井震匹配关键技术在地质导向建模中的应用

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中图分类号：P631 文献标识码：A DOI：10.13810/j.cnki.issn.1000-7210.20250320

Application of key well-seismic matching technology in geosteering modeling

Wan Yongpingl，Yang Xin²，Wang Zhenchuan1，Deng Mingl， She Yinnan1， Sun Xing² （1.Gasfield Company of Shaanxi Yanchang Petroleum（Group） Co.，Ltd.，Yan'an，Shaanxi 7160oo，China; 2.Geophysical Research Institute，BGP Inc.，CNPC，Zhuozhou，Hebei O72751，China）

Abstract： With the continuous advancement of unconventional oil and gas exploration and development in China，geostering modeling technology for horizontal wels has become a critical method to ensure reservoir drilling rates. While seismic data provides essential parameters for predicting lateral stratigraphic variation trends，factors such as complex stratigraphic undulations and discrepancies between welland seismic scales severely limit the accuracyand eficiency of geosteering.Therefore，an integrated key well-seismic matching technology is proposed to enhance the precision and automation of geosteering modeling for horizontal wels.First， by an automated cross-section extraction technique based onthe welltrajectory-seismic gridrelationship，the difficulty in obtaining cross-sections in complex geological conditions is resolved， thereby increasing modeling automation. Second，a trajectory-based cross-section reconstruction technique using neighborhood-weighted interpolation effectively overcomes reconstruction dificulties caused by stratigraphic undulations and scale differences，further improving modeling accuracy.Finally，bed thickness correction technology integrating welltrajectory and seismic structural relationships addresss bed thickness calibration issues，significantly improving the accuracy ofbed thickness estimation. According to practical application within a typical structurally complex block，this technology markedly enhances modeling automation and bed thickness estimation precision，providing effective technical support for geosteering modeling for horizontal wells.

rds： wel-seismic matching，seismic modeling，cross-section extraction， waveform reconstruction，bed thickness correction，geosteering modeling

万永平，杨鑫，王振川，等。（剩余15245字）