During field operation, 120m~3 clean fracture fluid was mixed with ceramic granular (3m~3 of 0.09-0.25mm and 3m~3 of 0.45-0.90mm) and pumped down the well together. Average proppant concentration was 21%.
In this paper, it is mainly introduced the principle of overpressure-protection equipment, design of its interface circuit and method of data communication between it and other instrument system in hydraulic fracturing.
The paper introduces the research of the whole block Hydraulic fracturing technique for the low permeability and sensitivity reservoir(K av<20×10 -3μm 2) in JiangSu Oilfield.
After analyzing 8 layers test data in 6 wells,we get the reservoir parameters of the nature fractured reservoir and the composite reservoir and the main fracture direction in this region.
Of 3 production wells fractured by using CJ2-3 HFF,high flow back rate of HFF of 92.9% is observed in one well without gel breaker added,the viscosity of the flown back HFF is decreased by 30.8% after 7 day standing at 30℃;
A method of estimating the change in well productivity resulting from the hydraulic fracturing of a finite reservoir, piecewise-homogeneous in the horizontal and vertical directions, with an arbitrary number of cracks is proposed.
A correction coefficient that enables these estimates to take into account the effect of capillary trapping of mud and fracturing fluid filtrate is derived [1, 2].
A method of estimating the change in well productivity resulting from the hydraulic fracturing of a finite reservoir, piecewise-homogeneous in the horizontal and vertical directions, with an arbitrary number of cracks is proposed.
The problem of hydraulic fracture crack propagation in a porous medium is studied in the approximation of small crack opening and the inertialess flow of an incompressible Newtonian hydraulic fracturing fluid inside the crack.
With the advancement of the abrasive, the silicon lattice under the abrasive surface is fractured, and then the amorphous layers are formed and propagated, which causes the subsurface damage.
The article discusses the one-dimensional problem of the displacement of a liquid (petroleum), saturating a fractured porous medium, by another liquid miscible with it in all ratios, in a gravity field.