Halliburton Energy Services, Inc.

Raymund Meijs

Steven George Streich

Loren C Swor

Phillip M Starr

Michael L Patterson

Ruben A Alba

David Armstrong

Gary Walters

L Mark Farabee

Danny D Delozier

A bottom-up method of fracturing a multi-zone subterranean formation intersected by a wellbore that enables one zone to be fractured while at the same time flowing previously placed fracture fluid from one or more other zones back to the surface is provided. The method employs a bottom-hole assembly ('BHA') that is attached to the bottom end of a tubing string. The BHA includes a hydra jetting sub, a centralizer, a packer and valve sub. The hydra jetting sub is used to perforate and initiate the fracture in the zones of interest. The zones are fractured by pumping fracturing fluid down the annulus formed between the tubing string and the wellbore. The previously placed fracture fluid flows back to the surface through the tubing string. It enters through the valve sub in the BHA.

Fracturing method providing simultaneous flow back

A method of treating a subterranean formation surrounding a wellbore, according to which a tool inserted into the wellbore for performing a function in the wellbore is fabricated of a material that breaks up upon detonation of an explosive mounted on the tool, thus allowing the pieces of the tool to fall to the bottom of the wellbore.

Method for removing a tool from a well

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Centennial, CO, United States of America

Raymund Meijs