Implementation methods of frac sand fracturing process uses sand

Implementation methods of frac sand fracturing process uses sand the ends off the frac sand technology uses one thousand EMU will viscosity frac sand fluid and filling gravel unconsolidated sandstone formations by significantly higher absorption capacity of displacement, high resin coated silica sand ratio, high pump pressure the laminated crack wide open after a short and filled with a lot of gravel, sand forming the ends off, then the inner tube empty gravel loop filling. Short wide gravel filling cracks frac sand the formation of dense, clogged with pollution through the bottom of the well, and makes unconsolidated sandstone oil flow pattern by radial natural gas fracturing becomes linear pre-construction flow, greatly reducing bottomhole producing pressure drop and liquid flow rate reduce output fluid carrying sand on the formation and to control sand production and enhance near-wellbore reservoir flow capacity, with a significant increase yield and reduce the heavy oil thermal recovery steam injection pressure effect, the combined effect of good shale gas. frac sand fracturing and gravel packing involves two processes, from the program points, there are two steps to complete the process and the completion of a string method.Two-step method is the complete frac sand and gravel packing twice the construction is completed, the completion of the so-called first column refers to the use of gravel packing method of construction prior to the formation frac sand string filled, and then the gravel screen casing annulus filled within , once construction is completed by two processes trip string.