Petroleum Reservoir Evaluation and Development ›› 2023, Vol. 13 ›› Issue (5): 668-675.doi: 10.13809/j.cnki.cn32-1825/te.2023.05.014
• Shale Gas • Previous Articles Next Articles
XUE Gang(),XIONG Wei,ZHANG Peixian
Received:
2023-04-10
Online:
2023-10-26
Published:
2023-11-01
CLC Number:
XUE Gang, XIONG Wei, ZHANG Peixian. Genesis analysis and effective development of normal pressure shale gas reservoir: A case of Wufeng-Longmaxi shale gas reservoir in southeast margin of Sichuan Basin[J].Petroleum Reservoir Evaluation and Development, 2023, 13(5): 668-675.
Table 1
Comparision of typical low pressure to normal pressure shale gas reservoirs at home and abroad[6,9]"
页岩气藏 | 盆地 | 地质年代 | 沉积背景 | 埋深/m | 压力系数 | 低压—常压的主要原因 |
---|---|---|---|---|---|---|
五峰—龙马溪 | 中国四川盆地 | 晚奥陶—早志留世 | 陆棚 | 1 600~3 500 | 0.70~1.20 | 构造挤压、抬升、断裂活动、剥蚀,高压变为低压和常压 |
Marcellus | 美国阿帕拉契亚前陆盆地 | 中泥盆世 | 斜坡 | 1 500~2 800 | 0.70~1.20 | 构造挤压、抬升、断裂活动、剥蚀 |
Antrim | 美国密歇根盆地 | 晚泥盆世 | 克拉通 | 200~800 | 0.70~0.80 | 抬升剥蚀和沉积间断,埋藏史中地层非超压 |
Ohio | 美国阿帕拉契亚前陆盆地 | 晚泥盆世 | 陆棚—斜坡 | 800~2 000 | 0.34~0.90 | 抬升剥蚀和沉积间断,埋藏史中地层非超压 |
New Albany | 美国伊利诺伊盆地 | 晚泥盆世—密西西比期 | 克拉通 | 150~600 | 0.98 | 抬升剥蚀和沉积间断,埋藏史中地层非超压 |
Barnett | 美国福特沃斯前陆盆地 | 早石炭世密西西比期 | 陆棚—斜坡 | 1 900~2 600 | 0.98~1.00 | 剥蚀、沉积间断和断裂,埋藏史中仅释放少量压力 |
Fayetteville | 美国阿尔科马前陆盆地 | 早石炭世密西西比期 | 陆棚 | 300~2 100 | 0.80~1.00 | 构造挤压、抬升、剥蚀、断裂 |
Table 2
Comparison of main development parameters of normal pressure shale gas reservoirs in Marcellus and Wufeng-Longmaxi formation of Wulong"
名称 | 气藏类型 | 压力系数 | 开发方式 | 水平段长/m | 压裂段数/段 |
---|---|---|---|---|---|
Marcellus | 常压页岩气藏 | 0.98~1.18 | 水平井组 | 600~1 800 | 4~8 |
五峰组—龙马溪组 | 常压页岩气藏 | 1.0~1.1 | 探井试采 | 1 317~1 800 | 17~20 |
名称 | 压裂液量/m3 | 支撑剂量/m3 | 排量/(m3 /min) | 测试日产气量/104 m3 | EUR/108 m3 |
Marcellus | 18 000 | 113~340 | 4.77~15.90 | 4.0~25.0 | 0.17~1.10 |
五峰组—龙马溪组 | 34 000~45 401 | 1 192~2 577 | 13.00~18.00 | 4.6~9.2 | 0.56~0.65 |
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