Fracturing fluid as well as preparation method and application thereof
A fracturing fluid and surfactant technology, which is applied in the preparation of sugar derivatives, chemical instruments and methods, earth drilling and mining, etc., can solve the problems of underground reservoir damage, inability to prevent and reduce dust, and poor shear resistance. Achieve the effect of protecting the health, reducing coal dust output, and good wetting and softening performance
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Embodiment 1
[0051] Step 1. Preparation of intermediate: lauryl glucoside and mesitylene acid molar ratio of 1: 1 of water was added to the three-necked flask equipped with a thermometer and a stirring device, wherein the molar ratio of water is lauryl glucoside 500: 1, mixing uniformly, 0.5mol ferrous sulfate as a catalyst was added, sonication was mixed well 1h, then N 2 95 deg.] C under a protective reaction 3h, then transferred into petroleum ether, washed, filtered and dried to give a pale yellow powder - the intermediate product (formula III);
[0052] The reaction procedure is as follows:
[0053]
[0054] Step 2. Preparation of Surfactant: Intermediate molar ratio: dimethylamine oleic acid: hydrochloric acid = 1: 1: 1 was added to a molar ratio of 1: 1 ethyl acetate solution, wherein the intermediate product the molar ratio of ethyl acetate = 1: 10, mixing, seal, for 18h at 85 ℃, after adding an appropriate amount of potassium hydroxide to adjust the pH 6-7, and finally evaporated un...
Embodiment 2
[0059] Step 1. Preparation of intermediates: The lauryl glucoside, mesitylene and benzoic acid at a molar ratio of 2: 1: 1 of water was added to the three-necked flask equipped with a thermometer and a stirring device, wherein the water with sodium lauryl glucoside molar ratio of 500: 1, mixing uniformly, 0.5mol ferrous sulfate as a catalyst was added, sonication was mixed well 1h, then N 2 95 deg.] C under a protective reaction 3h, then transferred into petroleum ether, washed, filtered and dried to give a pale yellow powder - the intermediate product (a mixture of Formula III and Formula IV);
[0060] The reaction procedure is as follows:
[0061]
[0062] Step 2. Preparation of Surfactant: Intermediate molar ratio: dimethylamine oleic acid: hydrochloric acid = 1: 1: 1 was added to a molar ratio of 1: 1 ethyl acetate solution, wherein the intermediate product the molar ratio of ethyl acetate = 1: 10, mixing, seal, for 18h at 85 ℃, after adding an appropriate amount of potassiu...
Embodiment 3
[0067] Step 1. Preparation of intermediates: The lauryl glucoside and p-acid molar ratio of 1: 1 of water was added to the three-necked flask equipped with a thermometer and a stirring device, wherein the molar ratio of water lauryl glucoside 500 : 1, mixed, 0.5mol ferrous sulfate as a catalyst was added, sonication was mixed well 1h, then N 2 95 deg.] C under a protective reaction 3h, then transferred into petroleum ether, washed, filtered and dried to give a pale yellow powder - an intermediate product (Formula IV);
[0068] The reaction procedure is as follows:
[0069]
[0070] Step 2. Preparation of Surfactant: Intermediate molar ratio: dimethylamine oleic acid: hydrochloric acid = 1: 1: 1 was added to a molar ratio of 1: 1 ethyl acetate solution, wherein the intermediate product the molar ratio of ethyl acetate = 1: 10, mixing, seal, for 18h at 85 ℃, after adding an appropriate amount of potassium hydroxide to adjust the pH 6-7, and finally evaporated under reduced pressur...
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