Calcium Carbonate

Calcium Carbonate is a compound with formula CaCO3 that occurs naturally as limestone. Ground and sized calcium carbonate is used to increase mud density to about 12 lbm/gal [1.44 kg/m3], and is preferable to barite because it is acid-soluble and can be dissolved with hydrochloric acid to clean up production zones. Its primary use today is as a bridging material in drill-in, completion and workover fluids. Sized calcium carbonate particles, along with polymers, control fluid loss in brines or drill-in, completion and workover fluids.
CaCO3 is used as a temporary plug formulated with graded granules or flakes of calcium carbonate that are generally circulated into place as slurry and allowed to settle out. Calcium carbonate plugs commonly are used to isolate lower production zones, either to enable a column of well control fluid to be placed, or to provide some protection for a lower zone while treating upper zones. Because of their high reaction rate with hydrochloric acid, calcium carbonate plugs are easily removed using common acidizing materials and equipment.

Packing: in 500 kg

PROPERTY	REQUIRED
Purity	> 98 % w/w
Density	> 2.75 s.g.
Acid solubility ( 15 % HCL at 45 c )	> 98 % w/w
Silicon	as SiO2
Moisture	< 0.05 %

PARTICLE SIZE RANGE
D10	3.5 - 4.5 micron
D50	10 - 14 micron
D90	20 -30 micron

Material Safety Data Sheet

1. Other Names	2. SAP No	3. Supplier	4. Composition
Marble	Calcite.	1001129965.	Oman Drilling Mud Products Co.LLC.
5. Appearance and odour	6. Usage	7. Physical properties at 20 C	1013 mbar
Powder or crystalline	off white	odourless.	Weighting material
9. Safety hazards	10. Safety precautions	11. Fire extinguishing agents	12. Fire fighting precautions
Fire: non-combustible	calcium oxide fumes evolved.Stability: stable under normal condition.	None	No limitations
13. Health hazards	14. First aid	15. Personal protection	16. Environmental hazards
Inhalation: slight or no effect	nuisance dust.Skin: no effect.Eyes: slight or no effect	nuisance dust.Ingestion: none.	Remove to fresh air.Wash with water
17. Environmental precautions	18. Spillage mitigation (see also 15)	19. Disposal options	20. Storage
Avoid gross contamination of soil and water.	Scoop up and collect in container	disperse.remainder with plenty of water.	Preferred: dispose of at (controlled) landfill site.Acceptable: as above.THE DISPOSAL OPTION CHOSEN MUST BE ACCEPTABLE WITHIN THE REQUIREMENTS OF OPERATIVE LEGLISATION.
21. Packing and labelling	22. Supplementary information
Multiwall sacks or big bags. UN number: Label: no label required.	Health: Safety: Environment:		undefined

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