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页岩气等非常规资源正逐渐成为重要的勘探开发目标。为认识页岩气储层的地球物理响应,利用受地质和地层评价分析约束的岩石物理关系计算波阻抗和Vp/Vs(纵横波速度比)等有效属性。数值研究表明矿物成分(例如,泥、石英和方解石)和TOC(总有机碳含量)等现场岩石参数以及其之间的相互作用会严重影响富含有机质岩石的地球物理响应,因此,为页岩气储层的地球物理特征提供了依据。
Shale gas and other unconventional resources are gradually becoming an important exploration and development goals. To understand the geophysical response of shale gas reservoirs, effective properties such as wave impedance and Vp / Vs (P-wave velocity ratio) are calculated using petrophysical relationships constrained by geological and stratigraphic evaluation. Numerical studies show that in-situ rock parameters such as mineral composition (eg, mud, quartz and calcite) and TOC (total organic carbon content) and their interactions can severely affect the geophysical responses of organic-rich rocks. Therefore, Geophysical characteristics of gas reservoirs provide the basis.