Schlumberger Technology Corporation

Westerngeco L.l.p.

Aicha Bounaim

Jarle Haukås

Pierre Le Guern

Oddgeir Gramstad

Oda Roaldsdotter Ravndal

Marie Etchebes

A method can include acquiring imagery of an exposed surface of the Earth; generating a multi-dimensional model based at least in part on the imagery; generating synthetic seismic data utilizing the multi-dimensional model; acquiring seismic data of a subsurface region of the Earth; performing a search that matches a portion of the acquired seismic data and a portion of the synthetic seismic data; and characterizing the subsurface region of the Earth based at least in part on the portion of the synthetic seismic data.

Analogue facilitated seismic data interpretation system

The present disclosure provides an automated interpretation workflow for smooth surface wrapping of an imaged volume. The methods use a volume attribute to classify data into regions corresponding to feature/uncertain/non-feature parts and use smoothing through the uncertain parts to connect the clear boundaries of the feature. Any volume attribute can be used as long as feature/uncertain/non-feature categories can be identified in terms of continuous or discontinuous threshold values or ranges. The workflow can be combined with interpretation of well-defined boundary parts to resolve uncertainty and can be used with both explicit single-z and implicit multi-z (level set) boundary representations.

Smooth surface wrapping of features in an imaged volume

A method of analysing seismic data from a geological volume is provided. The geological volume is divided into a plurality of voxels. For each voxel a respective neighbourhood is defined which includes that voxel and a predetermined arrangement of neighbouring voxels. For each voxel, the respective normal vectors of a seismic attribute vector field derived from the seismic data are calculated. For each voxel, a respective local structure tensor based on the normal vectors of the voxels of the respective neighbourhood is calculated. For each voxel, the value of an expression which includes one or more of the eigenvalues (&#x3bb;, &#x3bb;, &#x3bb;) of the respective local structure tensor is calculated. The method can be used for seismic surveying, or to manage operation of or drilling of a subterranean well.

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Hafrsfjord, Norway

Aicha Bounaim