Apparatus for isolating vertically spaced perforations in a well conduit

Patent · Tue Jun 06 04:00:00 EDT 1989

OSTI ID:5586465

Stone, P C; Luke, M A; Ingram, G D

This patent describes a packer for use with a well conduit defining a annular locking recess in the conduit bore at the desired packer location, comprising, in the combination: a tubular body insertable in the conduit; means on the upper end of the tubular body for connection to a tubing string; a lock support sleeve surrounding a portion of the tubular body; locking dogs radially shiftably mounted on the lock support sleeve in peripherally spaced relation; resilient means in the lock support sleeve urging the locking dogs radially outwardly to frictionally engage the bore of the conduit and to enter the conduit locking recess when aligned therewith. The tubular body has a radially enlarged external surface engagable with the locking dogs by upward movement of the tubular body relative to the lock support sleeve to secure the locking dogs in the conduit recess. J-slot and pin means operatively interconnecting the tubular body and the lock support sleeve, whereby in one angular position of the tubing string. The tubular body and the lock support sleeve are locked together for co-movement in an axial direction, and in another angular position of the tubing string. The tubular body is axially movable relative to the lock support sleeve; a radially expandable, annular packing element surrounding the tubular body below the lock support sleeve.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4836278
• OSTI ID: 5586465
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
INSTALLATION
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PERFORATION
TOOLS
WELL COMPLETION
WELLS