Fracsal Ultra EM is formulated as three separate products, Fracsal Ultra EM1, Fracsal Ultra EM2, and Fracsal Ultra EM3, each product with a different crosslink time. The Fracsal Ultra EM series consists of a specially sized, sparingly-soluble borate crosslinking agent suspended in an aqueous crosslink modifier solution. Fracsal Ultra EM series contains a solubilized alkaline salt modifier which is capable of adjusting the rate at which gelation of organic polymer occurs, without substantially altering the final pH or other characteristics of the crosslinked system. Typical usage concentrations for all Fracsal Ultra EM products is from 1 to 3 gal per 1,000 gal of fracturing fluid with crosslink times ranging from 45 seconds to 3 minutes depending upon the pH, temperature, and type of polymer-based fracturing fluid system. Fracsal Ultra EM packaging can be customized to meet specific requirements.
| Appearance: | Tan Liquid |
| Specific Gravity: | 1.2 - 1.3 g/mL |
| Pour Point, ASTM D97: | 3°C (37.4°F) |
| Solubility: | Water |
| LC50, 96-hour: | 1,000,000 ppm |
| Chemical Oxygen Demand: | 55.2 mg/L |
| Biological Oxygen Demand: | <2.9 mg/L |
| BTEX, S.W. 8260: | Below detection limit of 1 ppb |
| D50 - Microtox Testing: |
| Test | EC20 | EC50 | PASS/FAIL | |
|---|---|---|---|---|
| MTX - Threshold MTX - Confirmation @ 68 L/m3 | 17 L/m3 (<14 - 30) 62% (CNC) | 68 L/m3 (44 - <91) <91% (56 - >91) | not applicable PASS | |
|
Product |
pH |
||||
|---|---|---|---|---|---|
| 7.5 | 8.5 | 9.5 | 10.5 | 11.5 | |
| Fracsal Ultra EM1 | 2:00 | 1:20 | 0:59 | 1:18 | 2:53 |
| Fracsal Ultra EM2 | 1:34 | 1:19 | 0:53 | 1:13 | 2:21 |
| Fracsal Ultra EM3 | 1:14 | 1:02 | 0:48 | 1:09 | 1:27 |
| Guar Base: | 2% KCl |
| Polymer Concentration: | 40 lb/1,000 gal |
| pH: | 7.5 - 11.5 |
| Viscosity, 300 rpm: | 38 - 42 cP |
| Crosslinking Additive Concentration: | 1.2 gal/1,000 gal |
| Temperature: | 25°C (77°F) |
| Guar Base: | Water |
| Clay Stabilizer: | 1 gal/1,000 gal |
| pH, adjusted with KOH: | 11.7 |
| Viscosity, 300 rpm: | 10 - 25 cP |
| Fracsal Ultra EM2: | 3 gal/1,000 gal |
| Temperature: | 93.3°C (200°F) |
| Pressure: | 400 psi |
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