物探与化探2026，Vol.50Issue(1)：34-42,9.DOI:10.11720/wtyht.2026.1295
致密气水平井地震导向技术在金秋气田的应用
Application of seismic steering technology for horizontal wells to the Jinqiu gas field
摘要
Abstract
The Jinqiu gas field in the Sichuan Basin boasts abundant tight gas resources.However,the application of seismic steering technology for horizontal wells faces significant challenges associated with the following geological factors.Specifically,influenced by multistage tectonic movements,the Jurassic Shaximiao Formation exhibits widespread normal faults.Notably,the main target No.6 and No.8 channel sand bodies are characterized by vertical stacking,horizontal overlapping,rapid thickness variations,thin mudstone in-terbeds,and strong reservoir heterogeneity.Therefore,this study established a seismic steering technology system to guide tracking-while-drilling in horizontal wells of tight gas.According to different geological requirements,this study formulated seismic steering tech-niques corresponding to target entry and horizontal drilling based on high-confidence seismic data.First,based on regional velocity,a high-precision time-depth conversion was achieved using the dynamically calibrated velocity of pilot and drilling horizontal wells.This is then supplemented with geostatistical inversion to improve seismic resolution for guiding target entry.Afterwards,building upon region-al results and integrating information from drilled pilot and horizontal wells,a series of techniques were employed to guide horizontal section drilling.These techniques include the dynamic anisotropic prestack depth migration coupled with processing-interpretation inte-gration,dynamic geostatistical inversion,and prestack simultaneous inversion to predict formation attitudes,sand bodies,and gas-bear-ing sweet spots.The practice demonstrates the effectiveness of seismic steering technology in ensuring precise target entry and increas-ing the drilling rate of sand bodies and sweet spots,thus providing a reliable technical foundation for efficient development of tight gas.关键词
致密气/水平井/导向技术/处理解释一体化/叠前地震数据/金秋气田Key words
tight gas/horizontal well/steering technology/integrated of data processing and interpretation/pre-stack seismic data/Jin-qiu gas field分类
天文与地球科学引用本文复制引用
李源,刘微,章雄,张德明..致密气水平井地震导向技术在金秋气田的应用[J].物探与化探,2026,50(1):34-42,9.基金项目
中国石油天然气股份有限公司西南油气田分公司勘探开发研究院项目(12-02-10-2022) （12-02-10-2022）
