METHOD FOR SECONDARY EXPLORATION OF OLD OIL AREA IN FAULT SUBSIDENCE BASIN

    公开(公告)号:US20190212460A1

    公开(公告)日:2019-07-11

    申请号:US16242331

    申请日:2019-01-08

    IPC分类号: G01V1/30

    摘要: The present invention discloses a method for overall exploration of a mature exploration area of oil-rich sags, the method including the following steps: building an area-wide seismic sequence framework for a study area based on uniform 3D seismic data of the study area; determining the spatial distribution characteristics of sedimentary reservoirs in the study area by sequence based on the area-wide seismic sequence framework; grading source rocks in the study area by sequence based on the area-wide seismic sequence framework: counting the spatial distribution characteristics of caprocks in the study area; determining a transporting system for the study area based on the unified 3D seismic data of the study area; classifying potential trap areas in the study area based on the spatial distribution characteristics of the sedimentary reservoirs and the spatial distribution characteristics of the caprocks; and deploying the overall exploration of the study area based on the classification of the potential trap areas, grading of the source rocks and the transporting system of the study area.

    Assignment of Systems Tracts
    3.
    发明申请

    公开(公告)号:US20180217283A1

    公开(公告)日:2018-08-02

    申请号:US15747114

    申请日:2016-07-14

    发明人: Jimmy Klinger

    IPC分类号: G01V1/30 G01V99/00

    摘要: A method (1310) for attributing a systems tract to a geological environment, including computing (1314) a shelf break for a geologic environment based at least in part on implicit function values associated with the geologic environment; identifying (1318) sea level variations with respect to geological time for the shelf break; and assigning (1322) at least one systems tract to the geologic environment based at least in part on the sea level variations.

    Method and System for Enhancing Meshes for a Subsurface Model

    公开(公告)号:US20180120478A1

    公开(公告)日:2018-05-03

    申请号:US15724023

    申请日:2017-10-03

    申请人: Matthias Imhof

    发明人: Matthias Imhof

    IPC分类号: G01V99/00

    CPC分类号: G01V99/005 G01V1/302

    摘要: A method and system are described for creating a subsurface model. In this method, a watertight framework may be adjusted to lessen the ill-formed mesh elements. The method collapses mesh elements and/or eliminates nodes enhance the watertight framework and subsequent subsurface model. The resulting subsurface model may be used in reservoir simulations and hydrocarbon operations.

    AUTOMATIC FOCUS IDENTIFICATION METHOD AND SYSTEM FOR KARST CAVE RESERVOIR

    公开(公告)号:US20180067219A1

    公开(公告)日:2018-03-08

    申请号:US15697745

    申请日:2017-09-07

    IPC分类号: G01V1/30 G01V1/28

    摘要: Disclosed are an automatic focus identification method and a system for a Karst cave reservoir. According to the method, velocity replacement is performed based on a pre-stack time migration velocity model to obtain a plurality of replacement migration velocity volumes; pre-stack time migration is performed based on the plurality of replacement migration velocity volumes to obtain a plurality of post-stack seismic data volumes; a three dimensional cube window is selected based on a seismic response characteristic of the Karst cave reservoir; sparse statistical data of a seismic trace or sparse statistical data of a seismic trace attribute of each of the post-stack seismic data volumes in the three dimensional cube window are obtained respectively; and an optimized migration velocity and an optimized seismic trace are obtained through optimization determination.

    Fracture Surface Extraction from Image Volumes Computed from Passive Seismic Traces
    8.
    发明申请
    Fracture Surface Extraction from Image Volumes Computed from Passive Seismic Traces 审中-公开
    从被动地震曲线计算的图像体积的断裂表面提取

    公开(公告)号:US20170023687A1

    公开(公告)日:2017-01-26

    申请号:US15143182

    申请日:2016-04-29

    IPC分类号: G01V1/30 G01V1/28

    摘要: The invention comprises a method of imaging a volume of the earth's subsurface. A selected volume of the earth's subsurface is divided into a three-dimensional grid of voxels. Seismic signals representing seismic energy emanating from the earth's subsurface and detected by sensors deployed in proximity to said selected subsurface volume and conducted to a recorder for recording. The recorded signals are transformed into a grid of discrete voxel signals representing energy emanating from voxels included in said three-dimensional grid of voxels in the earth's subsurface. A smooth analytic function is defined in three dimensional space based on the grid of discrete voxel signals; and fracture surfaces are derived from the smooth analytic function.

    摘要翻译: 本发明包括对地球表面的体积进行成像的方法。 选定体积的地球表面被划分为体素的三维网格。 地震信号表示从地球表面发出的地震能量,并由所述选定的地下体积附近的传感器检测,并传送到记录仪进行记录。 记录的信号被转换成离散体素信号的网格,其表示从包括在地球表面的体素的所述三维网格中的体素发出的能量。 基于离散体素信号的网格,在三维空间中定义了平滑的分析函数; 断裂面由平滑分析函数得出。

    Enhancing seismic features using an optical filter array
    9.
    发明授权
    Enhancing seismic features using an optical filter array 有权
    使用光学滤波器阵列增强地震特征

    公开(公告)号:US09105075B1

    公开(公告)日:2015-08-11

    申请号:US13760903

    申请日:2013-02-06

    申请人: IHS Global Inc.

    摘要: Seismic stratigraphic features may be enhanced using orientation vectors. In one example, a process includes converting a seismic attribute section from a spatial domain to a spatial-frequency domain using a Fourier transform. For each filter in an orientation filter array, the seismic attribute section is convolved with a filter in the spatial-frequency domain. The convolution result is converted back to the spatial domain by inverse Fourier transform. For each point in the seismic section an orientation filter having a response with a maximum energy is found and the orientation is associated with the corresponding energy and the corresponding point.

    摘要翻译: 使用定向向量可以增强地震地层特征。 在一个示例中,过程包括使用傅里叶变换将地震属性部分从空间域转换为空间 - 频域。 对于取向滤波器阵列中的每个滤波器,地震属性部分与空间频域中的滤波器进行卷积。 卷积结果通过逆傅里叶变换转换回空间域。 对于地震部分中的每个点,找到具有最大能量的响应的取向滤波器,并且取向与相应的能量和相应的点相关联。