Gravel pack completion for in situ leach wells

Patent · Tue May 02 04:00:00 EDT 1989

OSTI ID:5869546

Mays, W M

An apparatus is described for completing a well comprising: a perforated liner; a first check valve means connected to the lower end of the perforated liner, the first check valve means normally closed to downward flow; a second check valve means connected to the first check valve means, the second check valve normally closed to upward flow; a spacer pipe attached to the upper end of the perforated liner; and packer means on the spacer pipe; and a stinger pipe assembly comprising: a stinger pipe having a continuous bore therethrough and being of a sufficient length to extend completely through the perforated liner and both the first and second check valve means and from the lower end thereof; the first and second check valve means being held in an open position by the stinger pipe when the pipe is positioned through the check valve means and adapted to close when the stringer pipe is withdrawn therefrom; means adapted to connect the stinger pipe to a drill stem; whereby flow from the drill stem will flow through the stinger pipe and blow out below the liner; and means for releasably connecting the perforated liner assembly and the stinger pipe assembly together.

• Assignee: Everest Minerals Corp., Corpus Christi, TX
• Patent Number(s): US 4825944
• OSTI ID: 5869546
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DISSOLUTION
EQUIPMENT
FLOW REGULATORS
LEACHING
LINERS
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PIPES
RELIEF VALVES
SEPARATION PROCESSES
VALVES
WELL COMPLETION
WELLS