Challenges and Prospects of Digital Core-Reconstruction Research

Table 3

Common reconstruction methods contrast.

Reconstruction method		Advantage	Disadvantages
Stochastic reconstruction method based on 2D slice statistical constraint features	Gaussian field simulation method	Reconstruction speed is high	Connectivity of reconstructed 3D digital core is poor
	Stochastic search algorithm based on majority operator	Good connectivity	Connectivity decreases with decreasing porosity
	Simulated annealing method	Allow to join as many evaluation function constraints	The accuracy is limited by the evaluation effect of the evaluation function
	Sequence indicator simulation method	The evaluation results for the constraints are similar to the actual core results	Reconstructed 3D digital core connectivity is poor
Stochastic reconstruction method based on 2D slice morphological characteristics statistical constraint	MCMC simulation method	Reconstructed 3D digital cores feature similarities to the original data	Reconstruction results have a certain degree of randomness
	MPS simulation method	Good connectivity, pore morphological characteristics similar to the actual rock	Slow calculation, memory footprint
Physics process-based stochastic reconstruction method	Physics process simulation method	Connectivity is very good	Cannot reconstruct complex rocks with diagenesis