Method for Determining a Flow Rate of a Drilling Mud in a Subsoil Drilling System
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United States of America Patent
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Nov 23, 2023
app pub date -
May 18, 2023
filing date -
May 19, 2022
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Abstract
Method for determining a flow rate of a drilling mud in a subsoil drilling system which includes a main duct and a bypass conduit. The bypass conduit has a narrowed section. The method includes: feeding the bypass conduit with drilling mud, coming from a drilling well formed by the system and carrying drilling cuttings; coupling, to the narrowed section, a differential pressure sensor generating a first signal representative of a difference between a first pressure detected upstream or downstream of the narrowed section and a second pressure detected in the narrowed section; coupling, to the bypass conduit, a thermal dispersion sensor generating a second signal representative of a velocity of the mud; selecting, as a mud flow rate value, one of a first value calculated based on the first signal and on a density value of the mud, and a second value based on the second signal.
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