Wattenberg Produced Water Rates - DCN SGE00724.A11



### Attachment 11: Wattenberg Flowback Recovery and Long-term Produced Water Rates Last updated: 3/31/2015 Source: SGE00501 Notes: Reference did not provide equation to estimate flowback rates for vertical wells. 4,626 0.5 0.8 3.4 N/A 0.3 0.7 1.5 Flowback in First 30 Days (bbls): **Horizontal Summary of Wastewater Generation** 10th percentile LTPW water rate (bpd):

Median LTPW rate (bpd): 10th percentile LTPW water rate (bpd):

Median LTPW rate (bpd): 90th percentile LTPW water rate (bpd):

90th percentile LTPW water rate (bpd): **Vertical Summary of Wastewater Generation** Flowback in First 30 Days (bbls):Wattenberg Produced Water Rates - DCN SGE00724.A11



### Wattenberg Produced Water Data Source: SGE00501 Notes:

**Flowback (bpd)**  **LTPW**

**(bpd) Flowback (bpd)** **LTPW (bpd)**  0 0.00 264.4 -- Not calculated -- 1 0.00 253.3 -- Not calculated -- 2 0.01 242.6 -- Not calculated -- 3 0.01 232.4 -- Not calculated -- 4 0.01 222.6 -- Not calculated -- 5 0.01 213.2 -- Not calculated -- 6 0.02 204.3 -- Not calculated -- 7 0.02 195.7 -- Not calculated -- 8 0.02 187.4 -- Not calculated -- 9 0.02 179.6 -- Not calculated -- 10 0.03 172.0 -- Not calculated -- 11 0.03 164.8 -- Not calculated -- 12 0.03 157.8 -- Not calculated -- 13 0.04 151.2 -- Not calculated -- 14 0.04 144.8 -- Not calculated -- 15 0.04 138.7 -- Not calculated -- 16 0.04 132.9 -- Not calculated -- 17 0.05 127.3 -- Not calculated -- 18 0.05 121.9 -- Not calculated -- 19 0.05 116.8 -- Not calculated -- 20 0.05 111.9 -- Not calculated -- 21 0.06 107.2 -- Not calculated -- 22 0.06 102.7 -- Not calculated -- 23 0.06 98.3 -- Not calculated -- 24 0.07 94.2 -- Not calculated -- 25 0.07 90.2 -- Not calculated -- 26 0.07 86.4 -- Not calculated -- 27 0.07 82.8 -- Not calculated -- 28 0.08 79.3 -- Not calculated -- 29 0.08 76.0 -- Not calculated -- 30 0.08 72.8 -- Not calculated -- 31 0.08 69.7 -- Not calculated -- 32 0.09 66.8 -- Not calculated -- Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates are calculated using Equation 3 in SGE00501 which is valid for the remaining life of the well. Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; therefore, ERG did not calculate flowback rates for vertical wells.

**Horizontal Well Vertical Well**  **Days Years**  Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that the flow rates are equal to those presented in Figure 5.Wattenberg Produced Water Rates - DCN SGE00724.A11



### Wattenberg Produced Water Data Source: SGE00501 Notes:

**Flowback (bpd)**  **LTPW**

**(bpd) Flowback (bpd)** **LTPW (bpd)**  Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates are calculated using Equation 3 in SGE00501 which is valid for the remaining life of the well. Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; therefore, ERG did not calculate flowback rates for vertical wells.

**Horizontal Well Vertical Well**  **Days Years**  Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that the flow rates are equal to those presented in Figure 5.

33 0.09 64.0 -- Not calculated -- 34 0.09 61.3 -- Not calculated -- 35 0.10 58.7 -- Not calculated -- 36 0.10 56.2 -- Not calculated -- 37 0.10 53.9 -- Not calculated -- 38 0.10 51.6 -- Not calculated -- 39 0.11 49.4 -- Not calculated -- 40 0.11 47.3 -- Not calculated -- 41 0.11 45.4 -- Not calculated -- 42 0.12 43.4 -- Not calculated -- 43 0.12 41.6 -- Not calculated -- 44 0.12 39.9 -- Not calculated -- 45 0.12 38.2 -- Not calculated -- 46 0.13 36.6 -- Not calculated -- 47 0.13 35.0 -- Not calculated -- 48 0.13 33.6 -- Not calculated -- 49 0.13 32.2 -- Not calculated -- 50 0.14 30.8 -- Not calculated -- 51 0.14 29.5 -- Not calculated -- 52 0.14 28.3 -- Not calculated -- 53 0.15 27.1 -- Not calculated -- 54 0.15 25.9 -- Not calculated -- 55 0.15 24.8 -- Not calculated -- 56 0.15 23.8 -- Not calculated -- 57 0.16 22.8 -- Not calculated -- 58 0.16 21.8 -- Not calculated -- 59 0.16 20.9 -- Not calculated -- 60 0.16 20.0 -- Not calculated -- 61 0.17 19.2 -- Not calculated -- 90 0.25 -- 17.7Not calculated 1.9 181 0.50 -- 9.8Not calculated 1.8 273 0.75 -- 6.7Not calculated 1.8 364 1.00 -- 5.1Not calculated 1.7Wattenberg Produced Water Rates - DCN SGE00724.A11



### Wattenberg Produced Water Data Source: SGE00501 Notes:

**Flowback (bpd)**  **LTPW**

**(bpd) Flowback (bpd)** **LTPW (bpd)**  Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates are calculated using Equation 3 in SGE00501 which is valid for the remaining life of the well. Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; therefore, ERG did not calculate flowback rates for vertical wells.

**Horizontal Well Vertical Well**  **Days Years**  Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that the flow rates are equal to those presented in Figure 5.

455 1.25 -- 4.2Not calculated 1.6 546 1.50 -- 3.5Not calculated 1.6 638 1.75 -- 3.0Not calculated 1.5 729 2.00 -- 2.6Not calculated 1.4 820 2.25 -- 2.4Not calculated 1.4 911 2.50 -- 2.1Not calculated 1.3 1,003 2.75 -- 1.9Not calculated 1.3 1,094 3.00 -- 1.8Not calculated 1.2 1,185 3.25 -- 1.6Not calculated 1.2 1,276 3.50 -- 1.5Not calculated 1.1 1,368 3.75 -- 1.4Not calculated 1.1 1,459 4.00 -- 1.3Not calculated 1.0 1,550 4.25 -- 1.3Not calculated 1.0 1,641 4.50 -- 1.2Not calculated 1.0 1,733 4.75 -- 1.1Not calculated 0.9 1,824 5.00 -- 1.1Not calculated 0.9 1,915 5.25 -- 1.0Not calculated 0.8 2,006 5.50 -- 1.0Not calculated 0.8 2,098 5.75 -- 0.9Not calculated 0.8 2,189 6.00 -- 0.9Not calculated 0.8 2,280 6.25 -- 0.9Not calculated 0.7 2,371 6.50 -- 0.8Not calculated 0.7 2,463 6.75 -- 0.8Not calculated 0.7 2,554 7.00 -- 0.8Not calculated 0.6 2,645 7.25 -- 0.7Not calculated 0.6 2,736 7.50 -- 0.7Not calculated 0.6 2,828 7.75 -- 0.7Not calculated 0.6 2,919 8.00 -- 0.7Not calculated 0.5 3,010 8.25 -- 0.7Not calculated 0.5 3,101 8.50 -- 0.6Not calculated 0.5 3,193 8.75 -- 0.6Not calculated 0.5 3,284 9.00 -- 0.6Not calculated 0.5 3,375 9.25 -- 0.6Not calculated 0.4Wattenberg Produced Water Rates - DCN SGE00724.A11



### Wattenberg Produced Water Data Source: SGE00501 Notes:

**Flowback (bpd)**  **LTPW**

**(bpd) Flowback (bpd)** **LTPW (bpd)**  Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates are calculated using Equation 3 in SGE00501 which is valid for the remaining life of the well. Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; therefore, ERG did not calculate flowback rates for vertical wells.

**Horizontal Well Vertical Well**  **Days Years**  Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that the flow rates are equal to those presented in Figure 5.

3,466 9.50 -- 0.6Not calculated 0.4 3,558 9.75 -- 0.6Not calculated 0.4 3,649 10.00 -- 0.5Not calculated 0.4 3,740 10.25 -- 0.5Not calculated 0.4 3,831 10.50 -- 0.5Not calculated 0.4 3,923 10.75 -- 0.5Not calculated 0.3 4,014 11.00 -- 0.5Not calculated 0.3 4,105 11.25 -- 0.5Not calculated 0.3 4,196 11.50 -- 0.5Not calculated 0.3 4,288 11.75 -- 0.5Not calculated 0.3 4,379 12.00 -- 0.5Not calculated 0.3 4,470 12.25 -- 0.4Not calculated 0.3 4,561 12.50 -- 0.4Not calculated 0.3 4,653 12.75 -- 0.4Not calculated 0.3 4,744 13.00 -- 0.4Not calculated 0.2Wattenberg Produced Water Rates - DCN SGE00724.A11

Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that theWattenberg Produced Water Rates - DCN SGE00724.A11

Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that theWattenberg Produced Water Rates - DCN SGE00724.A11

Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that theWattenberg Produced Water Rates - DCN SGE00724.A11

Horizontal wells: Flowback rates are calculated using Equation 2 in SGE00501 and is valid through the first 61 days of production. LTPW rates Vertical wells: LTPW rates are calculated using Equation 1 in SGE00501. Bai did not provide an equation for flowback rates from vertical wells; Bai indicates a timeframe of years and the equation calculates barrels per year. ERG used days instead for this analysis and ensured that the