Self-suspended proppant
A technology of proppant and curing agent, which is applied in the direction of production fluid, wellbore/well components, drilling composition, etc., and can solve the problems of low production efficiency of resin pellets, reducing the settling rate of proppant, and restricting the popularization of use. It achieves the effects of eliminating liquid preparation process and equipment, wide application temperature range and high sand carrying capacity
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Embodiment 1
[0036] A self-suspending proppant, including aggregate and a film layer wrapped outside the aggregate, the film layer includes an inner film layer and an outer film layer, and the outer film layer is formed by an outer layer resin, an outer layer catalyst, and an outer layer curing agent , the inner film layer is generated by the first resin and the first curing agent. The specific mass parts of the above raw materials are as follows: 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, amine 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. In this exa...
Embodiment 2
[0045] A self-suspending proppant, comprising aggregate and a film layer wrapped outside the aggregate, the film layer includes an inner film layer and an outer film layer, and the outer film layer is composed of an outer layer resin, an outer layer catalyst, an outer layer curing agent and The amine compound is formed, and the inner film layer is formed by the first resin and the first curing agent. The specific parts by mass of the above raw materials are as follows: 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, amine 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 ...
Embodiment 3
[0053] A self-suspending proppant, comprising aggregate and a film layer wrapped outside the aggregate, the film layer includes an inner film layer and an outer film layer, and the outer film layer is composed of an outer layer resin, an outer layer catalyst, an outer layer curing agent and The amine compound is formed, and the inner film layer is formed by the first resin and the first curing agent. The parts by mass of the above raw materials are as follows: 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, amine 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 us...
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