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综合应用钻井、测井和地震资料,对准噶尔盆地中拐地区克拉玛依上亚组(T2k2)进行高分辨率层序地层学研究,根据微相相序叠加样式与界面特征,共识别出12个短期基准面旋回;在短期基准面旋回识别的基础上,共识别出3个中期基准面旋回和1个长期基准面旋回,并详细分析了各个级次的基准面旋回发育的特征。依据等时地层对比法则对研究区中期基准面旋回进行连井对比,建立等时地层对比格架,在等时地层格架下对砂体进行对比,提高了砂体对比的精度,并通过分析确定层序格架内的砂体发育特征与基准面旋回存在密切联系。
Based on the comprehensive application of well logging, well logging and seismic data, a high-resolution sequence stratigraphy study was conducted on the Karamay Upper Member (T2k2) of the Junggar Basin in Junggar Basin. According to the superposition pattern and interface features of the micro-phase sequence, 12 short- Based on the short-term base-level cycle identification, three mid-term base-level cycles and one long-term base-level cycle are identified, and the characteristics of each level’s cycle development are analyzed in detail. According to the isochronous stratigraphic contrast rule, the mid-term base-level cycles in the study area are compared with each other, the isochronous stratigraphic comparison grids are established, and the sand bodies are compared under the isochronal stratigraphic framework to improve the contrast of the sand bodies. By analyzing It is concluded that there is a close relationship between the sand body development characteristics and the cycle of the base level in the framework of sequence stratigraphy.