Macromolecular polymer encapsulating flocculant for drilling fluids and preparation method of encapsulating flocculant
A technology of high molecular polymer and drilling fluid, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of easy delamination and deterioration, poor salt resistance, unstable liquid emulsion type coated flocculant, etc. , to achieve the effect of reducing fluid loss and lubrication, strong emulsion stability, and improving the effect of coating inhibition
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Embodiment 1
[0029] (1) Preparation of raw materials: Under the condition that the temperature does not exceed 35°C, adjust the pH value of acrylic acid to 8.0 with 50% (wt%) sodium hydroxide to form an aqueous solution of sodium acrylate for later use, and take 2-acrylamide-2-methanol propanesulfonic acid is formulated into a 50% (wt%) aqueous solution and the pH value is adjusted to 8.0 with 50% (wt%) sodium hydroxide to form a 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution for subsequent use, and propylene Amide is prepared as a 50% (wt%) aqueous solution for subsequent use, and vinyltriethoxysilane is prepared as a 50% (wt%) aqueous solution for subsequent use;
[0030] (2) Sodium acrylate aqueous solution, 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution, 50% (wt%) acrylamide aqueous solution, 50% (wt%) vinyltriethoxysilane, 3# white Oil, two emulsifiers (5:1) SP-80, OP-10 mass ratio of 25:5:25:2.0:30:2.5:0.5 are added to the reactor;
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Embodiment 2
[0035] (1) Preparation of raw materials: Under the condition that the temperature does not exceed 35°C, adjust the pH value of acrylic acid to 8.0 with 50% (wt%) sodium hydroxide to form an aqueous solution of sodium acrylate for later use, and take 2-acrylamide-2-methanol propanesulfonic acid is formulated into a 50% (wt%) aqueous solution and the pH value is adjusted to 8.0 with 50% (wt%) sodium hydroxide to form a 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution for subsequent use, and propylene The amide is prepared as a 50% (wt%) aqueous solution for subsequent use, and the silane coupling agent is prepared as a 50% (wt%) aqueous solution for subsequent use;
[0036] (2) Sodium acrylate aqueous solution, 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution, 50% (wt%) acrylamide aqueous solution, 50% (wt%) vinyltriethoxysilane, 3# white Oil, two kinds of emulsifiers (5:1) SP-80, OP-10 are added to the reaction kettle according to the...
Embodiment 3
[0041] (1) Preparation of raw materials: Under the condition that the temperature does not exceed 35°C, adjust the pH value of acrylic acid to 8.0 with 50% (wt%) sodium hydroxide to form an aqueous solution of sodium acrylate for later use, and take 2-acrylamide-2-methanol propanesulfonic acid is formulated into a 50% (wt%) aqueous solution and the pH value is adjusted to 8.0 with 50% (wt%) sodium hydroxide to form a 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution for subsequent use, and propylene The amide is prepared as a 50% (wt%) aqueous solution for subsequent use, and the silane coupling agent is prepared as a 50% (wt%) aqueous solution for subsequent use;
[0042] (2) Sodium acrylate aqueous solution, 2-acrylamide-2-methylpropanesulfonic acid sodium salt aqueous solution, 50% (wt%) acrylamide aqueous solution, 50% (wt%) vinyltriethoxysilane, 3# white Oil, two kinds of emulsifiers (5:1) SP-80, OP-10 are added to the reaction kettle according to the...
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