Patent ID: 11966828
Assignee: CGG SERVICES SAS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for estimating permeability values based on well logs, the method comprising:
selecting training data and test data from well logs for which core-analysis-based permeability values are available;
training two regression algorithms using the training data to generate a depth blended model for estimating permeability values, the core-analysis-based permeability values being used for calibrating the depth blended model which outputs first values obtained via a first regression algorithm among the two regression algorithms when the first values are positive, and outputs second permeability values obtained via a second regression algorithm among the two regression algorithms otherwise;
selectively adjusting algorithm parameters of the two regression algorithms depending on an overall consistency check of the first values and the second values obtained for the test data; and
applying the depth blended model to the well logs for which respective core-analysis-based permeability values are not available to estimate model-based permeability values,
wherein the model-based permeability values are used to plan hydrocarbon production.