0 引言
1 岩性评价
1.1 测井曲线组合图定性识别岩性
1.2 交会图测井参数定量识别岩性
图3 Baye2井八宝山组测井参数交会Fig. 3 Cross plot of logging parameters of Babaoshan Formation in Well Baye2 |
图4 八宝山组孔隙度、渗透率分布直方图Fig. 4 Distribution histogram of porosity and permeability of Babaoshan Formation |
图5 Baye2井常规测井裂缝识别Fig.5 Fracture identification of conventional logging in Well Baye2 |
图6 Baye2井八宝山组孔隙度计算精度验证Fig.6 Porosity calculation accuracy verification of Babaoshan Formation in Well Baye2 |
表1 Baye2井八宝山组不同岩性测井取值范围Table1 Logging range of different lithology of Babaoshan Formation in Well Baye2 |
井号 | 层组 | 岩性 | GR/API | AC/(μs/m) | CNL/% | DEN/(g/cm3) |
---|---|---|---|---|---|---|
Baye2井 | 八宝山组 | 页岩 | 160~300 | 220~320 | 15~24 | 2.4~2.5 |
粗砂岩 | 75~150 | 220~280 | 1~10 | 2.4~2.55 | ||
中砂岩 | 100~200 | 200~325 | 3~15 | 2.37~2.5 | ||
细砂岩 | 125~225 | 200~310 | 4~15 | 2.4~2.55 |
2 物性评价
2.1 裂缝孔隙度储层测井评价
2.2 基质孔隙度测井评价
2.3 渗透率测井评价
3 含气性评价
3.1 有机碳含量测井评价方法
3.2 有机质成熟度测井评价方法
3.3 含气量计算
4 综合评价
4.1 储层测井评价标准
表2 Baye2井储层测井分类与评价标准Table 2 Reservoir logging classification and evaluation criteria for reservoir in Well Baye2 |
储层电性特征 | 气层(I类) | 差气层(II类) | 干层(III类) |
---|---|---|---|
自然伽马GR/API | >220 | 180~220 | <180 |
补偿中子CNL/% | 15~18 | 18~21 | >21 |
有机碳/% | >1.5 | 0.5~1.5 | <0.5 |
孔隙度/% | >1.0 | 0.5~1.0 | <0.5 |
渗透率/(10-3 μm2) | >0.01 | 0.005~0.01 | <0.005 |
总含气量/(m3/t) | >10 | 3~10 | <3 |