论文部分内容阅读
以东营凹陷永95井为例,根据岩心、测井、地震等资料,从地震相和单井相两方面对永95井冲积扇特征进行了剖析。其中,根据单井相分析将该井冲积扇沉积相分为扇根、扇中、扇端3个亚相,并将扇中亚相细分为辫状水道、辫状水道间和纵坝3个微相。勘探表明,冲积扇沉积易形成有效储层,形成油藏还具有“自我保护”的能力;冲积扇的形成很可能使上覆地层形成扇背斜油藏,或使下伏基岩形成基岩风化壳油藏。
Taking the Yong 95 well in Dongying Sag as an example, the characteristics of alluvial fans in Yong 95 well are analyzed from seismic facies and single well facies based on the data of cores, logging and earthquakes. According to single well facies analysis, the alluvial fan sedimentary facies is divided into three subfacies of fan root, fan and fan, and the fan subfacies are subdivided into braided channel, braided channel and longitudinal dam 3 A micro-phase. Exploration shows that alluvial fan deposits are easy to form effective reservoirs and reservoir formation also has the ability of self-protection. The formation of alluvial fans is likely to form fan-anticlinal reservoirs in overlying strata or form underlying bedrock Bedrock weathering crust reservoir.