API13类钻井液标准1990年版中新增及修改内容摘述及与我国有关标准的对比

GENERAL DESCRIPTION OF THE ADDED AND RECTIFIED CONTENTS0FTHE199O EDITION OF API B-TYPE DRILLFLUID STANDARD AND ITS CONTRAST WITH THAT OF CHINA

对１９９０年版ＡＰＩ１３类钻井液标准的内容做了简要描述，同时与我国有关标准进行对比，对开展我国标准化工作，评价有关各类处理剂有一定的参考价值。

A brief description is given about the1990 edition of API B-type drill fluid standard Theconstrast with that of China ls also done for the ref-erence of spreading the standard works and evalua-tion of various treating agents.