GR, black powder, can be fully dispersed in drilling fluids and quickly adhere to borehole and drilling device so as to reduce friction coefficient. It can be directly added into water-based completion drilling fluids and its adding volume is 1%*2%.

Its good lubricating capability helps it to be applied in complicated wells such as horizontal and directional wells. It has a strong capability of resisting salt, calcium and magnesium And it can be applied in fresh water, seawater, saturated salt water and saltwater for completion and drilling fluids.； It can be applied in super-deep wells because it can stand **0℃; It is not toxic and does not harm environment； It can match with other agents well.； Its low fluorescence helps it to be applied to detect wells.

They are packaged in a triple sack with the lined bag. Each sack is *5kg. And they shall be stored in shady, dry and place with good ventilation.

They shall be avoided to touch with eyes, skin and clothes. If touched, they shall be cleaned by a great amount of clean water. The handling method and risky data shall be referred to MSDS.