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

Produced fluid dewatering demulsifier for accumulating and repelling crude oil

A technology of dehydration and demulsification of crude oil, which is applied in the direction of dehydration/demulsification by chemical methods, and can solve the problem that the oil content of sewage cannot meet the discharge standard

Active Publication Date: 2009-07-15
PETROCHINA CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the problem that the existing demulsifiers can only achieve crude oil dehydration and water content up to 1.0% qualified oil standard, and the oil content of sewage cannot meet the discharge standard

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In this example, the raw materials used are all industrial grades, and the addition ratios are all weight percentages.

[0024] One, the preparation of A surfactant

[0025] Put the 13.2% perfluorooctane sulfonyl fluoride initiator for the preparation of the intermediate PEA in a 1500L stainless steel reactor, start stirring, raise the temperature to 120±5°C, evacuate, fill with nitrogen, and slowly add 86.8% epoxy Ethane, the reaction pressure is controlled at 0.2-0.4MPa, after the dropwise addition is completed, after the pressure in the reactor returns to zero, the temperature is lowered and the material is discharged to obtain the intermediate PEA.

[0026] Put 52.3% intermediate PEA and 0.13% potassium hydroxide for the preparation of A surfactant in a 1500L stainless steel reaction kettle, start stirring, heat up to 130±5°C, evacuate, fill with nitrogen, and slowly add 47.57% epoxy Propane, the reaction pressure is controlled at 0.2-0.4MPa, after the dropwise add...

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

A demulsifier for polymer flooding crude oil dehydration and a preparation method thereof. It is characterized in that: firstly prepare three kinds of surfactants respectively, then place the three kinds of surfactants in an enamel mixing tank for stirring, heating, add methanol and water dropwise, and obtain demulsifier for polymer flooding crude oil dehydration after cooling down. Its demulsification and dehydration effect is better than that of existing demulsifiers. In the dehydration of crude oil, the amount of dehydration demulsifier in crude oil production fluid produced by polymer flooding is small, the water content of crude oil after dehydration is less than 0.2%, and the oil content of sewage is less than 50mg / l. The water content after the crude oil is removed meets the requirements; the oil content in the sewage is reduced from above 5500mg / l to below 50mg / l.

Description

Technical field [0001] The invention relates to a demulsifier for polymer flooding crude oil dehydration and a preparation method of the demulsifier for polymer flooding crude oil. Background technique [0002] In order to meet the standard of high-quality oil for export after dehydration of crude oil, meet the standard of sewage after dehydration, and reduce the cost of demulsification and dehydration of crude oil, technicians have developed many types of demulsifiers for on-site technical problems. Many crude oil demulsification and dehydration problems have been solved, but some technical problems have been ignored. For example, after the production fluid containing polymer is demulsified and dehydrated, the oil content in the sewage is high, how should it be solved. [0003] In order to improve the sweep coefficient of the oil layer in the late stage of oilfield development, some recoverable reserves can be obtained, and the oil recovery rate can be improved. Productio...

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): C10G33/04
Inventor 付亚荣蔡远红刘建华申玉健
Owner PETROCHINA CO LTD
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