Method for selecting well measurements
AssigneeSchlumberger Technology Corporation
InventorsAndrew John Carnegie, Benoit Couet, Michael Prange, William John Bailey, Ibrahim Pamir Bursin, Stephen Flew
Life of this patent
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Abstract
A method of determining a selection of well measurements and/or their respective control parameters is described based on a global target having predetermined sensitivities to a multitude of uncertainties associated with input variables to a model including the step of ranking measurements and control parameters in accordance with their capability to reduce the uncertainties of input variables identified as most sensitive input variables through simulations using the model or a reduced variant of the model.
Claims11
A method of automatically or semi-automatically selecting well logging or testing measurements and/or their respective control parameters based on an objective function having predetermined sensitivities to a multitude of uncertainties associated with input variables to a model, comprising providing at least one processor to conduct the steps of:
- ranking measurements and/or control parameters in accordance with their capability to reduce the uncertainties of input variables identified as most sensitive input variables through simulations using the model or a reduced variant of the model;
- using the ranked measurements and/or control parameters to automatically or semi-automatically select the ones reducing at most the uncertainties of input variables identified as most sensitive input variables.
A method of performing a logging or testing measurement comprising the step of mobilizing one or more measurement tools capable of performing the logging or testing measurement at a well site after having automatically or semi-automatically selected the logging or testing measurement and/or their respective control parameters based on an objective function having predetermined sensitivities to a multitude of uncertainties associated with input variables to a model, wherein the measurements and/or control parameters are ranked in accordance with their capability to reduce the uncertainties of input variables identified as most sensitive input variables through simulations using the model or a reduced variant of the model and the ranked measurements and/or the control parameters are used to automatically or semi-automatically select the ones reducing at most the uncertainties of input variables identified as most sensitive input variables.
A method of logging or testing an earth formation reservoir comprising the step of:
- automatically or semi-automatically selecting logging or testing measurement based on an objective function having predetermined sensitivities to a multitude of uncertainties associated with input variables to a model, wherein at least one processor conducts the steps of ranking measurements and/or control parameters in accordance with their capability to reduce the uncertainties of input variables identified as most sensitive input variables through simulations using the model or a reduced variant of the model;
- using the ranked measurements and/or control parameters to automatically or semi-automatically select the ones reducing at most the uncertainties of input variables identified as most sensitive input variables;
- and
- mobilizing one or more measurement tools capable of performing the selected logging or testing measurement of the earth formation reservoir.
Dependencies are inferred from the claim text.