石油地球物理勘探2025，Vol.60Issue(3)：679-690,12.DOI:10.13810/j.cnki.issn.1000-7210.20230426
川南地区页岩气地震采集逐点激发井深设计优化及应用效果
Optimization and application effect of pointwise excitation well depth design for shale gas seismic acquisition in southern Sichuan:An example from NJ-RC areas
摘要
Abstract
As shale gas exploration in the southern Sichuan area continues to advance,the exploration environ-ment becomes increasingly complex.To obtain higher quality seismic acquisition data,it is important to im-prove the accuracy of excitation well depth design.However,the current interior design only defines the dy-namic range of excitation well depths,while the actual drilling depth still relies on the driller's identification of the lithology of the bottom well,impacting the accuracy of the excitation depth.Therefore,we propose a method of pointwise excitation well depth design in the NJ-RC areas.Initially,the reasonable range of well depths is analyzed theoretically and the optimal excitation interval in mudstone is determined through compara-tive experiments.The mid-depth of the mudstone is used as the base data to identify the best excitation surface across the entire area.Subsequently,the design process is refined by integrating geostatistics.The principle analysis,effect comparison,and actual data verification of the entire region and local areas for the four interpola-tion methods are conducted,considering both qualitative and quantitative analyses and sedimentary rock con-straints.In this way,the minimum curvature interpolation method is found to be most suitable for the study area.Verification and application of actual data indicate that the optimized pointwise excitation well depth de-sign can determine the optimal excitation surface across the entire area and specify the best excitation depth for each well,effectively enhancing the precision of well depth design.This significantly improves the quality of seismic data and provides a reference for the acquisition of similar work.关键词
深层页岩气/逐点激发井深设计/最小曲率法/地质统计学Key words
deep shale gas/pointwise excitation well depth design/minimum curvature method/geostatistics分类
天文与地球科学引用本文复制引用
隆季原,赵容容,李玉雯,苟恺文,马政嘉,卢轶伦..川南地区页岩气地震采集逐点激发井深设计优化及应用效果[J].石油地球物理勘探,2025,60(3):679-690,12.基金项目
本项研究受中国石油集团东方地球物理公司科研项目"四川盆地下古生界及震旦系提高成像精度的激发和山地井炮混采技术"(902052024)资助. （902052024）
