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High temperature resistant forming agent and preparation method thereof

A foaming agent and high temperature resistant technology, applied in the field of high temperature resistant foaming agent and its preparation, can solve the problems of inability to meet the needs of foam flooding, no foaming performance, poor thermal stability of the foaming agent, etc., achieving good foaming performance and low cost , Good foam stabilization effect

Active Publication Date: 2019-08-02
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • High temperature resistant forming agent and preparation method thereof
  • High temperature resistant forming agent and preparation method thereof
  • High temperature resistant forming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: foaming agent temperature resistance test

[0033] Prepare 1.5g of sodium methacrylate as a solution and pour it into a four-necked flask, fix the four-necked flask on an 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, and then Put on the spherical condenser and turn on the condensate switch. Dissolve 5g of 6-acrylamidocaproic acid and 3.5g of 1-acryloyloxy-2-pyrrolidone in water to form a solution, transfer it to the drip pump, and adjust the speed of the drip pump for use. 0.4g K 2 S 2 o 8 Prepare a solution and add it to the flask containing sodium methacrylsulfonate solution. When the magnetic stirrer is heated to 30°C, open the flask containing 6-acrylamidocaproic acid and 1-acryloyloxy- Switch on the drip pump of the 2-pyrrolidone mixed solution, add the mixed solution drop by drop to the flask of sodium meth...

Embodiment 2

[0035] Embodiment 2: foaming agent temperature resistance test

[0036] Prepare 1.75g ​​of sodium methacrylate as a solution and pour it 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, ensure that the bottom of the flask just touches the bottom of the oil bath, and then Put on the spherical condenser and turn on the condensate switch. Dissolve 5.5g of 6-acrylamidocaproic acid and 4g of 1-acryloyloxy-2-pyrrolidone in water to make a solution, transfer it to the drip pump, and adjust the speed of the drip pump for use. 0.4g K 2 S 2 o 8 Prepare a solution and add it to the flask containing sodium methacrylsulfonate solution. When the magnetic stirrer is heated to 30°C, open the flask containing 6-acrylamidocaproic acid and 1-acryloyloxy-2- Switch on and off the drip pump of the pyrrolidone mixed solution, add the mixed solution dropwise to the flask of sodium ...

Embodiment 3

[0041] Example 3: Foam resistant to CO 2 test

[0042] Prepare synthetic foam agent by the method of embodiment 1, quinone inhibitor can use tetrachlorobenzoquinone, and foam agent is mixed with the solution that mass concentration is 0.4%, is divided into two parts, and a part is under 50 ℃ of normal pressures in foam The foam performance test was carried out in the instrument, and another 100% volume fraction of CO was additionally fed under 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 oilfields, in particular to a high-temperature-resistant foaming agent capable of improving oilfield recovery in the environment of hot water, steam and high-temperature flue gas and a preparation method thereof. [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 enhance oil recovery, the research on tertiary oil recovery technology is very important. At present, a lot of manpower and material resources have been invested in research on tertiary oil recovery technology in China. In my country's oil fields, due to the high proportion of heavy oil, thermal oil recovery technologies in tertiary oil recovery, such as steam flooding, steam huff and puff,...

Claims

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Application Information

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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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