Independent pressure match and design fracture composite modeling study evaluating Hallux Mannanase HT enzyme breaker against conventional oxidizer breakers in the Niobrara C. A calibrated fracture model was developed from actual production data with 4.9 years of history match, then used to forecast performance across four completion designs comparing Liberty and Halliburton fluid systems — incorporating independent regained proppant pack permeability testing and rheology properties into all modeling.
The Niobrara analog well was completed using 100% slickwater HVFR with AP oxidizer breaker at 1,945 lbm/ft proppant loading. Post-job production history match (PHM), forecasting, and discrete fracture network (DFN) pressure match modeling was conducted to calibrate a fracture model from the well's actual production data. The calibrated model was confirmed within 2% of actual production after 4.9 years.
Using that calibrated model, four completion designs were developed — comparing the current slickwater design (Design 1) against hybrid SW/LIN/XL fluid systems using Hallux Mannanase HT enzyme breaker with both Liberty and Halliburton fluid systems. Designs also evaluated 34–48% reduction in clean water volume.
Independent Regained Conductivity Testing:
Oxidative Breaker (commodity chemical): 0.508 mD-ft regain conductivity
Hallux Mannanase HT (Patented): 90–100% Proppant Pack Clean-Up
Regained proppant pack permeability testing results and rheology properties of the Mannanase HT enzyme breakers were incorporated into all the modeling.
Not all enzymes are created equally. Designs utilizing Hallux Mannanase HT enzyme breaker delivered 35–48% more production at 1 year compared to the slickwater baseline — with regained fracture conductivities of 1.28–1.73 mD-ft versus 0.51 mD-ft for the oxidizer design, while reducing clean water volume by 34–48%. At current gas prices, this translates to $1.4–1.9 million per year in additional revenue per well.
Production forecasts show 35–48% production uplifts at 1 year when using Hallux Mannanase HT enzyme breaker compared to the slickwater baseline completion.
Clean water volume reduction range of 34–48% when transitioning from slickwater to hybrid gel systems.
Production forecast shows Designs 2, 3, and 4 with the best performance using hybrid fluid systems with MHT enzyme breaker. Design 4 shows the strongest result with 47.7% production uplift at 1 year using a Halliburton SW/20#LIN/20#XL hybrid system. Liberty fluid system (Design 2) displayed greater conductivity than Halliburton at the same gel loading.
| Model Run | Design 1 (Baseline) | Design 2 | Design 3 | Design 4 |
|---|---|---|---|---|
| Pump Schedule | SW (Liberty) | Hybrid (Liberty) | Hybrid (Halliburton) | Hybrid (Halliburton) |
| Fluid 1 | Slickwater | Slickwater | Slickwater | Slickwater |
| Fluid 2 | — | 15# LIN+MHT | 15# LIN+MHT | 20# LIN+MHT |
| Fluid 3 | — | 15# XL+MHT | 15# XL+MHT | 20# XL+MHT |
| Breaker Type | Oxidizer | Hallux Mannanase HT | Hallux Mannanase HT | Hallux Mannanase HT |
| Total Fracture Height, ft | 331 | 334 | 327 | 304 |
| Propped Height, ft | 132 | 193 | 194 | 160 |
| Created Frac Half-Length, ft | 598 | 359 | 384 | 353 |
| Propped Frac Half-Length, ft | 185 | 134 | 137 | 136 |
| Avg Hydraulic Frac Width, ft | 0.059 | 0.134 | 0.110 | 0.143 |
| Base Frac Conductivity, mD-ft | 0.254 | 0.756 | 0.640 | 0.865 |
| Regain Frac Conductivity, mD-ft | 0.508 | 1.510 | 1.280 | 1.731 |
| 1-year EUR, Bscf | 1.3 | 1.8 | 1.8 | 1.9 |
| 5-year EUR, Bscf | 3.8 | 4.5 | 4.4 | 4.6 |
| 10-year EUR, Bscf | 5.1 | 5.8 | 5.7 | 5.9 |
| 1-year Uplift | SW Baseline | 40.8% | 34.9% | 47.7% |
Analog Pressure Match — Baseline analog used for calibration to measured pressure and proppant response. Propped height 132 ft, propped half-length 185 ft, regain conductivity 0.508 mD-ft. Confirmed within 2% of actual production after 4.9 years.
Mannanase HT enzyme designs (D2–D4) show 35–48% production uplift at 1 year versus the slickwater baseline. Toggle to Revenue to see the incremental value at current EIA gas prices.