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。
It shows the thinner of modified humic acid to be better than Fe_Cr lignosulphonates. It is a ideal thinner for drilling mud.
这种稀释剂在较宽的温度范围内具有优良的稀释性能，其抗温能力和稀释效果都比铁铬木质素磺酸盐（FCLS）好。
The results show that the thinner possesses good thinning property in a large range of temperatures and can offer good resistance to high temperature and no convironment pollution.
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