Petroleum Reservoir Evaluation and Development ›› 2022, Vol. 12 ›› Issue (4): 545-555.doi: 10.13809/j.cnki.cn32-1825/te.2022.04.001
• Specialist Forum • Next Articles
YAO Hongsheng(),XIAO Cui(
),CHEN Zhenlong,GUO Tao,LI Xin
Received:
2022-02-21
Online:
2022-09-02
Published:
2022-08-26
Contact:
XIAO Cui
E-mail:yaohs.hdsj@sinopec.com;342350238@qq.com
CLC Number:
Hongsheng YAO,Cui XIAO,Zhenlong CHEN, et al. Adjustment countermeasures for efficient development of deep coalbed methane in southern Yanchuan CBM Field[J]. Petroleum Reservoir Evaluation and Development, 2022, 12(4): 545-555.
Table 1
Quantitative evaluation criteria of the favorable areas of No.2 coal seam in southern Yanchuan CBM Field"
有利区 分类 | 沉积作用 | 构造作用 | 地应力 | 水动力 | 物性条件 | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
煤相特征 | 煤层厚度 (m) | 构造条件 | 距离断层距离(m) | 闭合压力(MPa) | 水文条件 | 矿化度 (mg/L) | 渗透率 (10-3 μm2) | |||||
Ⅰ类区 | 中位森林泥炭沼泽 | >4 | 构造简单,局部隆起 | >500 | <20 | 承压区 | >30 000 | >0.3 | ||||
Ⅱ类区 | 低位森林泥炭沼泽 | 3~4 | 构造较简单 | 200~500 | 20~30 | 弱径流 | 10 000~30 000 | 0.1~0.3 | ||||
Ⅲ类区 | 高位森林泥炭沼泽 | <3 | 构造复杂,断层发育 | <200 | >30 | 补给—强径流区 | <10 000 | <0.1 |
Table 2
Comparison of applicable basic geological conditions of commingling production of No.2 and No.10 coal seam in southern Yanchuan CBM Field"
井号 | 煤层号 | 埋深(m) | 储层压力(MPa) | 压力梯度(10-2 MPa/m) | 渗透率(10-3 μm2) | 临界解吸压力(MPa) | 平均日产水量(m3) |
---|---|---|---|---|---|---|---|
Y-1 | 2号 | 898.3 | 3.63 | 0.403 | 0.220 | 2.10 | 2.3 |
10号 | 942.9 | 3.95 | 0.420 | 0.160 | 2.57 | 3.0 | |
Y-2 | 2号 | 1 242.0 | 9.28 | 0.747 | 0.170 | 5.03 | 2.2 |
10号 | 1 287.0 | 9.64 | 0.749 | 0.086 | 5.48 | 2.7 | |
Y-3 | 2号 | 1 114.0 | 8.96 | 0.805 | 0.170 | 6.70 | 1.2 |
10号 | 1 158.0 | 9.48 | 0.820 | 0.120 | 7.41 | 2.2 | |
Y-4 | 2号 | 1 068.0 | 7.45 | 0.702 | 0.90 | 6.83 | 1.4 |
10号 | 1 113.0 | 7.91 | 0.711 | 0.430 | 7.34 | 0.9 | |
平均 | 2号 | 1 080.0 | 7.33 | 0.660 | 0.370 | 5.17 | 1.8 |
10号 | 1 125.0 | 7.75 | 0.680 | 0.200 | 5.70 | 2.2 |
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