oil and gas drilling rig

Pexoseal 571

Bio-based copolymer latex for aqueous drilling fluids

Chemistry Type: Bio-based

Function(s): Drilling Fluid Additives, Fluid Loss Control Additives

Pexoseal 571 provides fluid loss control and wellbore stability for high performance water-based drilling fluids in fresh or salt water. Designed for use in high temperature, high pressure (HTHP) environments. It offers a high tolerance salts, multivalent ions and acids.

Previously sold as GenCeal DF 8800.

Key Advantages

  • Fluid loss control and sealing latex emulsion
  • High tolerance in salts, multivalent ions and acids
  • Organic colloidal micro-particles to reduce non-productive time and improve wellbore stability
  • Plugs pores to reduce permeability of filtercake
  • Application range up to 232 °C (450 °F)
Physical Form
Average Particle Size
200 ± 30 nm
Brookfield Viscosity
<400 mPa·s (LVT #2 spindle @ 60 rpm, room temperature)
Specific Gravity
1.09 @ room temperature (RT)
Solids (by weight)
39 - 42 %
5.0 - 8.0
Mechanical Stability

Product Availability

North America, Latin America, China, Asia (excl. China, incl. India), South Pacific, EMEA (Europe, Middle East, Africa)

Contact Us for individual country availability.

Related Documents & Downloads

OMNOVA Chemical Technical Data Sheet
OMNOVA Chemical Regulatory Data Sheet
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