High-efficiency thick oil washing agent and preparation method thereof

A technology of washing oil and heavy oil, which is applied in the field of small molecule compounds, can solve the problems of difficult to peel off and disperse heavy oil, low polymer activity, low elution efficiency, etc., and achieve green environmental protection, high activity, and micelle concentration in the reaction process Reduced effect

Inactive Publication Date: 2019-10-11
烟台索山机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Studies have shown that in the late stage of thermal recovery of heavy oil, the remaining oil in the reservoir is mostly enriched and partially dispersed. The use of polymer flooding can effectively improve the development of remaining oil between wells. However, due to the low activity of polymers, it is difficult to Stripping of heavy oil dispersed on reservoir rocks, resulting in a formation enriched with a large amount of remaining oil
Binary compound flooding theoretically solves the above problems, but the existing surfactants have the problem of low elution efficiency, so it is necessary to develop high-efficiency heavy oil washing agents

Method used

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  • High-efficiency thick oil washing agent and preparation method thereof
  • High-efficiency thick oil washing agent and preparation method thereof
  • High-efficiency thick oil washing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: High-efficiency heavy oil detergent C 1 preparation of

[0023] (1) Add 1mol maleic anhydride, 49.03g ethylene glycol and 196.12g p-toluenesulfonic acid into a four-neck flask equipped with a stirrer, thermometer and reflux condensing device, then add 490.3g solvent acetone, and feed nitrogen for 3min , and then heated to 30°C, with a stirring rate of 200rpm; after complete dissolution, the temperature was raised to 60°C, and the stirring rate was adjusted to 500rpm, and the heating switch was turned off after 1 hour of reaction, and the mixture solution was obtained after cooling to room temperature;

[0024] (2) Install the water separator on the above-mentioned four-necked flask, and then configure 1.1mol sodium bisulfite into an aqueous solution with a mass concentration of 40% and add it to the four-necked flask, install a reflux device, heat to 105°C, and stir The speed is 400rpm, the power is turned off after 2 hours of reaction, and the mixture is...

Embodiment 2

[0029] Embodiment 2: High-efficiency heavy oil detergent C 2 preparation of

[0030] (1) Add 1mol maleic anhydride, 53.93g ethylene glycol and 392.24g p-toluenesulfonic acid into a four-neck flask equipped with a stirrer, thermometer and reflux condensing device, then add 784.49g solvent acetone, and feed nitrogen for 4min , and then heated to 50°C, with a stirring rate of 350rpm; after complete dissolution, the temperature was raised to 75°C, and the stirring rate was adjusted to 560rpm, and the heating switch was turned off after 4 hours of reaction, and the mixture solution was obtained after cooling to room temperature;

[0031] (2) Install the water separator on the above-mentioned four-necked flask, and then configure 1.16mol sodium bisulfite into an aqueous solution with a mass concentration of 40% and add it to the four-necked flask, install a reflux device, heat to 115°C, and stir The speed is 460rpm, the power is turned off after 8 hours of reaction, and the mixture...

Embodiment 3

[0035] Embodiment 3: High-efficiency heavy oil detergent C 3 preparation of

[0036] (1) Add 1mol maleic anhydride, 61.15g ethylene glycol and 415.6g p-toluenesulfonic acid into a four-neck flask equipped with a stirrer, thermometer and reflux condensing device, then add 856.3g solvent acetone, and feed nitrogen for 4min , and then heated to 40°C, with a stirring rate of 400rpm; after complete dissolution, the temperature was raised to 80°C, and the stirring rate was adjusted to 520rpm, and the heating switch was turned off after 3 hours of reaction, and the mixture solution was obtained after cooling to room temperature;

[0037] (2) Install the water separator on the above-mentioned four-necked flask, and then configure 1.2mol sodium bisulfite into an aqueous solution with a mass concentration of 40% and add it to the four-necked flask, install a reflux device, heat to 120°C, and stir The speed is 450rpm, the power is turned off after 5 hours of reaction, and the mixture is...

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Abstract

The invention discloses a high-efficiency thick oil washing agent and a preparation method thereof. According to the oil washing agent, maleic anhydride and ethylene glycol are subjected to esterification reaction under the action of a p-toluenesulfonic acid catalyst, and then the product and sodium hydrogen sulfite are subjected to sulfonation reaction, so that the oil washing agent is obtained.The molar ratio of the maleic anhydride to the ethylene glycol to the sodium hydrogen sulfite is 1:(0.5-0.7):(1.1-1.3) and is preferably 1:0.55:1.16. The high-efficiency thick oil washing agent is high in salt resistance, and the mineralization resistance is 200000 mg/L or above. The high-efficiency thick oil washing agent has the advantages of being low in consumption and high in oil washing efficiency. When the use concentration is 1000 ppm, the static oil washing rate of simulated oil sand can reach 80% or above. Therefore, the oil washing agent can be widely applied to an oil washing testof thick oil.

Description

technical field [0001] The invention relates to a small molecular compound capable of stripping and emulsifying heavy oil during the development of heavy oil, in particular to a high-efficiency oil washing agent for heavy oil. Background technique [0002] According to the data released by the National Energy Administration, even in 2015, when energy supply and demand were relatively loose and energy consumption shifted to slow down, my country's apparent oil consumption still reached 543 million tons, and its import volume was nearly 330 million tons. Breaking through 60% for the first time, reaching 60.6%. Obviously, in order to ensure my country's oil security, in addition to intensifying exploration efforts to find new oil reserves, constructing strategic measures for oil reserves in line with national conditions, and taking measures such as using the oil futures market to avoid import risks, we will greatly tap the potential to increase the potential of various developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C07C303/32C07C309/17
CPCC07C309/17C09K8/584
Inventor 明晨王征韩曦王淦勋于成龙焦英杨旭徐剑飞玉耀乔荟宁赵慧莹
Owner 烟台索山机械有限公司
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