and purify (extraction), so the cost of the finished product is high. For oil displacement agents, rhamnolipid fermentation broth is often used directly on site, but because of its complex composition, high solid content, and high sandstone adsorption, The oil displacement effect has been affected to a certain extent

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
  • Treatment method of oil field oil displacement agent rhamnolipid fermentation broth
  • Treatment method of oil field oil displacement agent rhamnolipid fermentation broth
  • Treatment method of oil field oil displacement agent rhamnolipid fermentation broth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for reducing the adsorption of rhamnolipid fermentation broth, comprising the following steps:

[0040] The content of rhamnolipid in the rhamnolipid fermentation broth with soybean oil as carbon source is about 50g / L, and the fermentation broth is separated by a butterfly centrifuge at a speed of 6600rpm to obtain the fermentation broth and sediment;

[0041] Then use a 100nm ceramic membrane to filter the fermentation broth to obtain a filtrate and a concentrate;

[0042] The precipitate and the concentrated solution are wet ground to obtain a 10-80nm nanoscale solid mixture;

[0043] Mix the nanoscale solid mixture and the filtrate evenly, and perform low-intensity ultrasonic treatment for 15 minutes. The ultrasonic conditions are: power 200W, frequency 30KHz, and the new surfactant is obtained.

Embodiment 2

[0045] A method for reducing the adsorption of rhamnolipid fermentation broth, comprising the following steps:

[0046] The rhamnolipid content in the rhamnolipid fermentation broth using corn oil as a carbon source is about 55g / L, and the fermentation broth is separated by a butterfly centrifuge at a speed of 6600rpm to obtain the fermentation broth and sediment;

[0047] Then use a 200nm ceramic membrane to filter the fermentation broth to obtain a filtrate and a concentrated solution;

[0048] Use the nano-microbe cell disruptor to obtain the 10-80nm nano-scale solid mixture;

[0049] Mix the nano-scale solid mixture and the filtrate evenly, and perform low-intensity ultrasonic treatment for 10 minutes. The ultrasonic conditions are: power 300W, frequency 40KHz, to obtain a new type of surfactant.

Embodiment 3

[0051] A method for reducing the adsorption of rhamnolipid fermentation broth, comprising the following steps:

[0052] The content of rhamnolipid in the rhamnolipid fermentation broth with soybean oil as carbon source is about 45g / L, and the fermentation broth is separated by a butterfly centrifuge at a speed of 8000rpm to obtain the fermentation broth and sediment;

[0053] Then use a 500nm ceramic membrane to filter the fermentation broth to obtain a filtrate and a concentrated solution;

[0054] The precipitate and the concentrated solution are wet ground to obtain a 10-80nm nanoscale solid mixture;

[0055] Mix the nano-scale solid mixture and the filtrate evenly, and perform low-intensity ultrasonic treatment for 10 minutes. The ultrasonic conditions are: power 500W, frequency 50KHz, and the new surfactant is obtained.

[0056] Determination of the properties of the surfactant of Example 1

[0057] Taking rhamnolipid as a measure standard, the surfactant of embodiment ...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a treatment method of an oil field oil displacement agent rhamnolipid fermentation broth. The method comprises the following steps: (1) centrifuging the rhamnolipid fermentation broth to obtain a fermentation broth and a precipitation layer; (2) filtering and concentrating the fermentation liquor in the step (1) by using a ceramic membrane, and respectively obtaining filtrate and concentrated liquor after the concentration is finished; (3) treating the precipitation layer in the step (1) and the concentrated solution in the step (2) to a nanoscale to obtain a nanoscaleparticle mixture in a range of 10-80nm; and (4) uniformly mixing the nanoscale particle mixture obtained in the step (3) with the filtrate obtained in the step (2), and carrying out low-intensity ultrasonic treatment, and carrying out ultrasonic treatment to obtain the composite surfactant. The surfactant has low surface tension and interfacial tension and good temperature resistance and salt resistance, can significantly reduce the adsorbability of rock to the surfactant, and has high oil displacement efficiency as an oil displacement agent.

Description

technical field [0001] The invention relates to a treatment method for reducing the adsorption of rhamnolipid sandstone in an oil-displacing agent in an oil field and improving the oil-displacing efficiency of the oil-displacing agent, and belongs to the technical field of surfactant oil-displacement in tertiary oil recovery engineering in oil fields. Background technique [0002] The information disclosed in this background section is only intended to increase some understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Rhamnolipid is a biosurfactant. Biosurfactants are surface-active metabolites secreted by microorganisms in the metabolic process when cultured under certain conditions, such as glycolipids, lipopeptides, and lipid derivatives. They were first discovered in the 1960s....

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 Applications(China)
IPC IPC(8): C09K8/584C07H15/04C07H1/06
CPCC09K8/584C07H15/04C07H1/06
Inventor 魏战胜杜建平居迎军孙引雀李艳周晓刘佳
Owner 陕西斯普曼生物工程有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com