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DRILLING FLUID AND METHOD FOR DRILLING IN COAL-CONTAINING FORMATIONS
DRILLING FLUID AND METHOD FOR DRILLING IN COAL-CONTAINING FORMATIONS
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机译:含煤地层中的钻井液和钻井方法
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摘要
A drilling fluid and method for drilling in a coal containing formation with a mixed metal-viscosified drilling fluid including at least 0.05% calcium sulfate.
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