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由于须家河组储层致密化导致地震属性参数含气地震响应特征不明显。再加上表层低降速带的影响,地震反射信号高频部分衰减较快,使得整个须家河组储层的地震反射主频较低,有效频带变窄,难以像孔隙型储层那样建立直观的含油气储层识别标志。前期开展了多种含气地震检测技术研究,吸收、数据结构、叠前反演等含气性地震检测技术的应用,预测结果差异性大,效果都不是十分理想。本文重点将采用自主研发的相应软件对普光气田南部须家河组储层进行含气性检测,为高产富集带预测评价提供参考。
Due to the densification of the Xujiahe Formation reservoir, seismic attribute parameters of gas-bearing seismic response are not obvious. Coupled with the influence of low velocity zone on the surface, the high-frequency part of the seismic reflection signal decays rapidly, which makes the seismic reflection frequency of the whole Xujiahe Formation reservoir lower and the effective frequency band narrows so that it is hard to establish like the pore reservoir Intuitive oil and gas reservoir identification. In the early stage, a great deal of gas-bearing seismic detection technologies such as gas exploration, absorption, data structure and prestack inversion were applied. The prediction results are quite different and the results are not very satisfactory. In this paper, we will focus on the gas detection of the Xujiahe Formation reservoir in the southern Puguang gas field by using the software developed by ourselves, which provides a reference for the prediction and evaluation of high-yield enrichment zones.