Managing equivalent circulating density during a wellbore operation

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United States of America Patent

PATENT NO 11466523
APP PUB NO 20190048672A1
SERIAL NO

16078623

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Abstract

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The equivalent circulating density (“ECD”) in a wellbore may be managed during a wellbore operation using ECD models that take into account the rheology of the wellbore fluid and the rotational speed of tubulars in the wellbore. For example, a method may include rotating a rotating tubular in a stationary conduit while flowing a fluid through an annulus between the rotating tubular and the stationary conduit; calculating an equivalent circulating density (“ECD”) of the fluid where a calculated viscosity of the fluid is based on an ECD model ?_eff=f(? ?_eff)*h(Re), wherein ?_eff is the viscosity of the fluid, ? ?_eff is an effective shear rate of the fluid, and Re is a Reynold's number for the fluid for the rotational speed of the rotating tubular; and changing an operational parameter of the wellbore operation to maintain or change the ECD of the fluid.

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kulkarni, Sandeep D Kingwood, US 33 517
Lopes, Pereira Vitor The Woodlands, US 7 5
Singh, John Paul Bir Kingwood, US 48 79
Yerubandi, Krishna Babu Houston, US 24 43

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