Baker Hughes Corporation

Floyd A Halbardier, Deceased

Rustom K Mody

An inflatable packing element for an inflatable packer or bridge plug utilized in subterranean wells comprises a tubular elastomeric sleeve which is surrounded by a plurality of circumferentially overlapping flexible metal ribs. The opposite ends of the ribs are respectively welded to an external surface provided on a force transmitting sleeve. The sleeve is provided with a shoulder having an abutting relationship with an internally projecting shoulder provided on the tubular mounting structure for the inflatable element.

Inflatable packing element

An apparatus is provided for running in, actuating, and retrieving an inflatable packer or bridge plug of the type which may be passed through a small diameter tubing, sealed against a large diameter well casing by passing fluid to the packer through a remedial tubing to inflate an elastomeric packing element, and then be retrieved to the surface through the small diameter tubing by deflating the elastomeric packing element. Circulation may be maintained during run-in through an open port in a centralizer member provided on the bottom of the packer or bridge plug. If the device is used as a bridge plug, the open port is closed by a sleeve valve which in turn is actuated by a secondary mandrel extending to the top of the tool for removal by wireline. Removal of the secondary mandrel prior to deflation opens a second port in the centralizing member providing equalization of pressure above and below the inflated elastomeric element. The primary mandrel of the tool is positively secured to the body of the tool by a collet which is released by upward movement of a connector device which has a lost motion connection with the primary mandrel.

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Pasadena, TX, United States of America

Floyd A Halbardier, Deceased