Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of rapid demulsifier suitable for processing polymer-containing production fluid and its preparation method

A technology of liquid treatment and demulsifier, applied in the field of demulsifier and its preparation, rapid demulsifier for the treatment of polymer-containing produced fluid and its preparation, to achieve the effect of rapid demulsification

Active Publication Date: 2016-02-17
CHINA NAT OFFSHORE OIL CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the demulsifiers used in various oilfields are mainly proposed for the crude oil emulsion after water flooding, and there is little work on demulsifiers for rapid demulsification of crude oil emulsion after polymer flooding

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 rapid demulsifier suitable for processing polymer-containing production fluid and its preparation method
  • A kind of rapid demulsifier suitable for processing polymer-containing production fluid and its preparation method
  • A kind of rapid demulsifier suitable for processing polymer-containing production fluid and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1, the preparation of initiator A-9 / 5 / 83

[0053] Add 5g of bisphenol A resin (structural formula as formula II, where x / y=0.5) and 1.47g of potassium hydroxide into the high temperature and high pressure reactor, and seal the reactor well. Before heating up, use nitrogen to purge and replace, then vacuumize, repeat twice, then start stirring and heat up, stop heating when the temperature rises to 120°C, open the feed valve, add 45g of propylene oxide dropwise, and control the reaction temperature. 120°C~140°C (the temperature fluctuates during the reaction process) and the initial pressure is 0.4MPa; after the reaction of the material drops to 0MPa, add 25g of butylene oxide dropwise, and control the initial pressure to 0.4MPa; After the butane reaction is completed and the pressure drops to 0MPa, add 415g of propylene oxide dropwise, and control the reaction temperature to 120°C to 140°C (the temperature fluctuates during the reaction) and the initial press...

Embodiment 2

[0056] Embodiment 2, the preparation of initiator A-9 / 7 / 83

[0057]Add 5g of bisphenol A resin (structural formula as formula II, where x / y=0.5) and 1.5g of potassium hydroxide into a high-temperature and high-pressure reactor, and seal the reactor well. Before heating up, use nitrogen to purge and replace, then vacuumize, repeat twice, then start stirring and heat up, stop heating when the temperature rises to 120°C, open the feed valve, add 45g of propylene oxide dropwise, and control the reaction temperature. 120°C~140°C (the temperature fluctuates during the reaction process) and the initial pressure is 0.4MPa; after the reaction of the material drops to 0MPa, add 35g of butylene oxide dropwise, and control the initial pressure to 0.4MPa; After the butane reaction is completed and the pressure drops back to 0MPa, add 415g of propylene oxide dropwise, and control the reaction temperature at 120°C to 140°C (the temperature fluctuates during the reaction) and the initial pres...

Embodiment 3

[0060] Embodiment 3, the preparation of initiator A-9 / 11 / 83 and A-9 / 15 / 83

[0061] Adopt the method of embodiment 1, and change the amount of butylene oxide to 55g, 75g respectively, obtain two kinds of initiators shown in formula I, mark as A-9 / 11 / 83, A-9 / 15 / 83.

[0062] In the present embodiment, the addition of potassium hydroxide is 0.3% of the total mass of bisphenol A resin, propylene oxide and butylene oxide, and the mass ratio of bisphenol A resin and the propylene oxide added for the first time is 1:9.

[0063] In the initiators A-9 / 11 / 83 and A-9 / 15 / 83 prepared in this example, m:n:p are 9:11:83 and 9:15:83, respectively.

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
dehydration rateaaaaaaaaaa
dehydration rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a quick demulsifying agent suitable for treatment of polymer-containing produced liquid and a preparation method of the demulsifying agent. The structure of the demulsifying agent provided by the invention is as shown in a formula III, wherein A-mnp is used for expressing an initiating agent as shown in a formula I. A preparation method of the initiating agent as shown in the formula I comprises the following steps: (1) carrying out polymerization reaction on bisphenol A resin and epoxypropane in the presence of oxygen and a catalyst; (2) adding epoxybutane to a reaction system obtained after ending reaction in the step (1), and further carrying out polymerization reaction; and (3) adding the epoxypropane to the reaction system obtained after ending reaction in the step (2), and carrying out polymerization reaction again so as to obtain the initiating agent. According to the preparation method of the demulsifying agent as shown in the formula III, the demulsifying agent is obtained by polymerization reaction of the initiating agent as shown in the formula I and ethylene oxide in the presence of oxygen and a catalyst. The demulsifying agent prepared by the method has a quick demulsifying effect on crude oil emulsion generated after polymer flooding in oil fields.

Description

technical field [0001] The invention relates to a demulsifier and a preparation method thereof, in particular to a rapid demulsifier suitable for processing polymer-containing production fluid and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] At present, many domestic oilfields have entered the stage of full-scale polymer injection, and the properties of polymer flooding fluids are quite different from those of water flooding fluids. For the produced fluid of polymer flooding, the distribution of residual polymer in the water phase and the oil-water interface leads to the enhancement of the stability of the oil-water emulsion, and the dehydration rate slows down and the dehydration rate decreases during demulsification. The offshore oil field is limited by the space of the platform, and the processing time of the produced fluid is usually short, so it is required to be able to quickly break the emulsio...

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): C08G65/28C10G33/04
Inventor 靖波段明檀国荣王虎翟磊张健
Owner CHINA NAT OFFSHORE OIL CORP