CHROME FREE WATER-BASED WELLBORE FLUID

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United States of America Patent

APP PUB NO 20110180256A1
SERIAL NO

13122604

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Abstract

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Methods for maintaining the rheology and reducing the fluid loss of chrome-free, aqueous-based wellbore fluids under high temperature-high pressure conditions are disclosed. The method may comprise formulating the chrome-free, aqueous wellbore fluid with an aqueous base fluid, at least one chrome-free viscosifier, at least one chrome-free fluid loss control additive, at least one chrome-free dispersant; and circulating the chrome-free aqueous-based wellbore fluid in a wellbore at temperatures exceeding 300° F.

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Patent Owner(s)

Patent OwnerAddress
M-I L L C5950 NORTH COURSE DRIVE HOUSTON TX 77072

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fernandez, Jorge Houston, US 19 45
Gerrard, Donna Aberdeen, GB 2 6
Tehrani, Ahmadi Kincardineshire, GB 5 70
Young, Steven Cypress, US 61 815

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