Method and apparatus for precise control of wellbore fluid flow

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United States of America Patent

PATENT NO 8757272
APP PUB NO 20120067591A1
SERIAL NO

12884288

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Abstract

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A method for controlling flow of fluid from an annular space in a wellbore includes changing a flow restriction in a fluid flow discharge line from the wellbore annular space. The flow restriction is changed at a rate related to a difference between at least one of a selected fluid flow rate out of the wellbore and an actual fluid flow rate out of the wellbore, and a selected fluid pressure in the annular space and an actual pressure in the annular space.

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Patent Owner(s)

  • SMITH INTERNATIONAL, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Couturier, Yawan Katy, US 13 100
Reitsma, Donald G Katy, US 12 282
Sehsah, Ossama R Katy, US 48 176

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