Preparation method of thickening agent, thickening agent, fracturing fluid and application of fracturing fluid
A thickener and fracturing fluid technology, applied in the field of fracturing, can solve the problems of stratum environmental hazards, high toxicity of fluorine element, difficult to degrade, etc., and achieve the effects of reducing production costs, environmental protection, and easy flowback
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Embodiment 1
[0028] This embodiment provides a kind of thickener and preparation method thereof, wherein, the preparation method of this thickener comprises the following steps:
[0029] (1) Under a protective gas atmosphere of nitrogen, 3 g of pentaerythritol and 6 g of pyridine were dissolved in 50 g of chloroform to obtain a mixed solution.
[0030] (2) The above-mentioned mixed solution is subjected to magnetic stirring treatment, and at the same time, 20 g of 2-bromopropionyl bromide is slowly added to the mixed solution for sufficient reaction, and then filtered and dried to obtain a brominated precursor; wherein, the stirring of this step The temperature of the treatment was 3° C., and the rotational speed of the stirring treatment was 1000 rpm.
[0031] (3) Dissolving 8 g of the above-mentioned brominated precursor in 120 g of chloroform to obtain a chloroform solution of the brominated precursor.
[0032] (4) Carry out magnetic stirring to the chloroform solution of the above-men...
Embodiment 2
[0037] This embodiment provides a kind of thickener and preparation method thereof, wherein, the preparation method of this thickener comprises the following steps:
[0038] (1) Under a protective gas atmosphere of nitrogen, 5 g of pentaerythritol and 10 g of pyridine were dissolved in 70 g of chloroform to obtain a mixed solution.
[0039] (2) Under the protective gas atmosphere of nitrogen, the above-mentioned mixed solution was subjected to magnetic stirring treatment, and at the same time, 40 g of 2-bromopropionyl bromide was slowly added to the mixed solution to fully react, and then filtered and dried to obtain the brominated solution. body; wherein, the temperature of the stirring treatment in this step is 8° C., and the rotational speed of the stirring treatment is 1500 rpm.
[0040] (3) Under a protective gas atmosphere of nitrogen, 12 g of the above-mentioned brominated precursor was dissolved in 180 g of chloroform to obtain a chloroform solution of the brominated p...
Embodiment 3
[0047] This embodiment provides a kind of thickener and preparation method thereof, wherein, the preparation method of this thickener comprises the following steps:
[0048] (1) Under a protective gas atmosphere of nitrogen, 3 g of pentaerythritol and 6 g of pyridine were dissolved in 60 g of chloroform to obtain a mixed solution.
[0049] (2) Under the protective gas atmosphere of nitrogen, the above-mentioned mixed solution was subjected to magnetic stirring treatment, and at the same time, 30 g of 2-bromopropionyl bromide was slowly added to the mixed solution to fully react, and then filtered and dried to obtain the brominated solution. body; wherein, the temperature of the stirring treatment in this step is 5° C., and the rotational speed of the stirring treatment is 1200 rpm.
[0050] (3) Under a protective gas atmosphere of nitrogen, 10 g of the above-mentioned brominated precursor was dissolved in 150 g of chloroform to obtain a chloroform solution of the brominated pr...
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