摘要
利用莺歌海盆地岩心实验室测定数据,探讨了岩石弹性参数随深度及孔隙度的变化规律,总结出一套经验公式.研究了拉梅常数、剪切模量随深度变化的规律.获得了莺歌海盆地砂岩纵、横波速度关系.砂岩含气后拉梅常数降低,剪切模量升高.在水饱和与气饱和两种状态下拉梅常数的相对变化量大于纵波速度的相对变化量,这表明拉梅常数可作为预测含油气性的有效参数.
Using core data measured in laboratory, this paper has discussed variation of rock elasticity parameters with depth and porosity in Yinggehai Basin, and developed an empirical formula for this relationship. Meanwhile, the variations of Lame constant and shear modulus with depth are studied for the first time, and a relationship between P wave and S wave velocity is determined. For gas bearing sandstones, Lame constant will reduce and shear modulus increase. For two conditions of water saturation and gas saturation, a relative change of Lame constant is larger than that of P wave velocity, suggesting that Lame constant is a useful parameter for hydrocarbon prediction.
出处
《中国海上油气（地质）》
2001年第4期264-268,共5页
China Offshore Oil and Gas(Geology)
