The filtrate loss controller for drilling fluid is prepared by one step method using alkaline paper making black liquor as main raw material.
以碱法造纸黑液为主要原料，经过一步合成工艺制备钻井泥浆降滤失剂。
The method realizes the preparation of the aqueous nanometer carbon black color paste by means of a sand grinding oxidation one-step method.
该方法采用砂磨氧化一步法实现水性纳米炭黑色浆的制备。
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