Shell Oil Comapny

Shell Usa, Inc.

Shell Internationale Research Maatschappij, B.v.

Stéphane Youri Richard Michael Joachim Gesbert

Russell David Potter

Donald P Griffith

Sam Ahmad Zamanian

Oriol Falivene Aldea

James Cecil Pickens

Tjipto Santoso

Thomas Peter Merrifield

A method for a method for identifying a subsurface pore-filling fluid and/or lithology. A training set of field-acquired geophysical data and/or simulated geophysical data is provided to train a backpropagation-enabled process. The trained process is used on a field-acquired data set that is not part of the training set to infer presence of a subsurface pore-filling fluid and/or lithology.

Method for identifying subsurface fluids and/or lithologies

The computer system and computer-implemented method allow a user to position an interactive cursor my interaction with a user-input device, to select a point anywhere within a 3D seismic data volume that is visible on a display. In response, the computer dynamically calculates a horizon-based stratal slice that includes the user-selected point. A selected attribute rendering from seismic data that is contained within the horizon-based stratal slice is automatically calculated and dynamically shown on a second display.

Computer system and method for generating attribute renderings from a seismic data volume

A modified direct search Neighborhood Algorithm (NA), similar to genetic or evolutionary algorithms, is used for automatic calibration of Stratigraphic Forward Models (SFM) to data constraints. The modified NA comprises explicit escape clauses from local minima and admissible solutions, thereby preventing a natural tendency of conventional NAs to converge and oversample a single minimum. The density of models in parameter space is used to define local minima. Admissible solutions are defined by considering error thresholds taking into account that SFM may be imperfect and that calibration constraints may be uncertain. The modified NA algorithm obtains a plurality of geological scenarios that agree with the data, and which can be used for further analysis and prediction.

Automated calibration of a stratigraphic forward modelling (SFM) tool using a neighborhood algorithm with explicit escape clauses

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Rijswijk, Netherlands

Stéphane Youri Richard Michael Joachim Gesbert