在未加载的状态下，发现两组岩样都有明显的波速方位各向异性。
Under the condition of unloading, shear wave splitting phenomenon also can be measured on CM rocks.
针对裂缝性地层的裂缝发育方位问题，建立具有任意方位角的方位各向异性黏弹性本构关系。
This work establishes a new constitutive relation on the azimuthally anisotropic linear viscoelastic media with an arbitrary azimuthal angle for the fractured strata.
提出一种从四分量正交偶极子声波阵列波形数据中提取地层剪切波方位各向异性参数的有效方法。
A new method for estimating formation S-wave anisotropy parameters from 4-component (4-c) data in cross-dipole array acoustic logging is proposed.
理论和实践表明，垂直定向排列的裂缝能够诱导方位各向异性，三维P波地震是一种经济有效的裂缝勘探方法。
Theory and real data show that vertically aligned fractures can induce azimuthal anisotropy. 3D P-wave seismic exploration is an effective and economic method for detecting fractures.
具有水平对称轴的横向各向同性(HTI)介质模型是用来描述含有平行垂直裂缝油气藏最简单方位各向异性介质的模型。
Transverse isotropic model for HTI media with a horizontal symmetry axis is the simplest one used to describe the transverse isotropy of the fractured reservoirs containing parallel vertical cracks.
在前人的研究基础上，化简、推导出了各向异性钻头条件下的横观各向同性地层造斜力和方位力公式。
Basing on former researcher findings, simplified and deduced the formulas of formation deflecting force and azimuth force of transverse isotropy formation under the condition of the anisotropy bit.
方位界面是各向异性介质中的一种特殊现象。
The azimuthal interface is a special phenomenon in anisotropic medium.
忽略各向异性影响的各向同性弹性阻抗公式不能正确地描述各向异性介质中弹性阻抗随入射角和方位角的变化。
The formulae for isotropic elastic impedance neglecting the effects of seismic anisotropy can't describe accurately the variation of elastic impedance with incident Angle and azimuth.
该模型可用于计算油藏不同方向上的传导率，以及各向异性油藏中不同方位上的井距设计。
The model can be used for the conductivity estimation in different directions in reservoir simulation and for the well space design in different orientations in anisotropic reservoirs.
结果表明，水平井的控制储量和产能由水平井方位、各向异性渗透率主值及主方向共同决定。
The controlled reserves and productivity of a horizontal well were determined by the wellbore direction, the principal values of main direction and permeability of the anisotropic reservoir.
影响各向异性的主要因素有岩石的结构构造、矿物的晶格优选方位（LPO）、形态优选方位（SPO）和定向微裂隙。
Seismic velocity anisotropies are mainly caused by lattice preferred orientation( LPO) , shape preferred orientation( SPO) of the major minerals, and oriented microcracks.
影响各向异性的主要因素有岩石的结构构造、矿物的晶格优选方位（LPO）、形态优选方位（SPO）和定向微裂隙。
Seismic velocity anisotropies are mainly caused by lattice preferred orientation( LPO) , shape preferred orientation( SPO) of the major minerals, and oriented microcracks.
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