System and method for determining a more accurate resistivity model of a geological formation using time-lapse well logging data

(canceled)

(canceled)

A system for estimating a model of a formation, the formation having a wellbore extending therethrough, comprising:

• a database configured to store a first resistivity measurement from a logging-while-drilling (LWD) sensor associated with the formation, the database further configured to later store a second resistivity measurement and a third invaded zone resistivity measurement associated with the formation;
• and
• a computer operably coupled to the database, the computer configured to calculate an invaded zone thickness value for the wellbore based on the first resistivity measurement, the second resistivity measurement the third invaded zone resistivity measurement, and inversion.

(canceled)

A system for estimating a model of a formation, the formation having a wellbore extending therethrough, comprising:

• a database configured to store a -first resistivity measurement associated with the formation from a logging-while-drilling (LWD) sensor, the database is further configured to later store a second resistivity measurement associated with the formation;
• and
• a computer operably coupled to the database, the computer configured to calculate an invaded zone resistivity value and an invaded zone thickness value for the wellbore by utilizing inversion and the second resistivity measurement.