多井VSP资料在四川GM地区灯影组储层预测中的应用

Application of Multi-Well VSP Data in Reservoir Prediction for the Dengying Formation in the Sichuan GM Area

摘要: 针对四川GM地区灯影组碳酸盐岩储层非均质性强、地面地震资料分辨率较低以及多次波干扰严重等问题，本文系统开展了多井VSP资料在储层预测中的应用研究。通过多井VSP资料的高精度处理和联合分析，建立了灯影组储层地震响应模式，并基于VSP约束开展了岩石物理弹性参数定量评价，从而实现了地面地震资料的精细校正与储层预测优化。研究结果表明，该方法显著提高了地面地震多次波压制效果，准确标定了储层界面，实现了储层属性的高精度识别与预测。该方法创新性地将多井VSP资料深度应用于储层预测流程，明显优化了传统地震资料分辨率与可靠性方面存在的限制条件，为四川GM地区深层碳酸盐岩储层精细描述与有利区优选提供了技术支撑，对提升该地区油气勘探开发效率具有重要意义。

Abstract: Addressing the challenges of pronounced heterogeneity in the Dengying Formation carbonate reservoirs of the GM area in Sichuan, coupled with low resolution of surface seismic data and severe multiple wave interference, this study systematically investigates the application of multi-well VSP data in reservoir prediction. Through high-precision processing and integrated analysis of multi-well VSP data, a seismic response model for the Dengying Formation reservoirs was established. Constrained by VSP data, quantitative evaluation of rock-physical elastic modulus was conducted, enabling refined correction of surface seismic data and optimised reservoir prediction. Results demonstrate that this methodology significantly enhances suppression of surface seismic multiple waves, accurately delineates reservoir boundaries, and achieves high-precision identification and prediction of reservoir properties. This approach innovatively integrates multi-well VSP data into the reservoir prediction workflow, markedly overcoming limitations in resolution and reliability inherent to conventional seismic data. It provides technical support for detailed characterisation of deep carbonate reservoirs and favourable zone selection in the GM area of Sichuan, holding significant implications for enhancing hydrocarbon exploration and development efficiency in this region.