Patent ID: 11887019
Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 0:
1. A system for permeability prediction, the system comprising:
a permeability prediction apparatus having a telemetry module;
a logging tool associated with the telemetry module of the permeability prediction apparatus; and
a server associated with the permeability prediction apparatus including
communication circuitry configured to
receive an input from the permeability prediction apparatus,
acquire data associated with a geological formation when operating in a training mode, and
acquire one or more formation properties from a logging tool associated with the permeability prediction apparatus corresponding to the geological formation when a mode of operation is forecasting mode, the one or more formation properties includes a micro-spherically focused log, deep resistivity, a porosity log, a density log, water saturation. neutron porosity log, a caliper log, computed tomography, a density correction log, and gamma ray; and

processing circuitry configured to
determine whether a trained artificial neural network is associated with a unique identifier of the permeability prediction apparatus and a geographical location of the geological formation,
set an operation mode as the training mode in response to determining that the trained artificial neural network is not associated with the unique identifier of the permeability prediction apparatus and the geographical location of the geological formation,
set the operation mode as the forecasting mode in response to determining that the trained artificial neural network is associated with the unique identifier of the permeability prediction apparatus and the geographical location of the geological formation,
calculate, using a trained Hidden Markov model, log-likelihood values to group the data into a plurality of clusters when the mode of operation is training mode,
train an artificial neural network for each of the plurality of clusters using a co-evolutionary genetic algorithm having at least two genetic algorithms when the mode of operation is training mode, wherein a second genetic algorithm is executed inside a first genetic algorithm, the first genetic algorithm generating a number of artificial neural network structures associated with each cluster of the plurality of clusters, each of the artificial neural network structure having initial weights determined by the second genetic algorithm, the first genetic algorithm including identifying 20% of the chromosomes in a random manner,
determine whether the training is successful based on a predetermined accuracy threshold,
store the weights of the artificial neural network structure in a reservoir information database when the training is successful,
determine, using the trained Hidden Markov model, a log-likelihood score associated with the one or more formation properties when the mode of operation is forecasting mode,
identify a cluster associated with the one or more formation properties as a function of the log-likelihood score when the mode of operation is forecasting mode, and
predict a permeability based at least in part on the one or more formation properties and a trained artificial neural network associated with the identified duster when the mode of operation is forecasting mode, and
determine an amount of ail in the geological formation based on the predicted permeability.