20/40 US Silica White™

DESCRIPTION

This Northern White monocrystalline alpha-quartz proppant is derived from the St. Peter and Wonewoc formations and processed and sized at the U.S. Silica plants in Illinois and Wisconsin. The extremely durable proppant exhibits exceptional strength, integrity and purity, and will not degrade or dissolve during handling and pumping associated with normal fracturing operations.

ADVANTAGES AND BENEFITS

• Proppant specific gravity of 2.65 enables maximum suspension and lateral fracture placement • Compatible with all hydraulic fracturing chemicals • High-quality Krumbein Factors (roundness and sphericity) ensure optimum downhole porosity and permeability, and thus, conductivity • Excellent crush resistant classification or K-Value • Meets or exceeds ISO 13503-2 and API RP 19C specifications for particle distribution,

roundness and sphericity, turbidity, acid solubility and crush resistance

APPLICATIONS

• All sandstone and fractured shale formations requiring high-strength alpha-quartz proppants

• Recommended for formations with net closure stresses up to 6,000 psi

API/ISO Properties Typical

Turbidity (NTU) 10 – 110

Krumbein Shape Factors

Roundness 0.7 – 0.8

Sphericity 0.8

Bulk Density (g/cm3) 1.48 – 1.60

Bulk Density (lb/ft3) 92 – 100

Particle Density (g/cm3) 2.64 – 2.66

Particle Size Distribution Meets or Exceeds API/ISO Standards

Mean Particle Diameter (mm) 0.533 – 0.573

Median Particle Diameter (mm) 0.523 – 0.562

Solubility in 12/3 HCl/HF for 1/2 Hr @ 150°F (Weight Loss %) 0.72 – 0.76

Crush Resistance Classification (K) 6

CALL844-GOT-SAND

EMAILfracsand@ussilica.com

CONNECTwith your sales rep

Magnification ~ 12X

Sparta

Ottawa

2,000 4,000 6,000 8,000 10,000 12,000

2,000 4,000 6,000 8,000 10,000 12,000

202

Conductivity Performance Range3676

2685

1484

652

321

163

20/40 US Silica White™

US SILICAHouston281.258.2170 Fax281.752.7659

Headquarters301.682.0600 Toll Free800.243.7500 Fax301.682.0691ussilica.com

1,000

10

100

100

10

1

LONG-TERM CONDUCTIVITY* @ 2 lb/ft2, 150°F, Ohio Sandstone

LONG-TERM PERMEABILITY* @ 2 lb/ft2, 150°F, Ohio Sandstone

Closure Stress (psi)

Closure Stress (psi)

*Procedures for measuring long-term conductivity of proppants, API RP-19D and ISO 13503-5

Disclaimer: The information set forth in this Product Data Sheet represents typical properties of the product described; the information and the typical values are not specifications. U.S. Silica Company makes no representation or warranty concerning the products, expressed or implied, by this product data sheet.

Warning: The product contains respirable crystalline silica - quartz, which can cause silicosis (an occupational lung disease) and lung cancer. For detailed information on the potential health effects of respirable crystalline silica - quartz, see the U.S. Silica Company Safety Data Sheet.

©2014 U.S. Silica Company. All Rights Reserved.US

S10

2

Permeability Performance Range 150

86

40

20

11

Con

duct

ivit

y (m

illid

arcy

– fo

ot)

Perm

eabi

lity

(Dar

cy)

LONG-TERM CONDUCTIVITY

Long-term conductivity is

a measure of the hydraulic

fracture’s ability to allow flow.

It is a multiple of the

permeability of the proppant

pack in millidarcys and the

width of the proppant pack

measured in feet.

LONG-TERM PERMEABILITY

Long-term permeability is a

measure of a porous medium’s

ability to flow measured in

Darcys or fractions thereof.

It is a function of the cross-

sectional area open to flow,

the differential pressure due

to flow and the viscosity of the

flowing medium.