The dynamic valve is used together with ISKRA (U) hydraulic firing head installed at the boom of the perforang gun to create short dynamic underbalanced condion in horizontal wells. Gun assembly is iniated by hydraulic method through casing annulus. Tubing cavity remains empty and is filled aer gun iniaon and dynamic valve opening. The valve opens under influence of gaseous products aer detonaon of gun explosives.
The dynamic valve can be used for tubing and wireline operaons with an implosion chamber at the top or at the boom of perforang gun assembly.
Parameter | Value |
---|---|
Connecng thread | Tubing 73 |
Max operang pressure, MPa | 80 |
Min operang pressure, MPa | 5 |
Outside diameter, mm | 89 |
Area of circulaon holes cm2 | 22,9 |
Number and diameter of holes, mm | 4/27 |
Max temperature, °C | 150 |
Breaking force, t, not less | 50 |
Overall dimensions (diameter x length), mm | 89 х 620 |
Product operaonal life, mes, not more | 5 |
Weight, kg | 16,9 |