公开(公告)号：US20180136365A1

公开(公告)日：2018-05-17

申请号：US15572444

申请日：2015-05-08

Applicant: STATOIL PETROLEUM AS

Inventor： Emmanuel CAUSSE ,  Anh Kiet NGUYEN ,  Janniche Iren NORDSKAG ,  Frank Agnar MAAØ

IPC: G01V99/00 ,  G06F17/16

CPC classification number: G01V99/005 ,  G01V3/083 ,  G01V3/165 ,  G01V2003/086 ,  G06F17/16 ,  G06F2217/16

Abstract: A method of solving a geophysical inverse problem for estimating a physical parameter, the method comprising providing a model vector representing the physical parameter, transforming the model vector by a first operator to provide a first transformed model vector, solve the inverse problem for the first transformed model vector to provide a first solution, transforming the model vector by a second operator to produce a second transformed model vector, solve the inverse problem for the second transformed model vector to provide a second solution, calculating a weighted sum of the first solution and the second solution.

公开(公告)号：US20180136349A1

公开(公告)日：2018-05-17

申请号：US15572433

申请日：2015-05-08

Applicant: Statoil Petroleum AS

Inventor： Torgeir WIIK ,  Janniche Iren NORDSKAG ,  Anh Kiet NGUYEN ,  Emmanuel CAUSSE

IPC: G01V1/28 ,  G01V3/08

CPC classification number: G01V1/282 ,  G01V3/083 ,  G01V99/005 ,  G01V2210/66

Abstract: A method of estimating a set of physical parameters, the method comprising iteratively inverting an equation to minimise an error between simulated data and measured data and to provide an estimated set of physical parameters, wherein said iteratively inverting comprises at least a first inversion step and a second inversion step and wherein the simulated data depend on a model vector representing the set of physical parameters, applying a compression operator to the model vector representing the set of physical parameters to reduce the number of free variables and to produce a compressed model vector and varying the compression operator between the first inversion step and the second inversion step.

公开(公告)号：US20160334532A1

公开(公告)日：2016-11-17

申请号：US15110352

申请日：2014-01-08

Applicant: STATOIL PETROLEUM AS

Inventor： Torgeir WIIK ,  Eirik Øverland DISCHLER ,  Janniche Iren NORDSKAG ,  Anh Kiet NGUYEN

IPC: G01V3/08

CPC classification number: G01V3/083 ,  G01V2003/086

Abstract: A method of estimating electromagnetic parameters of a geological structure, comprising: providing controlled source electromagnetic, CSEM, data of the structure, calculating a numerical model representing electromagnetic parameters of the structure and generating simulated CSEM data, discretising the numerical model based on prior knowledge of the structure, defining a functional for minimising the distance between said simulated CSEM data and said CSEM data, wherein the functional comprises a regularisation term which depends on prior knowledge of said structure.

Abstract translation: 一种估计地质结构电磁参数的方法，包括：提供受控源电磁，CSEM，结构数据，计算表示该结构电磁参数和产生模拟CSEM数据的数值模型，基于先验知识 该结构定义用于最小化所述模拟CSEM数据与所述CSEM数据之间的距离的功能，其中所述功能包括依赖于所述结构的先验知识的正则化项。