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




> 98 % w/w


> 2.75 s.g.

Acid solubility ( 15 % HCL at 45 c )

> 98 % w/w


as SiO2


< 0.05 %



3.5 - 4.5 micron


10 - 14 micron


20 -30 micron

Material Safety Data Sheet

1. Other Names

2. SAP No

3. Supplier

4. Composition




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


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.


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: