Compounded demulsifier composition and demulsifier used for alkali-surfactant-polymer (ASP) combination flooding produced liquid

A ternary compound and demulsifier technology, which is applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of unsatisfactory demulsification effect, and achieve the effect of high demulsification dehydration rate, lower water weight percentage, and weak corrosion

Active Publication Date: 2019-05-03
PETROCHINA CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a compound type demulsifier composition and demulsifier for ASP flooding production fluid, to solve the problem of containing high content of alkali, surfactant and polymer in the prior art Unsatisfactory demulsification effect of ASP flooding produced fluid

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
  • Compounded demulsifier composition and demulsifier used for alkali-surfactant-polymer (ASP) combination flooding produced liquid
  • Compounded demulsifier composition and demulsifier used for alkali-surfactant-polymer (ASP) combination flooding produced liquid
  • Compounded demulsifier composition and demulsifier used for alkali-surfactant-polymer (ASP) combination flooding produced liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The composition of the demulsifier component that adopts in compound type demulsifier composition is as follows:

[0036] AR type demulsifier is an oil-soluble non-ionic demulsifier, with phenolic resin as the initiator, toluene-2,4-diisocyanate as the crosslinking agent, the product solid content is 80%, the solvent is xylene, the color (APHA) is 360, the hydroxyl value is 38.5mgKOH / g, and the pH value is 7;

[0037] SP-type demulsifier is a non-ionic surfactant component, with polyol as the initiator, NaOH and ethylene oxide as the catalyst, the solid content of the product is 80%, the solvent is xylene, the color (APHA) is 300, the hydroxyl value is 53.5mgKOH / g, and the pH value is 8;

[0038] AE type demulsifier is a non-ionic demulsifier, with polyethylene polyamine as the initiator, toluene-2,4-diisocyanate as the crosslinking agent, the solid content of the product is 80%, the solvent is methanol, and the chromaticity (APHA) is 250, the hydroxyl value is 42.5mg...

Embodiment 2

[0046] The amount of AR type demulsifier, SP type demulsifier and AE type demulsifier, the amount of methanol, and the weight percentage content of demulsifier components in the compound type demulsifier are shown in Table 1, and the others are the same as in Example 1.

Embodiment 3

[0048] The amount of AR type demulsifier, SP type demulsifier and AE type demulsifier, the amount of methanol, and the weight percentage content of demulsifier components in the compound type demulsifier are shown in Table 1, and the others are the same as in Example 1.

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
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to view more

Abstract

The invention provides compounded demulsifier composition and a demulsifier used for an ASP combination flooding produced liquid. The compounded demulsifier composition includes a demulsifier component, which includes an AR demulsifier, a SP demulsifier and an AE demulsifier according to the following weight ratio: 10-25% of the AR demulsifier, 45-80% of the SP demulsifier and 10-45% of the AE demulsifier, wherein the weight percentages of the three demulsifiers are based on solid content of 80%. The demulsifier produced from the demulsifier composition has the advantages of high demulsification dehydration rate, ordered oil-water interface, clear and clarified separated water, and greatly reduced oil content in demulsified wastewater and weight percentage of water in purified oil when being used for demulsification on the ASP combination flooding produced liquid containing high contents of alkalis, surfactants and polymers.

Description

technical field [0001] The invention relates to the field of oil recovery technology, in particular to a composite demulsifier composition and demulsifier used for ASP flooding production fluid. Background technique [0002] Water is often mixed in the oil extraction process, and the crude oil must be dehydrated before transportation to reduce transportation costs. The free water in crude oil is easy to separate and remove, while the emulsified water in crude oil generally needs to be removed by adding a demulsifier. As an important EOR technology, ASP flooding was industrialized in Xinjiang Oilfield in 2014. At present, the cumulative oil production of the produced fluid of weak alkali ASP flooding carried out in the Qidong 1 area of ​​Xinjiang Oilfield has exceeded 130,000 tons. Preliminary studies have shown that the produced fluid of ASP flooding in Xinjiang Oilfield contains high content of alkali, surfactant and polymer. The synergistic effect of alkali, surfactant ...

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): C10G33/04C08G18/54C08G18/32C08G65/28
Inventor 斯绍雄宫兆波严忠任召言张玉敏胡君
Owner PETROCHINA CO LTD
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