Preparation method of self-suspending propping agent
A proppant and curing agent technology, applied in chemical instruments and methods, earthwork drilling, drilling composition, etc., can solve the problems of high density and poor suspension of fracturing proppant, reduce fracturing cost, stabilize The effect of good performance and cost reduction
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Embodiment 1
[0045] A preparation method of a self-suspending proppant, comprising the following steps:
[0046] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 1.8 parts of outer layer resin, 2 parts of first resin, 0.8 parts of first curing agent, 1.3 parts of outer layer curing agent, 0.005 parts of outer layer catalyst, amines Compound 0.2 parts. Among them, the aggregate is 20 / 40 quartz sand, the outer layer resin is propanol polymer, the first resin is epoxy resin, the first curing agent is T31, the outer layer curing agent is isophorone diisocyanate, and the outer layer catalyst is selected Lead isooctanoate, and triethylamine is selected as the amine compound.
[0047] (2) After heating the aggregate to 140°C, put it into the sand mixer, add the first resin, stir, and the speed of the sand mixer is 50 rpm;
[0048] (3) The temperature drops to 110°C, add the first curing agent, stir, and the speed of the sand mixer is 50 rpm;
[0049] (4) The te...
Embodiment 2
[0054] A preparation method of a self-suspending proppant, comprising the following steps:
[0055] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 1 part of outer layer resin, 1 part of first resin, 0.6 part of first curing agent, 0.8 part of outer layer curing agent, 0.008 part of outer layer catalyst, amines Compound 0.3 parts. Among them, the aggregate is 30 / 50 quartz sand, the outer layer resin is glycerol polymer, the first resin is epoxy resin, the first curing agent is 113D, and the outer layer curing agent is methylene diphenyl diisocyanate. The layer catalyst is selected from tributyltin, and the amine compound is selected from ethylenediamine.
[0056] (2) Put the aggregate into the sand mixer after heating to 120°C, add the first resin, stir for 15 seconds, and the speed of the sand mixer is 55 rpm;
[0057] (3) When the temperature drops to 100°C, add the first curing agent, stir, and the speed of the sand mixer is 55 rpm;
[0...
Embodiment 3
[0063] A preparation method of a self-suspending proppant, comprising the following steps:
[0064] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 1.2 parts of outer layer resin, 1.5 parts of first resin, 0.5 parts of first curing agent, 0.8 parts of outer layer curing agent, 0.01 part of outer layer catalyst, amines Compound 0.3 parts. Among them, 40 / 70 quartz sand is used as the aggregate, ethylene glycol polymer is used as the outer layer resin, phenolic resin is used as the first resin, hexamethylenetetramine is used as the first curing agent, toluene diisocyanate is selected as the outer layer curing agent, and toluene diisocyanate is used as the outer layer curing agent. The catalyst is tributyltin, and the amine compound is triethylenetetramine.
[0065] (2) Put the aggregate into the sand mixer after heating to 150°C, add the first resin, stir, and the speed of the sand mixer is 60 rpm;
[0066] (3) The temperature drops to 130°C, a...
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