DESCRIPTION
Fracsal IV crosslinking
additive consists of a specifically sized, sparingly-soluble borate
crosslinking agent suspended in an extremely low aromatic content
carrier fluid. A standard concentration for Fracsal IV is 1.0 gal per 1,000 gal
of fracturing fluid with crosslink times ranging from 6 to 9.5
minutes depending upon the pH, temperature, and type of
polymer-based fracturing fluid system. Fracsal IV packaging can be
customized to meet specific requirements.
PHYSICAL PROPERTIES AND ENVIRONMENTAL DATA
| Appearance: |
Tan Liquid
|
Specific Gravity:
|
1.15 - 1.20 |
Pour Point, ASTM D97:
|
-26.7°C (-16°F) |
| Flash Point, ASTM D93: |
79.4°C (175°F) |
Solubility:
|
Dispersible in Water |
| LC50, 96-hour: |
353,600
|
| Chemical Oxygen Demand: |
33 mg/L |
| Biological Oxygen Demand: |
13 mg/L |
| D50 - Microtox Testing: |
|
Test
|
EC20
|
EC50
|
PASS/FAIL
|
|
MTX - Threshold
MTX - Confirmation
@ 228 L/m3
|
83 L/m3 (78 - 89)
32% (20 - 51)
|
250 L/m3 (246 -
263)
>91%
|
not applicable
PASS
|
CROSSLINK TIMES AT VARIOUS pH VALUES
|
pH
|
7.6
|
8.6
|
9.6
|
10.6
|
|
Static Top, min:sec
|
7:07
|
6:32
|
5:58
|
9:2
|
| TEST
PARAMETERS |
| Guar Base: |
2% KCl |
| Polymer Concentration: |
40 lb/1,000 gal |
| pH, adjusted with NaOH: |
7.6 - 10.6 |
| Temperature: |
24.4°C (76°F) |
| Viscosity, 300 rpm: |
37 cP |
|
PATENT PENDING
|
|