Self-suspension proppant and preparation method thereof
A proppant and self-suspension technology, applied in chemical instruments and methods, earth square drilling, mining fluids, etc., can solve problems such as easy consolidation of products, increased viscosity of aqueous solution, and influence on settlement time, etc., to achieve good viscosity increase Effect, good self-suspension ability, effect of good suspension ability
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[0039] Example 1:
[0040] Coupling agent alcohol solution preparation: Measure 900 mL of absolute ethanol, 50 g of isobutyl trimethoxysilane, and 10 mL of hydrolysis accelerator acetic acid, stir at 400r / min for 10 minutes, and then set aside.
[0041] Water-soluble viscosity-increasing polymer emulsion preparation: Weigh 250g polyethyl acrylate (weight average molecular weight 3 million, Mw / Mn 2.56) polymer material, 10g emulsifier OP-10, measure 30mL acetic acid as a hydrolysis promoter Pour into 1500mL water in turn, stir at 1000r / min for 10 minutes, and then set aside.
[0042] Preparation of self-suspension proppant: Weigh a certain amount of 50kg ceramsite proppant (40-70 mesh in size) and put it into the fluidized bed; turn on the fan and heating device of the fluidized bed, the air volume of the fan can make the fluidized bed The proppant is kept fully boiling and flowing, and the hot air temperature is set to 150°C; when the temperature in the bed is constant, the prepared...
Example Embodiment
[0044] Example 2 (comparative):
[0045] The preparation of the water-soluble viscosity-increasing polymer emulsion is the same as in Example 1.
[0046] Preparation of self-suspending proppant: Weigh a certain amount of 50kg ceramsite proppant (particle size 40-70 mesh) and put it into a container for later use; add the prepared viscosity-increasing polymer emulsion into the container, stir evenly, and combine the resulting mixture After natural drying, sieving is obtained from the suspended proppant. See Table 1 and Table 2 for the test data of self-suspension and temperature resistance.
[0047] Table 1 Suspension capacity of self-suspending proppant
[0048]
[0049] Table 2 Temperature resistance test of self-suspension proppant (100℃)
[0050]
Example Embodiment
[0051] Example 3:
[0052] Coupling agent alcohol solution preparation: Measure 1700 mL of absolute ethanol, 100 g of dodecyltrimethoxysilane, and 50 mL of acetic acid, stir at 400r / min for 10 minutes, and then set aside.
[0053] Water-soluble viscosity-increasing polymer emulsion preparation: weigh 300g of poly-2-acrylamido-2-methyl-propane sulfonate (weight average molecular weight 6 million, Mw / Mn 1.75) polymer materials, emulsifier OP-10 20g, weigh 50mL acetic acid hydrolysis accelerator, pour into 2000mL water in turn, stir at 1000r / min for 10 minutes, and then set aside.
[0054] Preparation of self-suspension proppant: Weigh a certain amount of 50kg ceramsite proppant (40-70 mesh in size) and put it into the fluidized bed; turn on the fan and heating device of the fluidized bed, the air volume of the fan can make the fluidized bed The proppant is kept fully boiling and flowing, and the hot air temperature is set to 150°C; when the temperature in the bed is constant, the prep...
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