Glysol® SF 400M
  • Non-polysaccharide polymeric viscosifier

DESCRIPTION

Glysol SF 400M is a high molecular weight solid polyethylene glycols which when dissolved in bromide solutions generate viscosity characteristics comparable to hydroxyethyl cellulose. Glysol SF 400M products are packaged in 50 lb or 25 kg sacks.

BASE FLUIDS

Glysol SF 400M may be utilized in zinc bromide brine.

APPLICATIONS

  • Viscosified, solids-free fluids
  • Displacement spacers

FEATURES

  • Ease of mixing without special mixing equipment or external heat source
  • Provides comparable leak-off properties to HEC in fluid loss pills
  • Stabilizes clay
  • Stable viscosities to 350°F with the addition of Glysol OS

COMPARATIVE PROPERTIES FOR GLYSOL SF 400M VERSUS HEC

PROPERTIES COMPOSITION

5 lb/bbl HEC

8 lb/bbl HEC

10 lb/bbl Glysol SF 400M

H 2 O

H 2 O

17.0 lb/gal

CaBr 2/ZnBr 2

18.0 lb/gal

CaBr 2/ZnBr 2

LSRV/0.0636 sec-1, cP

1,300

6,000

Less than 100

Less than 100

Fluid loss, sec*

35

174

117

264

* Fluid loss is recorded as the number of seconds for 350 mL of viscosified solution to pass through a 2,500 mD sandbed, 1.75 inches in depth at ambient temperature.