Petroleum Reservoir Evaluation and Development ›› 2021, Vol. 11 ›› Issue (5): 736-743.doi: 10.13809/j.cnki.cn32-1825/te.2021.05.011
• Offshore Oil andGas Exploration and Development • Previous Articles Next Articles
YAN Jianli(),YAN Guanshan,GU Zhimeng,BIE Mengjun,ZHANG Zhenjie
Received:
2021-05-13
Online:
2021-10-26
Published:
2021-10-12
CLC Number:
YAN Jianli,YAN Guanshan,GU Zhimeng,BIE Mengjun,ZHANG Zhenjie. Selection of fracturing wells and layers of Bohai J Oil Field in the late stage of high water cut and its application[J].Petroleum Reservoir Evaluation and Development, 2021, 11(5): 736-743.
Table 1
Dimensionless fluid productivity index evaluation for Bohai J Oil Field"
井号 | 含水率 (%) | 生产压差 (MPa) | 无因次产液指数(注聚后) | 分类 | ||
---|---|---|---|---|---|---|
理论值 | 实际值 | 下降幅度(%) | ||||
W9-6井 | 81 | 7.9 | 2.21 | 0.79 | 64 | 三类井 |
E1-2井 | 86 | 6.4 | 3.02 | 1.28 | 58 | 三类井 |
E2-3井 | 91 | 6.5 | 3.24 | 1.67 | 48 | 三类井 |
E2-7井 | 91 | 5.5 | 4.65 | 2.58 | 45 | 三类井 |
E1-3井 | 90 | 5.6 | 4.02 | 3.53 | 12 | 二类井 |
E1-4井 | 89 | 5.8 | 3.78 | 3.54 | 6 | 一类井 |
E3-4井 | 84 | 5.3 | 2.45 | 2.37 | 3 | 一类井 |
Table 3
Standard for selecting fracturing layer for Bohai J Oil Field"
砂体类型 | 分布形态 | 相邻 砂体类型 | 剩余油 类型 | 油层厚度 (m) | 地层压力 状况 | 驱替 倍数 | 剩余可采储量 (104 t) | 注水受效 方向(个) | 上下隔层 情况 |
---|---|---|---|---|---|---|---|---|---|
分流 河道砂 | 窄条带状 | 河口坝或 非主体薄层砂 | 井网控制程度低 | 压裂段内 有三个及 以上有效 厚度≥1.5 m 的油层 | 推荐地层 压力系数 大于0.75 | <5 | 1.8 | ≥1 | 具备良 好的上 下隔层 |
河口坝 | 分布范围广、 连片发育 | 非主体薄层砂 | 注采不完善型 | 1.2 | ≥2 | ||||
非主体 薄层砂 | 席状 | 非主体薄层砂 | 层间干扰型 | 0.8 | ≥2 |
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