Pore-scale geometric models for interpretation of downhole formation evaluation data
AssigneeBaker Hughes Incorporated
InventorsDaniel T. Georgi, Songhua Chen, David Jacobi
Life of this patent
Estimating the term…
Abstract
Parameters of a pore-scale geometric model of a clastic earth formation are adjusted so that the output of the model matches measurements made one a core sample. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.
Claims31
A method of evaluating an earth formation containing clastics, the method comprising:
- (a) conveying at least one formation evaluation (FE) sensor in a borehole in the earth formation containing clastics and making a measurement of a property of the earth formation;
- (b) defining a pore-scale model of the earth formation whose output matches a value of the measurement, and
- (c) estimating from the pore-scale model a value of an additional property of the earth formation;
- and
- (d) displaying the additional estimated property.
An apparatus for evaluating an earth formation containing clastics, the apparatus comprising:
- (a) at least one formation evaluation (FE) sensor conveyed in a borehole in the earth formation containing clastics, the at least one FE sensor making a measurement of a property of the earth formation;
- and
- (b) at least one processor configured to:
- (A) define a pore-scale model of the earth formation whose output matches a value of the measurement,
- (B) estimate from the pore-scale model an additional property of the earth formation;
- and
- (C) display the additional estimated property.
A computer readable medium for use with an apparatus for evaluating an earth formation containing clastics, the apparatus comprising:
- (a) at least one formation evaluation (FE) sensor configured to be conveyed in a borehole in the earth formation containing the clastics, the at least one FE sensor configured to make a measurement of a property of the earth formation;
- the medium comprising instructions which enable a processor to:
- (b) define a pore-scale model of the earth formation whose output substantially matches a value of the measurement, the model comprising grains of the clastic material,
- (c) estimate from the pore-scale model a value of an additional property of the earth formation;
- and
- (d) display the estimate of the additional property.
Dependencies are inferred from the claim text.