Perforating gun for initiation of shooting from bottom to top

Patent · Tue Feb 03 04:00:00 EST 1987

OSTI ID:6904530

Wetzel, R J

A perforating gun is described for an elongated production formation of a subterranean well, comprising: shaped charge containers, each container having a primer containing end; carrier means for mounting the containers in vertically and angularly spaced relation with all the primer containing ends disposed substantially the same radial distance from the well axis; and a fusible guide tube coaxially located in the well and defining a continuous axial passage adjacent the primer ends of the shaped charge containers. It also comprises continuous length of high detonating energy primer cored extending through the continuous axial passage; length of low detonating energy fusible cord also extending through the continuous axial passage, and firing mechanism at the top of the fusible guide tube for detonating the fusible cord, and a booster charge operatively connected to the bottom ends of the primer cord and the fusible cord, whereby the primer cord is detonated from the bottom up, thereby melting the fusible guide tube and firing the shaped charges in succession from the lowermost one upwardly.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4640370
• OSTI ID: 6904530
• 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
ELONGATION
EXPLOSIVES
GUNS
INCIDENCE ANGLE
MELTING
NATURAL GAS WELLS
OIL WELLS
PERFORATION
PHASE TRANSFORMATIONS
SPACE DEPENDENCE
TUBES
WELLS