FRACSAL ULTRA
DESCRIPTION

Fracsal Ultra crosslinking additive consists of a specifically sized, sparingly-soluble borate crosslinking agent suspended in a aqueous, crosslink modifier solution. The low pour point of the winterized Fracsal Ultra makes this product ideal for use under extreme cold conditions. The standard concentration for Fracsal Ultra is 1 to 3 gal per 1,000 gal of fracturing fluid with crosslink times ranging from 1.5 to 6.5 minutes depending upon the pH, temperature, and type of polymer-based fracturing fluid system. Fracsal Ultra packaging can be customized to meet specific requirements.

PHYSICAL PROPERTIES AND ENVIRONMENTAL DATA
Appearance: Tan Liquid
Specific Gravity: 1.4 - 1.43
Pour Point, ASTM D97: -24°C (-11.2°F)
Solubility: Water
LC50, 96-hour: 339,300 ppm
Chemical Oxygen Demand: 60 mg/L
Biological Oxygen Demand: 20 mg/L
BTEX, S.W. 8260: Below detection limit of 1 ppb
D50 - Microtox Testing:
Test EC20 EC50 PASS/FAIL
MTX - Threshold   MTX - Confirmation @ 191 L/m3 110 L/m3 (91 - 140)   >91% 210 L/m3 (180 - 250)   >91% not applicable     PASS

CROSSLINKING TIMES AT VARIOUS pH VALUES
pH 7.5 8.5 9.5 10.5 11.5
Static Top, min:sec 3:13 3:00 2:12 3:45 8:40  

CROSSLINK TIME TEST PARAMETERS
Guar Base: 2% KCl
Polymer Concentration: 40 lb/1,000 gal
pH, adjusted with NaOH: 7.5 - 11.5
Viscosity, 300 rpm: 38 - 42 cP
Crosslinking Additive Concentration: 1.2 gal/1,000 gal
Temperature: 25°C (77°F)

 

U.S. PATENT 7,018,956