Tubing packer

Patent · Tue Jun 07 04:00:00 EDT 1988

OSTI ID:6915698

Cassity, T G

A downhole tubing packer is described comprising a sleeve having an internal recess, external annular grooves, lands between the external annular grooves and internal multiple camming surfaces, means closing the internal recess to provide an annular space within the sleeve, a piston movably positioned within the annular space, the piston having external multiple camming surfaces coacting with the internal multiple camming surfaces of the sleeve, and means for delivering fluid under pressure to one end of the annular space for movement of the piston therein, movement of the piston responsive to fluid pressure forcing the sleeve outward into tight sealing and gripping engagement with the interior surface of a string against which it is to seal with the lands between the sleeve grooves digging into such interior surface.

• Assignee: Cameron Iron Works USA, Inc., Houston, TX
• Patent Number(s): US 4749035
• OSTI ID: 6915698
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PACKINGS
PIPES
PISTONS
SLEEVES
TOOLS
TUBES
WELL COMPLETION
WELLS