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Preparation of demulsifier for rapidly dehydrating crude oil of offshore platform

A rapid dehydration, offshore platform technology, used in chemical dehydration/demulsification, petroleum industry, processing hydrocarbon oil, etc., can solve the problems of difficult destruction, reduced oil production, etc., and achieve low cost, good effect, high surface active effect

Inactive Publication Date: 2020-06-19
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Petroleum is an important energy and basic chemical raw material. It is known as "black gold" and "industrial blood". It is also an important strategic material in my country. The reduction of oil production has become an inevitable problem, and in the process of oil exploitation, due to the high water content of crude oil, some areas even have a water content as high as 90%, coupled with the implementation of various enhanced oil recovery methods, the crude oil emulsion The stability is getting higher and higher, and the destruction is more difficult

Method used

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  • Preparation of demulsifier for rapidly dehydrating crude oil of offshore platform
  • Preparation of demulsifier for rapidly dehydrating crude oil of offshore platform
  • Preparation of demulsifier for rapidly dehydrating crude oil of offshore platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Add 20g of bisphenol A and 50g of triethylenetetramine into a four-necked bottle, stir and raise the temperature in a water bath to 50°C for 15 minutes, then slowly add 62.5g of 40% formaldehyde solution dropwise, and keep it warm for 30 minutes after the dropwise addition, then add 66.25 g xylene, after heating up to 105°C, carry out reflux dehydration, and then gradually raise the temperature to 190°C after 2 hours. At this time, the transparency of the reactant and xylene gradually increases, and the xylene is completely distilled at 190°C. Keep the reaction for 1 hour to complete the reaction. The product is dark red viscous liquid, and the initiator is obtained;

[0047] (2) Get 4g of starter and 15.84g of potassium hydroxide and put it into the reactor, and seal the reactor. Use nitrogen to purge and replace the air, then use a vacuum pump to evacuate, start heating after 5 minutes, stop heating when the temperature rises to 110°C, open the feed valve, feed 13...

Embodiment 1

[0051] In Example 1, the mass ratio of initiator, ethylene oxide, and propylene oxide was changed to 1:53:106 to obtain polyether A2, and modified to obtain modified demulsifier sample 2.

[0052] (1) Add 20g of bisphenol A and 50g of triethylenetetramine into a four-necked bottle, stir and raise the temperature in a water bath to 50°C for 15 minutes, then slowly add 62.5g of 40% formaldehyde solution dropwise, and keep it warm for 30 minutes after the dropwise addition, then add 66.25 g xylene, after heating up to 105°C, carry out reflux dehydration, and then gradually raise the temperature to 190°C after 2 hours. At this time, the transparency of the reactant and xylene gradually increases, and the xylene is completely distilled at 190°C. Keep the reaction for 1 hour to complete the reaction. The product is dark red viscous liquid, and the initiator is obtained;

[0053] (2) Get 4g of starter and 15.84g of potassium hydroxide and put it into the reactor, and seal the reactor...

Embodiment 3

[0057] In Example 1, the mass ratio of initiator, ethylene oxide, and propylene oxide was changed to 1:66:132 to obtain polyether A3, and modified to obtain modified demulsifier sample 3.

[0058] (1) Add 20g of bisphenol A and 50g of triethylenetetramine into a four-necked bottle, stir and raise the temperature in a water bath to 50°C for 15 minutes, then slowly add 62.5g of 40% formaldehyde solution dropwise, and keep it warm for 30 minutes after the dropwise addition, then add 66.25 g xylene, after heating up to 105°C, carry out reflux dehydration, and then gradually raise the temperature to 190°C after 2 hours. At this time, the transparency of the reactant and xylene gradually increases, and the xylene is completely distilled at 190°C. Keep the reaction for 1 hour to complete the reaction. The product is dark red viscous liquid, and the initiator is obtained;

[0059] (2) Get 4g of starter and 15.84g of potassium hydroxide and put it into the reactor, and seal the reactor...

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Abstract

The invention discloses preparation of a demulsifier for rapidly dehydrating crude oil of an offshore platform. The synthesis and improvement process comprises the following step: (1) adding 2 parts of bisphenol A and 5 parts of triethylene tetramine into a four-neck flask, performing stirring and heating until complete dissolution, slowly adding 2.5 parts of a formaldehyde solution with the concentration of 40% in a dropwise manner when the temperature is 35-55 DEG C, conducting heat preservation for 35-45 min, adding 4.75 parts of xylene, increasing the temperature to 100-110 DEG C to removemoisture in the flask, continuing increasing the temperature to 185-195 DEG C to distill out xylene, and performing reaction on the remaining substances sufficiently for 1-2h to generate an initiator. The novel modified demulsifier has a good research prospect in the field of demulsification. The problems that after polymer flooding, produced liquid is high in emulsification degree, the demulsification difficulty is remarkably improved, due to the fact that the space of an offshore platform is limited, the emulsion treatment time of a land oil field can reach one day or even longer, but the treatment time on the sea is far shorter than the land treatment time, and the requirement for the demulsifier is stricter are solved.

Description

technical field [0001] The invention relates to the technical field of oilfield chemicals, in particular to the preparation of a demulsifier for rapid dehydration of crude oil on offshore platforms. Background technique [0002] Petroleum is an important energy and basic chemical raw material. It is known as "black gold" and "industrial blood". It is also an important strategic material in my country. The reduction of oil production has become an inevitable problem, and in the process of oil exploitation, due to the high water content of crude oil, some areas even have a water content as high as 90%, coupled with the implementation of various enhanced oil recovery methods, the crude oil emulsion The stability is getting higher and higher, and the destruction is more difficult. [0003] Due to the many problems faced by onshore oilfields, more and more attention has been cast on the huge treasure house of the ocean. my country has started drilling operations in the shallow wat...

Claims

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Application Information

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IPC IPC(8): C10G33/04
CPCC10G33/04C10G2300/1033C10G2300/208
Inventor 耿孝恒郭海莹贾新磊
Owner BINZHOU UNIV
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