Open Access

Table 5

Calculation parameters.

Parameter name Value
Liquid dynamic viscosity (µ) 0.01 Pa s
Formation pressure gradient 0.96 MPa/100 m
External diameter of oil pipe column 88.9 mm
Internal diameter of oil pipe column 76 mm
Total tube column units 100
Elastic Modulus (Ε) 2.06 × 1011 Pa
Pipe density (ρ) 7846 kg/m3
Total calculation time of model 80 s
Step length 0.001 s
Spring stiffness coefficient for a single shock absorber (k) 200 N/mm
Shock absorber damping coefficient (c) 20 N  s/mm
Shock absorber mass 100 kg
External diameter of the perforation gun 73 mm
Interior diameter of the perforation gun 62 mm
Perforation gun length 3.3 m
Number of perforation gun dividing units 10
Impact load 0 N

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.