BIONIC SHALE INHIBITOR AND PREPARATION METHOD THEREOF AND DRILLING FLUID
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United States of America Patent
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Aug 11, 2016
app pub date -
Oct 8, 2015
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Feb 6, 2015
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Abstract
The present invention discloses a bionic shale inhibitor, consisting of structural units denoted by formula (1) and structural units denoted by formula (2), wherein, the molar ratio of the structural units denoted by formula (1) to the structural units denoted by formula (2) is 0.2-6:1, and the weight-average molecular weight of the shale inhibitor is 800-4,000 g/mol. The present invention further provides a method for preparation of a bionic shale inhibitor. The present invention further provides a drilling fluid containing the bionic shale inhibitor. The bionic shale inhibitor disclosed in the present invention has high shale inhibition capability, and is environment-friendly and pollution-free.
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