It shows the thinner of modified humic acid to be better than Fe_Cr lignosulphonates.It is a ideal thinner for drilling mud.

• 结果表明，不论在淡水泥浆还是盐水泥浆中，改性腐殖酸的稀释效果都比铁铬木质素磺酸盐要好，是一种比较理想的钻井泥浆稀释剂。