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A kind of high temperature resistant foaming agent and preparation method thereof

A foaming agent and high-temperature-resistant technology, which is applied in the field of high-temperature-resistant foaming agent and its preparation, can solve the problems of no foam performance, cannot meet the needs of foam flooding, poor thermal stability of foaming agent, etc., and achieve low foaming performance and low cost , good foam stabilization effect

Active Publication Date: 2020-07-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Chinese patent CN201010260748.7 discloses a foam agent composition and its application, which mainly solves the poor thermal stability of the foam agent in the existing foam flooding enhanced oil recovery technology, which cannot meet the requirements of high temperature and high salinity formation foam due to the precipitation of divalent ions drive needs
Its foaming agent is resistant to high temperature, but there is no foam performance under conditions such as carbon dioxide and oxygen

Method used

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  • A kind of high temperature resistant foaming agent and preparation method thereof
  • A kind of high temperature resistant foaming agent and preparation method thereof
  • A kind of high temperature resistant foaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Foaming agent temperature resistance test

[0033] Pour 1.5 g of sodium methacrylate sulfonate into a solution into a four-necked flask, fix the four-necked flask on the iron stand, pay attention to the distance between the flask and the constant temperature magnetic stirrer, and ensure that the bottom of the flask just touches the bottom of the oil bath. Put on the spherical condenser pipe and turn on the condensate water switch. 5g of 6-acrylamidocaproic acid and 3.5g of 1-acryloyloxy-2-pyrrolidone were dissolved in water to prepare a solution and transferred to a drip pump, and the speed of the drip pump was adjusted for use. Put 0.4g K 2 S 2 O 8 It is prepared into a solution and added to the flask containing the sodium methacrylate sulfonate solution. When the magnetic stirrer is heated to 30 ° C, open the flask containing 6-acrylamidohexanoic acid and 1-acryloyloxy- The drip pump of 2-pyrrolidone mixed solution was switched on and off, and the mixed...

Embodiment 2

[0035] Example 2: Foaming agent temperature resistance test

[0036] Pour 1.75g ​​of sodium methacrylate sulfonate into a solution into a four-necked flask, fix the four-necked flask on the iron stand, pay attention to the distance between the flask and the constant temperature magnetic stirrer, and ensure that the bottom of the flask just touches the bottom of the oil bath. Put on the spherical condenser pipe and turn on the condensate water switch. 5.5g of 6-acrylamidohexanoic acid and 4g of 1-acryloyloxy-2-pyrrolidone were dissolved in water to prepare a solution and transferred to a drip pump, and the speed of the drip pump was adjusted for use. Put 0.4g K 2 S 2 O 8 It is prepared into a solution and added to the flask containing sodium methacrylate sulfonate solution. When the magnetic stirrer is heated to 30 °C, the solution containing 6-acrylamidohexanoic acid and 1-acryloyloxy-2- The drip pump of the pyrrolidone mixed solution is switched on and off, and the mixed ...

Embodiment 3

[0041] Example 3: Foaming agent is resistant to CO 2 test

[0042] The synthetic foaming agent was prepared according to the method of Example 1. The quinone polymerization inhibitor could be tetrachlorobenzoquinone. The foaming agent was prepared into a solution with a mass concentration of 0.4%, divided into two parts, and one part was foamed under normal pressure at 50°C. The foam performance test was carried out in the instrument, and the other part was additionally fed with 100% volume fraction of CO at the same temperature and pressure. 2 Gas for foam performance testing. The test results are shown in Table 2.

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Abstract

The invention provides to a high temperature resistant forming agent and a preparation method thereof, which relate to the technical field of tertiary oil recovery of an oil field. The high temperature resistant forming agent is generated through the copolymerization of 6-acrylamicarboxylic acid, sodium methallyl sulfonate and 1-acryl oxide-2-pyrrolidone. The preparation method of the high temperature resistant forming agent includes the following steps: adding the sodium methallyl sulfonate and an initiator persulfate into a flask, performing magnetic stirring, and mixing the 6-acrylamicarboxylic acid and the 1-acryl oxide-2-pyrrolidone and adding a liquid dripping pump; after the temperature rises to 30 DEG C; injecting the 6-acrylamicarboxylic acid and 1-acryl oxide-2-pyrrolidone mixture into the flask, rising the temperature to 70 DEG C, after heat preservation, and adding a quinone polymerization inhibitor and then stopping the polymerization reaction, and after the reaction is stopped for 20-60 min, cooling to room temperature, and obtaining the high temperature resistant forming agent after separation and purification. According to the invention, the oil field recovery rateis improved under the environment of hot water, steam and high temperature flue gases.

Description

technical field [0001] The invention relates to the technical field of tertiary oil recovery in oil fields, in particular to a high-temperature-resistant foaming agent and a preparation method thereof which can improve oil-field oil recovery under the environment of hot water, steam and high-temperature flue gas. [0002] technical background [0003] With the rapid development of modern industry, the consumption of energy is also increasing continuously. As one of the main energy sources, the exploitation of oil has entered the late stage of development. In order to extract more mineral oil and improve the oil recovery rate, the research of tertiary oil recovery technology is very important. At present, a lot of manpower and material resources have been invested in related research on tertiary oil recovery technology in China. In my country's oilfields, due to the high proportion of heavy oil, thermal oil recovery technologies in tertiary oil recovery, such as steam flooding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/58C08F228/02C08F220/36C09K8/588C09K8/88C09K8/94
CPCC08F220/58C09K8/588C09K8/882C09K8/94C08F228/02C08F220/36
Inventor 沙勇朱云菲周道伟蓝加洪杨杰
Owner XIAMEN UNIV
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