储层频谱成像技术在塔里木盆地阿北-顺北地区的应用

塔里木盆地阿北顺北地区泥盆系东河砂岩是该区的主要勘探目的层,为一套填平补齐的滨岸相沉积,具有层薄、厚度横向变化大的特点。为准确检测该储层段的厚度、边界及空间分布,通过应用频谱成像技术,对过已钻井地震数据进行频谱成像扫描分析对比,从中寻找储层厚度与调谐频率的关系,沿层进行频谱能量的追踪,并根据频谱成像响应特征进行岩性解释,预测了储层的分布和厚度,取得明显的了效果。

Application of Reservoir Frequency-spectrum Technique in Abei-shunbei Region

Devonian East River sandstone in Abei-shunbei Region of Tarim Basin is the main target zone for exploration in the region, it is a set of flat long shore deposits with the characteristics of thin layer and big changing in lateral thickness. For accurate detecting the reservoir thickness, boundary and space distribution, frequency spectrum technique is used to conduct a spectrum scanning imaging on seismic data of drilled wells, from which the relation between reservoir thickness and tuning frequency is found out and spectrum tracing is conducted along the zones, lithologic interpretation is carried out according to the spectrum imaging response. The technique is used to predict the reservoir distribution and its thickness with obvious effect.