Patent ID: 11885205
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. The method of claim 10, further comprising:
extracting one or more samples from the formation;
performing a filtration experiment on at least one of the one or more samples by pumping the first drilling mud through the at least one sample to measure the permeability of the filter cake and the thickness of the filter cake;
determining a time-dependent thickness model of the filter cake based on data from the filtration experiment;
determining a time-dependent permeability model of the filter cake based on data from the filtration experiment;
wherein the at least one breakdown pressure model that accounts for the time-dependent permeability of the filter cake and the time-dependent thickness of the filter cake uses the time-dependent thickness model and the time-dependent permeability model to predict the breakdown pressure.