Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Alexandre Fornel

Mickaele Le Ravalec

Mokhles Mezghani

Jérôme Jaffre

A method for operating an oil deposit based on a technique of positioning wells to be drilled is disclosed. Based on a grid representative of the petrophysical properties of a subterranean formation through at least one well is drilled, a reservoir simulation is performed up to a time for which production of the formation being studied is to be predicted. Then, attributes are selected that are representative of the flows in the formation and a classification of these attributes is performed. Then, a quality indicator is computed for each of the classes and at least one class is selected such that its quality indicator is greater than a first threshold.

Method for operating a substerranean formation from which a fluid is produced

The invention is a method, having applications for the development of reservoirs, for predicting the production of an underground reservoir, comprising generating and updating a parameterized geologic model from production data and seismic data and in particular 4D seismic data which may be used in development of oil reservoirs. According to the method, production data are simulated from the geologic model and a flow simulator, and a petro-elastic depth model is deduced therefrom. A depth/time conversion model is then defined, by means of which the petro-elastic model is converted into time. The model is adjusted by correcting the lag induced by the depth/time conversion and by recalibrating the model. The geologic model is optimized by comparing, through an objective function, the real measurements with the simulation responses (production responses and seismic attributes in time) by updating in particular the depth/time conversion model.

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Rueil Malmaison, France

Alexandre Fornel