Spraberry Independent Study
Production Enhancement Study:
• Post-job production history match (PHM), forecasting and discrete fracture network (DFN) pressure match (PM) fracture modeling was conducted for wells in several Basins (DJ, Williston, Midland and East Texas) to evaluate as-pumped created and propped fracture geometry in order to develop a calibrated fracture model to evaluate designs ranging from Slickwater to Hybrids and compare the resulting Production Uplifts, as well as Potential Reduction of Clean Frac Volume. The pump schedule, included slickwater (SW), linear gel (LN), and crosslinked gel (XL) using a Oxidative breakers or Hallux Mannanase HT Enzyme breaker as shown in Table 1. The conductivity indicated by the wells production history match was defined as the baseline for the oxidizing breaker. Regained proppant pack permeability testing results and rheology properties of the Mannanase HT enzyme breakers were incorporated into all the modeling.
Independent Regained Conductivity Testing shows:
•Oxidative Breaker (commodity chemical): 30-40% Proppant Pack Clean-Up
•Hallux Mannanase HT (US Patents #10,227,523 and 11,401,457, and 12,227,695): 90-100% Proppant Pack Clean-Up
Pressure Match & Design Fracture Composite Results:
•Production Forecasts show a range of 24.3 to 74.2% production uplifts when using Hallux Mannanase HT (Enzyme breaker) compared to the Oxidizing breakers used in typical designs
•Clean Water Volume Reduction range of 23 to 46% when adjusting pump schedules/frac designs as suggested
Pressure Match & Design Fracture Composite Model Report
Midland Basin – Spraberry
Fracture Model Plots
Design 1 (Analog Pressure Match) - Slickwater baseline with propped height 253 ft, propped half-length 226 ft, and regained conductivity 0.49 mD-ft. Established oxidizer control with limited fracture conductivity and negligible uplift.
Design 2 - 8# linear gel design using Hallux Mannanase HT enzyme breaker. Propped height 294 ft, propped half-length 199 ft, and regained conductivity 0.84 mD-ft. Demonstrated +24% uplift at 1 year and +18% uplift at 2 years versus the slickwater analogue.
Design 3 - Hybrid linear-crosslink design using Hallux Mannanase HT enzyme breaker. Propped height 218 ft, propped half-length 176 ft, and regained conductivity 1.93 mD-ft. Achieved +62% uplift at 1 year and +43% uplift at 2 years, confirming strong fracture cleanup.
Design 4 - Hybrid slickwater-linear-crosslink design using the Hallux Mannanase HT enzyme breaker. Propped height 148 ft, propped half-length 173 ft, and regained conductivity 1.87 mD-ft. Delivered +60% uplift at 1 year and +43% uplift at 2 years with improved cleanup.
Design 5 - Hybrid slickwater-linear-crosslink design using Hallux Mannanase HT enzyme breaker with elevated proppant loading. Propped height 156 ft, propped half-length 193 ft, and regained conductivity 1.98 mD-ft. Produced the strongest overall response +65% uplift at 1 year and +46% uplift at 2 years, the highest among all test cases.
Production Forecast
Cumulative production comparison showing performance of all fluid systems relative to the slickwater baseline. Hallux Mannanase HT enzyme designs achieved 24–65% uplift at 1 year, equating to an additional $2.1–$5.5 MM annual revenue increase at $85/bbl oil.