横波地震资料在气云区的应用

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中图分类号：P631 文献标识码：A DOI：10.13810/j. cnki. issn. 1000-7210.20240325

Abstract： Agas field in western China is a shalow biogas reservoir.Due to the influence of gas-bearing reser voirs，the quality of P-wave seismic data is poor and cannot provide imaging，thus making the detailed description of the structure and reservoir quite challenging. Therefore，this paper tackles the problems by employing 3D S-wave seismic data to restore the structural morphology of the gas cloud area and characterize high-quality reservoirs.First，an applicability evaluation ofthe seismic data is conducted to determine the applicable range of diferent types of seismic data.Then，S-wave logging and S-wave VSPdata are adopted for joint calibration of wellbore and surface seismic data，and based on this，fine structural interpretation is conducted. Finally，Swave atributes and S-wave inversion are utilized to characterize the reservoir distribution，with development data combined to verify the distribution ofhigh-quality reservoirs. The proposed 3D S-wave seismic interpretation workflow produces a high-precision structural map and accurate reservoir prediction results in the study area，effectively solving the structural and reservoir description problems in the gas cloud area. Finally，strong technical support is provided for the exploration and development planning of the gas cloud area. Keywords： S-wave seismic，gas cloud area，S-wave atribute，reservoir prediction，S-wave inversion

张宏伟，陈志刚，王岩，等，横波地震资料在气云区的应用[J].石油地球物理勘探，2025，60（4）：978-985.

ZHANG Hongwei，CHEN Zhigang，WANG Yan，et al. Application of S-wave seismic data in gas cloud area[J].

OilGeophysical Prospecting，2025，60（4）：978-985.

0 引言

中国西部某气田发育浅层生物气气藏，处于第四系同沉积背斜，构造相对平缓，地层倾角较小，岩性以粉砂岩和泥岩为主，且砂泥互层在该区形成了良好的储盖组合。（剩余9625字）