Preparation method and application of multifunctional polyamine amide for oil field
A polyamine amide, multi-functional technology, applied in the field of polyamine amide, can solve the problems of easy gelation or carbon deposition, low polarity of the alkyl main chain, weak effect, etc., to reduce thermal stability and inhibit the growth of crystals. The effect of large and low impact
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Embodiment 1
[0014] A preparation method for multifunctional polyamide for oil field, comprising the following steps:
[0015] The first step is to dissolve the long-chain fatty amides prepared from natural oils and polyethylene polyamines in an organic solvent with 10 times the mass in a container. The natural oils are soybean oil, and the polyethylene polyamines are of industrial grade and above purity Diethylenetriamine, the organic solvent is toluene above chemical purity,
[0016] In the second step, add a cross-linking agent to the container under stirring, the amount of the cross-linking agent added is 0.5 times of the amount of the diethylenetriamine substance, and the cross-linking agent is paraformaldehyde of industrial grade and above purity,
[0017] In the third step, the reactants in the container were stirred and heated at 100°C for 4 hours, cooled to room temperature,
[0018] In the fourth step, the organic solvent in the light yellow solution obtained in the container is...
Embodiment 2
[0021] A preparation method for multifunctional polyamide for oil field, comprising the following steps:
[0022] The first step is to dissolve the long-chain fatty amides prepared from natural oils and polyethylene polyamines in an organic solvent with 10 times the mass in a container. The natural oils are rapeseed oil, and the polyethylene polyamines are of industrial grade and above purity triethylenetetramine, the organic solvent is xylene above chemical purity,
[0023] In the second step, add a crosslinking agent to the container under stirring, the amount of the crosslinking agent added is 0.5 times the amount of the triethylenetetramine substance, and the crosslinking agent is hexamethylenetetramine of industrial grade and above purity,
[0024] In the third step, the reactants in the container were stirred and heated at 120°C for 4 hours, and then cooled to room temperature.
[0025] In the fourth step, the organic solvent in the light yellow solution obtained in the...
Embodiment 3
[0028] A preparation method for multifunctional polyamide for oil field, comprising the following steps:
[0029] The first step is to dissolve the long-chain fatty amides prepared from natural oils and polyethylene polyamines in an organic solvent with 20 times the mass in a container. The natural oils are soybean oil, and the polyethylene polyamines are industrial grade and above purity Tetraethylenepentamine, the organic solvent is cyclohexane above chemical purity,
[0030] In the second step, under stirring, a cross-linking agent is added to the container, and the amount of the cross-linking agent added is 0.6 times that of the tetraethylenepentamine substance, and the cross-linking agent is n-butyraldehyde of industrial grade and above purity,
[0031] In the third step, the reactants in the container were stirred and heated at 60°C for 4 hours, then cooled to room temperature,
[0032] In the fourth step, the organic solvent in the light yellow solution obtained in the...
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