Channel Sandbody Prediction Based on Seismic Attributes:A Case Study of J93 Well in Western Slope Area of Northern Songliao Basin

Ke, Qin; Z, Yu; Xufeng, Zhu; Guo, Jiru; Yan, Qun

doi:10.1190/igc2018-215

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“…The density of sandstones in the channel of S1 oil formation on the western slope is less than 2.1g/cm 3 , and the acoustic time difference is greater than 380ȝs/m [28] . The logging response is characterized by low density and low speed, and the seismic response is characterized by weak amplitude reflection.…”

Section: Geophysical Response Characteristics Of S1 and S23 Oil Formamentioning

confidence: 90%

Application of seismic sedimentology to the western slope of northern Songliao basin

Xianwei

2021

E3S Web Conf.

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During the sedimentary period of Saertu reservoir on the western slope of the northern Songliao basin, delta front and shore-shallow lake subfacies are mainly developed, which have the characteristics of few sandstone layers and thin single layer thickness. The lithology of thin layer or thin interlayer can not be distinguished clearly by seismic response on conventional seismic section, and it is difficult to identify them. Geophysical response characteristics of channel sand bodies are defined by well-seismic combination. Under the guidance of seismic sedimentology, the qualitative and quantitative prediction of channel sand bodies is carried out by using 90°-phase conversion, stratal slicing and waveform indication inversion techniques. The results show that the seismic reflection axis is symmetrical with respect to the top and bottom surface of sandstone, and the channel sand body has obvious characteristics and completely corresponds to wave peak reflection. The channel bodies of S1 and S23 reservoir formation are separated respectively into two stages by using the amplitude attributes of stratal slices, and the coincidence rate of reservoir prediction to wells is 78%~84%, with an average of 79.7%. The waveform indicator inversion technique is used to predict the channel sand body thickness of the four stages, and the error of sand body thickness to well is 0~1.6m, with an average of 0.32m.

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Section: Geophysical Response Characteristics Of S1 and S23 Oil Formamentioning

confidence: 90%

Application of seismic sedimentology to the western slope of northern Songliao basin

Xianwei

2021

E3S Web Conf.

View full text Add to dashboard Cite

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Channel Sandbody Prediction Based on Seismic Attributes:A Case Study of J93 Well in Western Slope Area of Northern Songliao Basin

Cited by 1 publication

References 0 publications

Application of seismic sedimentology to the western slope of northern Songliao basin

Application of seismic sedimentology to the western slope of northern Songliao basin

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