The invention belongs to the crossing field of oil and gas
field development and
artificial intelligence optimization methods, and particularly discloses an old
oil field well pattern reconstruction optimization method based on GSO-Niche multi-objective
collaboration, which comprises the following steps: according to dynamic and static parameters of an oil reservoir and an oil-
water well, determining well pattern density and well
pattern type, initializing well position parameters, calculating evaluation indexes, and normalizing the evaluation indexes; on the basis of the evaluation indexes, a dominant set well pattern deployment scheme is obtained, the dominant set is continuously updated, well position parameters obtained after a follow-up process are updated through a firefly optimization
algorithm, and finally the optimal well pattern deployment scheme is determined by means of the niche technology according to the dominant set. According to the method, the firefly group optimization
algorithm and the niche technology are fused, five-dimensional index collaborative optimization is combined, the high-dimensional parameter
space optimization problem and the
blindness of multi-target solution set screening are solved, the optimization efficiency is greatly improved, the
order of magnitude is improved, and the method is particularly suitable for
encryption adjustment and
secondary development of land high-water-content old oil fields.