Well packer with internally adjustable shear release mechanism

Patent · Tue Jul 05 04:00:00 EDT 1988

OSTI ID:6818528

Jordan, Jr, H J

A well packer is described of the type used to maintain sealing integrity between inner and outer concentric conduits within a well bore, the packer including: a central mandrel having upper connecting means for connection in a string of well conduit extending to the well surface, an exterior surface, and an internal bore; an annular packing element carried about the central mandrel which is radially expandable under axial compression; a setting sleeve carried about the central mandrel, the setting sleeve being axially movable with respect to the packing element for compressing the packing element, the setting sleeve having an interior surface which is spaced-apart from the central mandrel exterior surface by an annular space; a movable piston ring located within the annular space and engaging the setting sleeve, the movable piston ring forming a sliding seal with the central mandrel exterior surface upon movement of the setting sleeve; an initially static piston ring located within the annular space, the initially static piston ring having a seal end spaced-apart from the movable piston ring, the movable piston ring and seal end, together with the interior surface of the setting sleeve and the exterior surface of the central mandrel, forming a piston chamber which communicates by means of an internal port in the central mandrel with the bore of the central mandrel.

• Assignee: Baker Hughes Inc., Houston, TX
• Patent Number(s): US 4754814
• OSTI ID: 6818528
• 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
EQUIPMENT
FASTENERS
GEARS
MACHINE PARTS
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PISTONS
SHEAR
SLEEVES
TOOLS
WELL COMPLETION
WELLS