Pre-coated resin sand

I.e., the catalyst was added to the resin formulation, or after replacement of the outer liquid mortar curing agents, to promote pre-coated gravel stratum at low temperature curing to achieve the Maide Ceramics purpose of the formation of solid rubber, and high temperature coating includes two types of sand. The former is used well temperature 60 ℃ wells, which is used to steam injection thermal recovery wells (steam injection temperature 300 ~ 350 ℃). In recent years, with the progress of technology has developed a low-temperature coated sand (for oil temperature 30 ~ 50 ℃).
(1) at room temperature coated sand: its resin formulations are: quartz sand: Epoxy resin: acetone: coupling = 100:5:5.5:0.2 (mass fraction).
(2) high temperature coated sand: sand control mechanism which is used to heat the pre-coating of gravel sand sand-carrying ceramic ball fluid at a certain ratio, the column is pumped through underground construction, and forced to squeeze into the outer casing surrounding formations in the well bottom temperature or curing a specific external conditions, the formation of an artificial wall with a certain intensity, but also has a high permeability thereby preventing the formation of sand.