Halliburton Energy Services, Inc.

Robert Albers

Jason Karl Cook

Method and apparatus are presented for perforating a subterranean formation so as to establish fluid communication between the formation and a wellbore by perforating a tubular with a mechanical perforator. The mechanical perforator comprises a perforator housing, a mandrel slidably positioned within the perforator housing, and at least one penetrator outwardly extendable from the perforator housing. When shifted axially the mandrel causes at least a portion of the at least one penetrator to extend outwardly from the perforator housing to perforate the tubular.

Apparatus and method for perforating a subterranean formation

Methods and apparatus are presented for mechanically perforating a tubular positioned in a subterranean wellbore. A plurality of punch members are moved radially outward in response to hydraulic pressure from the tubing or other source into contact with the tubular. Retraction of the punch members is by biasing member or change in hydraulic pressure. A slip assembly, also hydraulically actuated, secures the tool in position during use.

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Waxahachie, TX, United States of America

Robert Albers