Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells
Abstract
:1. Introduction
2. Methodology
2.1. Decline Curve Models
2.2. Goodness of Fit
2.3. Data
3. Results
3.1. Aggregate Decline Curves
3.2. Individual Well Decline Curves
3.2.1. Hyperbolic Decline Curve
3.2.2. Stretched Exponential Decline Curve
3.2.3. Summary of Decline Curves
3.3. Initial Production and Decline Rate
3.3.1. Initial Production
3.3.2. Decline Rates in Different Time Phases
3.4. Estimated Cumulative Production
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
Abbreviations
SE | Stretched Exponential |
Tcf | Trillion cubic feet |
Bcf | Billion cubic feet |
Mcf | Mil cubic feet = Thousand cubic feet |
URR | Ultimate recoverable resource |
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Properties | Hyperbolic | SE |
---|---|---|
URR |
n | |||
---|---|---|---|
Mean | 138.95 | 1.39 | 0.49 |
Std. Deviation | 589.07 | 1.95 | 0.30 |
Min | 0.86 | <0.01 | 0.06 |
25% (Q1) | 1.34 | 0.27 | 0.28 |
50% (Median) | 1.84 | 0.58 | 0.45 |
75% (Q3) | 4.26 | 1.45 | 0.63 |
Max | 4608.88 | 8.46 | 2.78 |
2010 | 2011 | 2012 | 2010–2012 | |
---|---|---|---|---|
First year | 70.58% | 70.40% | 66.76% | 68.54% |
First two years | 83.72% | 83.74% | 80.57% | 82.09% |
10-Year | 15-Year | 20-Year | 30-Year | |||
---|---|---|---|---|---|---|
Hyperbolic | Median | q(t) | 85 | 53 | 38 | 23 |
Q(t) | 1.49 | 1.61 | 1.69 | 1.80 | ||
Mean | q(t) | 68 | 43 | 31 | 19 | |
Q(t) | 1.25 | 1.35 | 1.41 | 1.50 | ||
Aggregate | q(t) | 132 | 90 | 68 | 46 | |
Q(t) | 1.40 | 1.89 | 2.03 | 2.24 | ||
SE | Median | q(t) | 41 | 15 | 7 | 2 |
Q(t) | 1.44 | 1.49 | 1.51 | 1.52 | ||
Aggregate | q(t) | 76 | 36 | 20 | 8 | |
Q(t) | 1.58 | 1.68 | 1.73 | 1.78 |
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Guo, K.; Zhang, B.; Aleklett, K.; Höök, M. Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells. Sustainability 2016, 8, 973. https://doi.org/10.3390/su8100973
Guo K, Zhang B, Aleklett K, Höök M. Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells. Sustainability. 2016; 8(10):973. https://doi.org/10.3390/su8100973
Chicago/Turabian StyleGuo, Keqiang, Baosheng Zhang, Kjell Aleklett, and Mikael Höök. 2016. "Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells" Sustainability 8, no. 10: 973. https://doi.org/10.3390/su8100973