Solid foamed drainage agent for natural gas well and preparation method of solid foamed drainage agent
A foam drainage agent and natural gas technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of poor spontaneous foaming performance, weak methanol capacity, and non-environmental components, and achieve self-foaming Strong ability, convenient dosing, good compatibility effect
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Embodiment 1
[0022] The solid foam drainage agent of the present invention is made of the following raw materials in mass ratio: 30% of surfactant, 2% of imidazoline quaternary ammonium salt, 10% of sodium peroxide, 20% of citric acid and 38% of thiourea.
[0023] The mass percentage of each raw material in the surfactant in the solid foam drainage agent: AESA (fatty alcohol polyoxyethylene ether ammonium sulfate) 10%, lauryl dimethyl amine oxide 5%, cardamom dimethyl amine oxide 5%, AEO- 3 (fatty alcohol polyoxyethylene ether) 10%.
[0024] The concrete preparation method of solid foam drainage agent of the present invention comprises the following steps:
[0025] A. Compounding of surfactants
[0026] According to the above ratio, add the aqueous solution of lauryl dimethyl amine oxide and cardamom dimethyl amine oxide into a 500ml three-neck flask equipped with a stirrer, reflux tube, and thermometer. When the temperature rises to 80°C, add AESA and AEO-3 , stirred and heated up to 12...
Embodiment 2
[0030] The solid foam drainage agent of the present invention is made of the following raw materials in mass ratio: 28% of surfactant, 3% of imidazoline quaternary ammonium salt, 12% of sodium peroxide, 25% of citric acid and 32% of thiourea.
[0031] The mass percentage of each raw material in the surfactant in the solid foam drainage agent: AESA 10%, lauryl dimethyl amine oxide 5%, cardamom dimethyl amine oxide 5%, AEO-38%.
[0032] The concrete preparation method of solid foam drainage agent of the present invention comprises the following steps:
[0033] A. Compounding of surfactants
[0034] According to the above ratio, add the aqueous solution of lauryl dimethyl amine oxide and cardamom dimethyl amine oxide into a 500ml three-necked flask equipped with a stirrer, reflux tube, and thermometer. When the temperature rises to 100°C, add AESA and AEO-3 , stirred and heated to 120°C, refluxed at constant temperature for 1 hour, and then distilled off the water, and the compo...
Embodiment 3
[0038] The solid foam drainage agent of the present invention is made of the following raw materials in mass ratio: 28% of surfactant, 1% of imidazoline quaternary ammonium salt, 10% of sodium peroxide, 21% of citric acid and 40% of thiourea.
[0039] The mass percentage of each raw material in the surfactant in the solid foam drainage agent: AESA 15%, lauryl dimethyl amine oxide 2.5%, cardamom dimethyl amine oxide 2.5%, AEO-38%.
[0040] The concrete preparation method of solid foam drainage agent of the present invention comprises the following steps:
[0041] A. Compounding of surfactants
[0042] According to the above ratio, add the aqueous solution of lauryl dimethyl amine oxide and cardamom dimethyl amine oxide into a 500ml three-necked flask equipped with a stirrer, reflux tube, and thermometer. When the temperature rises to 90°C, add AESA and AEO-3 , stirred and heated to 120°C, refluxed at constant temperature for 1 hour, and then distilled off the water until the s...
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