The antenna output power of cell phone jammer is within 30-50m

When the pressure is increased to 3,4 MPa, the effective stress decreases, the rock of crack width increases, the shielding ring formation penetrated deep mud, so the pressure is greater, the shielding ring formation is not good, even if the back row of pressure increases, the back row of the effect is still poor. The power of cell phone jammer  is dependent on the installation place.Return from temporary blocking effects and recovery rate of the whole row, when the crack width of 10? M or so, a reasonable working pressure of 2MPa. Cumulative fluid loss (ml) 1.2 1 0.8 0.6 0.4 flowback pressure is 2.0MPa pressure 3MPa flowback pressure 1.5MPa flowback pressure flowback pressure 2.1MPa 1.5MPa pressure is positive pressure 1MPa 2MPa recovery rate is pressure 4MPa recovery rate 98.16% 77.50% 50.38% recovery rate of 30.15% recovery rate 0.2 005 7.5 15 30 Time (min) 45 60 4 Conclusions (1) of the modified drilling and completion fluid system on the crack width in the 10 ~ 50? m temporary blocking of the rock sample rate at 99.35% above, back row for more than 91% recovery rate. When the rock kind of crack width and drilling and completion fluids to match the peak particle size distribution, the temporary blocking and back row effect, the formation of the shielding ring strength.The antenna output power of  cell phone jammer is within 30-50m. (2) shielding ring formation, crack - pore pressure reservoir is reasonably necessary reservoirs smaller than the pores, and the larger the crack width, the smaller the pressure required is reasonable. (3) drilling and completion operations, a positive pressure differential increases, the lower reservoir effective stress, the crack width increases, so the fracture porosity reservoirs of the temporary blocking, should consider the impact of stress sensitivity, due to increase temporarily blocked particle diameter.
Room dedicated metal steel surface anti-static shielding wall of fire double major advantages produced by Beijing Double room big advantages of metal siding very much embodied in the: room wall has many advantages, specifically as follows: a large room double steel wall plate using a hot melt oxidation resistance of galvanized steel with a combination of brand gypsum board production and processing methods, the ability to make the firewall more fire-resistant board features.The range of cell phone blocker is approximately 50m. In addition, compared with other similar products Great Firewall of double-plate light is far higher than other similar products, a large room with a double wall of anti-combustion performance to GB8624 A level, so that it can effectively avoid the occurrence of fire, better ensure the safe use of the user; room wall of the dust features are user-visible users in use in the future use can be more understanding of the function room wall of dust, in addition to shielding wall board can effectively control air cleanliness, and ease of maintenance; shield wall ability every noise, noise effect is obvious, room metal steel sandwich wall surface noise ratio up to 48dB, noise effect is obvious, soundproof room for the rare materials ; seismic pressure performance, the impact by building comprehensive experimental test after rigorous testing, the measured value of the product impact 180kgf / ㎡.