Combination gravel packing device and method

Patent · Tue Sep 17 04:00:00 EDT 1985

OSTI ID:5944912

Salerni, J V; Zachman, J R

An apparatus for gravel packing a screen positioned adjacent the casing perforations of a subterranean well incorporates an annular sealing surface immediately above the gravel pack screen. A flapper valve is mounted for movement about a horizontal pivot axis into engagement with the annular valve seat. The flapper valve and the cooperating valve seat are both provided with spherical segment sealing surfaces so as to prevent leakage through the valve due to any misalignment of the pivot axis of the flapper valve with respect to the annular valve seat. With this apparatus, the withdrawal of the gravel packing apparatus at the completion of the gravel packing operations prevents the entry of undesired fluids and contaminates into the producing formation.

• Assignee: Baker Oil Tools Inc.
• Patent Number(s): US 4541484
• OSTI ID: 5944912
• 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
DESIGN
EQUIPMENT
FLOW REGULATORS
GRANULAR MATERIALS
MATERIALS
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
OPENINGS
OPERATION
PACKINGS
SCREENS
SEALS
VALVES
WELLS