Crts, Inc.

Michael E O'Neill

David Paulley

John D Lindemann

Russell M Langley

John D Carter

Keith R Roberts

Darrell Davis

James A Huggins

Dale G Davis

Steve D Hayes

There is provided herein an electrical robotic system for locating, cleaning, and repairing holidays within coated pipe that are proximate to a girth weld. In a preferred arrangement, a robotic train will be placed in the pipeline that will perform the functions of holiday location, cleaning/preparation of the surface containing the holiday, and repair thereof, in a single run through the pipeline.

Pipeline internal field joint cleaning, coating, and inspection robot

There is provided herein a robot-based electrical system for locating holidays within coated pipe that does not utilize a grounding wire. In a preferred arrangement, the robot will carry a metal rotating brush/capacitive pad combination and changes in the capacitance in the brush/pad circuit will be used to identify imperfections in the interior coating of the pipe and especially those located proximate a girth weld. In another preferred embodiment, a circumferential brush will be used that allows testing of the integrity of the internal coating throughout the length of the pipe as the robot travels the pipeline.

Internal pipe coating inspection robot

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Tulsa, OK, United States of America

Michael E O'Neill