Dissolvable time delay firing head and method
AssigneeGeodynamics, Inc.
InventorMichael D. Wroblicky
Life of this patent
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Abstract
A firing head configured to initiate the firing of an element in a perforating gun. The firing head includes an insert having a bore extending along a longitudinal direction X; a percussion detonator facing the bore and including an explosive material that is configured to detonate; a firing pin located partially in the bore; and a retention mechanism located on the firing pin and preventing the firing pin to move along the longitudinal direction X into the bore. The retention mechanism includes a degradable material that is configured to chemically react with a well fluid so that the retention mechanism degrades until freeing the firing pin so that the firing pin moves along the longitudinal direction X into the bore and strikes the percussion detonator.
Claims9
A firing head configured to initiate the firing of an element in a perforating gun, the firing head comprising:
- an insert having a bore extending along a longitudinal direction X;
- a percussion detonator facing the bore and including an explosive material that is configured to detonate;
- a firing pin located partially in the bore;
- and
- a retention mechanism located on the firing pin and preventing the firing pin to move along the longitudinal direction X into the bore,
- wherein the retention mechanism includes a degradable material that is configured to chemically react with a well fluid so that the retention mechanism degrades until freeing the firing pin so that the firing pin moves along the longitudinal direction X into the bore and strikes the percussion detonator.
Dependencies are inferred from the claim text.