CaCO3 25 Micron Bridging Grade

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.

Sources: OilAuthority.com

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 < 0.20 %
Moisture < 0.05 %
   
PARTICLE SIZE RANGE  
D10 8 - 14 micron
D50 20 - 30 micron
D90 45 -50 micron

Material Safety Data Sheet

1. Other Names
Marble, Calcite.

2. SAP No
1001129964.

3. Supplier
Oman Drilling Mud Products Co.LLC.

4. Composition
Single compound, purity may very.

5. Appearance and odour
Powder or crystalline, off white, odourless.

6. Usage
Weighting material, fluid loss control material.

7. Physical properties at 20 C, 1013 mbar
Density (kg/m3): 2642 (bulk). 
Boiling Point (°C): 
Melting Point (°C): 82.5 (decomposes)
Flash Point (°C):
Autoignition temp (°C):
Flammability limit (%v/v):
Rel. vapour density (air=1): 2.9
Vapour pressure (mbar):
Kinematic viscosity (mm2/s):
Solubility in water (kg/m3): slightly soluble insoluble.
pH: 
Particle size (micron): 1000-5000.

8. Important characteristics
Incompatibilities: acids, ammonium salts, aluminium, alum, fluorine, magnesium.
Occupational exposure limit TLV (ACGIH): TWA 10mg/m3 (nuisance particulates).
 

9. Safety hazards
Fire: non-combustible, calcium oxide fumes evolved.
Stability: stable under normal condition.

10. Safety precautions
None.

11. Fire extinguishing agents
No limitations.

12. Fire fighting precautions
Protective clothing.

13. Health hazards
Inhalation: slight or no effect, nuisance dust.
Skin: no effect.
Eyes: slight or no effect, nuisance dust.
Ingestion: none.

14. First aid
Remove to fresh air.
Wash with water, use soap. 
Flush with water, obtain medical attention if eye irritation persists.
Obtain medical attention.
DO NOT INDUCE VOMITING.

15. Personal protection
Normal usage: chemical mono-goggles, PVC gloves.
In the event of inhalation risk wear general purpose dust respirator NPF 7 - 10.
Spill control/clean-up: as above.
 

16. Environmental hazards
Insignificantly toxic to aquatic life.

17. Environmental precautions
Avoid gross contamination of soil and water.

18. Spillage mitigation (see also 15)
Scoop up and collect in container, disperse.
remainder with plenty of water.

19. Disposal options
Preferred: dispose of at (controlled) landfill site.
Acceptable: as above.
THE DISPOSAL OPTION CHOSEN MUST BE ACCEPTABLE WITHIN THE REQUIREMENTS OF OPERATIVE LEGLISATION.

20. Storage
Separate from acids, ammonium salts, aluminium, fluorine, magnesium, avoid dust.

21. Packing and labelling
Multiwall sacks or big bags. 
UN number: 
Label: no label required.

22. Supplementary information
Health: 
Safety: 
Environment: