埕北30太古宇裂缝性潜山油藏孔渗参数模型

为了建立裂缝性潜山油藏的孔渗参数模型，选取核磁共振测井、密度测井和声波测井资料约束Elanplus软件解释井剖面各点的总孔隙度和裂缝系统渗透率，利用井点孔渗物性与声波测井速度资料回归了声波测井速度、声波时差与孔隙度、渗透率的关系式。利用三维地震反演和相干分析得到的三维速度数据体，求取了埕北30太古宇潜山油藏孔渗物性的三维分布。在建立裂缝系统径向、主裂缝方向、次裂缝方向和垂向渗透率之间相关关系模型的基础上，结合应力场数值模拟求得的裂缝走向，预测了裂缝系统渗透率的三维空间各向异性分布，建立了裂缝性潜山油藏的孔渗参数模型。

Parameter model of porosity and permeability of Archaeozoic fractured and buried hill reservoir in the Chengbei30

For establishing a model of porosity and permeability of fractured and buried hill reservoir,gross porosity and permeability in fracture system of each point on the software Elanplus interpretation well profile are restrained by the data of nuclear magnetic resonance log, density logging and acoustic logging. Relational expression of velocity of acoustic log and interval transit time with porosity and permeability is regressed using the data of porosity and permeability of well point and the velocity of acoustic log. 3D distribution of porosity and permeability of Archaeozoic buried hill reservoirs in Chengbei30 is predicted by 3D velocity data volume gained from 3D seismic inversion and coherent analysis. Furthermore, based on establishing the model among vertical permeability and radial and main fractures and sub - fracture directions of the fracture system,3D anisotropic permeability distribution of the fracture system is predicted combined with the fracture trend calculated by stress field numerical simulation. By doing these mentioned above, the author established a 3D distribution model of porosity and permeability of the fractured buried hill reservoir.