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苏里格气田S区块储层具有低孔、低渗、非均质性强的特点,储层埋深较大,有效砂岩储层薄。且地表为沙漠、半沙漠环境,煤层发育,地震信号屏蔽现象严重,地震资料分辨率低,有效砂岩储层地震响应特征不明显,地震响应隐含于薄互层复合响应中,由此地震资料获取的波阻抗反演结果无法识别有效砂岩储层。为此,针对该问题,提出了解决方案:应用HFE高分辨率处理技术对地震数据进行重新处理,在保真的基础上改善地震数据分辨率,然后在高分辨率地震数据基础上进行AIW波阻抗反演获取波阻抗数据体识别有效砂岩储层。研究结果表明,应用HFE高分辨率技术及AIW波阻抗反演方法后,原始地震数据的品质得到了较大改善,分辨率得到了较大提高,且AIW波阻抗反演结果与井数据吻合较好,为HFE高分辨率处理技术及AIW波阻抗反演方法在其他油气田的应用提供一定的经验和参考价值。
The S block in the Sulige Gasfield is characterized by low porosity, low permeability and strong heterogeneity. The reservoirs are large in depth and thin in the effective sandstone reservoirs. And the surface is in the desert and semi-desert environment. The coal seam is developed, the shielding phenomenon of seismic signal is serious, the seismic data resolution is low, the seismic response characteristics of effective sandstone reservoir are not obvious, and the seismic response is implicit in the composite response of thin interbed. The acquired impedance inversion results do not identify valid sandstone reservoirs. To solve this problem, a solution is proposed: the HFE high-resolution processing technology is used to reprocess the seismic data to improve the seismic data resolution on the basis of fidelity, and then the AIW wave is performed on the basis of the high-resolution seismic data Impedance inversion Obtain wave impedance data to identify effective sandstone reservoirs. The results show that the quality of the original seismic data has been greatly improved and the resolution has been greatly improved with the HFE high-resolution technique and the AIW wave impedance inversion method. The inversion results of AIW wave impedance are in good agreement with the well data Good, provide some experience and reference value for HFE high-resolution processing technology and AIW wave impedance inversion method in other oil and gas fields.