General Electric Company

Baker Hughes Oilfield Operations LLC

Matthew Landon George

Jeffrey Potts

Dewey Lavonne Parkey, Jr

Jeffrey Robert Potts

Mahendra L Joshi

Dustin Michael Sharber

Qi Xuele

Lily Nuryaningsih

Jr Parkey Dewey Lavonne

Dewey Lavonne Parkey

A perforation blocking sleeve is provided for use in well restimulation, the perforation blocking sleeve having a first anchoring device and one or more expandable members secured to an outer surface of the perforation blocking sleeve. The first anchoring device may be used to secure the perforation blocking sleeve over a perforation cluster within a perforated well casing. The perforation blocking sleeve defines a flow channel and may be remotely and individually uncoupled from a running tool. The perforation blocking sleeve flow channel is sized such that the running tool and a running tool driver are retractable through the flow channel of the perforation blocking sleeve. In one or more embodiments, the perforation blocking sleeve contains an organic polymeric material which expands on contact with a production fluid or an exogenous fluid introduced into the well.

Perforation blocking sleeve for well restimulation

A well bore robot is configured to travel along an magnetic track element. The magnetic track element includes a plurality of track magnets. The well bore robot includes a robot body and at least one robot magnet. The robot magnet is disposed within the robot body and configured to magnetically and alternatingly engage and disengage with the track magnets. Alternating engagement and disengagement of the robot magnet with the track magnets conveys the well bore robot along the magnetic track element.

Electromagnetic well bore robot conveyance system

A downhole assembly is provided for use in well restimulation, the assembly having a plurality of perforation blocking sleeves each comprising an anchoring device; one or more expandable members secured to an external surface of each of the perforation blocking sleeves; a running tool for transporting the plurality of perforation blocking sleeves and expandable members within a perforated well casing; a running tool driver for moving the running tool, perforation blocking sleeves and expandable members within the well casing; and one or more sensors to detect perforation clusters within the well casing. The anchoring device is used to secure each sleeve over a perforation cluster within the well casing. Each perforation blocking sleeve defines a flow channel in fluid communication with the principal flow channel of the well casing. The running tool is remotely uncoupled from the blocking sleeves in sequence, and the running tool and the running tool driver are retractable through the flow channel of each the perforation blocking sleeves.

Well restimulation downhole assembly

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Oklahoma City, OK, United States of America

Matthew Landon George