【摘要】 根据致密砂岩储层岩性控制物性以及物性控制含气性的特点,分析大牛地气田太原组"四性"关系及气层特征;应用无阻流量与声波时差、深侧向电阻率、泥质含量、孔隙度及含气饱和度的交会图法对太原组有效气层进行识别,建立识别气层标准。划分出太原组Ⅰ类、Ⅱ类和Ⅲ类气层,建议优先开发太原组的Ⅰ类区和Ⅱ类区。根据各个产区不同的特点采取不同的开发方式:Ⅰ类区采取直井单层开采方式,Ⅱ类区采取直井多层合采方式,Ⅲ类区采取水平井单层压裂开采方式。更多还原

【Abstract】 The relationships among "4 properties" and the gas reservoir characteristics of the Taiyuan Formation are analyzed according to the fact that the lithology of tight sandstone reservoir controls its physical property,and the physical property controls its gasbearing characteristics. The thickness of the effective gas-bearing layers of the Taiyuan Formation is identified according to the crossplots of open flow rate with interval transit time,deep lateral resistivity,shale content,porosity and gas saturation,and the standard for recognizing gas-bearing layers is established. I,II and III types of gas reservoirs of the Taiyuan Formation are divided. It is suggested to preferentially develop I and II types of gas reservoirs. Reasonable development modes are: I type of reservoir zones should be developed through single layer of vertical well,II type of reservoir zones should be developed through multiple layers of vertical well,and III type of reservoir zones should be developed through single layer fracturing of horizon well.更多还原