Petroleum Reservoir Evaluation and Development ›› 2023, Vol. 13 ›› Issue (5): 695-702.doi: 10.13809/j.cnki.cn32-1825/te.2023.05.017
• Comprehensive Research • Previous Articles
ZHANG Fengxi1(),NIU Congcong2,ZHANG Yichi2
Received:
2022-06-08
Online:
2023-10-26
Published:
2023-11-01
CLC Number:
ZHANG Fengxi, NIU Congcong, ZHANG Yichi. Evaluation of multi-stage fracturing a horizontal well of low permeability reservoirs in East China Sea[J].Petroleum Reservoir Evaluation and Development, 2023, 13(5): 695-702.
Table 1
Summary of fracture model parameters"
参数名称 | 解释结果 | |||
---|---|---|---|---|
第1段 (趾端) | 第2段 | 第3段 | 第4段 | |
裂缝闭合应力/MPa | 57.50 | 58.40 | 62.00 | 59.60 |
平方根曲线净压力估算/MPa | 2.68 | 6.44 | 3.95 | 6.40 |
G-函数曲线净压力估算/MPa | 3.10 | 5.98 | 3.47 | 6.26 |
双对数曲线净压力估算/MPa | 3.00 | 6.73 | 4.21 | 5.33 |
净压力拟合值/MPa | 3.14 | 7.02 | 4.16 | 5.80 |
裂缝半长/m | 75.00 | 103.00 | 72.00 | 118.00 |
裂缝高度/m | 28.00 | 34.60 | 52.00 | 38.90 |
裂缝无因次导流能力 | 0.25 | 0.36 | 0.52 | 0.32 |
Table 3
EUR values measured by various methods"
方法 | 压裂前 | 压裂后 | ||
---|---|---|---|---|
气EUR/ 10? m3 | 油EUR/ 10? m3 | 气EUR/ 10? m3 | 油EUR/ 10? m3 | |
Duong+双曲递减 | 0.176 5 | 0.769 4 | 0.353 9 | 1.224 0 |
YM-SEPD+双曲递减 | 0.166 0 | 0.734 1 | 0.204 6 | 0.926 9 |
修正双曲递减 | 0.165 7 | 0.733 3 | 0.217 1 | 1.004 0 |
归一化产量/累产量 | 0.192 4 | 0.820 7 | 0.262 4 | 1.121 5 |
双曲递减 | 0.194 0 | 0.825 7 | 0.225 8 | 0.939 8 |
Table 4
Probability distribution of EUR"
概率 | 压裂前 | 压裂后 | ||
---|---|---|---|---|
气可采储量EUR/ 10? m3 | 油可采储量EUR/ 10? m3 | 气可采储量EUR/ 10? m3 | 油可采储量EUR/ 10? m3 | |
P?? | 0.128 0 | 0.675 4 | 0.120 9 | 0.714 6 |
P?? | 0.146 8 | 0.719 2 | 0.163 8 | 0.829 6 |
P?? | 0.173 5 | 0.776 9 | 0.237 7 | 0.996 2 |
P?? | 0.205 1 | 0.839 2 | 0.345 0 | 1.196 4 |
P? | 0.235 1 | 0.893 6 | 0.467 5 | 1.389 0 |
P??/P?? | 1.397 1 | 1.166 9 | 2.106 2 | 1.442 1 |
统计平均值 | 0.175 0 | 0.778 3 | 0.248 0 | 1.006 5 |
Swanson(斯万森)平均值 | 0.175 0 | 0.778 3 | 0.247 8 | 1.006 3 |
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