Quantitative risk accessment applied to pore pressure...

Details Quantitative risk accessment applied to pore pressure... Quantitative risk accessment applied to pore pressure...

G - Physics

01

V

G01V 1/28 (2006.01)

Patent

CA 2600395

Pre-drill pore pressure and fracture gradient predictions obtained from seismic velocity data are used in well design taking into account uncertainties in the velocity estimation and in the models that use the velocities to determine pore pressure. Using geological constraints, limits are established on hydrocarbon column height. It is also possible to predict the relative number of casings required to reach target reservoirs.

L'invention concerne des prédictions de gradient de fracture et de pression de pore avant forage obtenues à partir de données de vitesse sismique utilisées dans des conceptions de puits prenant en compte les incertitudes dans l'estimation de vitesse et dans les modèles qui utilisent les vitesses afin de déterminer la pression de pore. En utilisant des contraintes géologiques, des limites sont établies sur la hauteur de colonne d'hydrocarbure. Il est également possible de prédire le nombre relatif de gaines nécessaires afin d'atteindre des réservoirs cibles.

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