Calcium carbonate Supplier and Manufacturer

Calcium carbonate


Description

Calcium carbonate (CaCO3 )is an acid‐soluble, bridging and weighting agentusedin drilling, drill in and workover/completion fluids. Calcium carbonate is available in four grind sizes: Fine (F), Medium (M), Coarse (C) and Micronized (Mc).


Characteristic and property

Physical ppearance....................................................................................White powder
Specific gravity..........................................................................................................2.7‐2.8
Solubility in water @ 212°F (100°C)..............................................................................Minimal (0.0035 g/100 mL)
Solubility in 15% HCl.................................................................................................>98% at 76°F (24.4°C) 
Moisture Content at...................................................................................................2.0( Maximum). 

Applications

Calcium carbonate is an acid soluble bridging and weighting agent for controlling fluid loss and density. It can be used in fluids ranging from conventional oil base and water‐base drilling fluids. As a bridging agent and fluid loss additive, normal concentrations are in the 10 to 50 lb/bbl (29 to 143 kg/m3) range. Calcium carbonate F (fine) is used as the standard weighting material. Calcium carbonate M (medium) and calcium carbonate C (coarse) are used for bridging and seepage control or can be used as a weight material with a larger particle size. The amount of calcium carbonate required to increase the mud density can be calculated with the following formulas: 

Calcium carbonate, lb/bbl = 980 (w2 – w1) 
23.3 – w2
Where:

w1 = Initial mud weight in lb/gal
w2 = Desired mud weight in lb/gal
Calcium carbonate, kg/m3 = 2,800 (w2 – w1)
2.8 – w2

Where: 

w1 = Initial mud weight in specific gravity
w2 = Desired mud weight in specific gravity

Calcium carbonate M and calcium carbonate C are generally used in fluid‐loss‐control situations requiring a larger particle size than calcium carbonate F. They are often used in lost circulation and fluid‐loss pills, with concentrations from 30 to 50 lb/bbl (86 to 143 kg/m3), to bridge highly permeable or fractured zones. Calcium carbonate can also be added on a periodic basis for seepage control to limit losses (lost circulation and leak off) to high permeability formations. It is particularly effective when drilling with high differential pressures caused by an overbalanced condition or when drilling depleted zones. Treatments range from 2 to 10 sacks per hour when used as a preventative measure. For depleted zone drilling applications, calcium carbonate is most effective when used in combination with a cellulose product. 

Advantages

Acid‐soluble product which minimizes formation damage
Available in Fine (F), Medium (M), Coarse (C), and Micronized (Mc) grades, allowing the most appropriate particle size to be used
Effective bridging agent, essentially inert and relatively insoluble, having a minimum effect on fluid properties
Fine and medium grades that pass through most fine mesh shale shaker screens
Less viscosity and gels required for suspension than other weighting additives


Toxicity and Handling

Bioassay information is available upon request. 
Handle as an industrial chemical, wearing protective equipment and observing the precautions described in the Material Safety Data Sheet (MSDS). 


Packaging and Storage

Calcium carbonate F, M, C and Mc are packaged in 50‐lb (22.7‐kg), and 55‐ and 110‐lb (25‐ and 50‐kg) multi‐wall, paper sacks. Store in a tightly closed, original container in a dry, cool and well‐ventilated place.

This material is supplied solely for informational purposes and UNIVERSAL makes no guarantees or warranties, either expressed or implied, with respect to the accuracy or use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale.

Our Products