Oil Drilling Grade CMC/PAC: CMC/PAC is a high-purity, high-efficiency slurrying agent. It has strong salt resistance and temperature tolerance, compatible with sea water and saturated brine. It helps stabilize soft soil structure, prevent collapse of wall of a well. It can improve mud-making volum, reduce filteration loss.It can improve drilling speed and oil Production rate.

 

CMC和PAC types effect in the mud（ * mean degree）

	Amount of fluid loss	Thickening	Shale inhibition
PAC-HV	****	****	****
PAC-LV	****	**	***
CMC-HV	**	**	**
CMC-LV	**	*	*

 

Indicator	Viscosity 600r/min data			Filtration rate (ml)
	Distilled water	4% salt water	saturated brine
CMC-LV	≤90	—	—	≤10
CMC-HV	≥30	≥30	≥30	≤10

 

Indicator	2ppb		3ppb		4ppb
	API loss (ml)	YP (Pa)	API loss (ml)	YP (Pa)	API loss (ml)	YP (Pa)
PAC-HV	≤20	≥2.4	≤15	≥9.6	≤10	≥19.2
PAC-LV	≤25	≥0.5	≤15	≥0.5	≤10	≥0.5