... is an additive and expelling oil agent suitable for drilling well slurry. XANTHAN GUM OIL DRILLING GRADEYICHI OD80 ROHS,REACH,SGS ... YICHI OCD80With it's biological engineering, environmental protection functions, oil drilling grade xanthan( YICHI OD80and YICHI OCD80) is an ... stable in both acidic and alkaline solutions. When in oil drilling application, it can improve the penetration rate, keep ...