It is a common additive in drilling fluid. With strong anti-seep and plugging effect, acid soluble and not causing injury  

Drilling fluid super-fine calcium carbonate It is a common additive in drilling fluid. With strong anti-seep and plugging effect, acid soluble and not causing injury to reservoir, it is suitable for all kinds of drilling well systems. Technical Index Performance Index of Drilling/ Completion Fluid

	Item	Index
		Type I	Type II
Based mud	Initial loss, ml	250	250
	Filtration, ml	300	300
Add 4% of sample to basic mud	Initial loss, ml	≤5.0	≤25.0
	Filtration, ml	≤20.0	≤60.0

Physical & Chemical Properties Index

Item		Index
		Type I	Type II
Moisture, %		≤1.0	≤1.0
Density, g/cm3		2.70±0.10	2.50±0.10
Calcium carbonate content, %		≥97.0	≥97.0
Acid insoluble content, %		≤1.0	≤1.0
Granularity	Larger than 20μm	≤20.0	≤5.0
	Smaller than 2μm	≤30.0	≤40.0
	X50(median diameter), μm	4.0-10.0	2.0-4.0

Usage and Dosage When drilling to hydrocarbon reservoir or subject reservoir, directly add it in the mud according to the dosage of 4-5%, or directly add it in completion fluid. It can also be used together with other temporary plugging additives. Considerations in Package, Storage and Transportation 1. Product is packed in plastic woven bag with plastic film bag lining inside. Each bag has a net weight of 25Kg, or it is packed according to the requirement of the customers. 2. The product shall be stored in the dry environment, avoid moisture or injury to the package

Drilling fluid super-fine calcium carbonate