System and method for enhancing petrophysical characterization of porous media
AssigneeBaker Hughes Oilfield Operations LLC
InventorsGuodong Jin, Ryan Antle, Brian Reeves, Jeremy Vandam
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Abstract
A system for analysis of a porous formation is disclosed. Such a system can provide electrical signals for one or more of the porous formation or a representation of the porous formation; can determine, using the electrical signals, permittivity and conductivity measures for the porous formation or the representation of the porous formation; and can model the permittivity and conductivity measures to generate a first estimation model associated with pore features for the porous formation, so that a downhole rock formation can be evaluated for pore connectivity, permeability, and Archie's texture parameters using estimation models.
Claims21
A method for a wellbore operation, the method comprising:
- determining dielectric property values for a plurality of porous samples, the porous samples being a representation or artificially-produced porous samples;
- obtaining structural property values for the plurality of porous samples;
- generating a model, using a processor, for petrophysical property values of the plurality of porous samples by relating the dielectric property values and the structural property values;
- measuring, in a wellbore and using a dielectric sensor, a rock formation dielectric property value of a downhole rock formation in the wellbore;
- determining, using the processor, a rock formation petrophysical property value for the downhole rock formation using the model and the measured rock formation dielectric property value;
- and
- performing the wellbore operation based at least in part on the rock formation petrophysical property value;
- wherein the wellbore operation comprises one or more of changing a well trajectory, controlling a steering device, or sending a downlink.
A system for a wellbore operation, the system comprising:
- a dielectric sensor used in a wellbore and configured to measure a rock formation dielectric property value of a downhole rock formation of the wellbore;
- and
- at least one processor and memory comprising instructions that when executed by the at least one processor cause the system to:
- determine dielectric property values for a plurality of porous samples, the porous samples being a representation or artificially-produced porous samples;
- obtain structural property values for the plurality of porous samples;
- generate a model for petrophysical property values of the plurality of porous samples by relating the dielectric property values and the structural property values;
- and
- determine a rock formation petrophysical property value for the downhole rock formation using the model and the measured rock formation dielectric property value,
- wherein the rock formation petrophysical property value is used at least in part to perform the wellbore operation;
- wherein the wellbore operation comprises one or more of changing a well trajectory, controlling a steering device, or sending a downlink.
Dependencies are inferred from the claim text.