公开(公告)号：US20180136365A1

公开(公告)日：2018-05-17

申请号：US15572444

申请日：2015-05-08

申请人： STATOIL PETROLEUM AS

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

IPC分类号： G01V99/00 ,  G06F17/16

CPC分类号： G01V99/005 ,  G01V3/083 ,  G01V3/165 ,  G01V2003/086 ,  G06F17/16 ,  G06F2217/16

摘要： 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

申请人： Statoil Petroleum AS

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

IPC分类号： G01V1/28 ,  G01V3/08

CPC分类号： G01V1/282 ,  G01V3/083 ,  G01V99/005 ,  G01V2210/66

摘要： 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.