二、造浆试验方法的探讨用作钻井泥浆之粘土的造浆率高低是很重要的。试验发现有些膨润土造浆率不高，即使用纯碱改为钠型膨润土后，造浆还是不高，仍小于6米~3/吨土。相反，有些非膨润土的造浆率还比它高。笔者初步分析认为，造浆率高低与粘土分散度和水化程度等有关。小于1微米以下的细颗粒越多且水化程度又好的粘土，其造浆率较高。 Second, the discussion of pulp test method Used as a drilling mud clay slurry rate is very important. Test found that some of the bentonite slurry rate is not high, even if the use of soda ash into sodium bentonite, the slurry is still not high, still less than 6 m ~ 3 / ton of soil. On the contrary, some non-bentonite slurry rate is higher than it. Preliminary analysis of the author believes that the level of pulp and clay dispersion and degree of hydration and so on. Clay with less fineness and less hydration less than 1 micron and high degree of hydration has higher rate of pulping.