With the intensification of the contradiction between the increase of oil demand and the scarcity of resources, the development of low-permeability oil and gas fields faces severe challenges. In this paper, the lattice Boltzmann method is used to construct a three-dimensional D3Q19-LBGK model, which takes into account the oil consistency and microscale effect, and corrects the acausal relaxation time to realize the high-precision simulation of the pressure distribution of the oil seepage field. The study shows that compared with the homogeneous soil model, the permeability of the simulation model is significantly reduced, which is about 4.1%-16% of that of the homogeneous soil model, and the permeability difference between different models is obvious, with a maximum difference of nearly four times. The pressure distribution shows the characteristic of “pressure funnel”, which is mainly consumed near the bottom of the well, and the pressure of the coupled seepage field is larger than that of the simple seepage field. Based on the seepage field analysis, a “2+3” layer restructuring scheme was proposed, covering 10.42 million tons of geological reserves, and an injection and extraction well network with a distance of 150m-200m was established to maximize the proportion of wells benefiting from the center. The study shows that the lattice Boltzmann method can accurately simulate the pressure distribution of oil seepage field, provide scientific basis for the development of low-permeability oil and gas fields, and effectively guide the adjustment and optimization of oil field development to improve the recovery rate.
