초록 ▼

A method, apparatus, and article of manufacture are provided that use measurement data to create a model of a subsurface area. The method includes creating an initial parameterized model having an initial estimate of model parameter uncertainties; considering measurement data from the subsurface are

A method, apparatus, and article of manufacture are provided that use measurement data to create a model of a subsurface area. The method includes creating an initial parameterized model having an initial estimate of model parameter uncertainties; considering measurement data from the subsurface area; updating the model and its associated uncertainty estimate; and repeating the considering and updating steps with additional measurement data. A computer-based apparatus and article of manufacture for implementing the method are also disclosed. The method, apparatus, and article of manufacture are particularly useful in assisting oil companies in making hydrocarbon reservoir data acquisition, drilling and field development decisions.

대표청구항 ▼

A method, apparatus, and article of manufacture are provided that use measurement data to create a model of a subsurface area. The method includes creating an initial parameterized model having an initial estimate of model parameter uncertainties; considering measurement data from the subsurface are

A method, apparatus, and article of manufacture are provided that use measurement data to create a model of a subsurface area. The method includes creating an initial parameterized model having an initial estimate of model parameter uncertainties; considering measurement data from the subsurface area; updating the model and its associated uncertainty estimate; and repeating the considering and updating steps with additional measurement data. A computer-based apparatus and article of manufacture for implementing the method are also disclosed. The method, apparatus, and article of manufacture are particularly useful in assisting oil companies in making hydrocarbon reservoir data acquisition, drilling and field development decisions. vehicle operation. 4. The vehicle drive system as defined in claim 3, wherein the controller further functions to: apply the delay process on the speed ratio for calculating the target engine torque by limiting a varying speed of the speed ratio for calculating the target engine torque. 5. The vehicle drive system as defined in claim 3, wherein the controller further functions to: apply the delay process on the speed ratio for calculating the target engine torque only when the speed ratio decreases before and after switching between forward and reverse vehicle operation. 6. A vehicle drive system comprising: an engine; an automatic transmission connected to the engine; means for detecting a running condition of the vehicle; means for detecting an operational condition of the transmission; means for calculating a target drive force based on the running condition of the vehicle; means for calculating a first value based on the state of the transmission; means for setting the first value as a speed ratio for calculating a target engine torque during forward vehicle operation; means for setting a second value calculated by correcting the first value to a larger value as the speed ratio for calculating the target engine torque during reverse vehicle running; means for calculating the target engine torque by dividing the target drive force by the speed ratio for calculating the target engine torque; and means for controlling the engine so that the engine torque coincides with the target engine torque.