Exxonmobil Upstream Research Company

Rasgas Company Limited

Dennis H Petrie

Pavlin B Entchev

Randy C Tolman

Kevin H Searles

Renzo Moises Angeles Boza

Abdel Wadood M El-Rabaa

David A Baker

William A Sorem

John K Montgomery

Larry Mercer

Zhihua Wang

Renzo M Angeles Boza

Abdel Wadood Mohammed El-Rabaa

Autonomous units and methods for downhole, multi-zone perforation and fracture stimulation for hydrocarbon production. The autonomous unit may be a perforating gun assembly, a bridge plug assembly, or fracturing plug assembly. The autonomous units are dimensioned and arranged to be deployed within a wellbore without an electric wireline. The autonomous units may be fabricated from a friable material so as to self-destruct upon receiving a signal. The autonomous units include a position locator for sensing the presence of objects along the wellbore and generating depth signals in response. The autonomous units also include an on-board controller for processing the depth signals and for activating an actuatable tool at a zone of interest.

Assembly and method for multi-zone fracture stimulation of a reservoir using autonomous tubular units

A bridge plug arrangement includes a plug having an upper end and a bottom end. The bridge plug arrangement also optionally includes a cylindrical seat. The bridge plug arrangement further includes a tubular member. The tubular member may be part of a casing string. The tubular member is configured to receive the plug and, when used, the seat. The plug and/or the seat may be fabricated from a frangible material. Also disclosed is a method for diverting fluids in a wellbore using the bridge plug arrangement. The method may include landing the plug onto the seat within the wellbore below a subsurface zone of interest. Treatment fluids are then injected into the wellbore, where they are diverted through perforations and into a formation. The plug and/or seat is then optionally broken into a plurality of pieces through use of a downward mechanical force.

Systems and methods of diverting fluids in a wellbore using destructible plugs

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Sugar Land, TX, United States of America

Dennis H Petrie