【摘要】 研究了改性腐殖酸钻井泥浆稀释剂的制备，探讨了改性腐殖酸的使用条件，并与目前普遍使用的钻井泥浆稀释剂铁铬木质磺酸盐等进行了对比试验。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。更多还原

【Abstract】 The preparation about thinner of modified humic acid in drilling mud was studied.The operation condition of the modified humic acid was also approached here.The test results were contrasted with Fe_Cr lignosulphonates which is commonly used now.It shows the thinner of modified humic acid to be better than Fe_Cr lignosulphonates.It is a ideal thinner for drilling mud.更多还原