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On January 31, 2021, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at or

OilPlus™ Proppants


OilPlus Image

OilPlus™ proppants are an advanced curable resin coated fracturing sand available in 16/30, 20/40, 30/50, and 40/70 mesh sizes. OilPlus proppants are specifically designed for fracturing treatments in oil and liquid-rich reservoirs. Hexion’s unique resin coating system increases the relative permeability to oil in the proppant pack, resulting in higher oil production compared to all conventional proppant types. 

Typical Applications

Fracture treatments:     

  • At closure stress up to 8,000 psi [55 MPa] (16/30) and 10,000 psi [69 MPa] (20/40, 30/50, and 40/70)  
  • Where higher oil flow and proppant flowback control are desired

Technical Advantages and Benefits

  • Optimized well production for oil and liquid-rich reservoirs
  • Unique technology increases the relative permeability to oil in the proppant pack
  • Reduces proppant fines generation and migration
  • Helps prevent proppant flowback
  • Stress Bond™ technology helps prevent wellbore consolidation
  • Frac fluid and beaker friendly

Typical Properties

Property Standard Value Unit Test Method
Specific Volume 0.383 [0.0459], 0.391 [0.0469], 0.385 [0.0461], 0.386 [0.0463] cm³/g [gal/lb]
API Mesh Size 16/30, 20/40, 30/50, 40/70
Bulk Density 1.47 [12.3], 1.46 [12.2], 1.45 [12.1], 1.45 [12.1] g/cm³ [lb/gal]
Color brown
Compatibility Fully compatible with most commonly used fracturing fluids, both water and oil-based systems. Testing with fluids prior to pumping is advised.
Composition resin coated frac sand
Median Particle Diameter 0.9116, 0.6177, 0.4382, 0.3042 mm
Particle Size Distribution meets or exceeds API RP 19C
Physical State solid granule
Pipe Fill Factor 0.680 [0.0815], 0.685 [0.0821], 0.690 [0.0827], 0.690 [0.0827] cm³/g [gal/lb]
Resin Type thermosetting, curable
Solubility in Water, Brine & HCl nil weight %
Solubility in HCl/HF acid, API RP 19C ≤ 3 weight %
Solubility In Oil nil weight %
Specific Gravity 2.61, 2.56, 2.60, 2.59
Turbidity < 250 NTU (FTU)

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