FRACSAL WATERBASE
DESCRIPTION

Fracsal Waterbase crosslinking additive consists of a specifically sized, sparingly-soluble borate crosslinking agent suspended an aqueous, crosslink modifier solution. The standard concentration for Fracsal Waterbase is 1 to 3 gal per 1,000 gal of fracturing fluid with crosslink times ranging from 1 to 8.5 minutes depending upon the pH, temperature, and type of polymer-based fracturing fluid system. Fracsal Waterbase packaging can be customized to meet specific requirements.

PHYSICAL PROPERTIES AND ENVIRONMENTAL DATA
Appearance: Tan Liquid
Specific Gravity: 1.26 - 1.28
Pour Point, ASTM D97: 3°C (37.4°F)
Solubility: Water
LC50, 96-hour: 1,000,000 ppm  
Chemical Oxygen Demand: 65.2 mg/L
Biological Oxygen Demand: <2.0 mg/L
BTEX, S.W. 8260: Below detection limit of 1 ppb
D50 - Microtox Testing:
Product Test EC20 EC50 PASS/FAIL
Fracsal Waterbase   MTX - Threshold MTX - Confirmation @ 145 L/m3   45 L/m3 (41 - 49)   76%  145 L/m3(63 - >191)   >91% not applicable   PASS

CROSSLINK TIMES AT VARIOUS pH VALUES

 

Product

pH

7.5

8.5

9.5

10.5

11.5

Fracsal Waterbase

4:18

2:40

1:57

2:51

7:36

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)