Sealing apparatus

Patent · Tue May 26 00:00:00 EDT 1987

OSTI ID:6242775

Shaw, J G; Shore, J H

A sealing apparatus is described for a downhole well motor having a shaft extension projecting upwardly out of the motor housing containing the motor windings. The apparatus comprises in combination: a tubular housing surrounding the motor shaft extension and having a lower portion sealingly securable to the motor housing; the tubular housing assembly defining an annular seal mounting chamber in its upper end; a shaft seal disposed in the seal mounting chamber to prevent well fluid leaking down and the shaft into the chamber; the tubular housing assembly further defining an annular diaphragm chamber below the shaft seal mounting chamber; and a flexible annular diaphragm sealingly mounted adjacent the outer periphery of the annular diaphragm chamber, thereby defining a fluid expansion chamber with the flexible diaphragm.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4667737
• OSTI ID: 6242775
• Resource Relation: Patent File Date: Filed date 9 May 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
MOTORS
SEALS
EXPANSION
FLEXIBILITY
LEAKS
RESERVOIR FLUIDS
SHAFTS
TUBES
FLUIDS
MACHINE PARTS
MECHANICAL PROPERTIES
TENSILE PROPERTIES
WELLS
020300* - Petroleum- Drilling & Production