implementation of the model in the paper: https://www.sciencedirect.com/science/article/pii/S0377221721010432?via%3Dihub

Project_Oil-test+plot.ipynb contains the solution of an example case using gurobi.

Project_Oil analisi dimensionale.ipynb Runs multiple instance of various dimensions using gurobi.

time_gurobi.txt contains the results of the dimensional analysis, the column oreder is: number of collection points, number of source points, runtime (manually limited to 3 hours) and percentage gap between lower and upper bounds (inf means that no solutions were found).

Project_Oil VNS.ipynb contains an implementation of a Variable Neighborhood Search for solving the problem. implented the Constructive Heuristic and a VNS, the example solution is the same case as the gurobi test. Dimensional analysis was run on this code increasing manually n_CC and n_SP and increasing the maximum route length constraint to 3600 in the VNS algorithm for n_CC 40 to 80, for n_CC 100 it had to be increased to 5000 (in the CH it's left at 1800).