Tubing head adapters with multiple back pressure valves and methods of isolating production tubing

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11473388
APP PUB NO 20220290523A1
SERIAL NO

17200069

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A wellhead may include a first back pressure valve, a second back pressure valve, and a tubing head adapter. The tubing head adapter may include a first and second back pressure valve set location that complements and engages an outer surface profile of the first and second back pressure valve, respectively. The first back pressure valve set location may be positioned below the second back pressure valve set location. A first back pressure valve receiving diameter of the first back pressure valve set location may be smaller than a second back pressure valve receiving diameter of the second back pressure valve set location. A method of isolating production tubing in fluid communication with a wellhead may include engaging a first and second back pressure valve at a first and second, respectively, back pressure valve set location of the tubing head adapter.

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Patent Owner(s)

  • SAUDI ARABIAN OIL COMPANY

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Al-Kunin, Abdullah Radi Ali Alhasa, SA 1 0

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