Full bore tubing hanger system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6012519
SERIAL NO

09020480

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A full bore tubing hanger system for supporting a tubing string in a wellhead includes a hanger body positioned on the wellhead and having a vertical opening therethrough defined by a plurality of spaced apart circumferential enlarged internal diameter support recesses, each support recess providing a lower circumferential radial ledge surface and an upper frusto-conically shaped surface. A tubular tubing hanger is removably positionable within the hanger body vertical opening and has threads at the lower end thereof by which tubing is attached to it. A segmented cage is positioned on the external surface of the tubing hanger and slidable between a lower and an upper position, in the lower position the segmented cage is retracted with respect to the external surface of the tubing hanger. The segmented cage has spaced apart external circumferential support surfaces that, when the tubing hanger is downwardly positioned, engage the hanger body support recesses so that the tubing hanger is supported by the cage. The segmented cage is inwardly radially retractable when upward force is applied to the tubing hanger so that the tubing hanger and cage may be removed from within the hanger body.

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Patent Owner(s)

Patent OwnerAddress
ERC INDUSTRIES INC15835 PARK TEN PLACE SUITE 115 HOUSTON TX 77084

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allen, Jack R Milan, TX 4 75
Lang, Heinrich H The Woodlands, TX 4 116

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