公开(公告)号：US5838634A

公开(公告)日：1998-11-17

申请号：US760951

申请日：1996-12-09

申请人： Thomas A. Jones ,  Sterling J. Helwick, Jr.

发明人： Thomas A. Jones ,  Sterling J. Helwick, Jr.

IPC分类号： G01V1/28 ,  G01V1/34 ,  G01V1/30

CPC分类号： G01V1/282 ,  G01V2210/66

摘要： Features of subsurface earth reservoirs of interest are made available for analysis and evaluation by forming three-dimensional, geologic block models based on field data. The field data include geological observations, such as lithofacies and porosity values obtained from well data and other sources, as well as geophysical data, usually from seismic surveys. The geologic models representative of subsurface reservoirs so obtained are optimized to match as closely as feasible geologic constraints known or derived from observed geologic data. The models also conform to geophysically based constraints indicated by seismic survey data. The modeled geologic lithofacies and porosity are converted into acoustic velocity and bulk density values, which are then formulated as a seismic response which is then compared with actual seismic data. A perturbation process on lithofacies and porosity can be iteratively repeated until a representation of the reservoir is obtained which is within specified limits of accuracy or acceptability.

摘要翻译： 通过形成基于现场数据的三维地质块模型，可以对感兴趣的地下储层进行分析和评估。 现场数据包括地质观测资料，例如从井数据和其他来源获得的岩相和孔隙度值，以及通常来自地震勘测的地球物理数据。 如此获得的地下储层的代表性地质模型进行了优化，以便与已知或从观测地质资料得出的可行的地质约束尽可能接近。 这些模型也符合地震勘测数据所指示的地球物理学基础。 模拟地质岩相和孔隙度被转换为声速和体积密度值，然后将其制定为地震响应，然后与实际地震数据进行比较。 可以迭代地重复对岩相和孔隙度的扰动过程，直到获得在准确度或可接受性范围内的储层的表示。