世界物探技术现状及中国物探技术发展的思考

呼图壁地区深层目标合层系白垩系清水河组与侏罗系喀拉扎组、头屯河组（K1q、J3k、J2t）具有规模储层且油气资源丰富，但传统孔隙介质岩石物理建模无法有效区分油气甜点与泥岩。本文在系统分析目标段测井曲线特征基础上，通过微分等效介质岩石物理模型进行横波速度校正，通过Gassman方程流体置换恢复纵横波速度比和纵波阻抗曲线原状地层响应特征，突出甜点储层与泥岩区分度；引入线性滑动理论，建立双孔介质裂缝型储层岩石物理模型。将原生孔隙的微分等效介质岩石物理模型与各向异性次生裂缝的线性滑动模型进行有机融合，实现呼1井-呼6井区孔缝型储层各向异性介质岩石物理建模，构建岩石物理量板。结合叠前OVT域地震数据各向异性反演，有效进行叠前AVAZ裂缝预测。本文形成一套完整的深层甜点预测方法技术流程，为类似探区深层目标勘探开发提供参考。

Status quo of international geophysical exploration technologies and thinking about the development of PetroChina geophysical exploration technologies

The deep target strata K1q, J3k and J2t in the Hutubi area have large-scale reservoirs and abundant oil and gas resources, but the traditional rock physics modeling of porous media cannot effectively distinguish oil and gas desserts from mudstones. Based on the systematic analysis of the logging curve characteristics of the target section, the shear wave velocity is corrected by the differential equivalent medium rock physics model, and the VPVSC and PIMP curves are restored by the Gassman equation fluid replacement, which highlights the sweet spot reservoir and mudstone discrimination. The linear sliding theory is introduced to establish the rock physics model of fractured reservoirs in dual-porosity media. The differential equivalent medium rock physics model for primary pores and the linear sliding model for anisotropic secondary fractures are organically integrated to realize the anisotropic medium rock physics modeling of the pore-fracture reservoir in the Hu 1-Hu 6 well area, and the rock physics plate is constructed. Combined with the anisotropic inversion of pre-stack OVT domain seismic data, the dominant reservoirs are effectively predicted. This paper has formed a complete set of deep fracture prediction method and technical processes, that provide a reference for the exploration and development of deep targets in similar exploration areas.