Method and apparatus for initiating subterranean well perforating gun firing from bottom to top

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6469274

Stout, G W

This patent describes a perforating gun for a subterranean well, comprising: an elongated tubular carrier insertable in the well and defining a chamber normally sealed from entry of well fluids; shaped charge containers transversely mounted in the carrier chamber in vertically spaced relation, each of the shaped charge containers having a primer end and a discharge end; a firing mechanism including a primer charge disposed above the shaped charge containers; a booster charge disposed below the shaped charge containers in the bottom of the chamber to be rendered inoperable by well fluids entering the chamber; primer cord means for detonating the shaped charges extending upwardly from the booster charge to pass adjacent all primer ends of the shaped charge containers; and means responsive to detonation of the primer charge for detonating the bottom booster charge to ignite the primer cord means to successively fire the shaped charges from the bottom of the gun upwardly to the top. The method is also described of detonating vertically spaced shaped charges of a perforating gun for a subterranean well.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4657089
• OSTI ID: 6469274
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTAINERS
DETONATIONS
EXPLOSIVES
FLUIDS
GUNS
HOISTING
IGNITION
MATERIALS HANDLING
NATURAL GAS WELLS
OIL WELLS
PERFORATION
RESERVOIR FLUIDS
SEALS
SPACE DEPENDENCE
WELLS