To overcome these limitations, immersed lamp position type photocatalytic reactor is recommended for increasing perforation depth of UV light (Anju et al. 2012; Bouanimba et al. 2015).
Table 3 Properties of equipment in perforation operation Perforation Depth 14,222 14,271 ft. Liner size 7 inch Perforation string 3 ½ inch Inclination 90 degree Applied pressure 1200 psia Tubing 3 * 2 7/8 inch Pressure in test pipe 1000 psia Pressure in annulus 2000 psia Choke size 32/64 inch.
Different segments have different characteristic parameters: the perforation density, n p(i); the perforation depth, l p; bore diameter, D p; phase angle ω; and the initial perforation angle ω 0. The heel end is selected as the origin of this coordinate, and the x direction is parallel with the wellbore.
The effects of the parameters of the plate thickness, hole diameter, perforation ratio, cavity depth, and damping on the sound absorption capabilities are described.
The evaluation was focused on the correct centering of the targeted site, the presence or absence of perforation, the drilling depth, the deviation of the vestibulolingual direction relative to a reference axis on the control model, the deviation of the mesiodistal direction relative to a reference axis on the control model, the global drilling time.
the correct centering of the targeted site, the presence or absence of perforation, the drilling depth, the deviation of the vestibulolingual direction relative to a reference axis on the control model, the deviation of the mesiodistal direction relative to a reference axis on the control model, the global drilling time.
The intrinsic thermal neutron detection efficiency depends upon many factors, including the perforation geometry, size, and depth.
Parametric analysis with different longitudinal and shear rebar ratios is then performed to investigate their influence on the penetration depth and perforation thickness of RC panels and to derive the modified empirical formulas.
Most existing empirical formulas available in the current literature do not take into account the effect of reinforcement in predicting penetration depth and perforation thickness of reinforced concrete (RC) panels subjected to impact loads.
It is shown that the proposed formulas accurately predict the penetration depth and perforation thickness of the RC panels subjected to the impact with velocities in the range of 50 m/s–250 m/s.
The equivalent thickness calculation equation is based on regression analysis of a large number of finite element simulation results of elastic local buckling strength of perforated plates under compression, considering the effects of a number of different design variables such as plate depth, thickness, perforation patterns and dimensions of the plate.
