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1. 发明授权

US09348059B2 Fast modeling using interpolated starting points 有权
标题翻译：使用内插起点进行快速建模
公开(公告)号：US09348059B2
公开(公告)日：2016-05-24
申请号：US13953244
申请日：2013-07-29
申请人： PGS Geophysical AS
发明人： Mattias Enstedt , Joel Skogman , Leif Abrahamsson
IPC分类号： G06G7/48 , G01V99/00 , G01V3/12 , E21B43/20 , G01V7/00
CPC分类号： G01V99/005 , E21B43/20 , G01V3/12 , G01V7/00
摘要： Techniques are disclosed relating to forward and inverse modeling of geophysical formations using interpolation. In one embodiment, a method includes generating a system of equations based on a background model that describes a geophysical formation. In this embodiment, the method also includes generating a first set of solutions for the system of equations using an initial set of base points from geophysical survey data obtained from the geophysical formation and interpolating, using the first set of solutions, to produce a set of solution approximations for a second set of data points from the geophysical survey data. In this embodiment, the method also includes generating a model of the geophysical formation, using the second set of data points and the set of solution approximations, where the model includes a second set of solutions for the system of equations.
摘要翻译：公开了使用插值法进行地球物理地层前向和反向建模的技术。在一个实施例中，一种方法包括基于描述地球物理地层的背景模型生成方程组。在该实施例中，该方法还包括使用来自从地球物理形成获得的地球物理勘测数据的基本点的初始集合来生成用于方程组的第一组解，并使用第一组解来生成一组来自地球物理测量数据的第二组数据点的解近似。在该实施例中，该方法还包括使用第二组数据点和解集合近似集来生成地球物理地层的模型，其中模型包括用于方程组的第二组解。

2. 发明申请

US20180364390A1 Electromagnetic Data Inversion 审中-公开
公开(公告)号：US20180364390A1
公开(公告)日：2018-12-20
申请号：US16009305
申请日：2018-06-15
申请人： PGS Geophysical AS
发明人： Johan Mattsson , Carl Joel Gustav Skogman , Leif Abrahamsson , Jenny-Ann Malmberg , Tryggve Sørensen
IPC分类号： G01V3/38 , G01V3/02 , G01V3/15
摘要： Electromagnetic (EM) inversion includes determining an electric field associated with EM data within a predetermined sensitivity area around each of a plurality of source positions, iteratively inverting the electric field for a subsurface resistivity EM model indicative of a subterranean formation for each of a plurality of EM electrical resistivity data cells within each of the predetermined sensitivity areas, and storing results of the iterative inversion. A linear system of equations comprising a Jacobian matrix is generated based on the iterative inversion, the linear system of equations is stored, and the linear system of equations is solved at each iteration of the iterative inversion to update the subsurface resistivity EM model until a convergence criterion is met. A resistivity map based on the updated subsurface resistivity EM model can be produced.

3. 发明申请

US20140359265A1 FAST MODELING USING INTERPOLATED STARTING POINTS 有权
标题翻译：使用插值启动点进行快速建模
公开(公告)号：US20140359265A1
公开(公告)日：2014-12-04
申请号：US13953244
申请日：2013-07-29
申请人： PGS Geophysical AS
发明人： Mattias Enstedt , Joel Skogman , Leif Abrahamsson
IPC分类号： G01V1/28
CPC分类号： G01V99/005 , E21B43/20 , G01V3/12 , G01V7/00
摘要： Techniques are disclosed relating to forward and inverse modeling of geophysical formations using interpolation. In one embodiment, a method includes generating a system of equations based on a background model that describes a geophysical formation. In this embodiment, the method also includes generating a first set of solutions for the system of equations using an initial set of base points from geophysical survey data obtained from the geophysical formation and interpolating, using the first set of solutions, to produce a set of solution approximations for a second set of data points from the geophysical survey data. In this embodiment, the method also includes generating a model of the geophysical formation, using the second set of data points and the set of solution approximations, where the model includes a second set of solutions for the system of equations.
摘要翻译：公开了使用插值法进行地球物理地层前向和反向建模的技术。在一个实施例中，一种方法包括基于描述地球物理地层的背景模型生成方程组。在该实施例中，该方法还包括使用来自从地球物理形成获得的地球物理勘测数据的基本点的初始集合来生成用于方程组的第一组解，并使用第一组解来生成一组来自地球物理测量数据的第二组数据点的解近似。在该实施例中，该方法还包括使用第二组数据点和解集合近似集来生成地球物理地层的模型，其中模型包括用于方程组的第二组解。

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