Patent ID: 11892592
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 7:
8. A method comprising:
receiving time-varying contributions of multiple uncertain parameters of a model of pressure transient in a discretely fractured reservoir to uncertainty in an output of the model, the time-varying contributions having been determined through a global sensitivity analysis comprising:
(i) calculating global sensitivity indices for the multiple uncertain parameters of the model;
(ii) identifying which of the multiple uncertain parameters contribute most to expected uncertainty in pressure and pressure derivative output of the model; and
(iii) determining how contributions of the multiple uncertain parameters to the expected uncertainty vary over a time period comprising a plurality of time ranges; and
devising a well test to gain additional information about an input parameter of the multiple uncertain parameters based on the received time-varying contributions of the multiple uncertain parameters, wherein devising the well test to gain additional information about the input parameter of the multiple uncertain parameters based on the received time-varying contributions of the multiple uncertain parameters includes:
selecting a testing period corresponding to a time range of the plurality of time ranges to use in performing the well test that is based on relative sensitivity of the input parameter being high relative to sensitivities of any remaining parameters of the multiple uncertain parameters of the model such that that the input parameter provides a greatest contribution to the expected uncertainty in pressure and pressure derivative output of the model during the selected testing period; and
determining one or more flow parameters to implement in the well test based on the relative sensitivity of the parameter;

performing the well test using the selected testing period; and
updating the model based on generated results of the well test performed utilizing the selected testing period and the one or more flow parameters.