Methods of preparation of a oil field drilling mud water - loss control additive with waste PAN fiber hydrolyzed at high pressure had been studied and had tested its properties.
研究了用废腈纶经高压釜中水解制备油田钻井泥浆降失水剂的方法，并进行了性能试验。
2
For the scattered small oil field drillingwaste water is low, with these devices is a waste, especially in bad road condition.
对于分散的小油田，钻井废水产生量低，配备这些设备是一种浪费，尤其是路况不好的油田。
3
The waste water from well drilling and other operations has imposed difficulty in oil field waste water treatment.