不同来源煤炭腐植酸对钻井液性能的影响

Influence of Humic Acid from Different Kinds of Coals on Drilling Fluid Properties

对不同来源煤炭腐植酸的抗温、抗盐、磺化性能等进行了室内研究，结果表明抗温性能为风化煤＞褐煤＞泥炭，而褐煤及泥炭的抗盐、磺化性能优于风化煤。风化煤经降解活化后可进行接枝等深加工改性。煤中的非腐植酸组份在一定范围内对改善钻井液性能有益而无害。

The temperature- resistance, salt - resistance and sulfnating properties of humic acidfrom different kinds of coals for drilling fluid are studied in laboratory.The results show that the temperature-resistance property is arranged in the order of: weathered coal, lignite and peat; and the salt - resistance andsulfonating properties of lignite and peat are better than weathered coal. Weathered coal which has been de-graded and actived may be processed further such as graft modification. The non - humic acid components incoal will be helpful and no flarmful in improving the performance of drilling fluid.