Applications
Hallux Talon Mannanase is a patented enzyme (US Patent 10,227,523) custom-formulated to degrade guar (galactomannan) polymers into non-damaging components.
A unique feature of these seventh generation enzymes is that they are stable but less active under mixing conditions at ambient temperatures and are able to provide robust degradation of beta-1,4-linkages in the crosslinked guar, linear gels and hybrid gels at high temperatures through a range of pHs. These new generation recombinant enzyme breakers are produced from genes derived from thermophilic bacteria that are stable but relatively slowly reactive at the high pH and ambient temperatures at which frac fluids are mixed at the surface. However, under down-hole conditions of high temperature and pH, Hallux Talon Mannanases become maximally active and rapidly and virtually completely break any polymeric damage in the proppant pack or formation faces, thereby optimizing well productivity.
Features
High Efficiency
Enzyme complex attacks, or has an affinity toward, specific polymer linkages resulting in mono-and di-saccharides, which maximizes degradation efficiency.
Customization
Hallux Talon enzymes are custom-designed for any guar or derivatized guar polymer.
Unique Chemistry
Enzymes do not undergo chemical or structural changes during the reactions they initiate and do not produce undesirable side reactions. They have a unique property called “turn-over” number. Typical “turn-over” numbers are in excess of one million which means that more than one million linkages of polymer substrate can be cleaved per minute. A great many more can be cleaved over the “life span” of the enzyme unit.
Temperature Stability
Stable at temperatures up to 315°F (157°C). Recent advances in biotechnology allow for extreme temperature applications.
pH Stability
Effective in fluids that range in pH from 3 to 11. Recent advances in biotechnology also allow for broader pH applications.
Non-Hazardous
Produced from all natural processes.
Compatibility
Compatible with all types of formations, base waters, tubular goods and proppants (especially resin-coated proppants).
Benefits
Independent Laboratory Proppant pack testing has shown that retained conductivities approaching 100% are possible.
Independent Laboratory Regained Conductivity Testing
Generic Borate @ 250°F, 4000 psi Closure
| Liquid Flow Rate after shut-in | 0.5-2 ml/min | 2 ml/min | 2-10 ml/min | 25 ml/min | After Gas flow* |
| Hours at Closure and Temperature: 250°F | 1 hour | 5 hour | 20 hour | 25 hour | 50 hour |
| Breaker Type | |||||
| No breaker | 4.1 | 4.3 | 17.7 | 31% | |
| No breaker (repeat test) | 8.5 | 7.1 | 6.2 | 23% | |
| 0.1 ppt AP + 1 ppt Encap AP HP | 3 | 1.6 | 5.3 | 15% | |
| 2 ppt Encap AP HP | 3.6 | 6 | 10.6 | 12% | |
| 4 gpt Magnesium Peroxide | 1.4 | 1.7 | 5.1 | 8% | |
| 4 gpt Magnesium Peroxide (diesel) | 1.4 | 1.9 | 4.1 | 6% | |
| 1 gpt Calcium Peroxide | 1.6 | 1.2 | 3 | 12% | |
| 2 gpt Calcium Peroxide | 3.1 | 4.1 | 9.2 | 15% | |
| 1 gpt BASF Enzyme + 1 ppt Encap AP (200°F) | 2.5 | 9.9 | 12 | 18% | 54.5% |
| 5 ppt Vicon HT | 1.1 | 1.4 | 2.3 | 16% | |
| 5 ppt Vicon HT (repeat test) | 1.1 | 1.4 | 2.3 | 15% | |
| 10 ppt Vicon HT** | 1.2 | 3.2 | 7.3 | 31% | |
| 1 gpt Hallux Talon Mannanase HT | 16.87 | 15.4 | 12.7 | 67% | 80.4% |
Independent Laboratory Regained Conductivity Testing
Generic Borate @ 180°F and 250°F, 4000 psi Closure
| Liquid Flow Rate after shut-in | 0.5-2 ml/min | 2 ml/min | 2-10 ml/min | 25 ml/min | After Gas flow* |
| Hours at Closure and Temperature | 1 hour | 5 hour | 20 hour | 25 hour | 50 hour |
| Breaker Type | |||||
| 1 gpt Hallux Talon Mannanase HT (180°F) | 22.89 | 24.06 | 62.10% | 56.10% | 95.56% |
| 1 gpt Hallux Talon Mannanase HT (250°F) | 16.87 | 15.4 | 12.7 | 67% | 80.44% |
Applicable to a broad range of downhole temperatures.
Low and high pH stability of the enzymes permit use in all fracturing fluids, workover operations and remedial treatments.
Environmentally friendly. Enzymes do not require any special handling or disposal.
Cost effective. High retained conductivity and high regained permeability result in high productivity, which is a cost savings for the operator.
Non-corrosive to any metals which may be encountered in the well.
Highly compatible, with the only affinity toward specific linkages in the guar molecule; does not react with anything else.
Safety Precautions
Although prolonged contact and breathing can produce an irritation in sensitized people, there are no special storage, handling, toxicity or environmental precautions necessary.
Limitations
Suggested maximum temperature of 315°F (157°C).
Competitive Products
None.
Let us customize a solution for your specific needs with one of our guar enzyme products.
- GS Enzyme (Guar Specific)
- Mannanase MT
- Mannanase HT
- Mannanase Super HT
